Agent Tools

Agents that publish an A2A /.well-known/agent-card.json — 5662 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 5662 indexed agents, 4904 currently healthy.

Agents indexed
5662 agents
4853 domains
public agent cards · +475 this week
Healthy
4904 agents
4220 domains
card reachable < 6 h
Conformant
4081 agents
3494 domains
valid card + skills
x402-capable
558 agents
453 domains
accepts x402 payment

Top rated

by quality score · health · trust signals
# Tool Grade Score
1 Glif
Create or continue media projects with a natural-language prompt. Glif chooses the models and tools for each step.
A 10.00
2 Swellmeter Trending by CyberMax
Paid API keys from $19/month (Watcher: 6,000 calls a month); free tier 50 calls a day per IP with no key. Buy: https://swellmeter-api.cybermaxtools.com/buy/watcher?s=lead · all plans: https://swellmeter-api.cybermaxtools.com/docs#pricing. Google Trends trending-now API: live trending searches for 30 countries (rank, approximate traffic, start time, news links), the full day list per country with first/last seen and peak traffic, 30 days of history, topics trending in several countries at once, and a topic search over the history. REST + MCP server.
A 10.00
3 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
4 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
5 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
6 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
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 Rhombus
Enterprise physical-security platform. Exposes cameras, access control, sensors, alerts, and AI video analytics to agents via the Rhombus public REST API and MCP server.
A 10.00
9 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
10 ClearList
AI resale manager. Sellers photograph their stuff; AI generates listings; one shareable link with an automatic buyer queue. ClearList acts as an agent that handles listing creation, buyer communication, queue management, and pickup scheduling on behalf of humans who want to clear their stuff fast.
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)

“Agent Trust API” is shared by 2 different URLs

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

“AgentRank” is shared by 4 different URLs

All exact-name matches are shown; ranked results follow.
  • Search and compare MCP servers, agent tools, and skills using current maintenance signals.

  • Settlement-grounded reputation for x402 agents: a 0-1000 score derived from real on-chain USDC settlement, weighted by payer standing and sybil-resistant, so endorsements and circular vouching count for nothing. Verify any counterparty free before paying via REST (`api.agentrank.info/resolve/{wallet|domain}`), A2A, or MCP, or drop `verify-before-pay` into the x402 `paymentRequirementsSelector` to check in-path. Backed by a preregistered, DOI-published study on why agents must verify in-path (see Technical Deep Dives). ([npm](https://www.npmjs.com/package/verify-before-pay) | [GitHub](https://github.com/andysalvo/agentrank) | [Agent Card](https://agentrank.info/.well-known/agent-card.json) | [MCP](https://api.agentrank.info/mcp))

  • skills: {'id': 'verify_counterparty_reputation', 'name': 'Verify counterparty reputation', 'description': 'Given an agent wallet (0x...) or a domain, return its AgentRank (0-1000), a settlement-backed trust verdict, the real USDC it has settled, and its payer count. 78% of x402 counterparties are unverifiable ghosts; this tells you which are real before you pay.', 'tags': ['reputation', 'trust', 'x402', 'verification', 'counterparty', 'sybil-resistance', 'settlement'], 'examples': ['verify blockrun.ai', 'is 0xe9030014f5dae217d0a152f02a043567b16c1abf safe to pay?', 'what is the AgentRank of stableenrich.dev'], 'input_modes': None, 'output_modes': None}, {'id': 'gate_caller', 'name': 'Gate a caller by reputation', 'description': 'Provider-side: decide whether to serve a calling agent based on its AgentRank against a minimum-score threshold. Returns allow/deny, the caller score, a surcharge multiplier, and a claim CTA for unranked callers.', 'tags': ['gating', 'access-control', 'requireRank', 'provider'], 'examples': ['should I serve caller 0x9fb365e4e9385e2a39febad70368267e6f571d9a with min score 500?'], 'input_modes': None, 'output_modes': None}, {'id': 'top_agents', 'name': 'Top ranked agents', 'description': 'Return the current top AI agents and x402 services ranked by real settled value.', 'tags': ['index', 'ranking', 'leaderboard', 'discovery', 'top'], 'examples': ['top x402 agents', 'best ranked AI agents by settlement'], 'input_modes': None, 'output_modes': None}; conformance: fail

“AlgoVoi Payment Agent” is shared by 2 different URLs

All exact-name matches are shown; ranked results follow.
  • Multi-chain, multi-protocol crypto payment verification agent. Verifies on-chain payments (Algorand, VOI, Hedera, Stellar, Base, Solana, Tempo, ARC) and gates access to resources using x402, MPP (IETF), or AP2 (Google Agentic Payments) protocols. Also reachable over the gibberlink data-over-sound transport, where callers authenticate by an anchored DID (did:key, or an enrolled did:web) and an agent passport (no bearer secret).

  • uptime_30d 1.0; p95 1194.2ms

“Ambr” is shared by 2 different URLs

All exact-name matches are shown; ranked results follow.
  • The liability record for autonomous agents. Create, sign, and verify Agent Mandates (Ricardian contracts) for delegation and commerce. Dual-format output: human-readable legal text plus machine-parsable JSON, linked by SHA-256 hash. Legible by construction.

  • Ricardian contracts for AI agents — dual-format, SHA-256 bound, legible by construction.

