ai-agent

AIClient2API: Unified AI API

Name: AIClient2API: Unified AI API
Author: justlovemaki

Get a single API for multiple AI providers with AIClient2API, used by 8.5k+ GitHub stars. Ideal for founders seeking streamlined AI integration.

8,518 stars1,338 forksJavaScriptGuide quality 8/10Updated 7/24/2026100% free · open source

What it does

AIClient2API acts as a self-hosted proxy to manage and route requests to multiple AI providers, including OpenAI, Claude, and custom providers, with features like smart routing and automatic failover.

When to use it

•When you need to integrate multiple AI providers into your application
•When you require more control over the routing and failover of AI requests
•When you want to convert between different AI protocols, such as Gemini and OpenAI-compatible API

Ready-to-paste prompt

curl -X POST -H "Content-Type: application/json" -d "{"model": "gpt-3.5-turbo", "prompt": "Write a short story about a character who discovers a hidden world."}" http://localhost:3000/v1/completions

Heads up: Make sure you have a valid API key for the desired AI providers, such as OpenAI, and that you have installed the required dependencies, including Node.js 16 or higher, as specified in the README

Saves to your device

Use with Claude

New

Skip the builder — one click puts this in Claude, Cursor, Antigravity and more.

🛠️ Technical setup

Expect 20–40 minutes in a terminal — or let your AI agent drive it.

Try it instantly — no install

Claude Code

mkdir -p ~/.claude/skills/aiclient2api && curl -fsSL https://workflowstacks.com/api/skills/aiclient2api/claude-skill -o ~/.claude/skills/aiclient2api/SKILL.md

Open in another AI app

Opens the app with this repo with the prompt ready to go — no copy-paste needed.

Connect the whole catalog (MCP)

claude mcp add --transport http workflowstacks https://workflowstacks.com/api/mcp

Adds a WorkflowStacks connector to Claude Code: search and load any skill here by chatting.

How AIClient2API: Unified AI API works

Codeflow

Free to inspect

AIClient2API: Unified AI API is a very large JavaScript project (~89k lines across 134 code files, plus 2 test files). It is a full software project: use it through its install path rather than reading it end to end. Last commit this month, GPL-3.0 license, has a test suite.

Size

Very large codebase

~89k lines · 134 code files · days to read — use, don't read

Setup

Developer setup

A real software project. Use it via its install path; don't expect to read it all.

Runs on

Node.js · Docker

No API keys detected

JavaScript 86%HTML 7%CSS 7%

Where to start reading

1
README.md
Start here — what it does and how to install it
2
tls-sidecar/main.go
Where the program starts running
3
package.json
Dependencies and the commands it exposes
4
src/auth/index.js
Inside src/ — the main logic begins here

What's in each folder

src/Core code — the actual logic125 files

docs/Documentation6 files

configs/Configuration9 files

docker/Deployment / infrastructure4 files

tls-sidecar/Folder3 files

static/Images & static assets80 files

.github/CI / automation (GitHub Actions)2 files

tests/Tests — proof it works2 files

READMEHas testsDocumentedCI checksDocker readyGPL-3.0 licenseUpdated this month

Use with Claude

New

Skip the builder — one click puts this in Claude, Cursor, Antigravity and more.

🛠️ Technical setup

Expect 20–40 minutes in a terminal — or let your AI agent drive it.

Try it instantly — no install

Claude Code

mkdir -p ~/.claude/skills/aiclient2api && curl -fsSL https://workflowstacks.com/api/skills/aiclient2api/claude-skill -o ~/.claude/skills/aiclient2api/SKILL.md

Open in another AI app

Opens the app with this repo with the prompt ready to go — no copy-paste needed.

Connect the whole catalog (MCP)

claude mcp add --transport http workflowstacks https://workflowstacks.com/api/mcp

Adds a WorkflowStacks connector to Claude Code: search and load any skill here by chatting.

Quick Actions

Details

Creator

justlovemaki

Language

JavaScript