Cursor Sandbox Blocks .git* File Access — uv run Fails with Git Operation Error

What this error means

Cursor sandbox blocks all access to files matching .git* patterns — uv run fails because uv recreates .git marker files every time is a Cursor failure pattern reported for developers trying to fix cursor sandbox blocking uv run commands due to .git* file pattern restrictions. Based on the imported evidence, treat this as a tool-specific troubleshooting page rather than a generic API error.

Why this happens

The Cursor sandbox blocks all access to files matching .git* patterns, treating them as git operations. uv recreates .git marker files every time it runs, causing consistent failures. Removing the files doesn’t work because uv recreates them. This is a Cursor sandbox design issue, not a uv bug.

Common causes

• Cursor’s sandbox mode treats .git* file access as git operations and blocks them. Python developers using uv (fast package manager) find that uv recreates .git marker files on every run, causing repeated failures. This is a sandbox design conflict with legitimate development workflows.
• The Cursor sandbox blocks all access to files matching .git* patterns, treating them as git operations. uv recreates .git marker files every time it runs, causing consistent failures. Removing the files doesn’t work because uv recreates them. This is a Cursor sandbox design issue, not a uv bug.

Quick fixes

1. Confirm the exact error signature matches Cursor sandbox blocks all access to files matching .git* patterns — uv run fails because uv recreates .git marker files every time.
2. Check the Cursor account, local tool state, and provider configuration involved in the failing workflow.
3. Compare the failing environment with a known working setup, then change one configuration value at a time.

Platform/tool-specific checks

• Verify the command, editor, extension, or API client that produced the error.
• Compare local settings with CI, deployment, or editor-level settings when the error appears in only one environment.
• Avoid deleting credentials, local model data, or project settings until the failing scope is clear.

Step-by-step troubleshooting

1. Capture the exact error message and the command, editor action, or request that triggered it.
2. Check whether the failure is account/auth, quota/rate, model/provider, local runtime, or deployment configuration.
3. Review the source evidence below and compare it with your environment.
4. Apply one change at a time and rerun the smallest failing action.
5. Keep the working fix documented for the team or deployment environment.

How to prevent it

• Keep provider/tool configuration documented.
• Record non-secret diagnostics such as tool version, provider name, model name, and command path.
• Add a lightweight check before CI or production workflows depend on the tool.

Sources checked

• https://gist.github.com/nimobeeren/f7e62ca517c2d76561be958d5602fa77

Evidence note: The Cursor sandbox blocks all access to files matching .git* patterns, treating them as git operations. uv recreates .git marker files every time it runs, causing consistent failures. Removing the files doesn’t work because uv recreates them. This is a Cursor sandbox design issue, not a uv bug.

Related errors

• Cursor sandbox permission denied
• Cursor fatal sandbox error on initialization
• Cursor agent mode git operation blocked

FAQ

What should I check first?

Start with the exact Cursor sandbox blocks all access to files matching .git* patterns — uv run fails because uv recreates .git marker files every time text and the smallest action that reproduces it.

Can I ignore this error?

No. Treat it as a failed Cursor workflow until the root cause is understood.

Is this guaranteed to have one fix?

No. The imported evidence supports the troubleshooting path above, but tool behavior can vary by account, plan, version, provider, and local configuration.

How do I know the fix worked?

Rerun the same command, editor action, or request. The fix is working when that action completes without Cursor sandbox blocks all access to files matching .git* patterns — uv run fails because uv recreates .git marker files every time.