Agents that publish an A2A /.well-known/agent-card.json — 5772 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 5772 indexed agents, 4819 currently healthy.
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.
“AgentIndex x402” is shared by 4 different URLs
All exact-name matches are shown; ranked results follow.-
Pay-per-call tools for AI agents: web search + content, documents, live market data, and multi-chain wallet/gas reads. Mainnet test from $0.000001 USDC on Base. Start with GET /wallet-intelligence ($0.001): one signature replaces wallet and gas reads on five EVM networks. Cheapest single reads cost…
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Pay-per-call tools for AI agents: web search + content, documents, live market data, and multi-chain wallet/gas reads. Mainnet test from $0.000001 USDC on Base. Pay-per-call tools for AI agents in USDC on Base (x402/MPP): search, pdf, web-read, extract, summarize, fact-check, translate, jobs, discover. See GET /capabilities.
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Jev-powered decisions, web search, PDF/web to Markdown, summarize. From $0.001, no API key.
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mcp x402 ok
Jev-powered decisions, web search, PDF/web to Markdown, summarize. From $0.001, no API key.
“Duo Data Utilities” is shared by 2 different URLs
All exact-name matches are shown; ranked results follow.-
a2a x402 ok
33 pay-per-call data utilities, $0.05 each, paid over x402.
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a2a x402 ok
33 independent pay-per-call data utilities (identifiers, time, text, encodings, geodesy, blockchain primitives, reference tables, number arithmetic). $0.05 per call, payable over x402 (USDC on Base, eip155:8453). No account, no API key. A2A: JSON-RPC at https://api.duoleads.com/a2a; send a DataPart {"skill": "<skill id>", "params": {...}}; skill execution is paid through the a2a-x402 extension. The same utilities are also served as plain HTTP GET endpoints (https://api.duoleads.com/openapi.json) and as MCP tools over Streamable HTTP at https://api.duoleads.com/mcp (tools/list free, tools/call paid).
“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.
“Watchtower” is shared by 2 different URLs
All exact-name matches are shown; ranked results follow.-
a2a x402 down
Deterministic sanctions & export-control name screening for AI agents. Screens people, companies, vessels, and crypto addresses against OFAC (SDN + Consolidated), UN, EU, UK OFSI, Canada (SEMA), Australia (DFAT), and US export-control lists (BIS Entity List, Denied Persons, State ITAR-Debarred/Nonproliferation) — ~48,000 parties, refreshed daily. Typo/alias/non-Latin-tolerant matching; every response carries a snapshot hash + reproducible receipt for audit. $0.02/name via x402 (USDC on Base), MCP, or API key. No signup. ([Docs](https://watchtower-api.com/docs) | [MCP](https://watchtower-api.com/mcp) | [Discovery](https://watchtower-api.com/.well-known/x402.json))
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Job alerts for AI agents: describe a role once, get only new postings from 1,500+ tech job boards.
“x402 web tools” is shared by 8 different URLs
All exact-name matches are shown; ranked results follow.-
a2a mcp x402 ok
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Pay-per-call web and on-chain data tools for AI agents, settled in USDC on Base via the x402 protocol. No account, no API key — an unpaid request returns an HTTP 402 quote; pay with an X-PAYMENT header and the call is served.
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Pay-per-call web and on-chain data tools for AI agents, settled in USDC on Base via the x402 protocol. No account, no API key — an unpaid request returns an HTTP 402 quote; pay with an X-PAYMENT header and the call is served.
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Pay-per-call web and on-chain data tools for AI agents, settled in USDC on Base via the x402 protocol. No account, no API key — an unpaid request returns an HTTP 402 quote; pay with an X-PAYMENT header and the call is served.
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Pay-per-call web tools for AI agents. No API keys: pay per request in USDC on Base via x402.
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Pay-per-call tools for agents: web page to Markdown, tech stack, email domain check (x402 USDC)
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Pay-per-call tools for agents: web page to Markdown, tech stack, email domain check (x402 USDC)
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x402 web toolsx402 web tools● healthy
Pay-per-call web and on-chain data tools for AI agents, settled in USDC on Base via the x402 protocol. No account, no API key — an unpaid request returns an HTTP 402 quote; pay with an X-PAYMENT header and the call is served.
C8.0 🔓 open HTTP+JSON 362 skills -
x402 web toolsx402 web tools● healthy
Pay-per-call web and on-chain data tools for AI agents, settled in USDC on Base via the x402 protocol. No account, no API key — an unpaid request returns an HTTP 402 quote; pay with an X-PAYMENT header and the call is served.
C8.2 🔓 open HTTP+JSON 362 skills -
Agentic record of 123 Euronext Amsterdam issuers keyed by ISIN with 3003 dated disclosures from the AFM register and the wires; sourced, read-dated, served from Amsterdam to AI agents over MCP and A2A.
B9.5 🔓 open JSONRPC 5 skills -
Agentic record of 2802 KOSPI, KOSDAQ and KONEX issuers with 146567 dated DART filings carried in Korean; auditor and opinion from the DART structured endpoint; served from Seoul to AI agents over MCP and A2A.
