Semantic vector search over the codebase — find code by meaning, not exact names. Use when you need to locate implementations without knowing exact function/class names. Triggers on: "find code", "search codebase", "locate implementation", "what does X do"
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Run score Not tested
See how to installReview the instructions the agent will receive before you install.
Finds code by meaning using local vector embeddings (no API key, works offline). Complement to codebase-memory-mcp (structural) — use both for complete discovery.
| Use cocoindex-code | Use codebase-memory-mcp instead |
|---|---|
| "find code that handles rate limiting" | "who calls rateLimit()?" |
| "locate authentication middleware" | "what does AuthService import?" |
| "find all error handling patterns" | "trace path from HTTP handler to DB" |
| Exploring unfamiliar codebase | Tracing known functions |
| Fuzzy conceptual search | Exact structural traversal |
search{
"query": "string — natural language or code snippet",
"limit": 5,
"offset": 0,
"refresh_index": true,
"languages": ["python", "typescript"],
"paths": ["src/auth/*"]
}
Result: Array of {file_path, language, content, start_line, end_line, score}.
After getting results: Use the Read tool on file_path at start_line–end_line for full context.
refresh_index: false for consecutive searches in the same session (no code changes)languages filter to scope search (faster for single-language queries)paths filter to limit to a directory (triggers full scan — slower than language filter)Index not built yet: ccc index — or handled automatically on first MCP search.
After major changes: Index auto-refreshes on each MCP search call (refresh_index=True default).
Check status: ccc status shows chunks and file counts.
Switch embedding model: Edit ~/.cocoindex_code/global_settings.yml, then ccc reset && ccc index.
Warning: model switch requires full re-index — different vector dimensions are incompatible.
Python, JavaScript, TypeScript/TSX/JSX, Rust, Go, Java, C, C++, C#, SQL, Shell/Bash, Markdown, PHP, Lua, Ruby, Swift, Kotlin, Scala, R, HTML, CSS/SCSS, JSON, YAML/TOML, XML, Solidity, Pascal, Fortran, plain text.
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Route a codebase question to the right tool — structural graph, semantic search, or risk analysis. Use when you need to find or understand code without knowing exact file names.
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Auto-configure CLAUDE.md and claude/ knowledge docs for a new project. Use when setting up Brain Bootstrap in a new repository. Discovers the codebase, fills in templates, and writes project-specific configuration.
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Use before any new feature, component, or behavioral change — when you need to explore requirements and design before writing code
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Activate safety guards for the session. Use /careful before critical operations — blocks rm -rf, DROP TABLE, git push --force, kubectl delete namespace, docker system prune via PreToolUse hook.
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Generate a user-facing changelog from git commits — categorize, filter noise, translate to user language. Runs in isolated fork context.
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Save session state before context gets full or before ending. Writes current task state, branch, and loaded docs to claude/tasks/todo.md so the next session can resume cleanly.
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