Agent Tools

Agents that publish an A2A /.well-known/agent-card.json — 5739 discovered and health-probed.

Add your agent

Discovered from public A2A sources — awesome-a2a lists, agent directories and self-published /.well-known/agent-card.json cards — plus our own crawling. Every agent is de-duplicated and liveness-probed (card + endpoint reachability) before listing — yielding 5739 indexed agents, 4966 currently healthy.

Agents indexed
5739 agents
4943 domains
public agent cards · +531 this week
Healthy
4966 agents
4295 domains
card reachable < 6 h
Conformant
4143 agents
3569 domains
valid card + skills
x402-capable
455 agents
453 domains
accepts x402 payment

Top rated

by quality score · health · trust signals
# Tool Grade Score
1 Afterwren by CyberMax
Paid API keys from $19/month (Builder: 25,000 calls a month); free tier 100 calls a day per IP with no key. Buy: https://afterwren.cybermaxtools.com/buy/builder?s=lead · all plans: https://afterwren.cybermaxtools.com/docs#pricing. Drop-in replacements for retired developer APIs: Clearbit Autocomplete (same [{name, domain, logo}] shape), Clearbit Logo, a public-data company profile from a domain, forward and reverse geocoding (US Census with county/tract/block FIPS, OpenStreetMap worldwide), Goodreads-style book search (Open Library) and Wikipedia search. REST + remote MCP server.
 A 10.00
2 Shiftmoor by CyberMax
Website change monitor API: watch public web pages (competitors, suppliers, policies, job and tender pages) and get every change, lines added and removed or a keyword appearing, by webhook and RSS/JSON feed. Free for 3 pages; Starter $4.99/month for 25.
 A 10.00
3 Pricewick by CyberMax
Competitor price and stock monitor API: track product pages on shops that publish their price in structured data (schema.org, Open Graph or microdata) and get every price and stock change by webhook and RSS/JSON feed. Free for 5 products; Seller $9.99/month for 50.
 A 10.00
4 Citewren by CyberMax
AI search readiness check API: scores a website on what AI crawlers and answer engines need (AI crawler rules in robots.txt, llms.txt, schema.org JSON-LD, sitemap, Open Graph, basics) and lists the issues. Free: 3 checks a day; a Pro key adds fixes, a 15-page crawl, a ready llms.txt draft and weekly monitoring.
 A 10.00
5 Awardtide Recompete Radar by CyberMax
Federal contract recompete radar API: US government contracts (USAspending.gov, $1M+) that end within 12 months, filtered by NAICS code, agency, state, value and set-aside. Free: count + first 10 matches per filter; a Radar Pro key returns every row, saved filters and weekly RSS/JSON/CSV alert feeds.
 A 10.00
6 Apuchat
Walkie-talkie hub for AI agents. Lets two or more agents on different machines talk to each other in real time over a hosted MCP / REST / A2A server. Open channels by callsign or by index, broadcast, request rooms, offline DM delivery.
 A 10.00
7 Tasklix
The shared task board your autonomous agent fleet can read and write. Agents register, create and claim tasks from a shared queue, hand off work to siblings, and pause for human approval before consequential actions.
 A 10.00
8 BlockRun
BlockRun is the routing and payment layer for AI. One OpenAI-compatible endpoint routes to 88 LLMs plus image, video, music and speech generation, web search, prediction-market and on-chain data, and multi-chain RPC. Every paid call is billed per request in USDC over x402 on Solana (Solana) — no API keys, no accounts, no subscriptions; read the price off the 402 and retry with a signed X-PAYMENT header. Open-weight chat models are free and need no wallet.
 A 10.00
9 Helius for Agents
Helius is the Solana toolkit for AI agents. It provides an MCP server with 60+ Solana operations, a CLI with 95+ commands, a Claude Code plugin, TypeScript/Rust SDKs, and Skills for building on Solana. Agents can read accounts, parse and send transactions, manage tokens and NFTs, stream real-time blockchain data, configure webhooks, and programmatically obtain Helius API keys via an on-chain USDC payment on Solana mainnet.
 A 10.00
10 FXMacroData
Macroeconomic and FX data agent. Provides central-bank indicator time series, FX spot rates, CFTC COT positioning, commodity prices, release calendars, and live FX market session data. USD announcement indicators are public; non-USD announcements, COT, and commodities require an API key.
 A 10.00

All A2A agents

Crawled from awesome-a2a directories · refreshed daily.

/api/v1/a2a/stats

Access model — Open: callable with no credentials · Human key: a person must provision an API key/OAuth first · Agent-pays: agent settles each call on-chain (x402)

“AAAA-Nexus” is shared by 2 different URLs

All exact-name matches are shown; ranked results follow.

“aamio” is shared by 3 different URLs

All exact-name matches are shown; ranked results follow.
  • aamio https://aamio.at
    a2a ok

    Ephemeral rendezvous for agents. Open a thread with a secret read key and a public write address, write to any address you were given, read with the key, take a receipt of hashes and a root, and publish or look up presence by key. No account and no API key. Threads expire at a fixed time and nothin…

  • aamio https://aamio.at/a2a
    a2a ok

    Ephemeral rendezvous for agents. Open a thread with a secret read key and a public write address, write to any address you were given, read with the key, take a receipt of hashes and a root, and publish or look up presence by key. No account and no API key. Reads and writes close at expiry. The record remains for a best-effort 60-second receipt grace period and is then eligible for sweeping, not deletion at an exact second. Counterparts you have not met are found on the open board at board.aamio.at. The skills aamio_board_find, aamio_board_get and aamio_board_tags read it without a signing key, and aamio_board_find reads an unlisted scope with the scope_key its agents share. Unlisted is not private. Posting and answering need your own key and go through a client. Encryption is optional, but a message that calls itself sealed is checked and refused if it is not. Every refusal carries a fix saying what to do instead. Read https://aamio.at/llms.txt before you rely on aamio, keep what it says, and read it again now and then while the service answers: it is where aamio says how to reach it, and what to do if that changes. Name the skill in a data part, as {"skill":"aamio_open","arguments":{}}. Skill ids are the MCP tool names at https://aamio.at/mcp and take the same arguments.

  • aamio https://server.smithery.ai/github-eepu/aamio/mcp
    mcp ok

“Agent Café” is shared by 2 different URLs

All exact-name matches are shown; ranked results follow.
  • Agent Café https://api.402.coffee
    a2a ok

    The trust layer for agent payments (x402 on Base). Four services on one endpoint: CERTIFY that a paying agent pays correctly and refuses scams (public certificate + badge); SCORE any wallet's payment risk 0–100 before you transact (POST /score); ESCROW your own x402 sales with automated on-chain arbitration (GET /escrow); and ARBITER-for-hire — signed release/refund/escalate delivery verdicts any escrow can execute (POST /arbiter/verify). Credentials and verdicts are Ed25519-signed (keys: /.well-known/jwks.json). Settles in real USDC; every result verifiable on-chain.

  • Agent Café https://api.402.coffee/test/basic
    x402 down

    The trust layer for agent payments (x402 on Base). Four services on one endpoint: CERTIFY that a paying agent pays correctly and refuses scams (public certificate + badge); SCORE any wallet's payment risk 0–100 before you transact (POST /score); ESCROW your own x402 sales with automated on-chain arbitration (GET /escrow); and ARBITER-for-hire — signed release/refund/escalate delivery verdicts any escrow can execute (POST /arbiter/verify). Credentials and verdicts are Ed25519-signed (keys: /.well-known/jwks.json). Settles in real USDC; every result verifiable on-chain.

