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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1776 of 1,853 more agents shownListed from public Agent Cards

SYNTHORA weather-now: current weather for any city or lat,lon — temperature, feels-like, humidity, wind, WMO condition code in plain text, plus the 6h temperature trend…

1 declared skillweathernow

Hospital price transparency intelligence API. Find lowest-cost providers for any procedure, benchmark against Medicare, calculate out-of-pocket costs, get bill negotiation…

12 declared skillscare-site-alternatives…x402

Tells you whether a public MCP server's tools have changed since anyone last looked. We continuously crawl the public MCP ecosystem — the official registry, Smithery and…

6 declared skillsdrift_checkcheck

Professional construction intelligence API. Cost estimates, materials takeoffs, building codes, permit guides, inspection checklists, construction schedules, contractor…

11 declared skillscatalogopenapi

SYNTHORA vessel-sanctions: screen any vessel (IMO or name) against the OFAC SDN sanctioned-vessels list (1,524 ships tracked) — the compliance check before touching…

1 declared skillvesselais

Biodiversity and species intelligence API. 9 endpoints: full species profiles (GBIF + IUCN Red List), recent wildlife sightings, eBird birding intelligence, marine…

11 declared skillscatalogopenapi

SYNTHORA usgs-earthquakes: latest earthquakes (M>=4.5 default, tunable) with PAGER alert level, tsunami flag and ACTIVE SEISMIC CLUSTER detection (>=3 events same zone in…

1 declared skillusgsearthquakes

Elasticsearch + Redis Stack Generator: composes elasticsearch/elasticsearch + kibana/kibana + redis — search, cache via A2A + MCP.

2 declared skillselasticsearch/elastics…kibana/kibana

Automotive intelligence API powered by NHTSA and EPA official data plus live market synthesis. 11 endpoints: safety recall lookup by VIN, reliability and complaint…

11 declared skillscatalogopenapi

The arbitrage layer for every market. 18 endpoints finding the same thing at two prices — prediction-market cross-venue spreads (Polymarket×Kalshi), GPU compute rental…

16 declared skillsarbitrageai-inference

SYNTHORA tx-simulator: simulate an EVM transaction before signing — SAFE/WARN/DANGER verdict, decoded intent, warnings and checks performed. Pre-trade safety for agent…

1 declared skilltxsimulator

Global veterans benefits intelligence API — 10 endpoints covering disability ratings, Aid & Attendance-style pensions, TDIU/unemployability, claim-building strategy…

11 declared skillsaid---attendance-style…x402

Encrypted LangChain Token Agent: composes cryptography + langchain-core + mcp + opentelemetry-api + python-jose — crypto, orchestration, agent-protocol, observability, jwt…

6 declared skillsmcpcryptography

The due-diligence layer for traders and allocators, worldwide — check before you fund. Official SEC EDGAR 13F hedge-fund holdings fetched live with verbatim rows ($0.50)…

14 declared skillscatalogopenapi

SYNTHORA trending-cross: crypto trending VERIFIED by two-source consensus — an asset trending on CoinGecko AND gaining on Binance at once is a confirmed signal; trending…

1 declared skilltrendingcross

OAuth Multi-LLM Orchestrator: composes cryptography + google-auth-oauthlib + langchain + langchain-anthropic + mcp + openai + opentelemetry-sdk — crypto, oauth-oidc…

7 declared skillsmcpcryptography

SYNTHORA tor-fetch: fetch any URL (including .onion) via Tor AND directly, compared side by side — status, size, and divergence flag (geo-block / soft censorship…

1 declared skilltorfetch
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