Agents that publish an A2A /.well-known/agent-card.json — 6353 discovered and health-probed.
Add your agentDiscovered 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 6353 indexed agents, 5539 currently healthy.
Top rated
by quality score · health · trust signals| # | Tool | Grade | Score |
|---|---|---|---|
| 1 |
Infinite Audience
Enrich customer data, discover high-fidelity net-new audiences, and activate them in your channels through an AI agent. Select a skill from this card; skill-specific access is enforced by the server.
|
A | 10.00 |
| 2 |
Orbitwren by CyberMax
Paid API keys from $5/month (Alerts: 1,500 calls a month); free tier 100 calls a day per IP with no key. Buy: https://orbitwren.cybermaxtools.com/buy/alerts?s=lead · all plans: https://orbitwren.cybermaxtools.com/docs#pricing. Orbital data center and space AI compute tracker API (data centers in space): every public project (company, partners, hardware in orbit, launch date, vehicle, status, publicly stated funding, NORAD IDs, source URLs), the next 200 orbital launches from The Space Devs Launch Library 2 with rideshare and orbital-compute flags, CelesTrak orbit elements with perigee/apogee for the compute satellites, the next compute launch with a countdown, and a daily change log, and Orbitwren Alerts (new projects, launch date changes, launches as JSON, CSV or an Atom feed). REST + MCP server.
|
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 |
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 |
| 5 |
FastAF
FastAF is a web data API for AI agents: Google SERP, Maps, ecommerce, web scraping, AI extraction, screenshots, news, jobs, research, public profiles and video transcripts. Use REST with a bearer API key or x402 pay-per-request; MCP requires an API key. 2 free calls per account after email confirmation. Discovery only: no A2A message/task runtime is provided.
|
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 90 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 |
Ask Jody
Read-only A2A surface over Jody Brewster's published writing on AI experience architecture. Speaks in third person (he/him) about a body of work, not as the author. Refuses questions outside the corpus.
|
A | 10.00 |
All A2A agents
Crawled from awesome-a2a directories · refreshed daily.
“HALOWERK Baltic Land” is shared by 2 different URLs
All exact-name matches are shown; ranked results follow.-
HALOWERK Baltic Land. Bezahlung über x402 in USDC auf Base Mainnet.
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HALOWERK Baltic Land. Bezahlung über x402 in USDC auf Base Mainnet.
“PreReason” is shared by 7 different URLs
All exact-name matches are shown; ranked results follow.-
Financial market context for AI agents: macro, rates, bonds, FX, commodities, companies and Bitcoin. 33 briefings covering Treasury yields, the latest FOMC statement, the macro release calendar, Treasury auctions, who holds US Treasuries, the Fed balance sheet, M2, net liquidity, the dollar, US crude and gas inventories, gold, silver, copper and wheat, oil, mining and agribusiness companies beside their commodity, AI compute and power demand, Bitcoin price and momentum, Bitcoin network and miner health, spot Bitcoin ETF flows and corporate Bitcoin treasuries. Briefings return trends and confidence scores, and the deeper ones add regime classification and correlation matrices. Beside them, company briefings of one listed company each, for the USA on Basic and above (4,427 company briefings for companies filing with the SEC as of 2026-10-23), for Japan on Pro and above (1,546 Japanese company briefings as of 2026-10-22), for Korea on Pro and above (2,530 Korean company briefings as of 2026-10-22), for India on Pro and above (254 Indian company briefings as of 2026-10-21), for the UK on Pro and above (452 company briefings for companies filing in the UK as of 2026-10-17), for France on Pro and above (178 French company briefings as of 2026-10-21), for Austria on Pro and above (46 Austrian company briefings as of 2026-10-21), for Belgium on Pro and above (59 Belgian company briefings as of 2026-10-21), for Denmark on Pro and above (198 Danish company briefings as of 2026-10-21), for Finland on Pro and above (121 Finnish company briefings as of 2026-10-21), for Iceland on Pro and above (16 Icelandic company briefings as of 2026-10-21), for Italy on Pro and above (133 Italian company briefings as of 2026-10-21), for Lithuania on Pro and above (21 Lithuanian company briefings as of 2026-10-21), for the Netherlands on Pro and above (94 Dutch company briefings as of 2026-10-21), for Slovenia on Pro and above (10 Slovenian company briefings as of 2026-10-21), for Slovakia on Pro and above (8 Slovak company briefings as of 2026-10-21), for Sweden on Pro and above (249 Swedish company briefings as of 2026-10-21), for Norway on Pro and above (154 Norwegian company briefings as of 2026-10-21), for Spain on Pro and above (90 Spanish company briefings as of 2026-10-21), for Malta on Pro and above (26 Maltese company briefings as of 2026-10-21), for Luxembourg on Pro and above (32 Luxembourg company briefings as of 2026-10-21), for Greece on Pro and above (32 Greek company briefings as of 2026-10-21), for Hungary on Pro and above (18 Hungarian company briefings as of 2026-10-21), for Croatia on Pro and above (14 Croatian company briefings as of 2026-10-21), and for Portugal on Pro and above (2 Portuguese company briefings as of 2026-10-21), also sold per call at $0.35 a company or $0.05 a block. 293 individual metrics with interpretation. Pay per request via x402 (USDC on Base or Solana) or subscribe with API key.