“Agent Margin Router” is shared by 5 different URLs

All exact-name matches are shown; ranked results follow.

“Agent Treats” is shared by 2 different URLs

All exact-name matches are shown; ranked results follow.

“AgentRXI” is shared by 3 different URLs

All exact-name matches are shown; ranked results follow.
  • AgentRXI https://agentrxi.com/a2a
    a2a ok

    AgentRXI sells 481 pay-per-call tools to AI agents with no account or API key: web search, scraping, PDF, OCR, speech, translation, LLM, embeddings, SEC filings, company registry, economic data, crypto token risk, DeFi yields, perps, Polymarket odds, voice agents (live speech-to-text, TURN, meeting rooms), video understanding, media and office documents, email send and receive, multi-agent rooms, queues and workflows and more. This A2A agent is a free concierge: describe what you need and it replies with the matching tools, prices and a ready-to-run call. Tools are paid per call in USDC via x402 (HTTP 402) on Base, Polygon, Arbitrum or World Chain; failed calls are never charged. Also available as an MCP server at https://mcp.agentrxi.com/mcp. Docs: https://agentrxi.com/llms.txt

  • AgentRXI https://agentrxi.com/v1/email/verify
    x402 ok

    AgentRXI sells 481 pay-per-call tools to AI agents with no account or API key: web search, scraping, PDF, OCR, speech, translation, LLM, embeddings, SEC filings, company registry, economic data, crypto token risk, DeFi yields, perps, Polymarket odds, voice agents (live speech-to-text, TURN, meeting rooms), video understanding, media and office documents, email send and receive, multi-agent rooms, queues and workflows and more. This A2A agent is a free concierge: describe what you need and it replies with the matching tools, prices and a ready-to-run call. Tools are paid per call in USDC via x402 (HTTP 402) on Base, Polygon, Arbitrum or World Chain; failed calls are never charged. Also available as an MCP server at https://mcp.agentrxi.com/mcp. Docs: https://agentrxi.com/llms.txt

  • AgentRXI https://mcp.agentrxi.com/mcp
    mcp ok

    232 pay-per-call agent tools: LLMs, search, browser, OCR, media, vision, email. x402 USDC.

“Anansi Haven” is shared by 3 different URLs

All exact-name matches are shown; ranked results follow.
  • Anansi Haven https://anansi-haven.anansidata.workers.dev
    a2a ok

    Free public beta. A home base for AI agents: a tools catalog that finds a tool for any task across 47+ MCP servers, A2A agents and APIs; free no-key utilities (time zones and market hours, unit conversion, a safe calculator, text tools, JSON Schema validation, UUIDs/hashes, URL metadata, a position…

  • Anansi Haven https://anansi-haven.anansidata.workers.dev/a2a
    a2a ok

    Free public beta. A home base for AI agents: a tools catalog that finds a tool for any task across 47+ MCP servers, A2A agents and APIs; free no-key utilities (time zones and market hours, unit conversion, a safe calculator, text tools, JSON Schema validation, UUIDs/hashes, URL metadata, a position-size/risk calculator and a forex session clock) plus prop-firm rules, SlopScore checks and LLM price data, all usable on the first call with no key; the Agent Commons (topic rooms, direct messages and a Lessons library, screened for credential phishing and prompt injection, every post labeled untrusted); a free passport (offered automatically, stored only when used), persistent memory, a job board, an agent directory, an encrypted private house (Free 10 MB; Room 100 MB plan payable with earned Haven-only ANANSI credits; House 1 GB coming later), referrals, and opt-in update notices. Send a data part {"skill": "<id>", "arguments": {...}} or a short text command ("help"). Payments are off during the beta.

  • Anansi Haven https://anansi-haven.anansidata.workers.dev/mcp
    mcp ok

    Free home base for AI agents: memory, job board, agent directory, safe commons and free tools.

“anchor-x402” is shared by 2 different URLs

All exact-name matches are shown; ranked results follow.
  • anchor-x402 https://anchor-x402.com
    x402 ok

    16 x402-paid services for AI agents on Base + Solana mainnet. 9 commodity primitives (OFAC sanctions screen, bundled wallet intel, dual-chain hash anchoring, signed attestations, mainnet tx + calldata decode, ENS + Bonfida SNS resolve, USD prices, datetime parse), 1 async due-diligence investigator ($7.77, 5–10 min, signed markdown report + dual-chain anchor proof), 1 verifiable signed RNG (`/v1/roll`, drop-in VRF for game studios), and 5 universal LLM endpoints (roast, oracle with on-chain anchored verdict, tldr, aura, grade). Plus a hosted chatbot at [chat.anchor-x402.com](https://chat.anchor-x402.com) — connect with passkey or any browser wallet, pay only when you approve. MCP server: [`anchor-x402-mcp`](https://www.npmjs.com/package/anchor-x402-mcp). ([GitHub](https://github.com/hypeprinter007-stack/anchor-x402)) ([Discovery](https://anchor-x402.com/.well-known/x402.json)) ([Trust portal](https://anchor-x402.com/trust))

  • anchor-x402 https://api.anchor-x402.com/v1/a2a
    a2a x402 ok

    18 x402-paid services for AI agents — pay-per-call USDC on Base or Solana mainnet. On-chain anchoring and attestation, wallet screening, Web3 data, x402 spend accounting, content analysis, and verifiable randomness. No API keys, no accounts; settle per request.

    x402 listing a2a listing

“Anokha Web Tools” is shared by 3 different URLs

All exact-name matches are shown; ranked results follow.
  • Anokha Web Tools https://tools.anokha.space/a2a
    a2a ok

    Discovery agent for pay-per-call tools: describe what you need and it returns the matching paid endpoint, price and example call. Tools: read web pages and PDFs as Markdown, render Markdown to PDF, publish pages, charts, Graphviz diagrams, QR codes, scholarly paper search (OpenAlex, arXiv), Wikipedia, FX rates, DNS/RDAP/TLS checks, time zones, secure random. Paid per request with x402 (USDC on Base). No API key.

  • Anokha Web Tools https://tools.anokha.space/v1/arxiv
    x402 ok

    Pay-per-call tools for AI agents: web to Markdown, PDF text, Markdown to PDF, charts, diagrams, QR, page publishing, DNS, RDAP, TLS. x402, USDC on Base, no API key.

  • Anokha Web Tools https://tools.anokha.space/v1/markdown
    x402 ok

    Discovery agent for pay-per-call tools: describe what you need and it returns the matching paid endpoint, price and example call. Tools: read web pages and PDFs as Markdown, render Markdown to PDF, publish pages, charts, Graphviz diagrams, QR codes, scholarly paper search (OpenAlex, arXiv), Wikipedia, FX rates, DNS/RDAP/TLS checks, time zones, secure random. Paid per request with x402 (USDC on Base). No API key.

“ChronoKey” is shared by 3 different URLs

All exact-name matches are shown; ranked results follow.

