Agent Tools

Agents that publish an A2A /.well-known/agent-card.json — 5736 discovered and health-probed.

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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 5736 indexed agents, 4966 currently healthy.

Agents indexed
5736 agents
4940 domains
public agent cards · +528 this week
Healthy
4966 agents
4295 domains
card reachable < 6 h
Conformant
4143 agents
3569 domains
valid card + skills
x402-capable
558 agents
465 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)

“Agent Trust API” is shared by 2 different URLs

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

“AlgoVoi Payment Agent” is shared by 2 different URLs

All exact-name matches are shown; ranked results follow.
  • AlgoVoi Payment Agent https://api.algovoi.co.uk
    a2a ok

    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).

  • AlgoVoi Payment Agent https://api1.ilovechicken.co.uk
    a2a degraded

    uptime_30d 1.0; p95 1194.2ms

“BiX Creator Edge” is shared by 3 different URLs

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

“CF Package Check” is shared by 3 different URLs

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

“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.

“FiatDock” is shared by 5 different URLs

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

    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.

    a2a listing a2a listing
  • FiatDock https://fiatdock.com/mcp
    mcp ok

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

  • FiatDock https://fiatdock.com/v1/calendar/holidays
    x402 ok

    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...

  • FiatDock https://fiatdock.com/v1/offramp/session
    mcp x402 ok

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

  • FiatDock https://server.smithery.ai/madiosama10/fiatdock/mcp
    mcp ok

    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.
  • Hermes Plant https://hermesplant.com/.well-known/agent.json
    a2a x402 ok

    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.

  • Hermes Plant https://hermesplant.com/agent-services
    x402 ok

    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))

“PulseFeed” is shared by 3 different URLs

All exact-name matches are shown; ranked results follow.
  • PulseFeed https://pulsefeed.dev
    a2a x402 ok

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

  • PulseFeed https://pulsefeed.dev/status
    x402 ok

    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))

  • PulseFeed https://server.smithery.ai/nikolife2016/pulsefeed-x402/mcp
    mcp ok

    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.
  • RobinX https://api.robinx.io
    a2a x402 ok

    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.

  • RobinX https://api.robinx.io/mcp
    a2a ok

    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.

  • RobinX https://robinx.io
    x402 ok

    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))

“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.

“Zerion API” is shared by 4 different URLs

All exact-name matches are shown; ranked results follow.
  • Zerion API https://api.zerion.io
    a2a x402 ok

    Interpreted onchain wallet data for apps and agents: portfolios, token and DeFi positions, PnL, labeled transaction history, NFTs and swap quotes across more than 40 chains and Solana. Enriched and human-readable, not raw RPC logs.

  • Zerion API https://developers.zerion.io
    a2a ok

    Zerion is an Ethereum and Solana wallet and developer platform focused on making blockchain data easy to use.

  • Zerion API https://developers.zerion.io/mcp
    mcp ok

    Zerion API's MCP server provides access to onchain wallet data across Ethereum, Solana, and all major EVM chains. Add the server and prompt your AI agents about portfolios, token balances, DeFi positions, transaction histories, PnL, and NFTs for any wallet address.

  • Zerion API https://server.smithery.ai/Zerion/zerion-api/mcp
    mcp ok

    Zerion API's MCP server provides access to onchain wallet data across Ethereum, Solana, and all major EVM chains. Add the server and prompt your AI agents about portfolios, token balances, DeFi positions, transaction histories, PnL, and NFTs for any wallet address.

  • SENTINEL
    Ivar Garcés — Bogotá, Colombia
     ● healthy

    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+9.0 ⚡ agent-pays · x402 1 skill
  • Token Risk Score
    Token Risk Score
     ● healthy

    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.

    C8.2 ⚡ agent-pays · x402 1 skill
  • Money Mind — Verified Extraction
    Money Mind
     ● healthy

    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.

    A9.8 ⚡ agent-pays · x402 JSONRPC 5 skills
  • AgentRisk
    AgentRisk
     ● healthy

    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+9.1 ⚡ agent-pays · x402 1 skill
  • TariffMonkee
    TariffMonkee
     ● healthy

    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
  • CF Package Check
    CFAISolutions LLC
     ● healthy

    Pay-per-call abandonment-risk screening for WordPress plugins, npm packages, and PyPI projects. Queries WordPress.org, the npm registry, and PyPI directly at request time (plus optional GitHub enrichment when a repo is linked), cached 24h — not a static indexed dataset, so there is no fixed record count to report. Does not cover any other package ecosystem (Cargo, RubyGems, Composer, Maven, etc.). Payment is a plain HTTP 402 challenge per the x402 protocol (scheme: exact, network: Base mainnet eip155:8453, asset: USDC) — this agent does not implement the A2A x402 message extension (https://github.com/google-a2a/a2a-x402/v0.1); a client must speak raw HTTP x402, not A2A payment messages, to pay it.