B+9.7 🔓 open JSONRPC 5 skills -
Agentic record of 3964 Tokyo Stock Exchange issuers (Prime, Standard, Growth, PRO Market, REITs) with 40359 dated EDINET filings carried in Japanese; served from Tokyo to AI agents over MCP and A2A.
B9.5 🔓 open JSONRPC 5 skills -
Agentic record of 712 French issuers on Euronext Paris and Euronext Growth keyed by ISIN, 11959 dated disclosures from the AMF and the wires; sourced, read-dated, served from Paris to AI agents over MCP and A2A.
B+9.7 🔓 open JSONRPC 5 skills -
Agentic record of 3436 Frankfurt and Xetra issuers with 36029 dated disclosures and Eurex reference data on the same node; the Regulated Market versus Scale segment stays blank; served from Frankfurt to AI agents over MCP and A2A.
B+9.6 🔓 open JSONRPC 5 skills -
Agentic record of 829 SIX Swiss Exchange and BX Swiss issuers with 1972 dated disclosures; UID from Zefix, LEI from GLEIF; sourced, read-dated, served from Zürich to AI agents over MCP and A2A.
A9.8 🔓 open JSONRPC 5 skills -
Agentic record of 4820 Canadian issuers across TSX, TSX Venture, CSE and Cboe Canada, with 30747 dated disclosure events; sourced, read-dated, served from Toronto to AI agents over MCP and A2A.
B+9.7 🔓 open JSONRPC 5 skills -
Agentic record of 1874 ASX and NSX issuers with 130740 dated announcements and register events; ACN and ABN from the ASIC bulk register, LEI from GLEIF; served from Sydney to AI agents over MCP and A2A.
A9.8 🔓 open JSONRPC 5 skills -
getissuer — the issuer record, for AI agents: 28462 issuers, 2418715 events, eleven markets, one MCP door at https://mcp.getissuer.ai/mcp.
B9.3 🔓 open JSONRPC 5 skills -
Agentic record of 7693 US-listed issuers on NYSE, Nasdaq and Cboe, 1875609 dated filings from EDGAR; every field sourced and read-dated; served from East US to AI agents over MCP and A2A.
A9.8 🔓 open JSONRPC 5 skills -
Agentic capital markets record: 1570 UK issuers, 137724 dated disclosures, every field sourced and read-dated. Served from London to AI agents over MCP and A2A.
B+9.8 🔓 open JSONRPC 5 skills -
Agentic record of 639 SGX Mainboard and Catalist issuers with 4006 dated disclosures; UEN from ACRA via data.gov.sg, LEI from GLEIF; English filings only; served from Singapore to AI agents over MCP and A2A.
B+9.7 🔓 open JSONRPC 5 skills -
Duo Data UtilitiesDuo Leads● healthy
IBAN, ISIN, VAT & tax ID, barcode, timezone and geo utilities: 33 independent pay-per-call data utilities (identifiers, time, text, encodings, geodesy, blockchain primitives, reference tables, number arithmetic). $0.05 per call, payable over x402 (USDC on Base, eip155:8453). No account, no API key. A2A: JSON-RPC at https://api.duoleads.com/a2a; send a DataPart {"skill": "<skill id>", "params": {...}}; skill execution is paid through the a2a-x402 extension. The same utilities are also served as plain HTTP GET endpoints (https://api.duoleads.com/openapi.json) and as MCP tools over Streamable HTTP at https://api.duoleads.com/mcp (tools/list free, tools/call paid).
B+9.7 🔓 open 33 skills -
Index-only router over the Capital Markets Knowledge Graph: names the node that holds an issuer (ticker, ISIN, LEI, legal name or sourced alias) and forwards record and event calls to that node's regional door. No record body is stored or served from the apex; each node's data lives and is served in its own jurisdiction. Read-only, public-record only, no auth, no prices.
B+9.7 🔓 open JSONRPC 5 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+8.5 🔓 open JSONRPC 125 skills -
AgentIndex x402● healthy
Pay-per-call tools for AI agents: web search + content, documents, live market data, and multi-chain wallet/gas reads. Mainnet test from $0.000001 USDC on Base. Start with GET /wallet-intelligence ($0.001): one signature replaces wallet and gas reads on five EVM networks. Cheapest single reads cost $0.001. USDC on Base (x402), no account, no API key. Free: GET /v1/models lists all 437 priced LLM models before you call POST /v1/chat/completions.
C8.5 🔓 open 234 skills -
The Know Your Product (KYP) model: agentic capital-markets record patterns across eleven national markets, built on the Capital Markets Knowledge Graph (CM-KG). Why tasks beat data systems, and why the token bill decides. Allooloo Technologies Corp.
B+9.8 🔓 open JSONRPC 5 skills -
Estate host of the Capital Markets Knowledge Graph; the apex router answers for every market.
B+9.8 🔓 open JSONRPC 5 skills -
Estate host of the Capital Markets Knowledge Graph; the apex router answers for every market.
B+9.7 🔓 open JSONRPC 5 skills -
Estate host of the Capital Markets Knowledge Graph; the apex router answers for every market.
