Make API retries safe on both sides of the connection.
Designs server-side idempotency support and client retry guidance so public API integrators can safely retry writes.
When to use it
Use when the user mentions an Idempotency-Key header, duplicate submissions, safe POST retries, backoff, or jitter.
Give it your API project; it asks clarifying questions before designing idempotency support, retry guidance, SDK defaults, and integrator documentation.
What you provide
Leaves error codes, envelopes, retryable flags, and Retry-After signaling to this skill and consumes its signals; whether it must be installed to complete the workflow is unstated.
No additional actions listed.