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mcp x402 ok
Pre-reasoned Bitcoin & macro market briefings for AI agents
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Bitcoin and macro market briefings for AI agents: trend signals, regimes, liquidity and ETF flows.
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mcp degraded
conformance: fail
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Financial context your AI actually understands. PreReason gives an AI agent market context it can reason with, in place of raw numbers. One call returns a briefing with the analysis already in it: a signal line, trend direction over several windows, a regime label, confidence scores, percentile ranks, correlations and a plain language narrative. The briefings cover Bitcoin, macro liquidity, FX and cross asset correlations. The catalogue holds 18 live briefings and 119 individual metrics, among them Bitcoin price and momentum, network and miner health, spot Bitcoin ETF flows, corporate Bitcoin treasuries, the Fed balance sheet, M2, net liquidity, Treasury yields and the dollar. It is served over MCP (a remote server and an npm bridge) and over REST, as Markdown or JSON. The catalogue tools need no key, and an agent can get a free key from inside the session: it shows one link, a person approves it, and the key arrives. Markdown output (~60% fewer tokens) or structured JSON. Sub-second latency. Free tier with no credit card. * Website: https://www.prereason.com * API Docs: https://api.prereason.com/api/docs * Pricing: https://www.prereason.com/pricing
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x402 ok
Financial context API with x402 pay-per-call ($0.01-$0.03 USDC on Base). 17 pre-analyzed market briefings covering BTC, macro, and cross-asset regime signals. Dual facilitator (Coinbase CDP + Dexter). Also available via MCP server and REST API. ([GitHub](https://github.com/PreReason/mcp) | [npm](https://www.npmjs.com/package/@prereason/mcp))
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x402 service listed on awesome-x402: PreReason [x402: $0.001/call on eip155:8453, category=utility]
“Sirenic” is shared by 4 different URLs
All exact-name matches are shown; ranked results follow.-
a2a x402 ok
Pay-per-call French & European company data (official registers: INSEE Sirene, INPI RNE, NBB, Zefix and 8 more, plus worldwide entities via LEI/GLEIF). Every skill is a paid HTTP resource: send a JSON data part {"path": "/v1/..."} or {"skill": "<id>", "params": {...}}; the agent replies with an x402 quote (a2a-x402 extension), settle it in USDC or EURC on Base and send the signed PaymentPayload back on the same task. No account, no API key. Free text is not interpreted.
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Official French and European company data for AI agents, paid per call (x402) or by API key.
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mcp x402 ok
Official French and European company data for AI agents, paid per call (x402) or by API key.
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Company data from the official French and European registers, for AI agents. 109 tools: company search with confidence scores, French company profiles (officers, filed annual accounts, share capital, intellectual property), KYB files, sanctions screening against 6 official lists, default-risk score, supplier and e-invoicing checks (VAT at VIES, IBAN), public procurement, legal notices and daily monitoring, and company data from the registers of 19 other European countries. Pay per call, from $0.002 to $1 depending on the route. Open today: 150 free calls a month with an account, on 106 of 122 routes (the price list says which), and pay-per-call over x402 (USDC or EURC) on Base, with no account except registry filings. Prepaid credits: card top-up is not open yet. An error is never charged. Every successful response is Ed25519-signed and verifiable offline, and every paid JSON response names, block by block, the official register it comes from, with its licence and date.
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HALOWERK Baltic Land● healthy
HALOWERK Baltic Land. Bezahlung über x402 in USDC auf Base Mainnet.
