Jules
Jules is Google's autonomous, asynchronous AI coding agent, developed inside Google Labs and powered by the Gemini family of models (currently Gemini 2.5 Pro on the free tier and Gemini 3 Pro on paid tiers). Jules connects to a user's GitHub repositories, clones the target repo into a sandboxed Google Cloud VM, generates a multi-step plan, and then executes coding tasks such as bug fixes, refactors, dependency bumps, test authoring, and small feature builds, ultimately opening a pull request for human review. Jules ships three surfaces beyond the web app at jules.google.com: a documented REST API in alpha at jules.googleapis.com/v1alpha (Sources, Sessions, Activities) authenticated via X-Goog-Api-Key, a lightweight CLI called Jules Tools installable via npm, and a Gemini CLI extension that exposes Jules as a /jules slash command. Access is gated to Google account holders and the API is experimental. Jules is sold as part of the Google AI subscription bundles, with a free introductory plan (15 tasks/day, 3 concurrent), Google AI Pro at $19.99/month (100 tasks/day, 15 concurrent, Gemini 3 Pro), and Google AI Ultra at $124.99/month (300 tasks/day, 60 concurrent, priority Gemini 3 Pro access).
Jules publishes 1 API on the APIs.io network. Tagged areas include Artificial Intelligence, Coding Agent, Autonomous Agent, Asynchronous Agent, and Developer Tools.
Jules’ developer surface includes documentation, API reference, CLI, pricing, engineering blog, and 10 more developer resources.
APIs
Jules API
Alpha REST API for Google's Jules autonomous coding agent. Exposes Sources (connected GitHub repositories), Sessions (units of work against a source with a prompt and optional p...