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Last updated: 2026-06-06

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Overview

Claude Dev is a VS Code AI coding extension suited for Claude-style code explanation, refactoring suggestions, and multi-turn collaboration through Crazyrouter. For public docs, prefer the OpenAI Compatible route first because it is more consistent with the rest of the Crazyrouter integration stack and easier to troubleshoot.
The https://api.crazyrouter.com/v1 URL on this page applies only to Claude Dev’s OpenAI Compatible provider. Do not copy it into Claude Code’s ANTHROPIC_BASE_URL; Claude Code should use the root domain https://api.crazyrouter.com.
1

Install Extension

Search for Claude Dev in the VS Code extension marketplace and install it.
2

Open Settings

Click the Claude Dev icon in the sidebar to enter settings.
3

Select Provider

Prefer OpenAI Compatible as the API provider.
4

Enter Configuration

  • Base URL: https://api.crazyrouter.com/v1
  • API Key: sk-xxx
  • Model: claude-opus-4-8
For the default international API entry, set Claude Dev’s OpenAI Compatible Base URL to https://api.crazyrouter.com/v1.
ScenarioModel
Daily codingclaude-opus-4-8
Heavier reasoning and planningclaude-opus-4-8
claude-opus-4-8 and claude-opus-4-8 match the latest verified Claude model guidance in this doc set. For the smallest first-pass VS Code validation, start with claude-opus-4-8.