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Gemini Web To API

Gemini Web To API is a Go-based, self-hosted REST service that connects to Gemini’s web interface using browser-session cookies and exposes compatible API endpoints for client applications.

Explore the practical guide ↓

Independent OpenViST project profile, based on linked sources.

Gemini Web To API — OpenViST project profile in AI APIs & Platforms.
OpenViST project illustration. See the linked sources for product details.
Understand the project

Practical overview

When it fits

Use it when you need a self-hosted REST gateway to Gemini’s web interface and can configure and protect the required browser-session cookies.

Who it is for

  • Developers who want to route application prompts to Gemini through a REST interface.
  • Teams or individual builders working with clients that expect OpenAI-, Claude- or Gemini-compatible API formats.
  • Developers exploring a self-hosted Gemini integration without using a Gemini API key.

Documented uses

  • Send prompts to Gemini through a local or self-hosted API server.
  • Connect API clients to Gemini using a supported compatibility format.
  • List model IDs discovered from the signed-in Gemini account’s web model registry.
Before you choose

Requirements & limits

The service requires a complete Cookie request header from a signed-in Gemini web session. Docker and Docker Compose are documented options; direct execution requires Go 1.21 or later. The project is MIT-licensed.

  • Authentication depends on Gemini web-session cookies rather than a Gemini API key.
  • The project is reverse-engineered, is not affiliated with Google, and cautions that its method may not comply with Google’s terms.
  • The README describes the project as intended for research and education and discourages commercial use.
  • Model IDs are discovered from the account’s current Gemini web model registry and may change.

Check current requirements in the official documentation. Source-based guidance does not mean OpenViST has run or independently tested this project.

Source-based practical guide

Run the service with Docker and a Gemini session

Start the documented Docker container with cookies from a signed-in Gemini web session.

Before you start

  • Docker
  • A signed-in Gemini web session
  • The complete Cookie request header from a batchexecute?rpcids=otAQ7b network request

Steps

  1. Sign in to Gemini, open browser developer tools to Network, reload Gemini, and select a batchexecute?rpcids=otAQ7b request.

  2. Copy its complete Cookie request header; if its URL includes an account slot such as /u/2/, note the matching slot value.

  3. Run the documented Docker command, setting GEMINI_COOKIES to the cookie header and GEMINI_AUTH_USER to the matching slot when applicable.

Expected outcome

The documented container starts the API server on port 4981.

Guide limitations

  • Cookies provide access to the associated Google account and must be kept private.
  • The project uses reverse-engineered web cookies, is not affiliated with Google, and notes that this approach may not comply with Google’s terms.
Documentation 1 ↗
Evidence and transparency

Sources & review

Official repository ↗
Source record details
Source availability
Active
Sources checked
14 October 2026
Original website title
ntthanh2603/gemini-web-to-api · Official homepage title · retained in its source language
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