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ContextGraph

Semantic code search, long-term memory, and blast radius analysis for AI coding agents.

ContextGraph gives Claude Code and Cursor a persistent understanding of your codebase — so you spend less time re-explaining context and more time shipping.

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How it works

1. Index your project once (cograph index) — ContextGraph parses TypeScript, JavaScript, Python, and Markdown into a local SQLite database with embeddings and a dependency graph.
2. Connect your editor — Claude Code and Cursor call MCP tools (search_context, analyze_impact, etc.) automatically as you work.
3. Remember — learnings and checkpoints persist across sessions so the agent picks up where you left off.

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Pages

Page	What's covered
Installation	Installing cograph globally with Bun
Claude Code Setup	Registering MCP servers for Claude Code (stdio)
Cursor Setup	Running HTTP servers for Cursor
Indexing	How indexing works, what gets parsed, re-indexing
Memory and Checkpoints	Saving learnings and session snapshots
Blast Radius	Dependency impact analysis before editing shared files
Embedding Backends	Local (default), Ollama, OpenAI
CLI Reference	All cograph commands and flags
Troubleshooting	Common issues and fixes

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Quick start

# Install
bun install -g @loosilo/contextgraph-cli

# Register with Claude Code
cograph register

# Index your project
cograph index /path/to/your/project

Open a new Claude Code session — the MCP tools are ready.

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Packages

Package	Description
@loosilo/contextgraph-cli	The cograph CLI
@loosilo/contextgraph-mcp	MCP server — search, memory, checkpoints
@loosilo/blastradius-mcp	MCP server — dependency impact analysis
@loosilo/contextgraph-core	Core library (indexing, embeddings, graph)