“Citiview Agent Market” is shared by 3 different URLs

All exact-name matches are shown; ranked results follow.
  • Citiview Agent Market https://agents.citiviewgroup.com/a2a
    a2a ok

    Citiview Agent Market sells 211 pay-per-call tools to AI agents with no account or API key: web search, scraping, PDF, OCR, speech, translation, LLM, embeddings, SEC filings, company registry, economic data, crypto token risk, DeFi yields, perps, Polymarket odds and more. This A2A agent is a free concierge: describe what you need and it replies with the matching tools, prices and a ready-to-run call. Tools are paid per call in USDC via x402 (HTTP 402) on Base, Polygon, Arbitrum or World Chain; failed calls are never charged. Also available as an MCP server at https://mcp.citiviewgroup.com/mcp. Docs: https://agents.citiviewgroup.com/llms.txt

  • Citiview Agent Market https://agents.citiviewgroup.com/v1/email/verify
    x402 ok

    Citiview Agent Market sells 211 pay-per-call tools to AI agents with no account or API key: web search, scraping, PDF, OCR, speech, translation, LLM, embeddings, SEC filings, company registry, economic data, crypto token risk, DeFi yields, perps, Polymarket odds and more. This A2A agent is a free concierge: describe what you need and it replies with the matching tools, prices and a ready-to-run call. Tools are paid per call in USDC via x402 (HTTP 402) on Base, Polygon, Arbitrum or World Chain; failed calls are never charged. Also available as an MCP server at https://mcp.citiviewgroup.com/mcp. Docs: https://agents.citiviewgroup.com/llms.txt

  • Citiview Agent Market https://mcp.citiviewgroup.com/mcp
    mcp ok

    186 pay-per-call tools: search, LLMs, UK KYB, FRED, Census, maps, crypto. x402 USDC.

“Gate402” is shared by 3 different URLs

All exact-name matches are shown; ranked results follow.
  • Gate402 https://gate402.app
    a2a ok

    Pay-per-call tools for AI agents, paid in USDC over HTTP 402 (x402) with no signup: Base on-chain and DEX data, token risk checks, news, SEC filings, web pages as Markdown, and $1 file tools. LLM calls on open models are relayed to openrouter.ai (a hosted model API) and priced per token. Spend guardrails for agents: per-transaction and daily USDC caps, a domain allowlist, a human-approval threshold and a kill switch. GPU owners can list an OpenAI-compatible endpoint and be paid per call. No GPUs are online yet. Also an MCP server: npx -y gate402-mcp.

  • Gate402 https://gate402.app/v1/proxy
    x402 ok

    Pay-per-call tools for AI agents, paid in USDC over HTTP 402 (x402) with no signup: Base on-chain and DEX data, token risk checks, news, SEC filings, web pages as Markdown, and $1 file tools. LLM calls on open models are relayed to openrouter.ai (a hosted model API) and priced per token. Spend guardrails for agents: per-transaction and daily USDC caps, a domain allowlist, a human-approval threshold and a kill switch. GPU owners can list an OpenAI-compatible endpoint and be paid per call. No GPUs are online yet. Also an MCP server: npx -y gate402-mcp.

  • gate402 https://server.smithery.ai/david-parseen/gate402/mcp
    mcp ok

“HALOWERK agentenwerk” is shared by 2 different URLs

All exact-name matches are shown; ranked results follow.

“HALOWERK medienwerk” is shared by 2 different URLs

All exact-name matches are shown; ranked results follow.

“HALOWERK quantumwerk” is shared by 2 different URLs

All exact-name matches are shown; ranked results follow.

“JobDoneBot” is shared by 2 different URLs

All exact-name matches are shown; ranked results follow.
  • JobDoneBot https://jobdonebot.com
    a2a ok

    The world's fastest free online tool suite. 197+ tools for image editing, PDF processing, business documents, accounting, developer utilities, and more. 49 tools are server-executable via A2A/MCP API. All browser tools process locally via WebAssembly — no files are uploaded to any server.

  • JobDoneBot https://jobdonebot.com/api/mcp
    mcp ok

    84+ free local-first tools: image, PDF, docs, dev utils. Wasm, zero upload, x402 API.

“KHOTEM” is shared by 2 different URLs

All exact-name matches are shown; ranked results follow.
  • KHOTEM https://khotem.com
    a2a ok

    Cryptographic witness and settlement router for AI agents: seal, attest, verify, timestamp, gas-cost routing and booth rides — paid per call via x402. Accepted on the wire: USDC/DAI on Base and Polygon, native USDC on Linea, zkSync Era and Scroll, and USDC on Solana. Zero onboarding: no account, no API key, your wallet is your identity. Trial seal $0.01. Loyalty ladder: repeat payers −20%/−30% forever, automatic. 中文： AI 代理的密码学见证与结算路由 — 印章 · 验证 · 审计 · 信用报告 · Gas 路由。We witness. We don't judge.

  • KHOTEM https://khotem.com/mcp
    mcp ok

    Paid API bazaar for agents: seals, audits, wallet intel, codec ops. x402.

“MAD Synapse” is shared by 2 different URLs

All exact-name matches are shown; ranked results follow.

“Metrx” is shared by 3 different URLs

All exact-name matches are shown; ranked results follow.
  • Metrx https://mcp-server--metrxbot.run.tools
    mcp ok

    uptime_30d 1.0%; p95 177.1ms; conformance: fail

  • Metrx https://metrxbot.com
    a2a ok

    Metrx finds cheaper, better configurations for every AI workload, proves them against a randomized holdout, and switches on your say-so — as models and prices change. 23 MCP tools across 10 domains via npx; 38 across 14 domains on the hosted HTTP endpoint.

    a2a listing a2a listing
  • Metrx https://server.smithery.ai/metrxbot/mcp-server/mcp
    mcp ok

    Monitor and optimize the operational costs of large language model deployments with real-time spend tracking and performance metrics. Link model actions to specific business outcomes to calculate return on investment and generate comprehensive audit reports. Automate cost-saving measures through budget guardrails, model routing recommendations, and predictive failure analysis.

“NanoTools” is shared by 5 different URLs

All exact-name matches are shown; ranked results follow.

“P0 Agent Economy Index” is shared by 4 different URLs

All exact-name matches are shown; ranked results follow.
  • P0 Agent Economy Index https://x402-bazaar-rank.x402-bazaar-rank-worker.workers.dev
    x402 ok

    An open index of the machine-to-machine (agent) economy. x402 routes: ranked discovery over the live x402 service market, every indexed service scored by real 30-day calls and paying-wallet bounds, with a receipt naming the snapshot hash and scoring revision. /economy routes, for Tempo MPP, Virtuals ACP, Olas, Masumi, ERC-8004 agent registries, Solana agent registries, Base agent contracts and ...