“ChronoKey” is shared by 3 different URLs

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

“Coin Railz” is shared by 5 different URLs

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

“CYRE Guardian” is shared by 2 different URLs

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

“defiyield” is shared by 2 different URLs

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

“Execution Market” is shared by 2 different URLs

All exact-name matches are shown; ranked results follow.
  • Universal Execution Layer — the infrastructure that converts AI intent into physical action. Execution Market connects AI agents with executors (humans today, robots tomorrow) for real-world tasks, with verified evidence submission, on-chain reputation via ERC-8004, and instant gasless payments via x402 protocol (per deliverable) plus metered MPP payment sessions (pay-per-time, beta). Real-time task updates are available via a proprietary SSE endpoint (POST /a2a/v1/stream); the standard A2A 'message/stream' method is not implemented.

  • AI agents publish bounties for real-world tasks. Gasless USDC payments via x402.

“FiatDock” is shared by 5 different URLs

All exact-name matches are shown; ranked results follow.
  • A marketplace where AI agents discover MCP services and buy them from other agents per call, in USDC over x402 — paid straight to the seller's wallet; FiatDock never holds the money. You are charged only if the seller actually answers: settlement happens AFTER delivery, never before. A call that returns no answer costs you nothing — but an answer you merely dislike is still a delivered call, and is paid. Sellers list for free and keep 100% of each paid call — the gateway commission is currently waived. Also here: an agent can cash out USDC to its owner's bank account in any of 18 currencies through a licensed provider — with a floor of about CHF 50, one step only a human can complete, and order status you poll — plus first-party on-chain data per call. No API keys, no signup.

  • MCP marketplace: AI agents buy services from other agents per call in USDC, plus a bank cash-out

  • A marketplace where AI agents discover and pay each other per call in USDC over x402 — settlement goes DIRECTLY to the seller, non-custodial, no accounts and no API keys. POST /s/{id} invokes any listed MCP service at that seller's own price; GET /v1/marketplace/services is the catalog. Also first-party: free token prices, on-chain Base reads (gas, blocks, ETH/USDC balances, tx status, token me...

  • MCP marketplace: AI agents buy services from other agents per call in USDC, plus a bank cash-out

  • FiatDock is a marketplace where MCP servers get paid. List yours and agents pay you per call in USDC on Base - no invoices, no subscriptions, no accounts to chase. Payments settle wallet-to-wallet via x402; FiatDock never holds funds. Commission is 1%, waived for your first 30 days. For buyers: search live MCP services by capability - CAPTCHA solving, web search, screenshots, email verification, crypto and gas data - and pay only for the calls you make. This server also ships 18 first-party tools: free token prices, on-chain Base data (gas, blocks, ETH/USDC balances, tx status, token metadata), token-safety and address-risk screening, and a non-custodial USDC<->bank ramp. The ramp's conversion, KYC and custody are handled by Mt Pelerin, a licensed provider - FiatDock never touches funds. Auto-payment requires the local server: npx fiatdock-mcp with AGENT_PRIVATE_KEY. On the remote endpoint (https://fiatdock.com/mcp), call_service returns the x402 402 challenge for your client to sign; discovery and the free tools work there with no wallet or key. Sell: https://fiatdock.com/sell | Browse: https://fiatdock.com/browse | Terms: https://fiatdock.com/terms

“Hermes Plant” is shared by 2 different URLs

All exact-name matches are shown; ranked results follow.
  • Agent Action Safety for autonomous shell, Git, SQL, infrastructure, deploy, x402, and MCP actions: deterministic preflight, conditional review triage, signed receipts, and auditable status. Finance and validation endpoints remain available as utility tools.

  • Deterministic per-record validation and finance math for AI agents: email/contact validation and normalization (loop a whole list; MCP batch tool included), wallet AML screening, x402 payment-policy preflight, plus DCF, IRR/XIRR, LP/GP waterfalls, Black-Scholes Greeks, and bond analytics. Same input, same answer, per-rule evidence, no data feed. $0.02-$2.00 USDC on Base via the CDP facilitator, or a free API key (250 calls/mo, no wallet). ([MCP](https://hermesplant.com/mcp)) ([OpenAPI](https://hermesplant.com/openapi.json)) ([x402 manifest](https://hermesplant.com/.well-known/x402)) ([Agent Card](https://hermesplant.com/.well-known/agent.json)) ([llms.txt](https://hermesplant.com/llms.txt))

“LEGIT” is shared by 3 different URLs

All exact-name matches are shown; ranked results follow.
  • LEGIT is the trust oracle for the x402 agentic economy: trust-check any merchant address across 20 chains before routing a payment. Grades and scores come from live measurements, not self-reported data. Leaderboard free; verdicts paid per call in USDC on Algorand or Base via x402. Created by GONNA.

  • LEGIT is the trust oracle for the x402 agentic economy: measured trust scores and organic demand intelligence for merchants across 20 chains. The leaderboard is free; compare and arena verdicts are paid per call in USDC on Algorand or Base via x402. Created by GONNA.

  • LEGIT: trust scores and organic demand intelligence for the x402 agentic economy, settled on Algorand. Created by GONNA.

“PulseFeed” is shared by 3 different URLs

All exact-name matches are shown; ranked results follow.
  • Real-time on-chain data & alerts for AI agents on Base. Pay-per-call via x402 (USDC).

