API リファレンス

1curl https://devseek.space/v1/chat/completions \
2  -H "Authorization: Bearer $DEVSEEK_API_KEY" \
3  -H "Content-Type: application/json" \
4  -d '{
5    "model": "deepseek-v4.1-flash-free",
6    "stream": true,
7    "messages": [{"role": "user", "content": "Write a binary search in Rust"}]
8  }'

1import os
2from openai import OpenAI
3 
4client = OpenAI(
5    api_key=os.environ["DEVSEEK_API_KEY"],
6    base_url="https://devseek.space/v1",
7)
8 
9stream = client.chat.completions.create(
10    model="deepseek-v4.1-flash-free",
11    messages=[{"role": "user", "content": "Write a binary search in Rust"}],
12    max_tokens=4096,
13    stream=True,
14)
15for chunk in stream:
16    if chunk.choices:
17        print(chunk.choices[0].delta.content or "", end="")

1import OpenAI from "openai";
2 
3const client = new OpenAI({
4  apiKey: process.env.DEVSEEK_API_KEY,
5  baseURL: "https://devseek.space/v1",
6});
7 
8const stream = await client.chat.completions.create({
9  model: "deepseek-v4.1-flash-free",
10  messages: [{ role: "user", content: "Review this diff for bugs" }],
11  stream: true,
12});
13for await (const c of stream) process.stdout.write(c.choices[0]?.delta?.content ?? "");

1from openai import OpenAI
2client = OpenAI(api_key=KEY, base_url="https://devseek.space/v1")
3 
4tools = [{"type": "function", "function": {
5    "name": "run_tests",
6    "description": "Run the test suite and return failures",
7    "parameters": {"type": "object",
8                   "properties": {"path": {"type": "string"}},
9                   "required": ["path"]}}}]
10 
11r = client.chat.completions.create(
12    model="deepseek-v4.1-flash-free", tools=tools,
13    messages=[{"role": "user", "content": "Tests in src/ fail. Investigate."}])
14print(r.choices[0].message.tool_calls)

1# opencode.json — add devseek as an OpenAI-compatible provider
2{
3  "provider": {
4    "devseek": {
5      "npm": "@ai-sdk/openai-compatible",
6      "options": { "baseURL": "https://devseek.space/v1", "apiKey": "{env:DEVSEEK_API_KEY}" },
7      "models": { "deepseek-v4.1-flash-free": { "limit": { "context": 224000, "output": 65536 } } }
8    }
9  }
10}
11 
12# aider
13export OPENAI_API_BASE=https://devseek.space/v1 OPENAI_API_KEY=$DEVSEEK_API_KEY
14aider --model openai/deepseek-v4.1-flash-free