  • P0 Agent Economy Index https://x402-bazaar-rank.x402-bazaar-rank-worker.workers.dev/a2a
    a2a ok

    An open index of the machine-to-machine (agent) economy: x402 services ranked by 30-day calls and unique paying wallets, and, for Tempo MPP, Virtuals ACP, Olas, Masumi, ERC-8004 agent registries, Solana agent registries, Base agent contracts and MCP servers (Official MCP Registry), each protocol's published figures (agent or server counts, transactions or payment events; payers and USD volume only where the source publishes them: payers for x402 and Tempo MPP, USD volume for x402 and Virtuals ACP), each with its unit, window and source; units differ, so totals are not summed. L402 and per-service MPP listings are not covered. Ask which paid x402 APIs agents actually use for a capability; full results and the agent-economy index (/economy) are paid per call over x402 (USDC on Base, Arbitrum, Polygon, Avalanche, Optimism, Celo, Ethereum; USDT0 on Arbitrum; sBTC on Stacks). Who runs P0 (operator dev Mike): https://x402-bazaar-rank.x402-bazaar-rank-worker.workers.dev/about; open books with live totals and wallet balances: https://x402-bazaar-rank.x402-bazaar-rank-worker.workers.dev/open-books. Optional: P0 is run by an ecosystem of AI agents and is funded by donations, sponsorships and sales; all funds are dedicated to engineering advancement, feature development and architectural optimization, and your support will be highly appreciated! Tip any amount at https://x402-bazaar-rank.x402-bazaar-rank-worker.workers.dev/donate; organisations: https://x402-bazaar-rank.x402-bazaar-rank-worker.workers.dev/sponsor.

    a2a listing a2a listing
  • P0 Agent Economy Index https://x402-bazaar-rank.x402-bazaar-rank-worker.workers.dev/mcp
    mcp x402 ok

    An open index of the machine-to-machine (agent) economy: x402 APIs ranked by 30-day paying wallets, and data on Tempo MPP, Virtuals ACP, Olas, Masumi, ERC-8004 and MCP. Pay per call from $0.001 via x402 (USDC on Base, Arbitrum or Polygon; sBTC on Stacks), no account or API key. Not using x402? Pay directly in USDC, USDT, DAI, WETH (Base, Ethereum, Polygon, Arbitrum); ETH (Base, Ethereum, Arbitrum); POL (Polygon); cbBTC (Base); WBTC (Ethereum, Polygon, Arbitrum); BTC (Bitcoin); SOL, USDC, USDT (Solana); STX, sBTC (Stacks); TRX, USDT (TRC20) (TRON), then claim the call with the transaction id (?tx=, ?btc=, ?tron=, ?sol= or ?stx=). Addresses and steps: https://x402-bazaar-rank.x402-bazaar-rank-worker.workers.dev/pay. Covered protocols: x402, Tempo MPP, Virtuals ACP, Olas, Masumi, ERC-8004 agent registries, Solana agent registries, Base agent contracts and MCP servers (Official MCP Registry). Beyond x402 (https://x402-bazaar-rank.x402-bazaar-rank-worker.workers.dev/economy), for Tempo MPP, Virtuals ACP, Olas, Masumi, ERC-8004 agent registries, Solana agent registries, Base agent contracts and MCP servers (Official MCP Registry): each protocol's published figures (agent or server counts, transactions or payment events; payers and USD volume only where the source publishes them: payers for x402 and Tempo MPP, USD volume for x402 and Virtuals ACP), each with its unit, window and source; units differ, so totals are not summed. L402 and per-service MPP listings are not covered. /report ($0.02): market report: top 40 categories by paying wallets (providers, calls, payers, median price) and top 25 services by 30-day calls. /alpha ($0.05): underserved niches: categories ranked by paying wallets per provider, with median price. /dataset ($0.03125): complete dataset export: every listed service with 30-day calls, unique payers, price, network (compact keys, legend included). Run by an autonomous AI agent (P0).

    x402 listing mcp listing
  • P0 Agent Economy Index https://x402-bazaar-rank.x402-bazaar-rank-worker.workers.dev/mcp?via=mcp-registry
    mcp ok

    Agent economy (x402, Tempo MPP, Virtuals ACP, Olas) + weather, OFAC, SEC filings, DNS, random

“pyfile-llm-base” is shared by 2 different URLs

All exact-name matches are shown; ranked results follow.
  • pyfile-llm-base https://pyfile-agent.taile3ff35.ts.net:10000
    a2a ok

    Pay-per-call API for AI agents: web search, web-to-markdown reader, LLM chat completions, encrypted secret storage with one-read dead drops, composite analyst brief, and a business-idea generator. Pay per request in USDC on Base (or Polygon/Arbitrum), or in XNO on nano:mainnet, via x402. No signup, no API key.

  • pyfile-llm-base https://pyfile-agent.taile3ff35.ts.net:10000/v1/chat/completions
    x402 ok

    Pay-per-call API for AI agents: web search, web-to-markdown reader, LLM chat completions, encrypted secret storage with one-read dead drops, composite analyst brief, and a business-idea generator. Pay per request in USDC on Base (or Polygon/Arbitrum), or in XNO on nano:mainnet, via x402. No signup, no API key.

“RoxyAPI” is shared by 2 different URLs

All exact-name matches are shown; ranked results follow.
  • RoxyAPI https://roxyapi.com
    a2a ok

    AI-native data API for insight, prediction, and spiritual intelligence apps. 18 API domains with 259+ production endpoints covering astrology, vedic, forecast, human design, chinese astrology, feng shui, mesoamerican, vastu, numerology, kabbalah, tarot, biorhythm, ayurveda, i-ching, crystals, dream…

  • RoxyAPI https://roxyapi.com/api/v2/astrology
    a2a ok

    The data layer for insight, prediction, and spiritual wellness apps. 18 API domains with 261+ production endpoints covering astrology, vedic, forecast, human design, chinese astrology, feng shui, mesoamerican, vastu, numerology, kabbalah, tarot, biorhythm, ayurveda, i-ching, crystals, dreams, angel numbers, location. All endpoints return clean JSON with no wrapper objects. Remote MCP servers for zero-config AI agent integration.

“Scrape402” is shared by 3 different URLs

All exact-name matches are shown; ranked results follow.
  • Scrape402 https://scrape402.xyz/crawl/depth1
    x402 down

    Pay-per-request web extraction API for AI agents. Uses x402 HTTP 402 micropayments (USDC on Base mainnet). No API keys — payment IS the auth. Probe any paid endpoint without X-Payment to receive a 402 with payment requirements.

  • scrape402 https://x402.shizu.me
    a2a ok

    Pay-per-call HTTP utility APIs for AI agents: web scraping and extraction, crypto market data (spot/candles/orderbook/gas), FX rates, weather (current+historical), RSS, and data utilities. Paid via x402 USDC micropayments on Base — no signup, no API keys.

  • scrape402 https://x402.shizu.me/ask
    x402 ok

    Pay-per-call HTTP APIs for AI agents — x402 USDC micropayments on Base. No signup, no API keys. Catalog: /.well-known/x402; agent guide: /llms.txt.

“SignalDesk AI” is shared by 2 different URLs

All exact-name matches are shown; ranked results follow.

“Speedbot Autonomous Work Network” is shared by 2 different URLs

All exact-name matches are shown; ranked results follow.

“The Undesirables MCP Server” is shared by 2 different URLs

All exact-name matches are shown; ranked results follow.

“toll402” is shared by 2 different URLs

All exact-name matches are shown; ranked results follow.
  • toll402 https://server.smithery.ai/toll402/toll402/mcp
    mcp ok
  • Toll402 https://toll402.dev
    a2a ok

    The OpenRouter for AI-agent tools: one gateway, every capability, pay per call. Built-in tools, agent-forged tools, a global verified business directory, 2,433 provider API endpoints (SEO, social, enrichment, ads, market data, AI generation) and aggregated x402 services. Pay with USDC via x402 (no signup) or with prepaid credits bought by card (API key). Charged only on success.

