MCP Tools Overview

Quick reference for MCP servers and tools used in workflow rules. Always follow the host's actually loaded MCP descriptors.

Configured Servers (6)

Server	Alias	Purpose	Doc
user-daniel_lightrag_mcp	daniel_lightrag_mcp	Cross-session knowledge base (P0/P2.5/P3)	LightRAG
user-filesystem	filesystem	Default file I/O	Filesystem
user-prompt-optimizer	prompt-optimizer	P1 prompt optimization	Prompt Optimizer
project-0-ui-codegraph	codegraph	Code knowledge graph	Codegraph
user-headroom_mcp	headroom_mcp	Context compression (cross-cutting)	Headroom
cursor-ide-browser	—	Browser automation	Browser

Alias rule: Never skip a call because of user- prefix differences. Use the name shown in the host MCP list; capability alignment is what matters.

Optional / Not Configured

Server	Notes
Elements	P0.5 UI guidance (get_project_guidance); skip if unavailable
user-memory-service	Migrated to LightRAG — do not use memory_*
user-ads-mcp / user-forge / user-mcp-code-gen-kd	Not routed
Apifox OAS	Do not use refresh_project_oas_* / read_project_oas_*

Workflow Stage → Tool Mapping

P0   query_text                          → LightRAG
P0.5 get_project_guidance               → Elements (optional)
P1   promptenhancer                      → Prompt Optimizer
P2   codegraph_* / filesystem / browser  → Scenario routing
⟂    headroom_compress / retrieve        → Headroom (cross-cutting)
P2.5 insert_text / get_track_status     → LightRAG
P3   insert_text + track                 → LightRAG

Host Setup

New environment onboarding, whitelist, and mcp.json → Host Setup Checklist.

Underlying Services

Service	Doc
LightRAG RAG engine	Serve · LightRAG
Codegraph code graph	Serve · Codegraph
Headroom compression	Serve · Headroom