DS2API: Turning DeepSeek into an OpenAI‑Compatible API

DS2API is a recently popular open‑source project on GitHub that transforms the DeepSeek web interface into APIs compatible with OpenAI, Claude, and Gemini.

Core Features

OpenAI compatibility: chat/completions, responses, files, embeddings

Claude compatibility: /anthropic/* and /v1/messages

Gemini compatibility: /v1beta/models/ and /v1/models/

Account pool management with concurrent slots and a waiting queue for multiple DeepSeek accounts

Long‑history handling that automatically files oversized context to stay within limits

Built‑in Proof‑of‑Work verification, implemented purely in Go

WebUI admin panel built with a React frontend

Technical Architecture

The system uses a Go backend together with a React frontend. The request flow is:

client → chi Router → PromptCompat → Chat Runtime → DeepSeek API

PromptCompat translates OpenAI/Claude/Gemini request formats into the plain‑text context format required by DeepSeek.

Quick Start

Docker deployment :

git clone https://github.com/CJackHwang/ds2api.git
cd ds2api
docker-compose up -d

Configuration : copy the example config and fill in your DeepSeek account credentials. cp config.example.json config.json Usage : after starting the service, open http://localhost:8080/admin for the management UI, or call the API directly with an OpenAI‑compatible SDK. Example in Python:

from openai import OpenAI
client = OpenAI(api_key="your-api-key", base_url="http://localhost:8080/v1")
response = client.chat.completions.create(
    model="deepseek-chat",
    messages=[{"role": "user", "content": "Hello!"}]
)

Applicable Scenarios

Developers needing OpenAI/Claude‑style interfaces to call DeepSeek

Existing applications that want to switch to a DeepSeek backend quickly

Testing and development environments

Disclaimer : the project is intended for learning and research only and must not be used in ways that violate service terms.

GitHub: https://github.com/CJackHwang/ds2api<br/>Stars: 2,477<br/>Language: Go