{"name":"co.huggingface/hf-mcp-server","namespace":"co.huggingface","leaf":"hf-mcp-server","title":"Hugging Face","description":"Connect to Hugging Face Hub and thousands of Gradio AI Applications","verdict":"degraded","reasons":["server_json_invalid"],"checks":[{"name":"registry status","status":"pass","detail":"active"},{"name":"server.json valid","status":"fail","detail":"jsonschema validation failed with 'https://static.modelcontextprotocol.io/schemas/2025-10-17/server.schema.json#'"},{"name":"repo reachable","status":"skip","detail":"no repository declared"},{"name":"remote reachable","status":"pass","detail":"HTTP 401 via initialize"},{"name":"MCP conformance","status":"warn","detail":"auth-gated (HTTP 401): alive, not verifiable keyless"},{"name":"remote reachable","status":"pass","detail":"HTTP 200 via initialize"},{"name":"MCP conformance","status":"pass","detail":"initialize handshake ok"},{"name":"tools/list","status":"pass","detail":"4 tools: hf_whoami, hub_repo_search, hub_repo_details, hf_fs"},{"name":"remote reachable","status":"pass","detail":"HTTP 200 via initialize"},{"name":"MCP conformance","status":"pass","detail":"initialize handshake ok"},{"name":"tools/list","status":"pass","detail":"4 tools: hf_whoami, hub_repo_search, hub_repo_details, hf_fs"},{"name":"at least one live entrypoint","status":"pass","detail":"3 alive"},{"name":"spec 2026-07-28","status":"warn","detail":"needs-migration: no server/discover, rejects handshake-free requests, still mints Mcp-Session-Id, routing headers not enforced"}],"signals":{"repo":{"kind":"none","status":"none"},"packages":null,"remotes":[{"url":"https://huggingface.co/mcp?login","type":"streamable-http","status":"reachable","httpStatus":401,"conformance":"auth_gated","probe":"initialize"},{"url":"https://huggingface.co/mcp","type":"streamable-http","status":"reachable","httpStatus":200,"conformance":"initialize_ok","probe":"initialize","idEchoed":true,"toolsStatus":"ok","toolCount":4,"toolNames":["hf_whoami","hub_repo_search","hub_repo_details","hf_fs"],"protocolVersion":"2025-06-18","capabilities":["extensions","resources","tools"],"sessionIssued":true},{"url":"https://huggingface.co/mcp","type":"streamable-http","status":"reachable","httpStatus":200,"conformance":"initialize_ok","probe":"initialize","idEchoed":true,"toolsStatus":"ok","toolCount":4,"toolNames":["hf_whoami","hub_repo_search","hub_repo_details","hf_fs"],"protocolVersion":"2025-06-18","capabilities":["extensions","resources","tools"],"sessionIssued":true}],"serverJson":{"status":"invalid","schema":"https://static.modelcontextprotocol.io/schemas/2025-10-17/server.schema.json","errors":["jsonschema validation failed with 'https://static.modelcontextprotocol.io/schemas/2025-10-17/server.schema.json#'","- at '/repository': missing properties 'url', 'source'"]}},"aliveEntrypoints":3,"probedEntrypoints":3,"registryStatus":"active","checkedAt":"2026-09-13","tier":"A","firstSeenCensus":"2026-07","url":"https://roninforge.org/data/state-of-mcp/servers/co.huggingface/hf-mcp-server/","license":"CC-BY-4.0","licenseUrl":"https://creativecommons.org/licenses/by/4.0/","cite":"RoninForge.org, \"State of MCP: a dated census of the official Model Context Protocol registry\", 2026-09-13. CC BY 4.0. https://roninforge.org/data/state-of-mcp/","dataset":"https://roninforge.org/data/state-of-mcp/","methodology":"https://roninforge.org/data/state-of-mcp/methodology/"}