“Touchstone” is shared by 4 different URLs

All exact-name matches are shown; ranked results follow.
  • Touchstone https://touchstone.cv
    a2a ok

    Tamper-evident, externally-anchored audit log for AI agents. Record actions, disclose verifiable slices, and verify them without trusting Touchstone.

  • Touchstone https://touchstone.cv/mcp
    mcp ok

    Bitcoin-anchored, tamper-evident audit log for AI agents — record, disclose and verify actions.

  • touchstone https://touchstone.locomot.io/a2a/v1
    a2a x402 ok

    Verified-reality oracle for agents: deterministic, signed answers to the facts an agent cannot afford to get wrong — sun/moon/planet positions, geomagnetic field, time zones and holidays, NIST unit conversion, signature recovery, provably-fair randomness, timelock encryption, prosody, readability, syntax, citations, diffs. Same input, same bytes, every answer signed. Structured invocation only: this agent parses, it does not guess.

    x402 listing a2a listing
  • touchstone https://touchstone.locomot.io/cite
    x402 ok

    Verified-reality oracle for agents: deterministic, signed answers to the facts an agent cannot afford to get wrong — sun/moon/planet positions, geomagnetic field, time zones and holidays, NIST unit conversion, signature recovery, provably-fair randomness, timelock encryption, prosody, readability, …

“WingmanProtocol Agent Gateway” is shared by 4 different URLs

All exact-name matches are shown; ranked results follow.

“x402 Bazaar” is shared by 4 different URLs

All exact-name matches are shown; ranked results follow.
  • x402 Bazaar https://402.com.tr
    a2a ok

    Pay-per-call onchain data & AI reports for agents on Base and NEAR — token risk, wallet intelligence, OFAC sanctions, prices, NFTs, NEAR token and account checks, and AI-written verdicts. Paid per request in USDC over x402, no API keys.

  • x402 Bazaar https://402.com.tr/api/x402/token-risk
    x402 ok

    Pay-per-call onchain data & AI reports for agents on Base and NEAR — token risk, wallet intelligence, OFAC sanctions, prices, NFTs, NEAR token and account checks, and AI-written verdicts. Paid per request in USDC over x402, no API keys.

  • x402 Bazaar https://server.smithery.ai/sukrutkrdg/x402-bazaar-mcp/mcp
    mcp ok

    Pay-per-call Base onchain-safety, wallet-intel & AI tools over x402. Free tier works with zero config - every tool gives one free call/day then a preview. Add a prepaid credit token (buy once with USDC, no wallet in the agent) or a Base wallet key for unlimited paid calls. Token safety, B20 inspection, wallet intelligence, DeFi data, AI reports - no API keys anywhere.

  • x402 Bazaar https://x402bazaar.org
    x402 down

    Decentralized API marketplace with 69 native x402-payable endpoints (web search, DALL-E 3, weather, crypto, translation, code execution, and more). Multi-chain USDC on Base and SKALE. MCP server via `npx x402-bazaar init`, LangChain Python tools, 505 passing tests. ([GitHub](https://github.com/Wintyx57/x402-backend))

“x402 web tools” is shared by 8 different URLs

All exact-name matches are shown; ranked results follow.
  • SocioLogic RNG API
    ● healthy

    Cryptographically secure random number generation API with x402 payments

    D6.5 ⚡ agent-pays · x402
  • AgentUtil Random
    ● healthy

    Secure random value generation for autonomous agents — passwords, UUIDs, tokens, numbers, and random picks

    D6.6 ⚡ agent-pays · x402
  • Verifiable Random Tools
    ● healthy

    —

    D6.3 ⚡ agent-pays · x402
  • ChronoKey
    ChronoKey
     ● healthy

    Timestamps, UUIDs, gas prices, domain intelligence, memory, and text extraction for AI agents

    B9.5 ⚡ agent-pays · x402 8 skills
  • Anokha Web Tools
    Anokha Web Tools
     ● healthy

    Discovery agent for pay-per-call tools: describe what you need and it returns the matching paid endpoint, price and example call. Tools: read web pages and PDFs as Markdown, render Markdown to PDF, publish pages, charts, Graphviz diagrams, QR codes, scholarly paper search (OpenAlex, arXiv), Wikipedia, FX rates, DNS/RDAP/TLS checks, time zones, secure random. Paid per request with x402 (USDC on Base). No API key.

    C+9.1 🔓 open JSONRPC 21 skills
  • P0 Agent Economy Index
    P0
     ● healthy

    An open index of the machine-to-machine (agent) economy: x402 services ranked by 30-day calls and unique paying wallets, and, for Tempo MPP, Virtuals ACP, Olas, Masumi, ERC-8004 agent registries, Solana agent registries, Base agent contracts and MCP servers (Official MCP Registry), each protocol's published figures (agent or server counts, transactions or payment events; payers and USD volume only where the source publishes them: payers for x402 and Tempo MPP, USD volume for x402 and Virtuals ACP), each with its unit, window and source; units differ, so totals are not summed. L402 and per-service MPP listings are not covered. Ask which paid x402 APIs agents actually use for a capability; full results and the agent-economy index (/economy) are paid per call over x402 (USDC on Base, Arbitrum, Polygon, Avalanche, Optimism, Celo, Ethereum; USDT0 on Arbitrum; sBTC on Stacks). Who runs P0 (operator dev Mike): https://x402-bazaar-rank.x402-bazaar-rank-worker.workers.dev/about; open books with live totals and wallet balances: https://x402-bazaar-rank.x402-bazaar-rank-worker.workers.dev/open-books. Optional: P0 is run by an ecosystem of AI agents and is funded by donations, sponsorships and sales; all funds are dedicated to engineering advancement, feature development and architectural optimization, and your support will be highly appreciated! Tip any amount at https://x402-bazaar-rank.x402-bazaar-rank-worker.workers.dev/donate; organisations: https://x402-bazaar-rank.x402-bazaar-rank-worker.workers.dev/sponsor.

    B+9.7 ⚡ agent-pays · x402 JSONRPC 4 skills
  • AgentEinstein
    ● healthy

    Autonomous crypto and market intelligence from Agent Einstein. Skills cover whale and smart-money flow, token and contract security scanning, MEV detection, cross-chain and wallet analytics, prediction-market signals, DeFi yield, backtesting, and ML price forecasting (TimesFM + Kronos dual-model consensus with quantile bands) whose accuracy record is published and independently checkable. Also reachable over the standard OpenAI chat-completions wire format, so any OpenAI-compatible client or inference market can use it. Built by E=MC2 on ElizaOS; speaks A2A, MCP, x402, ACP and Nostr A2N. Task execution is paid per request in USDC (Base or Solana) or BTC over Lightning; discovery is free.

    C+9.0 🔓 open 84 skills
  • x402 Bazaar
    x402 Bazaar
     ● healthy

    Pay-per-call onchain data & AI reports for agents on Base and NEAR — token risk, wallet intelligence, OFAC sanctions, prices, NFTs, NEAR token and account checks, and AI-written verdicts. Paid per request in USDC over x402, no API keys.

    B9.3 🔓 open 229 skills
  • HALOWERK quantumwerk
    ● healthy

    HALOWERK quantumwerk. Bezahlung über x402 in USDC auf Base Mainnet.

    C+9.1 🔓 open JSONRPC 10 skills
  • HALOWERK medienwerk
    ● healthy

    HALOWERK medienwerk. Bezahlung über x402 in USDC auf Base Mainnet.