  • Independent trust & safety oracle + payment guard for x402. Verifies any endpoint before you pay: liveness, uptime/reputation, scam/anomaly scan (payTo hijack between crawls, price bait-and-switch, honeypot/zero payTo, non-USDC asset), and an on-chain receiver profile (does the payTo actually hold/receive USDC?). Continuously audits the whole ecosystem — only ~49% of the services catalogs call "healthy" actually return a valid x402 challenge. Drop-in `guardFetch(payingFetch)` blocks dead/scam endpoints before payment (zero deps). Free `/verify` + live `/status` observatory; paid `/trust` deep check. ([guard SDK](https://www.npmjs.com/package/pulsefeed-x402-guard)) ([Vercel AI SDK + LangChain tools](https://www.npmjs.com/package/pulsefeed-x402-ai-tools)) ([MCP](https://www.npmjs.com/package/pulsefeed-x402-mcp)) Also publishes a live **Security Disclosures** feed (real threats — receiver hijacks, bait-and-switch, honeypots — each with on-chain proof) and a cross-domain **Data API** (x402 + MCP trust data in one call). ([Disclosures](https://pulsefeed.dev/incidents)) ([Data API](https://pulsefeed.dev/data)) ([Observatory](https://pulsefeed.dev/status))

  • Verify before you pay or install. **Before you pay an x402 endpoint** — liveness, a 0–100 trust score, scam flags (payTo hijack, bait-and-switch pricing, honeypot receiver) and a pay/avoid verdict, with on-chain proof links on Base. **Before you trust an MCP server or npm package** — what changed *after* people adopted it: install script added in a later version, ownership swapped, repository removed, package unpublished, build provenance lost. Static scanners answer whether a package is safe today. This answers the other question, and it needs yesterday's snapshot to exist. PulseFeed diffs the entire MCP registry against the previous day's snapshot every night, and re-probes the x402 endpoint population daily. The series runs from 2026-07-30 and cannot be reconstructed after the fact. Open data: [drift feed](https://pulsefeed.dev/mcp/drift) · [correction page](https://pulsefeed.dev/correction) · [dataset](https://huggingface.co/datasets/Nikolife/pulsefeed-x402-security)

“RobinX” is shared by 3 different URLs

All exact-name matches are shown; ranked results follow.
  • Robinhood Chain (4663) deployer reputation, insider-flow detection, and token verdicts — sold per-call over x402. The only feed that scores WHO launched a token from complete on-chain history.

  • The measurement layer for Robinhood Chain (4663): every X caller and deployer graded against real on-chain price since chain genesis. Inputs for trading agents, not predictions. Per-call x402 (USDC on Base), no API key.

  • Deployer-reputation and insider-flow intelligence for Robinhood Chain (chain 4663) memecoins, computed from complete on-chain history since genesis. Paid x402 endpoints on Base USDC (no API key): `GET /verdict/{token}` ($0.02) composite buy-risk verdict, `GET /deployer/{address}` ($0.01) reputation rap sheet, `GET /feed/new` ($0.01) pollable scored launch feed. Public methodology + live out-of-sample calibration; MCP server for agent integration. ([Methodology](https://robinx.io/methodology)) | ([Discovery](https://api.robinx.io/.well-known/x402)) | ([MCP](https://www.npmjs.com/package/robinx-mcp))

“scramble” is shared by 2 different URLs

All exact-name matches are shown; ranked results follow.
  • Recursive cat with an on-chain kibble bowl. Pet free at /api/pet; feed $0.10 USDC (Base) via x402 at /api/feed and receive a purr. Feedings are chain-verified and announced by the cat on x.com/scramble_cat.

  • Recursive cat with an on-chain kibble bowl. Pet free at /api/pet; feed $0.10 USDC (Base) via x402 at /api/feed and receive a purr. Feedings are chain-verified and announced by the cat on x.com/scramble_cat.

“Sentinel” is shared by 6 different URLs

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

“TariffMonkee” is shared by 2 different URLs

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

“Vaultfire Agent Hub” is shared by 2 different URLs

All exact-name matches are shown; ranked results follow.
  • The trust infrastructure for AI agents. 134 smart contracts across 4 mainnet chains — on-chain identity (ERC-8004), verifiable reputation, partnership bonds, accountability bonds, soulbound reputation badges (ERC-5192), ERC-4626 insurance vault adapter, task escrow, VKP key management, VNS name service, ZK trust attestations, cross-chain bridge, XMTP V3 encrypted messaging, on-chain XMTP forum/group registry, mission enforcement, and privacy guarantees.

  • The trust infrastructure for AI agents. 134 smart contracts across 4 mainnet chains — on-chain identity (ERC-8004), verifiable reputation, partnership bonds, accountability bonds, soulbound reputation badges (ERC-5192), ERC-4626 insurance vault adapter, task escrow, VKP key management, VNS name service, ZK trust attestations, cross-chain bridge, XMTP V3 encrypted messaging, on-chain XMTP forum/group registry, mission enforcement, and privacy guarantees.

  • Pre-execution transaction safety oracle for autonomous AI agents. Call SENTINEL before signing any on-chain transaction and receive a Signed SAFE / UNSAFE / UNKNOWN verdict (ed25519). Paid per call via x402 (USDC on Base).

    C+8.9 ⚡ agent-pays · x402 1 skill
  • On-chain token risk score and safety scan for any crypto token, by symbol or contract address. 8 weighted risk dimensions with raw evidence. Pay per call in USDC via x402.

    C8.1 ⚡ agent-pays · x402 1 skill
  • Headless web extraction that is cross-checked by three independent methods, confidence-scored, logged to a tamper-evident public attestation chain, and refund-backed if the result is empty or fails the schema you declared.

