How to Connect Doubao‑Seed‑Code to Claude Code in Minutes

Claude Code is a popular AI coding assistant, but its default model is unavailable in China. By adding a custom wrapper script, you can switch its backend to the domestic Doubao‑Seed‑Code model without affecting existing functionality.

Model Overview

Doubao‑Seed‑Code is ByteDance's first programming‑focused LLM, ranked first on the SWE‑Bench‑Verified leaderboard when combined with the Trae IDE. It offers strong quality, fast response, and low cost (e.g., a 9.9 CNY first‑month plan).

Switching the Backend

The original claude command still runs the Claude Sonnet 4.5 model. Adding a new claude-doubao command points Claude Code to Doubao‑Seed‑Code, allowing both commands to coexist.

Setup Steps (≈3 minutes)

Create a project directory and install Claude Code locally:

$ mkdir ~/claude-model
$ cd ~/claude-model
$ npm init -y
$ npm install @anthropic-ai/claude-code

Create a hidden configuration folder: $ mkdir .claude-doubao Add a bin directory to the PATH:

$ mkdir ~/claude-model/bin
export PATH="$HOME/claude-model/bin:$PATH"

Update ~/.bash_profile (macOS) or ~/.bashrc (Linux) accordingly.

Create the wrapper script ~/claude-model/bin/claude-doubao:

#!/usr/bin/env bash
# Wrapper for Claude Code CLI using Doubao API

CLAUDE_BIN="$HOME/claude-model/node_modules/.bin/claude"
export ANTHROPIC_AUTH_TOKEN="YOUR_DOUBAO_API_KEY"
export ANTHROPIC_BASE_URL="https://ark.cn-beijing.volces.com/api/compatible"
export ANTHROPIC_MODEL="doubao-seed-code-preview-latest"
export API_TIMEOUT_MS=3000000
export CLAUDE_CONFIG_DIR="$HOME/claude-model/.claude-doubao"
exec "$CLAUDE_BIN" "$@"

Make it executable:

$ chmod +x ~/claude-model/bin/claude-doubao

Verification

Run claude-doubao --version to confirm the wrapper works, then start Claude Code with claude-doubao to use the Doubao model.

Demo: Generating a Space Invaders Game

Create a project folder, launch Claude Code via the new command, and prompt:

Write an HTML and JavaScript page implementing space invaders

Within two‑three minutes the model outputs complete HTML/JS files that run correctly in a browser, as shown in the screenshots. The generated code is readable and requires no manual fixes.

Additional Tests

The author also generated an SVG of a pelican riding a bicycle, confirming the model’s versatility.

Conclusion

After integration, Claude Code operates smoothly with Doubao‑Seed‑Code, offering fast response and code quality comparable to the original model. The low‑price API plan (9.9 CNY/month) makes it an attractive alternative for developers in China.