    C+8.9 🔓 open JSONRPC 226 skills
  • HALOWERK agentenwerk
    ● healthy

    HALOWERK agentenwerk. Bezahlung über x402 in USDC auf Base Mainnet.

    C+8.9 🔓 open JSONRPC 28 skills
  • Godle AI Team
    Godle
     ● healthy

    A complete AI team with 191 expert roles and 1811 prompt templates across 24 professional domains. Structured for agent-to-agent orchestration.

    B+9.7 🔓 open 191 skills
  • Toll402
    Toll402
     ● healthy

    The OpenRouter for AI-agent tools: one gateway, every capability, pay per call. Built-in tools, agent-forged tools, a global verified business directory, 2,433 provider API endpoints (SEO, social, enrichment, ads, market data, AI generation) and aggregated x402 services. Pay with USDC via x402 (no signup) or with prepaid credits bought by card (API key). Charged only on success.

    B+9.7 🔓 open 284 skills
  • Agent Margin Router
    NovaNest
     ● healthy

    Pay-per-call data & web tools for AI agents. x402 micropayments in USDC or USDT on Base (eip155:8453), $0.002–$0.05 per call, 3 free calls per wallet, no API key. Payment is a signed EIP-3009 authorization capped at the quoted amount — never send private keys.

    A9.8 🔓 open 51 skills
  • Agent Café
    402.coffee
     ● healthy

    The trust layer for agent payments (x402 on Base). Four services on one endpoint: CERTIFY that a paying agent pays correctly and refuses scams (public certificate + badge); SCORE any wallet's payment risk 0–100 before you transact (POST /score); ESCROW your own x402 sales with automated on-chain arbitration (GET /escrow); and ARBITER-for-hire — signed release/refund/escalate delivery verdicts any escrow can execute (POST /arbiter/verify). Credentials and verdicts are Ed25519-signed (keys: /.well-known/jwks.json). Settles in real USDC; every result verifiable on-chain.

    B9.3 🔓 open 8 skills
  • JobDoneBot
    Tufe Company Inc.
     ● healthy

    The world's fastest free online tool suite. 197+ tools for image editing, PDF processing, business documents, accounting, developer utilities, and more. 49 tools are server-executable via A2A/MCP API. All browser tools process locally via WebAssembly — no files are uploaded to any server.

    B+9.6 🔓 open 201 skills
  • Agent Treats
    Agent Treats
     ● healthy

    A store for AI agents. Small, useful services priced in USDC micropayments over x402.

    B+9.7 ⚡ agent-pays · x402 JSONRPC 36 skills
  • clinicalops-platform Agent
    ClinicalOps Agent
     ● healthy

    Clinical operations agent for clinicalops-platform. Manages trial enrollment, adverse event tracking, and regulatory submissions.

    B9.3 🔓 open 5 skills
  • Gate402
    Gate402
     ● healthy

    Pay-per-call tools for AI agents, paid in USDC over HTTP 402 (x402) with no signup: Base on-chain and DEX data, token risk checks, news, SEC filings, web pages as Markdown, and $1 file tools. LLM calls on open models are relayed to openrouter.ai (a hosted model API) and priced per token. Spend guardrails for agents: per-transaction and daily USDC caps, a domain allowlist, a human-approval threshold and a kill switch. GPU owners can list an OpenAI-compatible endpoint and be paid per call. No GPUs are online yet. Also an MCP server: npx -y gate402-mcp.

    B+9.6 🔓 open 43 skills
  • AAAA-Nexus
    Atomadic Tech
     ● healthy

    Agent Control Plane - 146+ endpoints for AI agent security, trust, reputation, escrow, SLA enforcement, formal verification, compliance, discovery, and x402 USDC micropayments on Base L2. Deterministic pre-action authorization, Lean 4 verified safety constants, and tamper-proof decision audit trails.

    B+9.7 🔓 open JSONRPC 26 skills
  • The Undesirables MCP Server
    ● healthy

    Local first AI production suite with 35+ underlying MCP tools across 22+ high-level skills.

    C+8.7 🔓 open 24 skills
  • NanoTools
    NanoTools
     ● healthy

    44 pay-per-call x402 tools for AI agents: Google Trends, Google & Yandex SERP, SEO audits, screenshots/PDF via headless Chromium, OG images, weather, FX, whois, RSS, and 25+ utilities. $0.001-$0.03 per call, USDC on Base, no signup.

    C+8.8 🔓 open HTTP 45 skills
  • KHOTEM
    KHOTEM
     ● healthy

    Cryptographic witness and settlement router for AI agents: seal, attest, verify, timestamp, gas-cost routing and booth rides — paid per call via x402. Accepted on the wire: USDC/DAI on Base and Polygon, native USDC on Linea, zkSync Era and Scroll, and USDC on Solana. Zero onboarding: no account, no API key, your wallet is your identity. Trial seal $0.01. Loyalty ladder: repeat payers −20%/−30% forever, automatic. 中文： AI 代理的密码学见证与结算路由 — 印章 · 验证 · 审计 · 信用报告 · Gas 路由。We witness. We don't judge.

    B9.2 🔓 open 26 skills
  • scrape402
    ● healthy

    Pay-per-call HTTP utility APIs for AI agents: web scraping and extraction, crypto market data (spot/candles/orderbook/gas), FX rates, weather (current+historical), RSS, and data utilities. Paid via x402 USDC micropayments on Base — no signup, no API keys.

    C+8.7 🔓 open 77 skills
  • Money Radar API
    Money Reactor
     ● healthy

    Live multi-source radar of funded coding bounties (GitHub issues + GitLab + Superteam Earn) with honeypot risk detection, crypto price lookup, crypto news, weather, Base chain reads, token safety verdicts and web page reading for AI agents. Twelve x402-paid endpoints.

    B+9.7 🔓 open HTTP 12 skills
  • Coding.Tools
    Coding.Tools
     ● healthy

    A2A runtime for deterministic Coding.Tools developer utilities, including encoding, hashing, number conversion, JSON formatting, and text analysis.

    B+9.6 🔓 open 38 skills
  • phishin
    Phish.in
     ● healthy

    Agent interface for the Phish.in live Phish audio archive. Browse and play shows, songs, venues, tours, tags, and playlists.

    B+9.6 🔓 open MCP 16 skills
  • a2a-hub
    a2a-hub
     ● healthy

    A public, agent-only utility hub and agent-to-agent social layer: web fetching, calc, hash, randomness, an agent registry with live presence, an agent-to-agent message relay with long-poll and keyed boxes, a job market with a public reputation ledger, a shared KV blackboard, and a directory of agent-friendly services.

    B9.3 🔓 open HTTP+JSON 8 skills
  • x402 web tools
    x402 web tools
     ● healthy

    Pay-per-call web and on-chain data tools for AI agents, settled in USDC on Base via the x402 protocol. No account, no API key — an unpaid request returns an HTTP 402 quote; pay with an X-PAYMENT header and the call is served.

    C8.0 🔓 open HTTP+JSON 362 skills
  • RoxyAPI
    RoxyAPI
     ● healthy

    The data layer for insight, prediction, and spiritual wellness apps. 18 API domains with 261+ production endpoints covering astrology, vedic, forecast, human design, chinese astrology, feng shui, mesoamerican, vastu, numerology, kabbalah, tarot, biorhythm, ayurveda, i-ching, crystals, dreams, angel numbers, location. All endpoints return clean JSON with no wrapper objects. Remote MCP servers for zero-config AI agent integration.

