Deterministic simulation that classifies the retry-safety of external side effects. Never claims exactly-once.
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Updated
Aug 4, 2026 - TypeScript
Deterministic simulation that classifies the retry-safety of external side effects. Never claims exactly-once.
Retry Safety Analyzer: deterministic HIGH/MEDIUM/SAFE when a side-effecting tool may have been retried. Offline import — never executes the trace. HIGH is risk, not proof. External validation open.
Execution safety for side-effecting AI agent tools.
Enterprise idempotency kernel -- side effects under retries run exactly once. Payload fingerprinting, fence tokens, Postgres CAS, async-first.
Drop-in idempotency layer for POST endpoints: atomic Redis claiming, byte-identical replay, in-flight collapsing. Proof asserted in tests: 50 concurrent duplicate payment requests, exactly one charge. Includes the crash-window test middleware demos hide, closed with a DB uniqueness constraint (ADR explains which layer owns which guarantee).
Sashank Singh Digital Perspectives — technical writing about agent workflow testing, retry safety and software reliability.
Idempotency kernel for TypeScript. 1,000 racing callers, exactly one execution — proven under forced races, zero dependencies.
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