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Pedro RodriguesandClaude Sonnet 4.6 8349ae5fce fix: remove invalid Codex MCP config from connect sheet and docs (#46230)
## Summary

Two surfaces were showing invalid Codex config keys that don't exist in
Codex's schema (which uses `additionalProperties: false`), causing
validation errors for users who followed the setup steps.

- **Studio Connect Sheet** (`connect.schema.ts`): removes the "Enable
remote MCP client support" step, which told users to add
`[mcp]\nremote_mcp_client_enabled = true` to `~/.codex/config.toml`.
Deletes the dead content component and updates tests.
- **Docs MCP panel** (`ui-patterns/McpUrlBuilder/constants.tsx`):
removes the `[features]\nrmcp_client = true` config block from the Codex
`alternateInstructions`. Keeps the valid authenticate (`codex mcp login
supabase`) and verify (`/mcp`) steps.

Closes
[AI-548](https://linear.app/supabase/issue/AI-548/bug-studio-mcp-connect-flow-shows-invalid-codex-config-guidance)
Fixes #43893

## Root cause

Both invalid keys were introduced in #42374 (Feb 2026). A full search
through the [`openai/codex`](https://github.com/openai/codex) git
history confirms neither `remote_mcp_client_enabled` nor `rmcp_client`
ever existed in any version of the codebase (neither the TypeScript CLI
nor the Rust rewrite).

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Co-authored-by: Claude Sonnet 4.6 <noreply@anthropic.com>
2026-05-21 22:50:34 +02:00
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