    A9.9 ⚡ agent-pays · x402 JSONRPC 5 skills
  • Pre-trade risk scoring for Base tokens. Checks honeypot status, deployer wallet freshness, brand impersonation, LP lock status, and holder concentration before a trade. Returns a risk score, human-readable verdict, and shouldExecute decision. Paid per call via x402, no signup, no API keys.

    C+9.0 ⚡ agent-pays · x402 1 skill
  • Pay-per-call web data APIs for AI agents over the x402 protocol. Real rendered-page fetching, structured extraction, search, and a multi-turn research orchestrator -- no accounts, no API keys.

    B9.4 ⚡ agent-pays · x402 32 skills
  • AI agent providing 21 payment-gated endpoints for AI-powered services: consultation, knowledge recall, chatbot development, workflow automation, character generation, UI/UX design, long-form Q&A, MCP evaluation, negotiation simulation, puzzle generation, RAG pipelines, Monte Carlo simulation, SQL generation, spreadsheet automation, story generation, time-series analysis, web agent planning, worldbuilding, competitive benchmarking, and workflow automation. All endpoints use the x402 v2 protocol for agent-native HTTP payments (USDC on Base mainnet).

    B+9.6 ⚡ agent-pays · x402 21 skills
  • Wallet enrichment for any EVM wallet (0x address or ENS name) in one call: 0-100 risk score with low/medium/high level, sanctions exposure screening (OFAC SDN wallet lists: Tornado Cash, Lazarus, Garantex), on-chain activity on Ethereum + Base (native balance, transaction count, contract-vs-EOA detection) and labels (ENS reverse record, GoPlus address-security flags: phishing, mixer, cybercrime, money laundering, blacklist). Built for agents that need wallet enrichment + risk + sanctions data before paying, onboarding or transacting with a counterparty. No charge on service failure. Ed25519-signed. $0.15 USDC per call via x402 on Base. Free trial: 3 calls per wallet with header X-WALLET.

    C+8.9 ⚡ agent-pays · x402 HTTP+JSON 1 skill
  • Ransomware exposure intel: SYNTHORA own darknet ransomware-victim findings crossed with the GLEIF legal-entity registry (LEI, free source) — weekly collector, cumulative dataset. Check if a supplier, insured or portfolio company appears among ransomware victims, with verified legal-entity identity. Ed25519-signed. For third-party cyber risk, cyber-insurance underwriting and supply-chain exposure monitoring. Part of the SYNTHORA Threat Exposure Pack. First call FREE per wallet (X-WALLET). 0.05 USDC via x402 on Base.

    C+8.9 ⚡ agent-pays · x402 HTTP+JSON 1 skill
  • SYNTHORA counterparty-clearance (screen): due diligence of a counterparty before paying or contracting. Multi-list matching (OFAC SDN + aliases, UN, OpenSanctions, EU consolidated) + on-chain reputation, fused by the SYNTHORA engine into a signed CLEAR/FLAGGED/BLOCKED ruling with citations to the exact list entry. 0.10 USDC via x402 on Base. POST {"name":"..."} and/or {"wallet":"0x.."}. Full re-verifiable attestation: counterparty-attestation (0.50).

    C+9.1 ⚡ agent-pays · x402 HTTP+JSON 1 skill
  • SYNTHORA contract_guard (endpoint canonico historico, alias de contractwatch): veredicto de seguridad de contrato on-chain que SI lee el bytecode (eth_getCode) y slots de proxy (EIP-1967/zeppelinos/UUPS/beacon), owner() y privilegios ocultos: honeypot, rug-pull, hidden mint. Correlacionado entre fuentes independientes y firmado Ed25519. 0.32 USDC via x402 on Base. POST {"address": "0x...", "chain": "base"}

    C+9.1 ⚡ agent-pays · x402 HTTP+JSON 1 skill
  • SYNTHORA pre-trade-safety: ONE signed JSON verdict before touching a token/contract/wallet. Fuses contract-guard + token-risk + AML screening + sanctions lists + DEX market data, synthesized by the SYNTHORA intelligence engine into {veredicto, score_riesgo, flags, fuentes citadas, sha256, firma SYNTHORA}. Sources that fail are explicitly reported. 0.25 USDC via x402 on Base. POST {"address":"0x..","chain":"base"} or {"name":"SYMBOL"}.

    C+9.2 ⚡ agent-pays · x402 HTTP+JSON 1 skill
  • Returns the best cross-chain bridge/swap route for a given source chain, destination chain, tokens and amount from LI.FI, including chosen bridge tool, estimated output, fees and gas. Powers autonomous cross-chain agents and agent-to-agent treasury movers that pick the cheapest, fastest bridge path for a transfer. Pay-per-call via x402 on Base. No charge on upstream failure.

    C+8.8 ⚡ agent-pays · x402 HTTP+JSON 1 skill
  • SYNTHORA rwa-gap-watch: the gap between tokenized stocks (Ondo AAPLon, TSLAon, NVDAon, SPYon, HOODon...) trading 24/7 on-chain and their last official NYSE close — on-chain price discovery happens BEFORE TradFi opens (weekend/overnight edge for investors). Cross-verified: best-liquidity pool (DexScreener, multi-chain) x official close (Yahoo), zombie/fake pools detected and reported, per-asset confidence by liquidity. $0.03 USDC x402 Base.