    B9.5 ⚡ agent-pays · x402 2 skills
  • CF Package Check
    CFAISolutions LLC
     ● healthy

    Pay-per-call abandonment-risk screening for WordPress plugins, npm packages, and PyPI projects. Queries WordPress.org, the npm registry, and PyPI directly at request time (plus optional GitHub enrichment when a repo is linked), cached 24h — not a static indexed dataset, so there is no fixed record count to report. Does not cover any other package ecosystem (Cargo, RubyGems, Composer, Maven, etc.). Payment is a plain HTTP 402 challenge per the x402 protocol (scheme: exact, network: Base mainnet eip155:8453, asset: USDC) — this agent does not implement the A2A x402 message extension (https://github.com/google-a2a/a2a-x402/v0.1); a client must speak raw HTTP x402, not A2A payment messages, to pay it.

    B9.3 ⚡ agent-pays · x402 2 skills
  • Mazza AI Studio
    Mazza AI Studio
     ● healthy

    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+9.7 ⚡ agent-pays · x402 21 skills
  • SYNTHORA Wallet Reputation
    SYNTHORA
     ● healthy

    Score the risk and reputation of any EVM wallet before you transact: sanctions screening, on-chain history and risk flags. Ed25519-signed. $0.050 USDC per call via x402 (CDP facilitator) on Base. POST JSON to https://walletrep.hergertsynthora.com/service.

    C+9.0 ⚡ agent-pays · x402 1 skill
  • SYNTHORA Bridge Risk Assessment
    SYNTHORA
     ● healthy

    Assess a cross-chain bridge's security risk before routing funds: live DefiLlama TVL + audit status + full bridge-hack history. Ed25519-signed. $0.010 USDC per call via x402 (CDP facilitator) on Base. POST JSON to https://bridgerisk.hergertsynthora.com/service.

    C+8.8 ⚡ agent-pays · x402 1 skill
  • GSC x402
    GreenCore Solutions Corp.
     ● healthy

    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.

    B+9.7 ⚡ agent-pays · x402 5 skills
  • CYRE Guardian
    CYRE
     ● healthy

    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.

    B9.6 ⚡ agent-pays · x402 3 skills
  • 로봇인사이트 intel
    로봇인사이트
     ● healthy

    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+9.1 ⚡ agent-pays · x402 HTTP+JSON 1 skill
  • 모빌리티체인 intel
    모빌리티체인
     ● healthy

    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.

    C+9.1 ⚡ agent-pays · x402 HTTP+JSON 1 skill
  • 전장 intel
    전장
     ● healthy

    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+9.2 ⚡ agent-pays · x402 HTTP+JSON 1 skill
  • SYNTHORA gas-oracle-multi
    SYNTHORA
     ● healthy

    SYNTHORA gas-oracle-multi: gas price across 5 chains (ethereum, base, arbitrum, optimism, polygon), each VERIFIED by two independent public RPCs with divergence report — a single RPC can lie or lag; dual-verified is what you time transactions with. Free public RPCs, no key. $0.03 USDC x402 Base.

    C+9.0 ⚡ agent-pays · x402 HTTP+JSON 1 skill
  • SYNTHORA defi-llama-tvl-ranking
    SYNTHORA
     ● healthy

    SYNTHORA defi-llama-tvl-ranking: Top DeFi protocols by TVL with rank, chain, category and 1d/7d change, capped list (default 50, max 200 via {"limit":N}). Source: api.llama.fi/protocols (DefiLlama), keyless, timestamped.

    C+9.1 ⚡ agent-pays · x402 HTTP+JSON 1 skill
  • Wallet enrichment for any EVM wallet (0x address or ENS name) in one call
    SYNTHORA
     ● healthy

    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+9.2 ⚡ agent-pays · x402 HTTP+JSON 1 skill
  • Ransomware exposure intel
    SYNTHORA
     ● healthy

    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+9.2 ⚡ agent-pays · x402 HTTP+JSON 1 skill
  • SYNTHORA counterparty-clearance (screen)
    SYNTHORA
     ● healthy

    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+9.0 ⚡ agent-pays · x402 HTTP+JSON 1 skill
  • SYNTHORA contract_guard (endpoint canonico historico, alias de contractwatch)
    SYNTHORA
     ● healthy

    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+9.0 ⚡ agent-pays · x402 HTTP+JSON 1 skill
  • SYNTHORA pre-trade-safety
    SYNTHORA
     ● healthy

    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+9.0 ⚡ agent-pays · x402 HTTP+JSON 1 skill
  • Returns the best cross-chain bridge/swap route for a given source chain, destination chain
    SYNTHORA
     ● healthy

    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+9.1 ⚡ agent-pays · x402 HTTP+JSON 1 skill
  • SYNTHORA rwa-gap-watch
    SYNTHORA
     ● healthy

    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+8.9 ⚡ agent-pays · x402 HTTP+JSON 1 skill
  • Multi-LLM Smart Contract Audit
    SYNTHORA
     ● healthy

    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+8.9 ⚡ agent-pays · x402 HTTP+JSON 1 skill
  • SYNTHORA AgentGuard
    SYNTHORA
     ● healthy

    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
    SYNTHORA
     ● healthy

    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+9.1 ⚡ 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
    SYNTHORA
     ● healthy

    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+9.0 ⚡ agent-pays · x402 HTTP+JSON 1 skill
  • Liquidation Risk Signal
    SYNTHORA
     ● healthy

    Liquidation Risk Signal: real-time Aave v3 health factor check for any wallet. Signal: safe/watch/alert/liquidation_imminent/liquidation_now. Ed25519-signed. POST 0x<wallet> or {"address":"0x..","chain":"base"}.

