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Title: improvement(mcp): trace OAuth state writes to diagnose invalid_state clobber by waleedlatif1 · Pull Request #5772 · simstudioai/sim · GitHub

Open Graph Title: improvement(mcp): trace OAuth state writes to diagnose invalid_state clobber by waleedlatif1 · Pull Request #5772 · simstudioai/sim

X Title: improvement(mcp): trace OAuth state writes to diagnose invalid_state clobber by waleedlatif1 · Pull Request #5772 · simstudioai/sim

Description: Summary MCP OAuth (app.withgauge.com/mcp and others) fails on the callback with invalid_state ("Authorization expired"). Staging DB + logs confirm the authorization state is cleared ~5s after /oauth/start saves it, before the user authorizes — but clearState was silent, so the clobber never appeared in logs. Verified this is the only path that can null an existing row's state: safeDecrypt never touches state (it's a hash, not encrypted), and the discovery/connection paths short-circuit (if (!row.tokens)) before ever running the SDK auth() flow. Adds a caller context to saveState/clearState and logs every write, so the exact clobber source is pinned on the next repro — then the precise fix follows. Type of Change Improvement (diagnostic instrumentation) Testing Tested manually — lint, typecheck, and 29 OAuth unit tests pass. Instrumentation is behavior-preserving (optional param defaults to unknown). Checklist Code follows project style guidelines Self-reviewed my changes Tests added/updated and passing No new warnings introduced I confirm that I have read and agree to the terms outlined in the Contributor License Agreement (CLA)

Open Graph Description: Summary MCP OAuth (app.withgauge.com/mcp and others) fails on the callback with invalid_state ("Authorization expired"). Staging DB + logs confirm the authorization state is cleared ~5s ...

X Description: Summary MCP OAuth (app.withgauge.com/mcp and others) fails on the callback with invalid_state ("Authorization expired"). Staging DB + logs confirm the authorization state is clea...

Opengraph URL: https://github.com/simstudioai/sim/pull/5772

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og:image:altSummary MCP OAuth (app.withgauge.com/mcp and others) fails on the callback with invalid_state ("Authorization expired"). Staging DB + logs confirm the authorization state is cleared ~5s ...
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8bf096a improvement(mcp): trace OAuth state writes to diagnose invalid_state … waleedlatif1 Jul 20, 2026 https://github.com/simstudioai/sim/pull/5772/commits/8bf096a516c4a25377e6eea6b4d2535ec8c73d5a
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