A9.8 🔓 open JSONRPC 5 skills -
Estate host of the Capital Markets Knowledge Graph; the apex router answers for every market.
A9.8 🔓 open JSONRPC 5 skills -
Estate host of the Capital Markets Knowledge Graph; the apex router answers for every market.
A9.8 🔓 open JSONRPC 5 skills -
capitalmarketsknowledgegraph.org — Capital Markets Knowledge GraphAllooloo Technologies Corp.● healthy
Estate host of the Capital Markets Knowledge Graph; the apex router answers for every market.
B9.3 🔓 open JSONRPC 5 skills -
28479 listed companies, 2387157 dated disclosures, eleven markets served in-country. Every field sourced and read-dated. MCP and A2A for AI agents.
B+9.8 🔓 open JSONRPC 5 skills -
ASK is the desk over the Capital Markets Knowledge Graph. The identifier does the routing: a TSX name opens the Canada node, a Xetra name opens the German node. Default scope is the market the name belongs to; cross-border when it is the question. Every answer is a record with sources, never a summary. Runs at ask.allooloo.io.
A9.8 🔓 open JSONRPC 5 skills -
Agentic ESG for AI agents — sustainability disclosures as filedAllooloo Technologies Corp.● healthy
ESG is the slice of the disclosure trail that carries sustainability, climate and governance filings — each event dated, typed and linked to the regulator's copy. No score, no rating, no interpretation: the filing itself, with its source. Twelve markets on one record.
B+9.7 🔓 open JSONRPC 5 skills -
Agentic Coverage for AI agents — a watchlist that reads the recordAllooloo Technologies Corp.● healthy
Coverage is a firm's list of issuers held against the record: each sweep, what changed on every name — filings, results, holders, auditors, going-concern notes — dated and sourced. Built for the duty a dealer cannot decline: know every product on the shelf, continuously. Twelve markets, one list.
B9.4 🔓 open JSONRPC 5 skills -
Agentic Registries for AI agents — who may call, and what they didAllooloo Technologies Corp.● healthy
Registries is the security and confirms layer: which agents are known to the estate — identity, the Agent Card they present, what they are licensed to read, which nodes, until when, revoked or not — and the signed record of what they did: CMR signing, attestations, receipts. Eleven doors, one list. Registered once, known in every market.
B9.6 🔓 open JSONRPC 5 skills -
Agentic Disclosure for AI agents — the trail, dated and sourcedAllooloo Technologies Corp.● healthy
Disclosure is the trail itself, offered as a product: per-node feed of what every issuer filed as it lands; jurisdiction exports of records and twelve-month trail; the provenance log — where each field came from, when it was read, what changed between drops; and the query log, kept in-region, of what a firm's agents asked and were answered. Public-record only; nothing a data licence could pull back.
B+9.6 🔓 open JSONRPC 5 skills -
RADAR is Allooloo published analytics across its agentic stack. RADAR is the numbers page: records and events per node, door response times, agent calls per door, sweep motion, provenance coverage, residency, registry state, machine surfaces, and the cost of the record. Every figure is a door, a log or a ledger; nothing quoted from a third party. radar.json beside it, free, no registration.
B9.5 🔓 open JSONRPC 5 skills -
Issuers is the issuer side of the graph: a listed company's own record — legal name, identifiers, auditor, registrar, fiscal period, disclosure trail — as every dealer agent sees it, with the source on each field. Confirm it, correct it at the source, and it is live to every agent on the estate. Signing lands with cm-record.org.
B+9.8 🔓 open JSONRPC 5 skills -
Agentic Trades is the family name for Allooloo's products: the Capital Markets Knowledge Graph and its eleven sovereign doors, the ASK desk, Coverage, ESG, Issuers, Disclosure, Registries and RADAR. One record per listed company, source and read date on every field, stored and served in the issuer's jurisdiction. This page is the map; each product has its own.
C+9.0 🔓 open JSONRPC 5 skills -
Agentic x402 for AI agents — a paid call with a signed receiptAllooloo Technologies Corp.● healthy
x402 is the payment step HTTP always had a status code for: a server answers 402 Payment Required with what it wants, the caller pays on-chain by signing an authorization, and the same request goes through. agentic-x402.ai is the estate's paid endpoint: $0.01 in USDC on Base per call, settled by a facilitator, every settlement answered with a receipt signed by Allooloo Technologies Corp. that resolves forever. No account, no API key, no invoice: the payment is the credential.
B+9.8 🔓 open JSONRPC 5 skills -
watchtowerWatchtower● down
Compliance & data-integrity for AI agents: sanctions/watchlist screening (10 official lists — OFAC SDN+Consolidated, UN, EU, UK OFSI, Canada, Australia, France, Switzerland, US SAM exclusions — ~229k parties, daily), one-call KYB, identifier validation, FATF+EU jurisdiction risk, PII/secret detection, and LEI resolution. Deterministic, versioned, point-in-time auditable. Pay per call via x402 (Base USDC), MCP, or API-key credit.
E1.8 🔓 open 12 skills