[Bug] Workflow fails with "ConnectError: [invalid_argument]" & "Plan Mode" error on macOS

[m0ch]

Description
I am trying to run the CodeMachine CLI (v0.7.0) with Cursor. I have successfully installed the cursor CLI command and initialized the git repository. However, the workflow crashes immediately during the Agent initialization phase with a ConnectError and a message about "Plan mode".

Environment

• OS: macOS (Apple Silicon)
• CodeMachine Version: v0.7.0
• Cursor Version: Latest (CLI version 2.1.48)
• Subscription: Cursor Pro (Logged in)

Logs / Error Message
The CLI exits with code 1. The logs show the following error chain:

Workflow execution failed: 176 ...
Error: Cursor CLI exited with code 1
ConnectError: [invalid_argument]
Cursor Error: This is commonly related to plan mode. You may need to check if you're in plan mode to use pro models.

Note: The error persists regardless of whether the model is set to auto or hardcoded to claude-3.5-sonnet in agents-config.json.

Steps to Reproduce

1. Initialize a new project (git init).
2. Ensure cursor is in PATH (which cursor returns valid path).
3. Run CodeMachine via /start.
4. The process fails at Agent (init) or shortly after starting the pipeline.

Troubleshooting Attempted

• Verified cursor command is installed and accessible via terminal.
• Verified the folder is a git repository.
• Verified I am logged into Cursor with a Pro account.
• Tried explicitly setting "model": "claude-3.5-sonnet" in .codemachine/agents/agents-config.json to bypass the auto -> gpt-5 mapping issue.
• Tried running with the project folder explicitly opened in Cursor.

Suspected Issue
It seems like CodeMachine is passing arguments to the cursor CLI that are rejected by the current version of the Cursor gRPC server (invalid_argument), possibly related to how the "Composer" or "Agent" mode is invoked programmatically.

Full Log

[ERROR] Agent 1 (init) failed after 2044ms: Cursor CLI exited with code 1
Workflow execution failed: 176 | ').length}'),WB(Cursor runner - args count: ${h.length}, model: ${g??"auto"});let y;try{y=await ND({command:,args:h, cwd: C , env: v, stdinInput:I,onStdout:W?void 0: (DA) →{let s=0(DA). trim().split(
'); for(let c of s){if(!c.trim())continue;let i=Mk(c);if(i)R?.(i+
178 | 33, onStderr:W?void 0:(DA)→{let QA=0(DA);if(QA. includes("ConnectError: [invalid_argument]") ||QA. includes("'Error ="))M?. (°\u26A0\uFEOF Cursor Error:
This is commonly related to plan mode. You may need to check if you're in plan mode to use pro models.
');M?. (QA)},signal:N,stdioMode:W?"inherit": "pipe"
, timeout:L})}catch(DA) {let QA=DA, S=QA?. message??""; if(QA?. code= "ENOENT" || /not recognized as an inter
command/i. test(s) ||/command not found/i.test(s)){let i=${x} ${h.join(" ")}'.trim(),l=yE.installCommand,d=yE. name; throw console. error ( [ERROR
CLI not found when executing: ${i}'),Error(''${x}' is not available on this system. Please install ${d} first:
${1})}throw DA}if(y.exitCode #0){let QA=(y.stderr.trim() ||y.stdout.trim() ||"no error output").split(
181 | '), command: ${x} ${h.join(" ")} '}), Error(Cursor CLI exited with code ${y.exitCode})}return{stdout:y.stdout, stderr:y.stderr}}var Rk, E6,_4="";var D6=n(
() →{A2() ; I6() ;k4() ;Q0() ;YD() ;XE() ;Rk=new RegExp(String.raw'\u001B[[0-9;?][
-/]*[@~]',"g"),E6=new Map});var u5=n(async()→{D6();B2();await C2()});var F6=n
(async () →{I6();u5();D6()}) ;var vF,bx;var x5=n(()→{vF={AUTO: "auto", CHEETAH: "cheetah", SONNET_4_5: "sonnet-4.5", SONNET_4_5_THINKING: "sonnet-4.5-thinking", GPT_5
: "gpt-5", GPT_5_CODEX: "gpt-5-codex", OPUS_4_1:"opus-4.1", GROK:"grok"}, bx={"gpt-5-codex" :vF .GPT_5_CODEX, "gpt-4" :vF.GPT_5, "gpt-4-turbo":vF.GPT_5, "gpt-3.5-turbo" :
VF. CHEETAH, "01-preview" :vF.OPUS_4_1, "01-mini":vF.SONNET_4_5, sonnet:vF.SONNET_4_5, "claude-sonnet-4.5" :vF.SONNET_4_5, opus:v.OPUS_4_1}}) ;var b5; var h5=n(async ( ) →{k4();Q6() ;await F6();Q6();x5();F6();b5={metadata:yE, auth:B6, run: C633);var NC;var T4=n(()→{NC={id:"ccr", name: "Claude Code Router", description:"Authentica
te with Claude Code Router", cliCommand: "cor", cliBinary: "ccr", installCommand:"npm install | ...

error: Cursor CLI exited with code 1
at c6 (/$bunfs/root/runner-process.js:181:41)
at async run (/$bunfs/root/runner-process.js: 272:2227) at async N5 (/$bunfs/root/runner-process.js:114:1228)
at async b4 (/$bunfs/root/runner-process. is: 299:2259)
at async mz (/$bunfs/root/runner-process. js: 624:6766)
at async iz (/$bunfs/root/runner-process.js:645:1044)