Proof

We tested it instead of just claiming it

A claim about a competitor's gap is cheap to write and easy to overstate. Everything here is a clone of the real repository, run against a real database and, where a model is involved, a real API — with the method and the raw output published, not just the conclusion.

LangGraph Starter Kit (github.com/ac12644/langgraph-starter-kit)

Does LangGraph's interrupt() Guarantee Exactly-Once Execution? We Tested It.

5 of 8, then 8 of 8 duplicate executions of a 'cannot be undone' action, across two runs.

Stop rebuilding the plumbing.

agentFast's own crash-recovery and exactly-once guarantees are automated tests in the codebase — real Postgres, real SIGKILL, two processes — not a screen recording.

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