pi-gortex

A Pi extension that gives the agent Gortex's code-graph tools, and applies Gortex's read-discipline decisions to Pi's own tools.

What is Gortex?

A code-intelligence engine that indexes your repositories into a queryable knowledge graph of functions, classes, call chains, routes and cross-service contracts, and serves it over MCP. Agents look up exactly the symbol they need instead of reading whole files around it, which is where the token savings come from. It is a single static binary with no dependency chain, and it covers 257 languages through tree-sitter.

Pi has no MCP support by design, so this extension is the bridge.

What it does

• Registers Gortex's graph tools as native Pi tools, over a persistent gortex mcp child per session. The deferred catalogue is reached through the daemon's own tools_search, and promoted tools appear in Pi's registry.
• Applies read discipline. Pi's tool calls are forwarded to gortex hook --agent=pi, which answers block / soft guidance / nothing according to the posture you configured. Gortex owns that logic, so the behaviour matches every other agent it integrates with.
• Briefs the model once per session with Gortex's orientation for the current repository.

See docs/architecture.md for how it works.

Requirements

• Node 24+, Pi 0.85+
• The gortex binary on PATH, v0.61.2 or newer. See Gortex installation. The extension starts the shared daemon itself and never blocks Pi's startup on it, and warns you at session start when the binary is older than that. Run gortex upgrade to fix it.

Install

Add it to Pi's settings, ~/.pi/agent/settings.json for every project or <project>/.pi/settings.json for one:

{
  "packages": ["npm:pi-gortex"]
}

Leave the spec unpinned: Pi skips pinned specs during pi update.

For local development, point Pi at a checkout instead: a packages entry with the absolute path, or a single run with pi -e /path/to/pi-gortex.

Configure

Zero configuration required. Every value resolves at runtime, first hit wins: environment -> <cwd>/.pi/gortex.json -> <agent dir>/extensions/gortex.json (agent dir is $PI_CODING_AGENT_DIR, else ~/.pi/agent) -> defaults.

{
  "bin": "/usr/local/bin/gortex",
  "hook_mode": "enrich",
  "enforce": true
}

If the graph tools go missing, the first turn of the session says so and names /reload as the retry. The bridge fails open, always: an absent binary or a daemon that is down costs the session its graph tools, never the session.

Develop

npm install
npm test         # node --test
npm run typecheck
npm run check    # both

Zero runtime dependencies. Pi's extension loader resolves Pi's own packages to the running Pi, so they are imported freely and kept in devDependencies, and the package also loads as a bare directory extension with no node_modules beside it.

The suites drive the extension through Pi's own ExtensionRunner; docs/tests.md explains the approach and the rules a suite follows.

License

Apache License 2.0, the same license as gortex itself.