// MCP TOOL REFERENCE

CODEGRAPH TOOLS

18 tools from the CodeGraph MCP Server, categorised by risk level.

// ALL 18 CODEGRAPH TOOLS

READ 9 tools

Read fetch_graph_data Internal companion — fetches project-scoped graph nodes and edges for the graph_explorer App UI canvas. Read get_knowledge_stats Get statistics about the knowledge graph: total entities, average relevance, low-relevance count, oldest/ne... Read get_source Read source code from a file with optional line range. Returns numbered lines. Read get_stats Get graph-wide statistics: node/edge counts by type, largest files, most connected entities. Read graph_explorer Open an interactive Graph Explorer inside the MCP client. Read ping Test connectivity to the CodeGraph MCP server Read query_knowledge Search the knowledge graph for entities. Filter by type, text content, source/provenance, Read recall Recall everything known about an entity — returns all currently-valid relationships where the entity appear... Read search_code Search for code by name or meaning. Uses vector retrieval + cross-encoder reranking.

WRITE 6 tools

Write ingest_conversation Ingest a multi-turn conversation into the knowledge graph. Runs the full episodic pipeline: Write store_entity Store an entity in the knowledge graph. Deduplicates by text+type — if an entity with the same text and typ... Write store_fact Extract entities and relationships from natural language text using an LLM, then store them in the knowledg... Write store_relationship Store a relationship between two entities in the knowledge graph. Entities are referenced by text+type and ... Write add Ingest any content into the knowledge graph. Accepts file paths (PDF, DOCX, HTML, CSV, Write resolve_entities Run on-demand entity resolution (deduplication) on the knowledge graph. Uses 3-tier matching: exact text → ...

DESTRUCTIVE 1 tools

Destructive decay_and_prune Run temporal memory maintenance: decay relevance scores for old entities and optionally prune entities belo...

EXECUTE 2 tools

Execute trigger_reindex Trigger a reindex of the codebase. Supports incremental (changed files only) or full mode. If no scope is s... Execute query_graph Run a raw Cypher query against the code graph. Use with caution - read-only queries only.

// FAQ

How many tools does the CodeGraph MCP server have? +

The CodeGraph MCP server exposes 18 tools across 4 categories: Read, Write, Destructive, Execute.

How do I enforce policies on CodeGraph tools? +

Route the CodeGraph server through the PolicyLayer gateway. Define allow, deny, or approval rules per tool in the dashboard; they are enforced on every call before it reaches the server.

What risk categories do CodeGraph tools fall into? +

CodeGraph tools are categorised as Read (9), Write (6), Destructive (1), Execute (2). Each category has a recommended default policy.

Enforce policy on every CodeGraph tool call.

Start from CodeGraph, add the rest of your stack, and see everything your agents can call. Then put policy on all of it.

CHECK YOUR STACK →

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43,000+ MCP servers and 220,000+ tools scanned and risk-classified.