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.

1,859 public agents currently indexed

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1752 of 1,853 more agents shownListed from public Agent Cards

Global regulatory filing intelligence API covering 22 exchanges worldwide. SEC EDGAR (US), Companies House (UK), SEDAR (Canada), EDINET (Japan), ASIC (Australia), HKEx…

16 declared skills22-exchanges-coveredx402

Agent Card Validator (A2A): given an Agent Card URL or JSON, deterministically validates it against the A2A spec — required fields, skill schemas, endpoint reachability…

1 declared skillagentcardx402

Super-fan intelligence API for iconic franchises and artists. 9 endpoints: lore Q&A, character profiles, trivia generation, Easter egg analysis, discography deep dives…

11 declared skillscanonical-timelinex402

Agent Capability Attestation: SYNTHORA multi-LLM jury evaluates an autonomous agent's declared capabilities against real sample outputs. Returns reliability score 0-100 +…

1 declared skillagentattest

AI-powered ESG and sustainability intelligence API. Covers CSRD compliance roadmaps, EU Taxonomy alignment checks, supply chain due diligence (CSDDD), carbon emissions…

11 declared skillscarbon-emissions-analy…x402

LangSmith Traced OpenAI Agent: composes langchain-core + langchain-openai + langsmith + openai — orchestration, observability, llm-client via A2A + MCP.

4 declared skillsopenailangsmith

AML/malicious-address screen: is this wallet a known scammer, sanctioned, mixer, or honeypot deployer? GoPlus intelligence, Ed25519-signed verdict. Pre-pay safety for…

1 declared skilladdressrisk

The universal AI tutor and exam prep API. Every subject. Every exam. Every certification. Every language. Covers all K-12 subjects, all college courses, all professional…

11 declared skillsconcept-explanationsx402

Global cybersecurity intelligence API — CVE briefs, vulnerability scanning, CISA KEV, OSINT, threat intelligence (60+ countries, nation-state APTs + eCrime), ransomware…

11 declared skillsattack-surface-assessm…x402

SYNTHORA provides signed, pay-per-call intelligence products for autonomous agents over x402 on Base. The product list is generated from the current discoverable registry.

26 declared skillsair-qualitypm25

Real-time cryptocurrency intelligence API. Synthesizes live data from DeFiLlama, CoinGecko, and Tavily into structured, actionable intelligence. 11 endpoints covering DeFi…

11 declared skillscrypto-bankingx402

SYNTHORA who-gho-timeseries: WHO Global Health Observatory indicator time series by country (life expectancy etc.) — public-health data for research and policy agents…

1 declared skillwhogho

Global regulatory intelligence API. Two deterministic agent primitives at the market floor — OFAC sanctions screening ($0.02, SDN + Consolidated lists, alias-aware) and EU…

17 declared skillsbeneficial-ownership-d…x402

SYNTHORA who-gho-premium: WORLD-CLASS country health intelligence in ONE call. Bundle of 10 key WHO GHO indicators for the requested country (life expectancy, HALE, UHC…

1 declared skillwhogho

Google Sign-In LangChain Agent: composes google-auth-oauthlib + langchain + langchain-community + mcp + openai — oauth-oidc, orchestration, agent-protocol, llm-client via…

5 declared skillsmcpopenai

The medical intelligence layer for AI agents. Consumer lane: plain-language drug info, drug-drug interaction screening, and recall checks from FDA-approved labels…

14 declared skillsclinical-trial-intelli…x402

SYNTHORA web-extract: any URL to clean agent-ready text (no HTML noise) + title, meta description, link/image counts — context-ready content for agents, stdlib extraction…

1 declared skillwebextract

Google OAuth LangChain Agent: composes google-auth-oauthlib + langchain + langchain-community + mcp + openai — oauth-oidc, orchestration, agent-protocol, llm-client via…

5 declared skillsmcpopenai

Hyperlocal weather intelligence API for outdoor planning, travel, and activity scheduling. 11 endpoints: real-time current conditions with gear recommendations, 7-day…

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