| name | ontoindex-guide |
| description | Use when the user asks about OntoIndex itself — available tools, how to query the knowledge graph, MCP resources, graph schema, or workflow reference. Examples: "What OntoIndex tools are available?", "How do I use OntoIndex?" |
OntoIndex Guide
Quick reference for all OntoIndex MCP tools, resources, and the knowledge graph schema.
Always Start Here
For any task involving code understanding, debugging, impact analysis, or refactoring:
- Read
ontoindex://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 npx ontoindex analyze in the terminal first.
Skills
| Task | Skill to read |
|---|
| Understand architecture / "How does X work?" | ontoindex-exploring |
| Blast radius / "What breaks if I change X?" | ontoindex-impact-analysis |
| Trace bugs / "Why is X failing?" | ontoindex-debugging |
| Rename / extract / split / refactor | ontoindex-refactoring |
| Tools, resources, schema reference | ontoindex-guide (this file) |
| Index, status, clean, wiki CLI commands | ontoindex-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 ontoindex://repo/{name}/schema first) |
list_repos | Discover indexed repos |
Resources Reference
Lightweight reads (~100-500 tokens) for navigation:
| Resource | Content |
|---|
ontoindex://repo/{name}/context | Stats, staleness check |
ontoindex://repo/{name}/clusters | All functional areas with cohesion scores |
ontoindex://repo/{name}/cluster/{clusterName} | Area members |
ontoindex://repo/{name}/processes | All execution flows |
ontoindex://repo/{name}/process/{processName} | Step-by-step trace |
ontoindex://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
