gitnexus-guide

name: gitnexus-guide description: "Use when the user asks about GitNexus itself — available tools, how to query the knowledge graph, MCP resources, graph schema, or workflow reference. Examples: "What GitNexus tools are available?", "How do I use GitNexus?""

GitNexus Guide

Quick reference for all GitNexus MCP tools, resources, and the knowledge graph schema.

Always Start Here

For any task involving code understanding, debugging, impact analysis, or refactoring:

Read gitnexus://repo/{name}/context — codebase overview + check index freshness
Match your task to a skill below and read that skill file
Follow the skill's workflow and checklist

If step 1 warns the index is stale, run node .gitnexus/run.cjs analyze in the terminal first.

Skills

Task	Skill to read
Understand architecture / "How does X work?"	`gitnexus-exploring`
Blast radius / "What breaks if I change X?"	`gitnexus-impact-analysis`
Trace bugs / "Why is X failing?"	`gitnexus-debugging`
Rename / extract / split / refactor	`gitnexus-refactoring`
Tools, resources, schema reference	`gitnexus-guide` (this file)
Index, status, clean, wiki CLI commands	`gitnexus-cli`

Tools Reference

Tool	What it gives you
`query`	Process-grouped code intelligence — execution flows related to a concept
`context`	360-degree symbol view — categorized refs, processes it participates in
`impact`	Symbol blast radius — what breaks at depth 1/2/3 with confidence
`detect_changes`	Git-diff impact — what do your current changes affect
`rename`	Multi-file coordinated rename with confidence-tagged edits
`cypher`	Raw graph queries (read `gitnexus://repo/{name}/schema` first)
`list_repos`	Discover indexed repos (paginated — `limit`/`offset`)

Paginating `list_repos`

list_repos is paginated so a large registry is not truncated by MCP/LLM token limits. It takes optional limit (default 50, max 200) and offset, and returns:

{
  "repositories": [
    { "name": "...", "path": "...", "indexedAt": "...", "lastCommit": "...", "stats": { } }
  ],
  "pagination": {
    "total": 437,
    "limit": 50,
    "offset": 0,
    "returned": 50,
    "hasMore": true,
    "nextOffset": 50
  }
}

To enumerate every repository, keep calling with offset set to pagination.nextOffset until hasMore is false:

list_repos {}               → repos 1–50,    nextOffset 50,  hasMore true
list_repos { offset: 50 }   → repos 51–100,  nextOffset 100, hasMore true
…
list_repos { offset: 400 }  → repos 401–437,                 hasMore false   (done)

Notes: offset ≥ total returns an empty page (with total still reported). Out-of-range or malformed limit/offset (non-integer, limit outside [1, 200], offset < 0) are rejected with a clear error — limit above the max is rejected, not silently capped. The order is deterministic (lower-cased name, then path), so paging never skips or duplicates an entry while the registry is unchanged.

Resources Reference

Lightweight reads (~100-500 tokens) for navigation:

Resource	Content
`gitnexus://repo/{name}/context`	Stats, staleness check
`gitnexus://repo/{name}/clusters`	All functional areas with cohesion scores
`gitnexus://repo/{name}/cluster/{clusterName}`	Area members
`gitnexus://repo/{name}/processes`	All execution flows
`gitnexus://repo/{name}/process/{processName}`	Step-by-step trace
`gitnexus://repo/{name}/schema`	Graph schema for Cypher

Graph Schema

Nodes: File, Function, Class, Interface, Method, Community, Process Edges (via CodeRelation.type): CALLS, IMPORTS, EXTENDS, IMPLEMENTS, DEFINES, MEMBER_OF, STEP_IN_PROCESS

MATCH (caller)-[:CodeRelation {type: 'CALLS'}]->(f:Function {name: "myFunc"})
RETURN caller.name, caller.filePath