🧭 fix: Reduce MCP Registry ACL Lookups

[danny-avila]

Summary

I reduced redundant ACL principal resolution in the MCP registry DB lookup path and moved MCP-related Agent queries behind data-schemas methods.

• Reused resolved principals across direct MCP server and agent-accessible MCP server lookups in ServerConfigsDB.getAll.
• Added data-schemas Agent methods for MCP server-name lookups so packages/api no longer calls the Agent model directly for this flow.
• Passed the request user role through MCP registry callers to avoid an extra user role lookup when resolving ACL principals.
• Updated MCP service and registry tests to cover the optimized path and the role-aware call.

Change Type

• Bug fix (non-breaking change which fixes an issue)

Testing

• cd packages/api && npx jest src/mcp/registry/__tests__/ServerConfigsDB.test.ts --runInBand
• cd api && npx jest server/services/__tests__/MCP.spec.js --runInBand
• npm run build --workspace=@librechat/api

Test Configuration:

• Node/Jest workspace test runs from the local LibreChat checkout.
• The package build completes with existing unrelated warnings for missing optional telemetry/metrics peer packages.

Checklist

• My code adheres to this project's style guidelines
• I have performed a self-review of my own code
• My changes do not introduce new warnings
• I have written tests demonstrating that my changes are effective or that my feature works
• Local unit tests pass with my changes

[danny-avila]

@codex review

[danny-avila]

@codex review

[github-actions]

GitNexus: 🚀 deployed

The LibreChat-pr-13195 index is now live on the MCP server.
Deploy run

[danny-avila]

@codex review

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[chatgpt-codex-connector]

Codex Review: Didn't find any major issues. Breezy!

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[github-actions]

GitNexus: 🚀 deployed

The LibreChat-pr-13195 index is now live on the MCP server.
Deploy run