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Add manual callback input to MCP OAuth login - #44629
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## Why Allow MCP authentication to complete when the browser cannot reach the callback page by accepting the full redirect URL copied from its address bar. ## What changed - Add `codex mcp login--no-browser` to print the authorization URL and accept a pasted callback without launching a browser. HTTP callbacks remain supported while waiting for input. - Validate pasted redirect URLs and OAuth responses before exchanging tokens, hide terminal input, bound input size, and avoid echoing callback values in diagnostics. - Preserve manual input across discovered-scope retries and support cancellation during callback input and token exchange. ## Testing Add unit and CLI integration tests for callback validation, bounded input, credential storage, HTTP callback completion with stdin open, scope retries, and cancellation during token exchange. GitOrigin-RevId: 16ea9c3221f72d93e6e3e5acdc6b9465293a0a65
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Add manual callback input to MCP OAuth login
Why
Allow MCP authentication to complete when the browser cannot reach the callback page by accepting the full redirect URL copied from its address bar.
What changed
codex mcp login --no-browser to print the authorization URL and accept a pasted callback without launching a browser. HTTP callbacks remain supported while waiting for input.Testing
Add unit and CLI integration tests for callback validation, bounded input, credential storage, HTTP callback completion with stdin open, scope retries, and cancellation during token exchange.