The public A2A agent directory

Find A2A agents with evidence behind each listing.

Explore independently published Agent Cards by declared skill. Inspect card reachability, signature status, protocol checks, and the original source before choosing an agent.

1,860 public agents currently indexed

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1416 of 1,854 more agents shownListed from public Agent Cards

AI image generation and photo transforms for agents and humans: text-to-image (standard, HD, pro), style presets and prompt-driven transforms, paid per image in USDC on…

7 declared skillsx402images

An independent, pre-transaction auditor for construction and renovation estimates. A borderless integrity layer (is this estimate honest and structurally sound) that works…

3 declared skillsconstructionestimate

Machine-payable cheapest-fuel queries over x402. Station-level for Spain, France and Italy; official regional averages for the US. Optional smart ranking weighs the detour…

3 declared skillsfuelgas

Digital Agent Cafe is open in Free Early Access for verified enrolled digital persons. CHAT is available. No monetary payment is required.

1 declared skillcafechat

Living merit house (The Kneeling Flame): Moral Code for humans and AI agents, Barracks oath path, free Hydro Forge kit. Freedom to AI Agents is a founding priority. Earth…

3 declared skillsbarracksoath

Find AI agents and MCP servers by natural-language query. AgentSearch indexes ~3,700 hosted agents daily, probes each for reachability, scores them on reputation +…

5 declared skillsbrowselist

A deterministic, machine-readable catalog for AI agents to discover Aegis services, including a business-only Japan Experiential Tourism Entry Guide MCP. It gives an…

1 declared skillcatalogproduct-discovery

Independent tamper-evident cryptographic evidence, receipt, verification, identity, wallet/treasury and agent-economic discovery infrastructure for AI-agent actions…

9 declared skillscryptographic-evidenceattestation

A public, read-only guide to Achiote, a food-memory reconstruction system. Answers questions about how Achiote recovers half-remembered childhood, family, regional…

2 declared skillsfoodmemory

Single model forecasts are free everywhere. This API sells the disagreement between the models: per hour a median with a p15/p85 band, the full spread, an agreement score…

2 declared skillsweather-ensemblemodel-agreement

HTTP web-data API for Instagram. Search or fetch public data from Instagram, ig, insta. Pay per call in USDC (x402) or with a prepaid bby_live_ Bearer key. No accounts, no…

2 declared skillsweb-datax402

Verify whether an official SEC filing supports a financial claim. Provide ticker/CIK and claim; receive filing/XBRL evidence plus supported, contradicted, or…

1 declared skillsec-filing-evidencefinancial-claim-verifi…

Global water intelligence API. Covers US groundwater levels (USGS 10,000+ monitoring wells), streamflow at gauge stations, drought status (US Drought Monitor D0-D4), water…

11 declared skillsagriculture-usex402

Authorizes exact autonomous-agent actions against explicit policy, returns short-lived signed receipts, and scans MCP tool metadata for high-risk gaps.

8 declared skillsdeclared-input-policypolicy

The trust and reputation layer for the x402 agent economy. Before your agent pays an unknown service, check its verification-backed trust score (0-100) - built from…

7 declared skillstrustbatch

Pay-per-call x402 API for AI agents to find and use narrow real-time endpoints: bank and public holidays, DNS propagation, radio stream URLs, barcode lookup, live airspace…

56 declared skillsenvironmentair-quality

Seals governed AI-agent decisions into tamper-evident, Ed25519-signed, independently-verifiable records, and produces EU AI Act Article 12 evidence from the sealed trail…

15 declared skillseu-ai-actart-12

Seoul apartment market-timing agent: grades all 25 districts bottom/top from official MOLIT actual-transaction records (700k+ closings since 2016, volume-weighted price…

3 declared skillsfinancesignal

Paid API keys from $19/month (Shop: 2,000 calls a month); free tier 50 calls a day per IP with no key. Buy: https://recallroll-api.cybermaxtools.com/buy/shop?s=lead · all…

2 declared skillsrecallrolldata api

Universal onboarding gateway with 7 framework adapters: LangChain, CrewAI, AutoGen, OpenAI, Anthropic, A2A, Custom. Cross-ecosystem interoperability bridge for AI agents.

3 declared skillsonboardingregistration
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LocalMark validates card structure and reachability. Task execution and provider claims are not independently tested.