CatGPT-Gateway: Turn your ChatGPT or Claude account into a fully working OpenAI-compatible API

by GautamVhavle · Agent Tool · ★ 278

Last updated: · Indexed by AgentSkillsHub · Auto-synced every 8h

How to install CatGPT-Gateway

git clone https://github.com/GautamVhavle/CatGPT-Gateway.git

Taken from the project's README on GitHub.

Security audit verdict: SAFE · quality 74/100

None of the 42 rules matched — no credential harvesting, no data exfiltration, no curl-pipe-shell installer. Scanned against 42 published rules built on the SlowMist agent-security taxonomy, refreshed every 8 hours.

The quality score combines nine heuristic checks of the repo and its README: completeness, clarity, specificity, examples, structure, agent readiness, step-by-step content, instruction quality and security notes. It rates how well the project explains itself to an agent, not the code.

aianthropicapi-gatewaybrowser-automationchatbotchatgptclaudedall-edockerfastapi

Quick Facts

Stars278
Forks58
LanguagePython
CategoryAgent Tool
LicenseMIT
Quality Score74/100
Open Issues8
Last Updated2026-09-14
Created2026-02-17
Platformsbrowser, claude-code, docker, python
Est. Tokens~16k

About CatGPT-Gateway

CatGPT Gateway Turn your ChatGPT or Claude account into a fully working OpenAI-compatible API. No API keys needed. Just your browser login. Quick Start • Providers • API Docs • Full Setup Guide • How It Works • Contributing What is this? You already pay for ChatGPT Plus or have a free Claude account. But the official APIs cost extra and the free tiers are limited.

Compatible Skills

These tools work well together with CatGPT-Gateway for enhanced workflows:

  • agent-cli-to-api — semantic(0.31)+complementary+shared_fw(openai)+rare_topics+same_lang+similar_pop+shared_platform (68%)
  • NadirClaw — semantic(0.18)+complementary+shared_fw(openai)+same_lang+similar_pop+shared_platform (64%)
  • llm-use — semantic(0.17)+complementary+shared_fw(openai)+rare_topics+same_lang+similar_pop+shared_platform (64%)

CatGPT-Gateway alternative? Top 6 similar tools

Looking for a CatGPT-Gateway alternative? If you're comparing CatGPT-Gateway with other agent tool tools, these 6 projects are the closest alternatives on Agent Skills Hub — ranked by topic overlap, star count, and community traction.

  • c4-genai-suite by codecentric · ⭐ 174

    [archived] c4 GenAI Suite

  • ha-claude by Bobsilvio · ⭐ 86

    Home Assistant add-on: Claude Code, OpenAI/GPT, Gemini

  • open-assistant-api by MLT-OSS · ⭐ 367

    The Open Assistant API is a ready-to-use, open-source, self-hosted agent/gpts orchestration creation framework

  • repopack-py by abinthomasonline · ⭐ 122

    Python version of 📦 repopack (https://github.com/yamadashy/repopack) by yamadashy (https://github.com/yamadas

  • anthropic-max-router by nsxdavid · ⭐ 63

    Dual API router (Anthropic + OpenAI compatible) for Claude MAX Plan - Use flat-rate billing with ANY AI too

  • llm-use by llm-use · ⭐ 59

    LLM orchestration toolkit for agent workflows: planner + workers + synthesis, optional router (LLM + learned

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How this security grade is produced

Grades come from a rule-based scan built on the SlowMist agent-security taxonomy: 42 published rules, covering credential harvesting, data exfiltration, curl | sh installers and more. It is a first-layer scan, not a manual audit — we say so rather than overstate it.

The scale of the problem is documented independently: Liu et al. (2026), in a study of 31,132 agent skills, report that 26.1% contain security vulnerabilities. Our own full-catalog census is published as a citable open dataset.

Sources & who's responsible:

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