# Jules

**Canonical:** https://apis.io/providers/jules-google/  
**Website:** https://jules.google  
**APIs profiled:** 1

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).

## Kin Score — 18.4 / 100 (emerging)

Scored 2026-08-25 under rubric 0.14.0. Trend: flat (+0.0 from 18.4).

| Facet | Score |
|---|---|
| Discoverability | 68.5 |
| Contract Quality | 0.0 |
| Governance | 0.0 |
| Contract Governance | 0.0 |
| Operational Transparency | 0.0 |
| Developer Ergonomics | 26.2 |
| Commercial Clarity | 31.6 |
| Access Clarity | 31.6 |

## Agent readiness — 0.0 (human-only)

| Dimension | Value |
|---|---|
| Spec Presence | no |
| Agentic Access | no |
| Reversibility Documented | no |
| MCP Server | no |
| Auth Clarity | no |
| Idempotency | no |
| Error Semantics | no |
| OpenAPI Examples | no |
| Rate Limit Signal | no |
| Event Surface Described | no |
| Agent Skills | no |
| Well Known Catalog | no |
| Consent Identity | no |
| Agent Card | no |
| Dry Run Mode | no |
| Delegated Identity | no |
| Protected Resource Metadata | no |
| Dynamic Client Registration | no |
| Agentic Commerce | no |

## Access

Unknown — onboarding: unknown, pricing: unknown, trial: no (confidence: low).

## APIs (1)

- **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...

## Security (1)

- **Jules Google Domain Security** — TLSv1.3 · HSTS · DMARC

## Tags

Artificial Intelligence, Coding Agents, Autonomous Agent, Asynchronous Agent, Developer Tools, Code Generation, Pull Requests, GitHub, Gemini, Google Labs, Software Development Lifecycle, DevOps

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Profiled by [API Evangelist](https://apievangelist.com) and published on [APIs.io](https://apis.io/providers/jules-google/). Scores are computed from the provider's own public artifacts under a published rubric.