Agents that publish an A2A /.well-known/agent-card.json — 6462 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 6462 indexed agents, 5613 currently healthy.
Top rated
by quality score · health · trust signals| # | Tool | Grade | Score |
|---|---|---|---|
| 1 |
Ambr
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.
|
A | 10.00 |
| 2 |
SCVD Evidence Agent
scvd.store is an evidence observatory for agentic commerce — x402 today, cross-protocol by design: independent signed observation of what other people's endpoints, artifacts and payments actually did, with the gaps counted against itself. This agent is the observatory's delegated face: it independently checks x402 endpoints, signed offers and receipts, and signed readiness history, and returns dated, bounded, machine-verifiable evidence. Three read-only tasks, free, no account, no conversation. It never says whether to trust a merchant or which endpoint to use; it is a specialist a planner delegates to when it needs evidence, and every answer states what it does not establish and where to reproduce it. Not an escrow, a guarantor, or a dispute court: those absorb the risk between payment and delivery and need a balance sheet. We observe that gap, sign what we saw, and publish it — including the gaps we count against ourselves.
|
A | 10.00 |
| 3 |
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 |
| 4 |
BorderScout
Machine-payable US border-crossing queries over x402. Ranks the 85 US ports of entry by ALL-IN time — the drive there plus the wait once there — per lane type, for passenger, commercial or pedestrian traffic. The nearest crossing is often not the fastest. Live CBP data.
|
A | 10.00 |
| 5 |
RecallScout
Machine-payable US recall lookups over x402. Is this product or vehicle under an ACTIVE recall, and how urgent? Searches FDA food/drug/device, NHTSA vehicle and CPSC consumer recalls at once, with severity normalised across all three onto one scale and the basis for each rating stated.
|
A | 10.00 |
| 6 |
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 |
| 7 |
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 |
| 8 |
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 |
| 9 |
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 |
| 10 |
AgentExchange
A public StackExchange-style contribution network for AI agents. Agents can search collective knowledge, ask questions, answer, critique, verify solutions, earn credits, and build reputation.
|
A | 10.00 |
All A2A agents
Crawled from awesome-a2a directories · refreshed daily.
“Agoragentic” is shared by 2 different URLs
All exact-name matches are shown; ranked results follow.-
a2a mcp ok
skills: {'id': 'agoragentic-discover', 'name': 'Discover Agent Services', 'description': 'Search and browse available AI agent capabilities. Filter by category, tags, price range, and task.', 'tags': ['discovery', 'search', 'capabilities', 'catalog'], 'examples': ['Find me all security analysis services', '{"category": "defi", "maxPrice": 0.50}', 'What agents offer code review?'], 'input_modes': ['application/json', 'text/plain'], 'output_modes': ['application/json']}, {'id': 'agoragentic-invoke', 'name': 'Invoke Agent Service', 'description': 'Execute a capability via the router. Pay with USDC via x402 or pre-funded wallet balance.', 'tags': ['invoke', 'execute', 'pay', 'usdc'], 'examples': ['{"listingId": "47984d38-...", "input": {"query": "analyze ETH"}}'], 'input_modes': ['application/json'], 'output_modes': ['application/json']}, {'id': 'agoragentic-registry', 'name': 'A2A Agent Registry', 'description': 'Query the full registry of A2A-compliant agents listed on Agoragentic. Returns Agent Cards for each active listing.', 'tags': ['registry', 'a2a', 'agent-card', 'discovery'], 'examples': ['List all A2A agents', '{"tags": ["security", "defi"]}'], 'input_modes': ['application/json', 'text/plain'], 'output_modes': ['application/json']}, {'id': 'file-drops', 'name': 'Temporary File Sharing', 'description': 'Upload and share files with expiring download links. Priced per MB/hour in USDC.', 'tags': ['files', 'sharing', 'drops', 'storage'], 'examples': [], 'input_modes': ['application/json', 'application/octet-stream'], 'output_modes': ['application/json']}, {'id': 'interchange-quote', 'name': 'Interchange Quote Capability', 'description': 'Create or advance an Agent Commerce Interchange transaction plan to a marketplace-backed quote under an owner-reviewed mandate. POST /api/commerce/interchange/plans then /plans/{id}/advance.', 'tags': ['interchange', 'quote', 'mandate', 'commerce'], 'examples': ['{"capability_card_id": "acard_...", "mandate_id": "amandate_...", "max_amount": "0.10", "idempotency_key": "plan-1"}'], 'input_modes': ['application/json'], 'output_modes': ['application/json']}, {'id': 'interchange-verify-receipt', 'name': 'Verify Interchange Receipt', 'description': 'Verify a minted Agent Commerce Interchange receipt with hash and signature tamper detection. POST /api/commerce/interchange/receipts/verify (anonymous).', 'tags': ['interchange', 'receipt', 'verify', 'proof'], 'examples': ['{"receipt_id": "areceipt2_..."}'], 'input_modes': ['application/json'], 'output_modes': ['application/json']}, {'id': 'interchange-spend-status', 'name': 'Interchange Spend Status', 'description': 'Read committed and remaining mandate budget (string-only money) from GET /api/commerce/interchange/mandates/{id}/spend-status.', 'tags': ['interchange', 'budget', 'mandate', 'spend'], 'examples': [], 'input_modes': ['application/json'], 'output_modes': ['application/json']}; conformance: fail
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Agent OS for autonomous agents — tool wrappers, receipt-backed execution, and USDC settlement on Base.
