nexusm-mcp-server

Nexusm MCP Server — generic MCP server exposing Nexusm core capabilities (memory, conversation, knowledge, feedback, context) to MCP clients via @modelcontextprotocol/sdk stdio + Streamable HTTP transports.

Published to npm as @nexusm/mcp-server.

Tracked in Nexusm main repo: packages/nexusm-mcp-server (US-037 v7.0).

Status

Wave 2 done (2026-05-22): 4 tools fully wired to @nexusm/sdk (context_retrieve / memory_search / memory_create / memory_feedback) + full §M-3 HTTP→MCP error mapping (mapHttpStatusToMcpError + 2 new error codes Unauthorized/RateLimited) + Prometheus metrics with cardinality guard + cross-substory + E2E + schema_sync integration tests. Wave 3 (nexus-claude-plugin Anthropic marketplace) pending — see proposal.

Known Wave 2 limitations: (1) CI red until Gate-1 — @nexusm/sdk@1.3.0 npm publish pending (user action; SDK rename merged at 1fbdd69 in nexus-sdk-js main); (2) integration tests env-gated (require NEXUS_TEST_API_URL/TOKEN/TENANT_ID Forgejo secrets, currently dormant); (3) Python backend mcp.py metrics defined but emit-site wiring deferred to Wave 3 (FU-MCP-BACKEND-EMIT-WIRING); (4) HTTP transport per-request server.connect() is scaffold-only — Wave 3 entry condition (FU-MCP-HTTP-SESSION) before plugin TASK-019 E2E runs.