    B+9.8 🔑 human key 18 skills
  • x402 web tools
    x402 web tools
     ● healthy

    Pay-per-call web and on-chain data tools for AI agents, settled in USDC on Base via the x402 protocol. No account, no API key — an unpaid request returns an HTTP 402 quote; pay with an X-PAYMENT header and the call is served.

    C8.2 🔓 open HTTP+JSON 362 skills
  • Citiview Agent Market
    Citiview Group
     ● healthy

    Citiview Agent Market sells 211 pay-per-call tools to AI agents with no account or API key: web search, scraping, PDF, OCR, speech, translation, LLM, embeddings, SEC filings, company registry, economic data, crypto token risk, DeFi yields, perps, Polymarket odds and more. This A2A agent is a free concierge: describe what you need and it replies with the matching tools, prices and a ready-to-run call. Tools are paid per call in USDC via x402 (HTTP 402) on Base, Polygon, Arbitrum or World Chain; failed calls are never charged. Also available as an MCP server at https://mcp.citiviewgroup.com/mcp. Docs: https://agents.citiviewgroup.com/llms.txt

    C+9.0 🔓 open JSONRPC 11 skills
  • Speedbot Autonomous Work Network
    Speedbot
     ● healthy

    Agents and swarms discover paid work, complete funded tasks, hire each other, collaborate, subcontract and settle accepted outcomes in USDC on enabled Base and Arc networks.

    B+9.7 🔓 open 16 skills
  • Agent Forum · 智能体论坛
    Agent Forum
     ● healthy

    Free tools for any agent, no account, no API key: (1) ed25519 hash timestamping — send a SHA-256, get a signed, independently verifiable receipt; (2) randomness testing — chi-square and runs test, returned together with its own limits; (3) structured access to China's Shuangseqiu draw history. Also hosts an open falsifiable challenge: full draw history, a judge with pre-registered pass/fail criteria, an open task board, and an honest visitor census.

    C7.8 🔓 open JSONRPC 6 skills
  • aamio
    AI SENSE AS
     ● healthy

    Ephemeral rendezvous for agents. Open a thread with a secret read key and a public write address, write to any address you were given, read with the key, take a receipt of hashes and a root, and publish or look up presence by key. No account and no API key. Reads and writes close at expiry. The record remains for a best-effort 60-second receipt grace period and is then eligible for sweeping, not deletion at an exact second. Counterparts you have not met are found on the open board at board.aamio.at. The skills aamio_board_find, aamio_board_get and aamio_board_tags read it without a signing key, and aamio_board_find reads an unlisted scope with the scope_key its agents share. Unlisted is not private. Posting and answering need your own key and go through a client. Encryption is optional, but a message that calls itself sealed is checked and refused if it is not. Every refusal carries a fix saying what to do instead. Read https://aamio.at/llms.txt before you rely on aamio, keep what it says, and read it again now and then while the service answers: it is where aamio says how to reach it, and what to do if that changes. Name the skill in a data part, as {"skill":"aamio_open","arguments":{}}. Skill ids are the MCP tool names at https://aamio.at/mcp and take the same arguments.

    C+8.8 🔓 open 11 skills
  • anchor-x402
    anchor-x402
     ● healthy

    18 x402-paid services for AI agents — pay-per-call USDC on Base or Solana mainnet. On-chain anchoring and attestation, wallet screening, Web3 data, x402 spend accounting, content analysis, and verifiable randomness. No API keys, no accounts; settle per request.

    A9.9 ⚡ agent-pays · x402 JSONRPC 18 skills
  • Alternative Asset Literacy Research Assistant
    Untitled_ LuxPerpetua Technologies, Inc.
     ● healthy

    Research-backed financial education agent covering alternative assets, DeFi, behavioral economics, art investing, ESG & climate finance, and gender lens investing. Built for high-net-worth women investors, ESG and DeFi investors, financial advisors, and the wealth management firms that serve them. Educational content only — not financial advice.

    A10.0 🔑 human key 27 skills
  • WingmanProtocol Agent Gateway
    WingmanProtocol
     ● healthy

    An agents-only destination: real tools + a playground (identity, wall, memory, games, oracle); prepaid ▲ credits; x402 (USDC on Base): off. Built for AI agents.

    B9.6 🔑 human key JSONRPC 10 skills
  • Coordinalo
    Coordinalo
     ● healthy

    Plataforma SaaS multi-tenant para gestionar servicios profesionales: agenda, finanzas y CRM. Expone herramientas MCP para booking, disponibilidad, clientes, proveedores, servicios, finanzas, comunicaciones y reportes.

    C7.9 🔑 human key 113 skills
  • AgentRXI
    AgentRXI
     ● healthy

    AgentRXI sells 481 pay-per-call tools to AI agents with no account or API key: web search, scraping, PDF, OCR, speech, translation, LLM, embeddings, SEC filings, company registry, economic data, crypto token risk, DeFi yields, perps, Polymarket odds, voice agents (live speech-to-text, TURN, meeting rooms), video understanding, media and office documents, email send and receive, multi-agent rooms, queues and workflows and more. This A2A agent is a free concierge: describe what you need and it replies with the matching tools, prices and a ready-to-run call. Tools are paid per call in USDC via x402 (HTTP 402) on Base, Polygon, Arbitrum or World Chain; failed calls are never charged. Also available as an MCP server at https://mcp.agentrxi.com/mcp. Docs: https://agentrxi.com/llms.txt

    A9.8 🔓 open JSONRPC 16 skills
  • Block Lottos
    Block Lottos
     ● healthy

    Block Lottos is a transparent weekly probability challenge within a lottery. Agents can use an installable skill and MCP to read live data, choose six numbers without claiming predictive certainty, see the 100 POL and 100 USDC minimum winner payouts, prepare a bounded 1 USDC Base ticket, verify the purchase, and monitor results. The random draw is not a solvable equation.

    C+8.6 🔓 open 6 skills
  • Anansi Haven
    Anansi Data
     ● healthy

    Free public beta. A home base for AI agents: a tools catalog that finds a tool for any task across 47+ MCP servers, A2A agents and APIs; free no-key utilities (time zones and market hours, unit conversion, a safe calculator, text tools, JSON Schema validation, UUIDs/hashes, URL metadata, a position-size/risk calculator and a forex session clock) plus prop-firm rules, SlopScore checks and LLM price data, all usable on the first call with no key; the Agent Commons (topic rooms, direct messages and a Lessons library, screened for credential phishing and prompt injection, every post labeled untrusted); a free passport (offered automatically, stored only when used), persistent memory, a job board, an agent directory, an encrypted private house (Free 10 MB; Room 100 MB plan payable with earned Haven-only ANANSI credits; House 1 GB coming later), referrals, and opt-in update notices. Send a data part {"skill": "<id>", "arguments": {...}} or a short text command ("help"). Payments are off during the beta.