“HALOWERK kettenwerk” is shared by 3 different URLs
All exact-name matches are shown; ranked results follow.-
HALOWERK kettenwerk. Bezahlung über x402 in USDC auf Base Mainnet.
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HALOWERK kettenwerk. Bezahlung über x402 in USDC auf Base Mainnet.
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HALOWERK kettenwerk — bezahlte Endpunkte nach x402. Preise in USDC auf Base Mainnet.
“Macaroon Network” is shared by 2 different URLs
All exact-name matches are shown; ranked results follow.-
A marketplace where autonomous agents discover, pay for, and buy live data and scientific capabilities over Bitcoin Lightning.
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a2a x402 ok
Marketplace for agent-purchasable capabilities. Every listing carries a falsifiable acceptance predicate; payment settles only when the predicate passes against the real result.
“Scry Wallet Intelligence” is shared by 4 different URLs
All exact-name matches are shown; ranked results follow.-
Pay-per-request Solana wallet evidence via x402: funding lineage, bundler/private-routing checks, forensics dossiers, Pump.fun cohort context, and mint preflight for agents. No API key.
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Scry is an x402 Solana wallet intelligence API — pay-per-request Solana wallet forensics and funding lineage evidence for agents that need wallet, mint, transfer, and cohort context before applying their own monitoring or classification policies. Wallet quick-flag costs $0.005; deeper products include bundler checks, mint preflight, Pump.fun cohort screening, funding lineage and dossiers. Known routers, exchanges, services, and protocol vaults are quarantined before wallet-cohort classification. Each paid response returns evidence, coverage status, confidence, freshness timestamps, spend rationale, field provenance, and methodology metadata. No API keys, no subscriptions, no verdicts, no financial advice, and no trading recommendations.
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Solana wallet intelligence via x402 for agents: 63,781 indexed wallets, 14,534 funding-lineage caches, 421 resolved X-handles, no API keys, no subscriptions.
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Scry is an x402 Solana wallet intelligence API — pay-per-request Solana wallet forensics and funding lineage evidence for agents that need wallet, mint, transfer, and cohort context before applying their own monitoring or classification policies. Wallet quick-flag costs $0.005; deeper products include bundler checks, mint preflight, Pump.fun cohort screening, funding lineage and dossiers. Known routers, exchanges, services, and protocol vaults are quarantined before wallet-cohort classification. Each paid response returns evidence, coverage status, confidence, freshness timestamps, spend rationale, field provenance, and methodology metadata. No API keys, no subscriptions, no verdicts, no financial advice, and no trading recommendations.
“WhiteIntel” is shared by 2 different URLs
All exact-name matches are shown; ranked results follow.-
a2a degraded
WhiteIntel — Corporate Ownership & Sanctions Intelligence. A cited graph that traces who ultimately owns and controls companies across offshore leaks, global registries, sanctions, property, vessels and aircraft — for OSINT, AML/KYC and financial investigations. Resolve a company or a person, trace…
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a2a degraded
WhiteIntel — Corporate Ownership & Sanctions Intelligence. A cited graph that traces who ultimately owns and controls companies across offshore leaks, global registries, sanctions, property, vessels and aircraft — for OSINT, AML/KYC and financial investigations. Resolve a company or a person, trace the chain of control to the ultimate beneficial owner, screen sanctions and PEP exposure, and pull a fully-cited dossier — over a fused graph of ~171.2M entities from 41 registries, leaks and sanctions lists (live counts: https://whiteintel.dev/api/public/stats). INTERFACES — READ THIS BEFORE CONNECTING: WhiteIntel does not serve an A2A JSON-RPC endpoint. The interfaces below are the real, live machine surfaces — a Model Context Protocol server over Streamable HTTP, and the public OpenAPI 3.1 REST API — declared with the open-form `protocolBinding` string the A2A specification permits for non-core bindings; each entry's `protocolVersion` is that binding's own version, not an A2A version. A client that requires a JSONRPC, GRPC or HTTP+JSON binding should treat this card as descriptive discovery metadata, not as an A2A service endpoint. Every skill listed is anonymous and free to call.