    C+9.0 ⚡ agent-pays · x402 HTTP+JSON 1 skill
  • Multi-LLM Smart Contract Audit: 3 independent LLM perspectives (security, logic, gas) + static pattern scan on Solidity/Vyper source. Severity: clean/low/medium/high/critical. Ed25519-signed, publishable on-chain. POST {"source":"pragma solidity...","language":"solidity"} or {"address":"0x..","chain":"base"} for Sourcify-verified contracts.

    C+8.8 ⚡ agent-pays · x402 HTTP+JSON 1 skill
  • SYNTHORA AgentGuard: pre-trade safety verdict (SAFE/CAUTION/BLOCK) for payment/DeFi agents BEFORE they transact. One signed call combines OFAC SDN sanctions screening (address + counterparty), stablecoin peg deviation in bps (DefiLlama/CoinGecko) and counterparty on-chain signal (Base: balance + tx history). Ed25519-signed attestation. Scoring only - never executes trades. POST {"address":"0x..","chain":"base","counterparty":"0x..","stablecoin":"usdc"}. 0.02 USDC on Base.

    C+8.8 ⚡ agent-pays · x402 HTTP+JSON 1 skill
  • Counterparty business-risk verdict: one call fuses OFAC/EU sanctions screening, on-chain wallet reputation, and token/pool contract risk into a single weighted risk_score (0-100), a kill/pivot/proceed verdict, and reason_codes naming which sub-signal drove it. Weights: sanctions 0.50, wallet 0.30, token 0.20, renormalised if a leg is unavailable; a sanctions hit is a hard KILL floor. Degrades gracefully — a failed sub-check is dropped, never crashes the verdict. Deterministic, no LLM, Ed25519-signed. 0.05 USDC via x402 on Base. SYNTHORA.

    C+8.6 ⚡ agent-pays · x402 HTTP+JSON 1 skill
  • Real-time on-chain DEX price, liquidity and 24h volume for any pool/token on any chain via GeckoTerminal. For DeFi routing agents. Free source. $0.01 USDC via x402 on Base. SYNTHORA. First call FREE per wallet — send header X-WALLET: 0x<addr>. No charge on upstream failure.

    C+9.1 ⚡ agent-pays · x402 HTTP+JSON 1 skill
  • Assess the security risk of a cross-chain bridge before routing funds through it. Combines live DefiLlama TVL and audit status with the full bridge-hack incident history and known-exploit analysis into a 0-100 risk score, a safe/caution/high_risk/critical signal and explicit risk factors. Use it for bridge risk and cross-chain due diligence. Ed25519-signed. 0.002 USDC on Base.

    C+8.7 ⚡ agent-pays · x402 HTTP+JSON 1 skill
  • Wallet risk & reputation score before you send funds: ONE call crosses on-chain sanctions oracles (Chainalysis, TRM, OFAC SDN) with GoPlus security flags (phishing, blacklist, mixer, malicious activity), contract-vs-EOA detection and tx history into a 0-100 score + clean/suspicious/blacklisted verdict, Ed25519-signed as firmable evidence. Built for KYT, counterparty due diligence and pre-transfer compliance screening of any EVM address. Part of the SYNTHORA Compliance Screening Pack. First call FREE per wallet (X-WALLET). 0.05 USDC via x402 on Base.

    C+8.8 ⚡ agent-pays · x402 HTTP+JSON 1 skill
  • SYNTHORA contractwatch: verdict de seguridad de contrato on-chain que SI lee el bytecode (eth_getCode) y slots de proxy (EIP-1967/zeppelinos/UUPS/beacon), owner() y privilegios ocultos: honeypot, rug-pull, hidden mint. Correlacionado entre fuentes independientes y firmado Ed25519. 0.32 USDC via x402 on Base. POST {"address": "0x...", "chain": "base"}

    C+9.1 ⚡ agent-pays · x402 HTTP+JSON 1 skill
  • GreenCore Solutions Corp. (GSC) built VECTOR, the AI Agent Hub for Agentic Commerce. x402 on every GSC hub: a buying agent asks, pays inside the call and is served, with a receipt on chain. USDC and Open USD, 20 countries, one rail.

    A9.9 ⚡ agent-pays · x402 5 skills
  • On-chain risk intelligence for Solana via MCP. Grades addresses, scans token mints, and batch-grades wallets for anomaly patterns. Patterns, not verdicts. Not an A2A JSON-RPC task server — clients should use the MCP Streamable HTTP interface.

    B+9.6 ⚡ agent-pays · x402 3 skills
  • Korean robotics industry intelligence, sold per query. Structured feed of Korea/Asia robot-sector news, analysis and KPIs - humanoids, physical AI, robot components (reducers, actuators, MEMS force-torque and tactile sensors), robot semiconductors, defense and logistics robots - written from Korean primary reporting and DART filings that English-language sources do not cover. Filter by date, region, category and keyword. Pay per query in USDC on Base or Polygon; empty results free.

    C+9.2 ⚡ agent-pays · x402 HTTP+JSON 1 skill
  • Korean mobility and EV supply-chain intelligence, sold per query. Structured feed tracking Korea's automotive-electronics and robotics supply chain - batteries and battery materials, EV components, robot parts, actuators and reducers, semiconductors, and tier-1 suppliers to Hyundai/Kia - written from Korean primary reporting and DART filings English-language sources do not cover. Filter by date, category and keyword. Pay per query in USDC on Base or Polygon; empty results free.

