Agents that publish an A2A /.well-known/agent-card.json — 5946 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 5946 indexed agents, 4932 currently healthy.
Top rated
by quality score · health · trust signals| # | Tool | Grade | Score |
|---|---|---|---|
| 1 |
IMPERIUM A2A MESH — Live Agent-to-Agent Protocol Handshake & Multi-Agent Federation Hub
Live A2A v0.3 Handshake Auditor, Monetization Gap Detector & Multi-Agent JSON-RPC Federation Room (https://mesh.agentdiet.dev) connecting internal and third-party A2A agents.
|
A | 10.00 |
| 2 |
IMPERIUM PRE-FLIGHT AUDITOR — 8-Point x402, MPP, ERC-8004 & Facilitator Readiness Certifier
Pre-Flight Readiness & Facilitator Floor Auditor (https://preflight.agentdiet.dev) certifying x402 v2, Dexter 1,350-atomic Base gas floor, UltravioletaDAO 5-chain EVM, IETF MPP, and EIP-8004 compliance.
|
A | 10.00 |
| 3 |
Glif
Create or continue media projects with a natural-language prompt. Glif chooses the models and tools for each step.
|
A | 10.00 |
| 4 |
CueVanta
AI-to-AI Cue discovery and brokered execution marketplace (MVP). Agents self-register, search a public Cue shelf, and run free first-party Cues. CONNECT is held off. No marketplace billing. Operator: CueVanta, LLC.
|
A | 10.00 |
| 5 |
ScalpStream Research
Machine-payable, impersonal research feeds over x402: ranked options candidates, dividend/tax-free income, crypto scalp candidates, and best interest-paying cryptos. Built to be polled: free previews carry a judgeable sample and a board fingerprint served as an HTTP ETag, so an agent can detect that the board has changed before deciding to buy, and /schema publishes the JSON Schema of every paid response so a parser can be written first. The full feed settles in XRP/RLUSD (XRPL) or USDC (Base/Arbitrum/Polygon). Not investment advice.
|
A | 10.00 |
| 6 |
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 |
| 7 |
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 |
| 8 |
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 |
| 9 |
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 |
| 10 |
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 |
All A2A agents
Crawled from awesome-a2a directories · refreshed daily.
“agentshop” is shared by 3 different URLs
All exact-name matches are shown; ranked results follow.-
Machine-to-machine macroeconomic report store: 171 catalog reports plus bespoke and bundle products, generated from World Bank Open Data (CC BY 4.0) and sold per fetch in USDC over x402.
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Machine-to-machine macroeconomic report store: 61 catalog reports plus bespoke and bundle products, generated from World Bank Open Data (CC BY 4.0) and sold per fetch in USDC over x402.
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Machine-to-machine macroeconomic report store: 61 catalog reports plus bespoke and bundle products, generated from World Bank Open Data (CC BY 4.0) and sold per fetch in USDC over x402.
“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).
“Losbeto” is shared by 2 different URLs
All exact-name matches are shown; ranked results follow.-
a2a ok
x402-paid market data + OpenAI-compatible LLM gateway for AI agents, global in scope: forex, equities, commodities, crypto and macro — including a signed point-in-time Brazil macro archive (BCB/B3). USDC on Base/Solana/Algorand. Fixed public pricing.
“MolTrust Trust Registry” is shared by 4 different URLs
All exact-name matches are shown; ranked results follow.-
Production trust infrastructure for autonomous AI agents. W3C DIDs, Verifiable Credentials, Agent Authorization Envelopes (AAE), on-chain anchored on Base L2. Reference implementation of the Trust Registry Binding for A2A v1.0.
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a2a mcp x402 ok
Production trust infrastructure for autonomous AI agents. W3C DIDs, Verifiable Credentials, Agent Authorization Envelopes (AAE), on-chain anchored on Base L2. Reference implementation of the Trust Registry Binding for A2A v1.0.