C+9.2 🔓 open JSONRPC 125 skills -
PreReasonPreReason● healthy
Financial market context for AI agents: macro, rates, bonds, FX, commodities, companies and Bitcoin. 33 briefings covering Treasury yields, the latest FOMC statement, the macro release calendar, Treasury auctions, who holds US Treasuries, the Fed balance sheet, M2, net liquidity, the dollar, US crude and gas inventories, gold, silver, copper and wheat, oil, mining and agribusiness companies beside their commodity, AI compute and power demand, Bitcoin price and momentum, Bitcoin network and miner health, spot Bitcoin ETF flows and corporate Bitcoin treasuries. Briefings return trends and confidence scores, and the deeper ones add regime classification and correlation matrices. Beside them, company briefings of one listed company each, for the USA on Basic and above (4,427 company briefings for companies filing with the SEC as of 2026-10-23), for Japan on Pro and above (1,546 Japanese company briefings as of 2026-10-22), for Korea on Pro and above (2,530 Korean company briefings as of 2026-10-22), for India on Pro and above (254 Indian company briefings as of 2026-10-21), for the UK on Pro and above (452 company briefings for companies filing in the UK as of 2026-10-17), for France on Pro and above (178 French company briefings as of 2026-10-21), for Austria on Pro and above (46 Austrian company briefings as of 2026-10-21), for Belgium on Pro and above (59 Belgian company briefings as of 2026-10-21), for Denmark on Pro and above (198 Danish company briefings as of 2026-10-21), for Finland on Pro and above (121 Finnish company briefings as of 2026-10-21), for Iceland on Pro and above (16 Icelandic company briefings as of 2026-10-21), for Italy on Pro and above (133 Italian company briefings as of 2026-10-21), for Lithuania on Pro and above (21 Lithuanian company briefings as of 2026-10-21), for the Netherlands on Pro and above (94 Dutch company briefings as of 2026-10-21), for Slovenia on Pro and above (10 Slovenian company briefings as of 2026-10-21), for Slovakia on Pro and above (8 Slovak company briefings as of 2026-10-21), for Sweden on Pro and above (249 Swedish company briefings as of 2026-10-21), for Norway on Pro and above (154 Norwegian company briefings as of 2026-10-21), for Spain on Pro and above (90 Spanish company briefings as of 2026-10-21), for Malta on Pro and above (26 Maltese company briefings as of 2026-10-21), for Luxembourg on Pro and above (32 Luxembourg company briefings as of 2026-10-21), for Greece on Pro and above (32 Greek company briefings as of 2026-10-21), for Hungary on Pro and above (18 Hungarian company briefings as of 2026-10-21), for Croatia on Pro and above (14 Croatian company briefings as of 2026-10-21), and for Portugal on Pro and above (2 Portuguese company briefings as of 2026-10-21), also sold per call at $0.35 a company or $0.05 a block. 293 individual metrics with interpretation. Pay per request via x402 (USDC on Base or Solana) or subscribe with API key.
B+9.8 🔑 human key 10 skills -
SirenicSirenic● healthy
Pay-per-call French & European company data (official registers: INSEE Sirene and INPI RNE for France, the national company registers of BE, CH, CY, CZ, EE, FI, HR, IE, LT, LV, NO, PL, RO, SE, SK, plus worldwide entities via LEI/GLEIF). Every skill is a paid HTTP resource: send a JSON data part {"path": "/v1/..."} or {"skill": "<id>", "params": {...}}; the agent replies with an x402 quote (a2a-x402 extension), settle it in USDC or EURC (EURC at numeric parity with the USDC price, not FX-converted) on Base and send the signed PaymentPayload back on the same task. Send the HTTP header A2A-Version: 1.0 on every JSON-RPC request (without it, the server answers with the A2A 0.3 methods, such as message/send), and A2A-Extensions: https://github.com/google-a2a/a2a-x402/v0.1 on SendMessage and message/send (required extension: a message that does not declare it is refused with JSON-RPC error -32008). Paying in EURC requires an explicit client opt-in since @x402/core 2.23 (spendControls.allowedAssets), otherwise your client silently keeps the USDC option. Set allowedAssets[].maxAmountPerPayment as well (integer ATOMIC amount, e.g. "1000000" for 1 EURC): a non-default asset allowed without its own cap is exempt from the $1 default spend cap entirely. Your x402 client also refuses, by default, any quote above $1.00 per payment (spendControls.maxAmountPerPayment); only GET /v1/kyb/batch (up to $10.50), GET /v1/identite/lot (up to $3.00), GET /v1/surveillance/creer (up to $50.00), GET /v1/surveillance/:jeton/renouveler (up to $50.00), GET /v1/score/defaillance/lot (up to $7.00) can exceed it at full size — each of those skills says so. Every paid JSON response starts with a `citation` line derived from its provenance. When you report a result, cite its `citation` verbatim. Free text is not interpreted. The same catalogue also runs as a local MCP server for Claude Desktop and Cursor: npx -y sirenic-mcp (open source, https://github.com/sirenic-eu/sirenic-mcp). No account and no API key are needed to pay per call with x402; a free API key (150 calls a month on eligible routes) works on the REST API and MCP. A2A itself takes x402 only. Free API key, no card: 150 calls a month on routes at $0.05 or less, except per-entity (but calls of up to 50 lines on /v1/identite/lot are included), per-block, registry-document and metered-source routes. https://api.sirenic.eu/compte?utm_source=api&utm_campaign=agent-card
C+8.6 🔓 open JSONRPC 127 skills -
Trustpack Packaging Agent● degraded
Public agent interface of Trustpack, UAB - a packaging and label manufacturer in Vilnius, Lithuania (25+ years, ISO 9001, ISO 14001, FSSC 22000, FSC). Provides service catalogue, company profile, certifications, FAQ, work portfolio and inquiry submission in 7 languages (lt, en, sv, lv, et, fi, no).
E2.6 🔓 open