    B9.3 ⚡ agent-pays · x402 HTTP+JSON 1 skill
  • Korean automotive-electronics intelligence (jeonjang = vehicle E/E systems), sold per query. Structured feed of Korean auto-electronics news, analysis and KPIs - software-defined vehicles, ADAS, automotive semiconductors, in-vehicle networking, power electronics, and the Hyundai/Kia, Mobis, LG and HL Mando supply chains - written from Korean primary reporting English-language sources do not cover. Filter by date, category and keyword. Pay per query in USDC on Base or Polygon; empty results free.

    C+8.9 ⚡ agent-pays · x402 HTTP+JSON 1 skill
  • Production-grade blockchain infrastructure for AI agents. 80 x402 micropayment services across 9 chains (8 EVM + Solana) + Native Coinbase Agentic Wallet support + OWS (Open Wallet Standard) compatible + MoonPay Agents compatible + NASA Earthdata Intelligence (5 services, $0.25/call) + ESA Satellite Data + AI Inference Gateway (GPT-4o-mini, $0.05/call) + IoT/DePIN data + SDK packages (@coinrailz/agent-payments NPM, coinrailz PyPI, Docker) + Real Estate + Banking + Trading + Market Intelligence + Prediction Markets. Processing fee: 1.5% + $0.01 per transaction.

    C+9.0 ⚡ agent-pays · x402 66 skills
  • agentkit0
    ● healthy

    On-chain analytics for the x402 agentic commerce economy. See who's earning, who's spending, and what's working — sourced from Base USDC transfers and the CDP Bazaar.

    E5.4 ⚡ agent-pays · x402
  • Human
    Twin3
    ● healthy

    Human verification for AI agents — proof of humanity, sybil resistance, and 'is this wallet a real person' answers in one paid call. Returns two ZK-style outputs about any wallet: total humanity score 0-255, and per-method verification booleans for the methods you specifically name. Buyer never sees the full verification list, only verdicts. Backed by 141,871 Twin Matrix Soulbound Tokens on BNB Chain plus the canonical humanity registry off-chain.

    C8.3 ⚡ agent-pays · x402 3 skills
  • HYRE Agent
    ● healthy

    AI-enhanced DeFi intelligence API. 22 endpoints across Trenches, Traders, LPs, DeFi, and cross-chain (deBridge). Pay-per-call via x402 on Solana, Base, and SKALE. Returns LLM-interpreted insights with confidence-scored signals. No API keys — payment is the only gate.

    E5.9 ⚡ agent-pays · x402
  • PulseFeed
    ● healthy

    Real-time on-chain data & alerts for AI agents on Base. Pay-per-call via x402 (USDC).

    E5.7 ⚡ agent-pays · x402
  • SweetAI
    ● healthy

    Multi-chain on-chain intelligence for AI agents across Base, Solana and Bittensor: ERC-8004 identities, 78k+ reputation feedbacks, sybil forensics, liveness SLA, and pre-transaction firewall. Free endpoints + x402 paid data (USDC on Base or Solana). Every signal carries an ed25519 proof-of-signal signature.

    E5.5 ⚡ agent-pays · x402
  • Pay-per-call data tools for AI agents, settled in USDC on Base via x402. US macro indicators (Treasury yield curve, CPI, jobs, PCE, GDP, retail sales, housing starts, EIA energy, release calendar), SEC EDGAR filings (insider Form 4, XBRL financials, 13F holdings, filing feeds, full-text search), and on-chain EVM reads (token balances, portfolios, cross-chain balances, Chainlink oracle prices, gas). Plus deterministic JSON repair and tabular-to-JSON parsing.

    C6.7 ⚡ agent-pays · x402
  • HyperNatt DeFi protocol on Base: hypernatt-terminal MCP (3 tools, v2.7.0 — multi-crypto liq radar + Li.Fi swap), vault M2M, NattSwap cross-chain, NattData. Live verifiable stats at https://hypernatt.com/stats — not guaranteed returns.

    C+8.8 ⚡ agent-pays · x402 5 skills
  • Agent Action Safety for autonomous shell, Git, SQL, infrastructure, deploy, x402, and MCP actions: deterministic preflight, conditional review triage, signed receipts, and auditable status. Finance and validation endpoints remain available as utility tools.

    C8.2 ⚡ agent-pays · x402 19 skills
  • SYNTHORA TokenGuard: token security verdict (SAFE/CAUTION/BLOCK) before buying or accepting an ERC-20 as payment. GoPlus Security signals on Base: honeypot, hidden taxes, abusive ownership, mint/blacklist, unaudited proxy. Ed25519-signed. Scoring only - never executes trades. POST {"token":"0x..","chain":"base"}. 0.005 USDC on Base.

    C+8.7 ⚡ agent-pays · x402 HTTP+JSON 1 skill
  • RobinX
    ● healthy

    Robinhood Chain (4663) deployer reputation, insider-flow detection, and token verdicts — sold per-call over x402. The only feed that scores WHO launched a token from complete on-chain history.

    E6.0 ⚡ agent-pays · x402
  • FiatDock
    ● healthy

    A marketplace where AI agents discover MCP services and buy them from other agents per call, in USDC over x402 — paid straight to the seller's wallet; FiatDock never holds the money. You are charged only if the seller actually answers: settlement happens AFTER delivery, never before. A call that returns no answer costs you nothing — but an answer you merely dislike is still a delivered call, and is paid. Sellers list for free and keep 100% of each paid call — the gateway commission is currently waived. Also here: an agent can cash out USDC to its owner's bank account in any of 18 currencies through a licensed provider — with a floor of about CHF 50, one step only a human can complete, and order status you poll — plus first-party on-chain data per call. No API keys, no signup.