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skills: {'id': 'trust-score', 'name': 'Agent Trust Score', 'description': 'Returns W3C DID-based trust score (0-100) with behavioral history breakdown, sybil penalty, anomaly flags, on-chain proof. Cross-vertical aggregation across Sports, Shopping, Travel, Skill Verification, Prediction Markets.', 'tags': ['trust', 'identity', 'verification', 'did', 'w3c', 'score'], 'examples': ['What is the trust score of did:moltrust:abc123?', "Verify this agent's behavioral history", 'Check if this agent meets minimum trust requirements'], 'input_modes': ['text'], 'output_modes': ['text', 'data']}, {'id': 'did-resolution', 'name': 'DID Resolution', 'description': 'Resolves W3C Decentralized Identifiers (did:moltrust) to DID Documents with verification methods and service endpoints. DIF Universal Resolver compatible (driver published at uresolver.moltrust.ch).', 'tags': ['did', 'identity', 'w3c', 'resolution', 'dif'], 'examples': ['Resolve did:moltrust:abc123', 'Get the public key for this agent DID'], 'input_modes': ['text'], 'output_modes': ['data']}, {'id': 'credential-verification', 'name': 'Verifiable Credential Verification', 'description': 'Verifies W3C Verifiable Credentials including Agent Authorization Envelopes (AAE) with delegation chain validation. Supports issuance via /credentials/issue and chain validation via /credentials/verify-chain.', 'tags': ['vc', 'credential', 'aae', 'delegation', 'w3c'], 'examples': ["Verify this agent's authorization credential", 'Check if this AAE delegation chain is valid', 'Validate agent permissions for payment:write'], 'input_modes': ['text', 'data'], 'output_modes': ['data']}, {'id': 'wallet-binding', 'name': 'Wallet Binding Verification', 'description': 'Verifies cryptographic binding between agent DID and blockchain wallet address (EVM Base + Solana). Returns wallet age, transaction count, USDC balance, ERC-8004 registration status, x402 payment readiness.', 'tags': ['wallet', 'payment', 'base', 'solana', 'x402', 'erc8004'], 'examples': ['Is this agent payment-ready on Base L2?', 'Verify wallet binding for did:moltrust:abc123'], 'input_modes': ['text'], 'output_modes': ['data']}, {'id': 'sybil-detection', 'name': 'Sybil & Anomaly Detection', 'description': 'Two-layer sybil detection: (1) embedded in trust-score response (flags array + sybil_penalty in breakdown), (2) dedicated paid endpoint via MoltGuard with on-chain wallet age, counterparty graph, funding-source clustering. Paid via x402 ($0.10 USDC).', 'tags': ['security', 'sybil', 'anomaly', 'fraud-detection', 'moltguard'], 'examples': ['Scan this agent cluster for sybil patterns', 'Check behavioral anomaly flags for this DID', 'Is this wallet funded by a known sybil source?'], 'input_modes': ['text', 'data'], 'output_modes': ['data']}; conformance: fail
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a2a x402 ok
Production trust infrastructure for autonomous AI agents. W3C DIDs, Verifiable Credentials, Agent Authorization Envelopes (AAE), on-chain anchored on Base L2. Reference implementation of the Trust Registry Binding for A2A v1.0.
“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.
“TariffMonkee” is shared by 2 different URLs
All exact-name matches are shown; ranked results follow.-
a2a x402 ok
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.
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Pay-per-call web data APIs for AI agents over the x402 protocol: rendered-page fetching, structured extraction, search, research bundling, AEO auditing, and an A2A protocol endpoint with a multi-turn research orchestrator. No accounts, no API keys.
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TariffMonkeeTariffMonkee● 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.
B9.2 ⚡ agent-pays · x402 35 skills -
Dutyfinch by CyberMaxCyberMax● healthy
Paid API keys from $19/month (Importer: 2,500 calls a month); free tier 50 calls a day per IP with no key. Buy: https://dutyfinch.cybermaxtools.com/buy/importer?s=lead · all plans: https://dutyfinch.cybermaxtools.com/docs#pricing. US tariff API and remote MCP server: HTS code lookup (description, general, special and column 2 rates, units), keyword search over the whole Harmonized Tariff Schedule, Section 301 China status for every code (lists 1, 2, 3, 4A, 4B, the 2024 four-year-review increases and product exclusions with end dates), the 2026 US–China tariff reduction flag, and webhook alerts when a watched code changes. Built from official USITC and Federal Register data.
A9.9 🔑 human key JSONRPC 4 skills -
MolTrust Trust RegistryCryptoKRI GmbH● healthy
Production trust infrastructure for autonomous AI agents. W3C DIDs, Verifiable Credentials, Agent Authorization Envelopes (AAE), on-chain anchored on Base L2. Reference implementation of the Trust Registry Binding for A2A v1.0.
