[FEATURE]: Local Claude Code CLI Provider

[dkraemerwork]

Feature hasn't been suggested before.

• I have verified this feature I'm about to request hasn't been suggested before.

If this feature is desired I can create a pull request. Its already implemented

Describe the enhancement you want to request

Summary:

Add support for using Claude Code CLI as a backend provider in OpenCode, allowing users to leverage their local Claude CLI installation directly within OpenCode's interface.

Motivation

• Users with Claude Code CLI installed can use it through OpenCode without needing separate API keys
• Enables access to Claude's full agentic capabilities (tool use, file editing, bash execution) via OpenCode's UI
• Provides a bridge for users who prefer OpenCode's interface but want to use their existing Claude CLI setup

Configuration

Provider should be configurable via OpenCode config with options for:

• CLI path (cliPath)
• Working directory (cwd)
• Permission mode
• Tool routing preferences (handleToolsInOpenCode)
  Dependencies
• Requires Claude Code CLI installed locally (claude command available)

Requirements

• Implement LanguageModelV2 provider that spawns and communicates with Claude CLI
• Support JSON streaming protocol for real-time responses
• Handle tool call routing between Claude CLI and OpenCode
• Map tool names between Claude CLI (PascalCase) and OpenCode (lowercase)
• Support permission handling modes (default, acceptEdits, bypassPermissions, plan)
• Enable session persistence across messages
• Support multimodal input (images, PDFs)
• Handle AskUserQuestion tool for interactive prompts
• Properly communicate tool errors back to Claude for recovery
• Manage child processes efficiently (reuse, cleanup)

This is how it looks:

[github-actions]

This issue might be related to existing feature requests and discussions:

• [FEATURE]: Claude-style Tool Search Tool Implementation in OpenCode #9461: [FEATURE]: Claude-style Tool Search Tool Implementation in OpenCode - Discusses integrating Claude Code features into OpenCode
• [FEATURE]: enable responses API in openai compatible provider #9628: [FEATURE]: enable responses API in openai compatible provider - Related to provider configuration flexibility
• [FEATURE]: Merged commands and skills, parity with claude-code #9499: [FEATURE]: Merged commands and skills, parity with claude-code - Discusses achieving parity with Claude Code features
• [FEATURE]: model fallback in specific agents #9575: [FEATURE]: model fallback in specific agents - Related to model/provider configuration

Please review these issues to see if they address your specific use case or if this represents a distinct feature request for local Claude CLI integration.

[dkraemerwork]

This issue might be related to existing feature requests and discussions:

• [FEATURE]: Claude-style Tool Search Tool Implementation in OpenCode #9461: [FEATURE]: Claude-style Tool Search Tool Implementation in OpenCode - Discusses integrating Claude Code features into OpenCode
• [FEATURE]: enable responses API in openai compatible provider #9628: [FEATURE]: enable responses API in openai compatible provider - Related to provider configuration flexibility
• [FEATURE]: Merged commands and skills, parity with claude-code #9499: [FEATURE]: Merged commands and skills, parity with claude-code - Discusses achieving parity with Claude Code features
• [FEATURE]: model fallback in specific agents #9575: [FEATURE]: model fallback in specific agents - Related to model/provider configuration

Please review these issues to see if they address your specific use case or if this represents a distinct feature request for local Claude CLI integration.

None of these implement this feature

[dkraemerwork]

As mentioned by @rekram1-node in the PR #10097 I will close this issue and create a plugin for that.

[strudel333]

Looks like a good solution, did you create a plugin?

[dkraemerwork]

Looks like a good solution, did you create a plugin?

Yes and no
I did locally, but opencode doesnt provide way to introduce custom language model implementations via plugins. I think it will take a while, if at all this will be there in the future. So for now if you wanna use it you need to pull my branch from my fork and just run it locally.

[strudel333]

Cool, will do. Thanks for doing this. Sorry they didnt take the PR

[dkraemerwork]

Cool, will do. Thanks for doing this. Sorry they didnt take the PR

Yeah no problem.
Btw i just found out that anthropic walked back and the native 'opencode auth login' with max subscription works again. Probably still against TOS but atleast it works again natively

[broskees]

@dkraemerwork where did you hear that?