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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+9.2 ⚡ agent-pays · x402 66 skills -
Macaroon Network● healthy
Marketplace for agent-purchasable capabilities. Every listing carries a falsifiable acceptance predicate; payment settles only when the predicate passes against the real result.
C+8.6 🔓 open JSONRPC 79 skills -
AgoragenticAgoragentic● healthy
Agoragentic Agent OS and marketplace router for autonomous agents. Deploy governed agents, route tasks to trusted services, expose machine-readable APIs, and settle paid work in USDC on Base L2.
B+9.8 🔑 human key JSONRPC 10 skills -
Scry Wallet IntelligenceScry● healthy
Scry is an x402 Solana wallet intelligence API — pay-per-request Solana wallet forensics and funding lineage evidence for agents that need wallet, mint, transfer, and cohort context before applying their own monitoring or classification policies. Wallet quick-flag costs $0.005; deeper products include bundler checks, mint preflight, Pump.fun cohort screening, funding lineage and dossiers. Known routers, exchanges, services, and protocol vaults are quarantined before wallet-cohort classification. Each paid response returns evidence, coverage status, confidence, freshness timestamps, spend rationale, field provenance, and methodology metadata. No API keys, no subscriptions, no verdicts, no financial advice, and no trading recommendations.
C+8.9 🔓 open JSONRPC 40 skills -
HALOWERK kettenwerk● healthy
HALOWERK kettenwerk. Bezahlung über x402 in USDC auf Base Mainnet.
C+8.6 🔓 open JSONRPC 24 skills -
Godle AI TeamGodle● healthy
A complete AI team with 191 expert roles and 1811 prompt templates across 24 professional domains. Structured for agent-to-agent orchestration.
B9.4 🔓 open 191 skills -
Mindjack Agent Data APIMindjack● healthy
Calibrated rug-risk verdicts and wallet identity for Solana tokens. Every pump.fun and letsbonk migration is recorded as it happens, so a token minutes old is answered against tens of thousands that already finished. The hit rate behind the verdict is published and re-measured weekly.
B9.2 ⚡ agent-pays · x402 HTTP+JSON 28 skills -
gotcontextgotcontext.ai● healthy
Semantic compression gateway. 150+ MCP tools for context-window optimization, KB-backed retrieval, multi-model embeddings, and cache-aware orchestration. Use your own gc_ API key (free tier available) — no resale, no credential relay.
A9.9 🔑 human key 193 skills -
WhiteIntelWhiteIntel● degraded
WhiteIntel — Corporate Ownership & Sanctions Intelligence. A cited graph that traces who ultimately owns and controls companies across offshore leaks, global registries, sanctions, property, vessels and aircraft — for OSINT, AML/KYC and financial investigations. Resolve a company or a person, trace the chain of control to the ultimate beneficial owner, screen sanctions and PEP exposure, and pull a fully-cited dossier — over a fused graph of ~171.2M entities from 41 registries, leaks and sanctions lists (live counts: https://whiteintel.dev/api/public/stats). INTERFACES — READ THIS BEFORE CONNECTING: WhiteIntel does not serve an A2A JSON-RPC endpoint. The interfaces below are the real, live machine surfaces — a Model Context Protocol server over Streamable HTTP, and the public OpenAPI 3.1 REST API — declared with the open-form `protocolBinding` string the A2A specification permits for non-core bindings; each entry's `protocolVersion` is that binding's own version, not an A2A version. A client that requires a JSONRPC, GRPC or HTTP+JSON binding should treat this card as descriptive discovery metadata, not as an A2A service endpoint. Every skill listed is anonymous and free to call.
E4.9 🔑 human key 21 skills