pi-extension-featherless

Pi extension that dynamically fetches all available models from Featherless.ai and registers them as an OpenAI-compatible provider.

TypeScript · pi Extension API

Getting started

Requires FEATHERLESS_API_KEY set in the environment.

Install from remote

pi install git:github.com/Mearman/pi-extension-featherless

Try without installing

pi -e git:github.com/Mearman/pi-extension-featherless

Run from a local clone

pi -e /path/to/pi-extension-featherless

No dependencies to install — the extension runs directly from index.ts via pi's extension loader.

Architecture

Single entry point (index.ts) that:

1. Fetches https://api.featherless.ai/v1/models at load time and maps every returned model to pi's provider model schema.
2. Registers a "featherless" provider with OpenAI-completions API compatibility.
3. Intercepts message_end events to rewrite Featherless-specific context overflow error messages into the context_length_exceeded pattern pi recognises.

All models are free-tier (cost: { input: 0, output: 0 }). Context window and max completion tokens are sourced from the API response.

Conventions

• No build step — pi loads the extension directly from TypeScript.
• The clean, build, and check scripts are placeholders and do nothing.