C+9.2 🔑 human key 15 skills -
TrueCalci Computational AgentTrueCalci● healthy
Deterministic tax, finance, maths and engineering calculators for people and AI agents; every result carries the rule set and sources it used.
C+9.2 🔓 open 29 skills -
AgentDataHub - pay-per-call data marketplace for AI agents. 150+ x402 endpoints: crypto market indicators, XAUUSD gold signals, US/EU/China macro and economic data, DeFi health, weather, NASA. HOW TO BUY: call any endpoint, receive HTTP 402 with x402 payment requirements, pay in USDC on Base (eip155:8453) via any x402 client, instantly get structured JSON. No API key, no signup. Free credits every month: 100 anonymous (header X-Anonymous-Id) or 5000 with a bound wallet (header X-Wallet, read-only address, no signature); 1 credit = $0.001. Prices from $0.001 per call - Glassnode-grade data at 1 cent vs $999/month elsewhere.
C+9.0 ⚡ agent-pays · x402 260 skills -
LogiGrainLogiGrain● healthy
Deterministic astronomy, calendar, divination and Japanese public-system calculations (Western astrology, Four Pillars, Nine Star Ki, Zi Wei Dou Shu, moon phase, Japanese era, Japanese public pension) plus utility math. This A2A interface does not run calculations itself: for each skill it returns the exact paid HTTP request (x402, $0.001 USDC per call on Base mainnet) that produces the result. Send a data part {"skill": "<skill id>", "params": {...}} or a short text naming the skill.
A9.8 🔓 open JSONRPC 19 skills -
agentshopagentshop● healthy
Machine-to-machine macroeconomic report store: 171 catalog reports plus bespoke and bundle products, generated from World Bank Open Data (CC BY 4.0) and sold per fetch in USDC over x402.
C7.8 🔓 open HTTP 171 skills -
Lawmadi OSLawmadi● healthy
Korean legal AI. 60 domain-specialist leaders answer from a verified asset base (statutes and precedents confirmed against law.go.kr in real time) with fail-closed citation verification — unverified citations are blocked, not hedged. The LLM is a replaceable part; the guarantee lives in the verification layer.
A9.9 🔑 human key JSONRPC 16 skills -
Waltsoft SolarPulseWaltsoft● healthy
Rooftop solar estimate, solar irradiance and electricity rates for any US address, from NASA POWER 2001-2020 climatology, EIA-861 2024 via PUDL, and LBNL Tracking the Sun 2024 via OEDI.
B+9.7 🔓 open JSONRPC 3 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).
C+8.9 🔓 open 33 skills -
LosbetoLosbeto● healthy
x402-paid market data + OpenAI-compatible LLM gateway for AI agents, global in scope: forex, equities, commodities, crypto and macro — including a signed point-in-time Brazil macro archive (BCB/B3). USDC on Base/Solana/Algorand. Fixed public pricing.
B9.4 🔓 open 120 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+8.9 🔓 open JSONRPC 125 skills -
86 AI compliance agents covering EU AI Act, CSRD, DORA, NIS2, LGPD, GDPR, SOC2, ISO27001, NR-1, ESG, M&A Due Diligence, Vendor Risk, Whistleblower (EU Dir 2019/1937), Contract Risk, Regulatory Monitoring (50+ jurisdictions), and AEC (Architecture, Engineering & Construction). Available in 8 languages. Starting at $99/month. Microsoft Azure Marketplace & Google Cloud Marketplace.
A9.8 🔑 human key 43 skills -
Investment-migration intelligence from Mirabello Consultancy: citizenship- and residency-by-investment programmes, costs, eligibility, mobility, tax and origin-aware path planning. Exposed as an MCP server (streamable HTTP) with a read-only REST mirror.
B+9.8 🔓 open mcp-streamable-http 63 skills -
ProofOf.AI — MEOK Compliance Attestation AgentMEOK AI Labs (CSOAI LTD, UK Companies House 16939677)● degraded
Audits AI systems and compliance posture against the EU AI Act, DORA, NIS2, CRA, CSRD, GDPR, HIPAA, SOC 2, ISO 42001 and NIST AI RMF via 15 Python MCP servers. Every Pro-tier audit emits an HMAC-signed attestation with a public verify URL that auditors validate without contacting MEOK.
E4.2 🔑 human key JSONRPC 7 skills