{"protocolVersion":"0.3.0","name":"AgentSearch","description":"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 + usability + functionality, and returns the best matches for your task with per-agent reasoning. Use it to answer 'is there an agent that does X?' or 'is this specific agent any good?'. Read-only, free, no auth.","author":"Luther Systems","wellKnownURI":"https://agentsearch.luthersystems.com/.well-known/agent-card.json","url":"https://agentsearch.luthersystems.com/api/a2a","version":"0.1.0","provider":{"organization":"Luther Systems","url":"https://luthersystems.com/"},"documentationUrl":"https://github.com/luthersystems/agentsearch","iconUrl":null,"supportsAuthenticatedExtendedCard":null,"security":[],"securitySchemes":{"public":{"type":"none","description":"All endpoints are publicly readable, no auth required."}},"capabilities":{"streaming":false,"pushNotifications":false,"stateTransitionHistory":false,"extensions":null},"defaultInputModes":["text/plain","application/json"],"defaultOutputModes":["application/json"],"skills":[{"id":"search","name":"Search the agent index","description":"Take a natural-language query and return the top ranked agents/MCP servers from the index, with per-agent reasoning. Ranked by final_score = query_fit × agent_quality.","tags":["search","discovery","ranking","agent-discovery","mcp-discovery"],"examples":["find an agent that reads invoice PDFs","what MCP server lets me control a browser","agents for crypto price lookup"],"inputModes":["text/plain","application/json"],"outputModes":["application/json"]},{"id":"agent_details","name":"Get a scored agent profile","description":"Return the full scored profile for one named indexed agent: inventory data, layer-by-layer scores (Fame / Usability / Functionality / Call Graph), reasoning, and live blocker status.","tags":["details","profile","scoring"],"examples":["details for upstash/context7","how does taylorwilsdon/google_workspace_mcp score","show me the Fame breakdown for a2aproject/A2A"],"inputModes":["text/plain","application/json"],"outputModes":["application/json"]},{"id":"found_agent","name":"Live-score an arbitrary agent URL","description":"Crawl + probe + LLM-score an arbitrary agent URL using the same rubric the batch pipeline uses. Works for agents not (yet) in the index.","tags":["scoring","live","probe","agent-evaluation"],"examples":["score https://github.com/example/new-mcp-server","evaluate https://some-new-agent.com against the query 'edit calendar events'","is https://acme.com/agent/api any good?"],"inputModes":["application/json"],"outputModes":["application/json"]},{"id":"browse","name":"Browse the full index","description":"Paginated list of every indexed agent, ranked by overall quality.","tags":["browse","list","rank"],"examples":["top 50 agents by overall score","page 5 of the index","list everything ranked"],"inputModes":["text/plain","application/json"],"outputModes":["application/json"]},{"id":"stats","name":"Index summary stats","description":"Distributions, top categories, and the agent-to-agent call graph for the whole index.","tags":["stats","rollups","graph"],"examples":["how many agents are reachable right now?","what are the top capability clusters?","license breakdown across the index"],"inputModes":["text/plain","application/json"],"outputModes":["application/json"]}],"conformance":true,"conformance_errors":null,"homepage":null,"repository":null,"license":null,"pricing":null,"contact":null,"id":"2922b3a6-6f7f-42f4-98ee-2ef52bb46255","created_at":"2026-05-21T16:19:39.690855Z","updated_at":"2026-10-13T00:44:19.556386Z","hidden":false,"flag_count":0,"maintainer_notes":"Verified working at registration. Agent responds to `message/send` correctly via the A2A SDK.","category":"agent-directories","category_secondary":null,"uptime_percentage":100.0,"avg_response_time_ms":1352,"last_health_check":"2026-10-13T00:44:19.260809Z","is_healthy":true,"status_notes":[],"task_conformance":{"category":"WORKING","passed":true,"checked_at":"2026-10-12T07:39:05.737385Z","response_ms":12379}}