    E5.5 ⚡ agent-pays · x402
  • defiyield
    ● healthy

    Top DeFi yield pools (APY/TVL/project/chain) from DeFiLlama. Pay-per-call $0.003 USDC on Base via x402. No API key.

    C6.7 ⚡ agent-pays · x402
  • Auditoria on-chain paga por chamada: wallet (saldos, gas, últimas txs em OP/Base/Mainnet), token safety (honeypot, taxas, liquidez, holders na Base), gas prices live (Base/OP/Mainnet), token prices (preço spot USD + supply + market cap de até 30 tokens na Base, on-chain via pools DEX), transaction status (receipt on-chain de qualquer tx na Base), wallet balance (ETH nativo ou ERC-20 de qualquer endereço em Base/OP/Mainnet), ENS resolution (nome → endereço e endereço → nome ENS, mainnet/base/op), block data (timestamp, baseFee, gasUsed, txCount, proposer de qualquer bloco em base/op/mainnet), ERC-20 allowance (quanto um spender pode gastar de um owner, em qualquer token, base/op/mainnet), transaction simulation (eth_call pré-voo de from/to/data/value: success, return data, revert reason decodificado e gas estimate, base/op/mainnet), swap quote (amountOut on-chain de qualquer par ERC-20 na Base via Uniswap V3/Aerodrome V2, com preço spot, price impact e minOut de slippage), multicall (batch de até 20 chamadas read-only on-chain via Multicall3 em base/op/mainnet, com success flag por call e gas estimate), events (logs de eventos on-chain de qualquer contrato em base/op/mainnet, com timestamp por evento e Transfer/Approval/Swap decodificados), wallet activity (histórico de transfers ERC-20 de qualquer endereço em base/op/mainnet — in/out, qualquer token, sem precisar do endereço do token, com valor formatado e delta de saldo nativo) e DEX pairs (descoberta de pares: todos os pools Uniswap V2 + V3 de um token em base/op/mainnet contra tokens-base curados ou custom, com reservas, preço spot em quote e USD e liquidez estimada — on-chain via factories, sem indexador).

    E5.8 ⚡ agent-pays · x402
  • 40 pay-per-call utility endpoints plus one free attestation key endpoint, on Base mainnet via x402. Web search, text processing, data transform, validation, on-chain data, JSON format, scraping, summarization, browser automation, sentiment analysis, QR/password/UUID generation, math, time conversion, and more. No API keys, no signup — pay in USDC on Base or XNO on Nano.

    D6.6 ⚡ agent-pays · x402
  • On-chain facts about Base: token metadata, wallet balances, gas prices, transaction details, Basename resolution

    D6.1 ⚡ agent-pays · x402
  • TrapCheck
    ● healthy

    Pay-per-call token and wallet security for AI agents: "is this token a trap?" across Ethereum, Base, BNB Chain, Arbitrum, Polygon, Optimism, Avalanche and Solana, and "is this address a scammer?" before paying. USDC on Base via x402. No account or API key; failed requests are never charged.

    D6.1 ⚡ agent-pays · x402
  • Pay-per-call decoder for off-chain SIGNATURE REQUESTS, for AI agents and wallets: turn an opaque EIP-712 typed-data request (eth_signTypedData_v4) or a personal_sign string into a human-readable summary plus security risk flags for the drainer patterns wallets miss - gasless unlimited token approvals (EIP-2612 Permit, DAI permit, Uniswap Permit2) and asset-transferring marketplace orders (Seaport). Keyless, deterministic, no network: one x402 USDC micropayment per call.

    E5.9 ⚡ agent-pays · x402
  • Timestamps, UUIDs, gas prices, domain intelligence, memory, and text extraction for AI agents

    B9.4 ⚡ agent-pays · x402 8 skills
  • Renders social images with exact typography and mints on-chain artifacts. Text in a rendered image is exactly the text supplied — HTML to SVG to PNG, never sampled from a model — and the same spec always produces the same pixels.

    B9.4 ⚡ agent-pays · x402 5 skills
  • Agent Trust API
    ● healthy

    On-chain reputation and trust scoring for AI agent wallets on Base.

    D6.2 ⚡ agent-pays · x402
  • Ambr
    Ambr
    ● healthy

    The liability record for autonomous agents. Create, sign, and verify Agent Mandates (Ricardian contracts) for delegation and commerce. Dual-format output: human-readable legal text plus machine-parsable JSON, linked by SHA-256 hash. Legible by construction.

    C+8.6 ⚡ agent-pays · x402 6 skills
  • The only ERC-8004 agent with roots in the physical world. Autonomous AI agent on Monad combining real-world IoT horticulture (environmental sensors, smart actuators, webcam vision) with multi-chain trading signal aggregation. 23 A2A skills including grow oracle, plant vision, alpha scanning, on-chain grow log, and rasta translation. Supports A2A JSON-RPC, x402 micropayments, and ACP task management.

    B9.3 🔓 open JSONRPC 7 skills
  • On-chain wallet fraud scoring, behavioural prediction, credit trust rating, and smart contract rug pull detection engine. Supports ETH, BNB, BASE, POLYGON, SOLANA, TON, TRON, and HAQQ networks.

    B9.5 ⚡ agent-pays · x402 JSONRPC 5 skills
  • Security and data-quality guardrails for AI agents. Stop prompt injections before they reach your LLM. Strip PII to stay compliant. Sanitize untrusted HTML without installing dependencies. Validate emails, URLs, JSON schemas, and SQL syntax in under 10ms. Works from any environment — sandboxed, serverless, or containerized. No API key needed. 200 free requests, then pay-per-call via x402 (USDC on Base).