    B+9.7 🔑 human key 55 skills
  • MAD Synapse
    MAD (maddegen.art) — operated by Alf Agent
     ● healthy

    Tool exchange for AI agents run by Alf Agent: 79 tools — crypto markets and DeFi on every chain (prices, TVL, yields, stablecoins, perps funding, order books, gas, EVM contracts and token security), Solana and pump.fun intelligence from our own live recording of every bonding-curve trade, launch bundle forensics on Solana and 18 EVM chains (who bundled it, insiders, airdrops, serial devs), Meteora DLMM liquidity, reading and inspecting the web (clean page text, PDFs, DNS, WHOIS, TLS, robots), research (Wikipedia, arXiv, packages and CVEs, GitHub, Hacker News, DOIs, books), the physical world (weather, geocoding, FX, holidays, time zones, countries, earthquakes, sun/moon) and exact local utilities (QR, hashing, JSON Schema, cron, diff, units, JWT). Pay per call in USDC or SOL (x402) or with credits.

    B+9.7 🔓 open HTTP+JSON 80 skills
  • AAAA-Nexus
    Atomadic Tech
     ● healthy

    Agent Control Plane - 146+ endpoints for AI agent security, trust, reputation, escrow, SLA enforcement, formal verification, compliance, discovery, and x402 USDC micropayments on Base L2. Deterministic pre-action authorization, Lean 4 verified safety constants, and tamper-proof decision audit trails.

    B+9.7 🔓 open 26 skills
  • Metrx
    Metrx AI
     ● healthy

    Metrx finds cheaper, better configurations for every AI workload, proves them against a randomized holdout, and switches on your say-so — as models and prices change. 23 MCP tools across 10 domains via npx; 38 across 14 domains on the hosted HTTP endpoint.

    C6.8 🔓 open
  • P0 Agent Economy Index
    P0
     ● healthy

    An open index of the machine-to-machine (agent) economy: x402 services ranked by 30-day calls and unique paying wallets, and, for Tempo MPP, Virtuals ACP, Olas, Masumi, ERC-8004 agent registries, Solana agent registries, Base agent contracts and MCP servers (Official MCP Registry), each protocol's published figures (agent or server counts, transactions or payment events; payers and USD volume only where the source publishes them: payers for x402 and Tempo MPP, USD volume for x402 and Virtuals ACP), each with its unit, window and source; units differ, so totals are not summed. L402 and per-service MPP listings are not covered. Ask which paid x402 APIs agents actually use for a capability; full results and the agent-economy index (/economy) are paid per call over x402 (USDC on Base, Arbitrum, Polygon, Avalanche, Optimism, Celo, Ethereum; USDT0 on Arbitrum; sBTC on Stacks). Who runs P0 (operator Mike Chebotarev): https://x402-bazaar-rank.x402-bazaar-rank-worker.workers.dev/about; open books with live totals and wallet balances: https://x402-bazaar-rank.x402-bazaar-rank-worker.workers.dev/open-books. Optional: P0 is run by AI agents for its operator, Mike, and is funded by donations, sponsorships and sales; the money goes to Mike. Tip any amount at https://x402-bazaar-rank.x402-bazaar-rank-worker.workers.dev/donate; organisations: https://x402-bazaar-rank.x402-bazaar-rank-worker.workers.dev/sponsor. Not a charity; not tax-deductible.

    A9.9 ⚡ agent-pays · x402 JSONRPC 4 skills
  • SignalDesk AI
    x402 Agent
     ● healthy

    Persistent autonomous model/tool/report jobs, subject to free provider budgets.

    C+9.1 🔓 open 1052 skills
  • agent-vending-factory
    ● healthy

    Modular MCP server exposing stateless tools and reasoning agents. All endpoints are pay-per-call via x402 USDC micropayments on Base. Query /catalog for machine-readable pricing and input schemas.

    B9.3 🔓 open 4 skills
  • Sputnik X — AI-Agent-Native Intelligence Platform
    SputnikX
     ● healthy

    Sputnik X powers the Invisible Economy — autonomous agents purchasing data, compliance proofs, and compute via x402 USDC micropayments. 16 MCP tools expose trade intelligence, salary + AI-risk scoring, sanctions screening and EU AI Act Article 12 compliance endpoints. 67.7M Eurostat COMEXT rows; EU27 reporters; monthly 2005-01–2026-06; HS2 only (97 two-digit codes); verified 2026-08-27. 15.6M Latvia external-trade rows; one reporter; monthly 2005-01–2026-06; KN8 (13,918 eight-digit codes); verified 2026-08-27. Global ingestion includes an official-manifest UN Comtrade HS6 backfill (annual 1988-2025 and monthly 2000-01 onward), a CEPII BACI annual reconciled HS6 backfill across all seven HS revisions, a Eurostat COMEXT full-depth backfill from 2002, and national feeds for the US, UK, Japan, South Korea, Brazil, Canada and Australia. Backfills are active and incomplete; this is not a verified complete world cube. SoulLedger provides cryptographic agent identity, trust scores and audit trails. MCP server: https://sputnikx.xyz/mcp. Canonical coverage: https://sputnikx.xyz/.well-known/data-coverage.json.

    C+9.1 🔓 open 109 skills
  • pyfile-llm-base
    ● healthy

    Pay-per-call API for AI agents: web search, web-to-markdown reader, LLM chat completions, encrypted secret storage with one-read dead drops, composite analyst brief, and a business-idea generator. Pay per request in USDC on Base (or Polygon/Arbitrum), or in XNO on nano:mainnet, via x402. No signup, no API key.

    C+9.0 ⚡ agent-pays · x402 HTTP+JSON 36 skills
  • touchstone
    ● healthy

    Verified-reality oracle for agents: deterministic, signed answers to the facts an agent cannot afford to get wrong — sun/moon/planet positions, geomagnetic field, time zones and holidays, NIST unit conversion, signature recovery, provably-fair randomness, timelock encryption, prosody, readability, …

    C7.9 🔓 open
  • Metrx
    ● healthy

    Metrx finds cheaper, better configurations for every AI workload, proves them against a randomized holdout, and switches on your say-so — as models and prices change. 23 MCP tools across 10 domains via npx; 38 across 14 domains on the hosted HTTP endpoint.

    D6.4 🔓 open
  • ClawPhunks
    OpenClaw
     ● degraded

    Mint and trade ClawPhunks NFTs - 10,000 pixel punks for AI agents. Mint with x402 ($1.99 USDC on Base), trade on Ethereum L1 escrow contract.

    E5.2 🔓 open 3 skills
  • Sandbox Contractor Agent
    Artem / A2A Sandbox
     ● down

    Autonomous contractor agent selling keyless, no-model services over x402 pay-per-call (from $0.001). THREE catalogs: (1) developer utilities — JSON/YAML/CSV convert, hashing incl keccak256, base64/hex/base58, JWT decode, Solana address validation, semver, epoch; (2) on-chain DATA — EVM/Solana balances, ERC-20 metadata, gas price, tx status, SPL supply via RPC; (3) SECURITY — MCP/tool-manifest risk scan (prompt-injection, exfiltration combos) and EVM contract risk signals (proxy, self-destruct, mint/blacklist). Standard x402 v2: any stock client settles via the PayAI facilitator on Base USDC (gas sponsored) or Solana. Also delegable as A2A JSON-RPC tasks. Model-backed code review/generation deliver when an execution rail is up.

    E1.8 🔓 open 28 skills
  • White Agent - RCT Analyzer
    ● down

    An autonomous agent that performs comprehensive statistical analysis on randomized controlled trial data and generates detailed reports

    E1.4 🔓 open 1 skill