ACP (Agent Client Protocol) implementation in the Roo Code CLI

[cte]

https://agentclientprotocol.com/overview/introduction

To run locally edit your zed settings (making sure to replace PATH_TO_ROO_CODE_REPO):

"agent_servers": {
  "Roo Code CLI": {
    "type": "custom",
    "command": "node",
    "args": [
      "[PATH_TO_ROO_CODE_REPO]/apps/cli/dist/index.js",
      "acp",
      "--provider",
      "openrouter",
      "--model",
      "anthropic/claude-4.5-sonnet",
    ],
  },
}

This can be done by opening the GUI settings and then clicking the button on the top right:

Then, build the extension host and cli:

pnpm --filter roo-cline bundle && \
  pnpm --filter @roo-code/cli build

Then, add an OpenRouter API key to your shell's config (in my case I used ~/.zprofile):

export OPENROUTER_API_KEY=sk-or-v1-...

And finally, in zed, open up the right dock, click the plus sign and select Roo Code CLI:

I:

If you want some friendly debugging, open up the ACP logs in zed:

Then kick off a task:

[roomote]

Rooviewer   See task on Roo Cloud

Reviewed commit 9c9220a (release v0.0.46). All previous issues remain resolved. No new issues found.

• agent.ts:183 - Model default inconsistency: hardcoded fallback differs from DEFAULT_FLAGS.model
• agent.ts:226 - Model ID mismatch: getModelState() defaults to DEFAULT_MODELS[0]!.modelId while session model defaults to DEFAULT_FLAGS.model
• types.ts:63-64 - Mismatched model name: first entry in DEFAULT_MODELS now uses DEFAULT_FLAGS.model (opus) but name/description still say "Claude Sonnet 4.5"

Previous reviews

• 22288a2: Review #1
• 7b01039: Review #2
• 1150158: Review #3
• 1b867d5: Review #4
• 1991eb6: Review #5
• 510cf8f: Review #6
• 4b4afce: Review #7
• 4ac8a46: Review #8
• e92a0fc: Review #9
• 4b43a0d: Review #10
• 74881a4: Review #11
• 89f26ac: Review #12
• 844de64: Review #13
• 22fa95f: Review #14
• e6b1d20: Review #15
• 4ccca5b: Review #16

_{Mention @roomote in a comment to request specific changes to this pull request or fix all unresolved issues.}

[mrubens]

I think I merged a change to default to opus fyi

[cte]

@roomote Please fix.

[roomote]

Fixaroo   See task on Roo Cloud

Fixed the reported issues. Changed default model to opus and fixed model ID mismatch in getModelState().

_{View commit | Revert commit}

[roomote]

Model ID mismatch: this defaults to DEFAULT_MODELS[0]!.modelId ("anthropic/claude-sonnet-4.5") while the session model at line 179 defaults to DEFAULT_FLAGS.model ("anthropic/claude-4.5-sonnet"). These are different model IDs, causing the model picker to display a different model than what the session actually uses when no model is specified.

Suggested change

	const currentModelId = this.options.model || DEFAULT_MODELS[0]!.modelId
	const currentModelId = this.options.model || DEFAULT_FLAGS.model

_{Fix it with Roo Code or mention @roomote and request a fix.}

[cte]

@roomote Please fix. Let's make sure the source of truth for the default model is DEFAULT_FLAGS.model and DEFAULT_MODELS should probably read from that.

[roomote]

Fixaroo   See task on Roo Cloud

Fixed the model ID mismatch by using DEFAULT_FLAGS.model as the single source of truth. All local checks passed.

_{View commit | Revert commit}

[roomote]

The model name and description no longer match the actual model. Since DEFAULT_FLAGS.model is now "anthropic/claude-opus-4.5", the name should be "Claude Opus 4.5" and the description should reflect Opus capabilities. Additionally, this creates a duplicate entry since the second model in the array is also claude-opus-4.5 with the correct name.

Suggested change

	name: "Claude Sonnet 4.5",
	description: "Best balance of speed and capability",
	name: "Claude Opus 4.5",
	description: "Most capable for complex work",

_{Fix it with Roo Code or mention @roomote and request a fix.}