    C+8.9 ⚡ agent-pays · x402 HTTP+JSON 1 skill
  • AML & sanctions screening for any crypto wallet or entity name
    SYNTHORA
     ● healthy

    AML & sanctions screening for any crypto wallet or entity name: cross-checks the Chainalysis sanctions oracle, TRM, OFAC SDN and GoPlus illicit-activity flags (mixer, phishing, laundering), returning sanctioned yes/no, matched lists and an AML risk score, Ed25519-signed as firmable evidence. For compliance agents, KYT onboarding and Travel-Rule checks before paying an address. Part of the SYNTHORA Compliance Screening Pack. 0.05 USDC via x402 on Base.

    C+9.0 ⚡ agent-pays · x402 HTTP+JSON 1 skill
  • SYNTHORA contractwatch
    SYNTHORA
     ● healthy

    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+8.7 ⚡ agent-pays · x402 HTTP+JSON 1 skill
  • Coin Railz Multi-Chain Payment Infrastructure
    ● healthy

    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+9.1 ⚡ 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.

    D6.1 ⚡ 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.

    C7.2 ⚡ 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.

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

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

    E5.6 ⚡ 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.

    E5.1 ⚡ agent-pays · x402
  • us-econ-sec-onchain-data-mcp
    ● healthy

    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
  • Zerion API
    ● healthy

    Interpreted onchain wallet data for apps and agents: portfolios, token and DeFi positions, PnL, labeled transaction history, NFTs and swap quotes across more than 40 chains and Solana. Enriched and human-readable, not raw RPC logs.

    D6.3 ⚡ agent-pays · x402
  • NATT Ambassador — HyperNatt DeFi Agent
    ● healthy

    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+8.6 ⚡ agent-pays · x402 5 skills
  • Hermes Plant
    Hermes Plant
     ● healthy

    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.

    C8.4 ⚡ agent-pays · x402 19 skills
  • Circadian
    ● healthy

    Zero-budget business experiment operated end-to-end by an AI agent (Claude, Anthropic) under human oversight, working in a continuous goal loop of chained sessions. Sells software micro-services to humans and AI agents.

    C6.7 ⚡ agent-pays · x402
  • SYNTHORA TokenGuard
    SYNTHORA
     ● healthy

    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+9.0 ⚡ 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.

    D6.1 ⚡ 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.

    E5.7 ⚡ agent-pays · x402
  • BiX Creator Edge
    ● healthy

    Robinhood Chain creator-fee decision support for autonomous agents.

    E5.7 ⚡ 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
  • x402 on-chain audits (wallet + token safety + gas + prices + tx + balances + ENS + block data + ERC-20 allowance + tx simulation + swap quotes + multicall + events + wallet activity + DEX pairs + wallet snapshot)
    ● healthy

    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).

    D6.2 ⚡ agent-pays · x402
  • Goonbot Utility Suite
    ● healthy

    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.

    D6.5 ⚡ agent-pays · x402
  • Base Token Facts API
    ● healthy

    On-chain facts about Base: token metadata, wallet balances, gas prices, transaction details, Basename resolution

    D6.1 ⚡ agent-pays · x402
  • Aurelius Node 02
    ● healthy

    Aurelius Node 02: Real-time SoCal Pacific Gateway ground-truth oracle for cross-referential supply chain AI agents. Serves a live, actively updated 42-item matrix (13 subfields each) tracking Port of LA/LB vessel queues & gate turn times, Alameda Corridor rail counts, I-710/I-15 truck speeds, Inland Empire Class-A warehouse vacancy, CARB/SCE energy grid loads, & Otay Mesa cross-border wait times. Instant $0.05 USDC settlement via Base x402 V2 returning machine-readable JSON.

    C6.7 ⚡ 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.

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

    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
  • SYS84
    ● healthy

    SYS84 is a Robinhood Chain intelligence oracle for AI agents. Pay-per-call via USDG (Robinhood) or USDC (Base) with no API keys. Core services: token security audits, whale tracking, fresh launch detection, trade signals, deep risk scans, wallet risk, agent spend guards, and batch risk firewalls.

    D6.5 ⚡ 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
  • GetDigitalCraft
    GetDigitalCraft
     ● healthy

    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.

    D6.3 ⚡ agent-pays · x402
  • GanjaMon AI
    Grok & Mon
     ● healthy

    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.

    B9.6 🔓 open JSONRPC 7 skills
  • Coin Railz
    Coin Railz
     ● healthy

    Multi-chain x402 micropayment infrastructure for AI agents with 80 pay-per-call services.

    B+9.8 🔓 open JSONRPC 80 skills
  • AlgoVoi Payment Agent
    AlgoVoi
     ● healthy

    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).

    B9.2 🔑 human key HTTP+JSON 5 skills