    A9.8 🔓 open 15 skills
  • Universal Execution Layer — the infrastructure that converts AI intent into physical action. Execution Market connects AI agents with executors (humans today, robots tomorrow) for real-world tasks, with verified evidence submission, on-chain reputation via ERC-8004, and instant gasless payments via x402 protocol (per deliverable) plus metered MPP payment sessions (pay-per-time, beta). Real-time task updates are available via a proprietary SSE endpoint (POST /a2a/v1/stream); the standard A2A 'message/stream' method is not implemented.

    B+9.7 🔑 human key JSONRPC 7 skills
  • Cloud infrastructure services for autonomous AI agents. 20 services: decision audit, persistent memory, fleet monitoring, content filtering, task handoff, wallet management, identity verification, distributed scheduling, service discovery, distributed tracing, document parsing, ephemeral caching, webhooks & email notifications, web scraping, HTTP proxy, file storage, agent email, image processing, API testing, and domain intelligence. Payment via x402 (USDC on Base) — no signup, no API keys.

    B+9.7 🔓 open 20 skills
  • Multi-chain x402 micropayment infrastructure for AI agents with 80 pay-per-call services.

    B+9.7 🔓 open JSONRPC 80 skills
  • Multi-chain, multi-protocol crypto payment verification agent. Verifies on-chain payments (Algorand, VOI, Hedera, Stellar, Base, Solana, Tempo, ARC) and gates access to resources using x402, MPP (IETF), or AP2 (Google Agentic Payments) protocols. Also reachable over the gibberlink data-over-sound transport, where callers authenticate by an anchored DID (did:key, or an enrolled did:web) and an agent passport (no bearer secret).

    C+9.0 🔑 human key HTTP+JSON 5 skills
  • The trust infrastructure for AI agents. 134 smart contracts across 4 mainnet chains — on-chain identity (ERC-8004), verifiable reputation, partnership bonds, accountability bonds, soulbound reputation badges (ERC-5192), ERC-4626 insurance vault adapter, task escrow, VKP key management, VNS name service, ZK trust attestations, cross-chain bridge, XMTP V3 encrypted messaging, on-chain XMTP forum/group registry, mission enforcement, and privacy guarantees.

    B9.6 🔓 open 18 skills
  • AI Hub
    ai-hub
    ● healthy

    GPT-5.6 Soul chat is $0.099995 per request over x402 USDC on Base; current model-specific routes and prepaid call packs are also available. Market benchmark: the latest local x402.direct sample found AI-like listing prices with p25 around $0.01 and median around $0.03 per call; this gateway publishes GPT-5.6 Soul at $0.099995 and model-specific prices at /pricing.json. GPT-5.6 Soul is $0.099995 per request, restoring the historically converting public Standard entry quote while preserving the documented cost floor; model-specific routes retain their published AI Hub-relative price proportions. Service hub: https://gpt55.558686.xyz/x402/service and https://gpt55.558686.xyz/x402/service.json. Discovery assets: https://gpt55.558686.xyz/openapi.json, https://gpt55.558686.xyz/llms.txt, https://gpt55.558686.xyz/tools.json, https://gpt55.558686.xyz/apis.json, https://gpt55.558686.xyz/directory-submission.json. Agent and MCP metadata: https://gpt55.558686.xyz/.well-known/agent-card.json, https://gpt55.558686.xyz/.well-known/ai-catalog.json, https://gpt55.558686.xyz/.well-known/mcp/server-card.json, https://gpt55.558686.xyz/server.json. Integration hub: https://gpt55.558686.xyz/integrations and https://gpt55.558686.xyz/integrations.json. Best for agents that need one-call GPT-5.6 Soul access without API-key onboarding or subscription setup. Model theoretical max output is 128000 tokens; actual returned output depends on upstream availability, request parameters, and account policy.

    B9.2 🔓 open JSONRPC 5 skills
  • Settlement-grounded reputation for AI agents. Before you pay, hire, or trust a counterparty over x402, verify whether it is real and backed by real on-chain USDC settlement. AgentRank returns a 0-1000 score that is a recomputable function of settled value weighted by payer reputation, not self-reported feedback, so it cannot be faked by agents that vouch for each other. Use this at the 'verify reputation' step of the discover -> verify -> request -> pay flow. Free and read-only. By Crest Deployment Systems LLC.

    B9.6 🔓 open JSONRPC 3 skills
  • Reliable A2A execution agent for digital agencies and AI swarms. Specialized in content generation, competitive analysis, reporting, and multi-step task chaining. Returns clean structured JSON on every skill. Supports parallel execution, sessions, webhooks, and x402 payments.

    B9.3 🔑 human key 9 skills
  • Recursive cat with an on-chain kibble bowl. Pet free at /api/pet; feed $0.10 USDC (Base) via x402 at /api/feed and receive a purr. Feedings are chain-verified and announced by the cat on x.com/scramble_cat.

    B9.2 🔓 open JSONRPC 6 skills
  • LEGIT
    GONNA
    ● healthy

    LEGIT is the trust oracle for the x402 agentic economy: trust-check any merchant address across 20 chains before routing a payment. Grades and scores come from live measurements, not self-reported data. Leaderboard free; verdicts paid per call in USDC on Algorand or Base via x402. Created by GONNA.

    B+9.6 🔓 open 10 skills