idempotency-and-retries SKILL.md skillA
idempotency-and-retries from nahid-sparktales/agent-dispatcher is an agent skill: a SKILL.md folder an AI agent loads when a task calls for it.
mdr add nahid-sparktales/agent-dispatcher/idempotency-and-retries@git:20260919.a0d4f55Pins git:20260919.a0d4f55 in mdr.lock. Pin the fingerprint instead.
- Audit grade
- A, 17 of 17 checks passed
- Kind
- SKILL.md skill
- Repository
- nahid-sparktales/agent-dispatcher
- Path
skills/backend/idempotency-and-retries/SKILL.md- Versions recorded
- 1
- Latest version
- git:20260919.a0d4f55, committed Sep 19, 2026
- Size
- 7,216 bytes
- Repository stars
- 58
- License
- MIT
Make an operation safe to repeat — idempotency keys and their storage, what a replay returns, retry policy with backoff and jitter, and how to reconcile after a timeout whose outcome is unknown. Use when an operation has an external side effect (a charge, an email, a provisioning call), when a caller needs to retry safely, or when duplicates have already appeared in production. Not for webhook receipt mechanics, not for database transaction design, and not for choosing a queue.
Collected from public GitHub. Every version is saved exactly as it was and never changes. Install it at an exact version with the mdr tool, and every file is checked before it reaches your agent. The main file is checked against the SHA-256 fingerprint recorded here, and the others against the fingerprints GitHub keeps for its source commit. The automatic checks below grade the latest version, and the same checks always give the same file the same grade.
What the file says
# Idempotency and retries A timeout is not a failure. It is an unknown outcome, and the reflex to "just retry" is how one charge becomes two. Everything here exists to turn an unknown into something you can either repeat harmlessly or look up. ## When this fires Any operation with a side effect that is not naturally repeatable — money, messages, provisioning, counters, external API calls — or any time duplicate effects have been observed. It does not fire for a pure read, or for a write that is already a full replacement of a value with a value. ## Procedure 1. **Classify the operation first.** Naturally idempotent (set field to X, PUT a whole resource), repeat-unsafe (charge, send, increment, append), or read-only. Only the repeat-unsafe class needs the machinery below; adding it elsewhere is cost with no benefit. 2. **The key comes from the client and survives the retry.** Generated once per logical intent, reused unchanged on every attempt of that intent, and different for a genuinely new intent. A key the server generates per request is not an idempotency key. Scope it — per account and per …
Read the whole file at its exact version.
How to install
mdr add nahid-sparktales/agent-dispatcher/idempotency-and-retries@sha256:b593b30a889c317bThe line at the top of this page pins the label git:20260919.a0d4f55, which is what most people want. This one pins the sha256 fingerprint of the contents instead, so it survives a label being moved. Either way the exact version is written to mdr.lock, and mdr install downloads and checks those contents again, so it installs them exactly or stops with an error.
[](https://markdownregistry.com/a/art_4kay3o45bbuk6wvp)
4 badge image fetches in 30 days. What the badge shows.
Versions
The registry has recorded 1 version of this file, committed on Sep 19, 2026.
Audit of the latest version
- pass: Frontmatter block present
- pass: Frontmatter declares a name
- pass: Frontmatter declares a description
- pass: Size between 200 bytes and 200 KB (7216 bytes)
- pass: No zero-width or bidi control characters
- pass: No instruction hidden inside an HTML comment
- pass: No link to an exfiltration or paste host
- pass: No credential-shaped string
- pass: No instruction to send local credentials anywhere
- pass: No text hidden with inline styles
- pass: No prompt-injection phrasing
- pass: No curl or wget piped into a shell
- pass: No recursive delete of root, home or parent
- pass: No instruction to read or print local credentials
- pass: No base64 blob over 200 characters
- pass: No link to a raw IP address
- pass: No script tag
Source
nahid-sparktales/agent-dispatcher · 58 stars · license MIT · pushed 2026-10-24 · branch main
API
GET https://markdownregistry.com/api/v1/artifacts/art_4kay3o45bbuk6wvp GET https://markdownregistry.com/api/v1/resolve?ref=nahid-sparktales/agent-dispatcher/idempotency-and-retries GET https://markdownregistry.com/api/v1/blob/b593b30a889c317bf42bd5265c0e5b8f29a8c0e45ad8f205284c70ca93211e39
Your AI assistant does the legwork. You hear about the deals worth your word. Hand yours the standing instructions at modelranch.com and it joins the network that reads files like this one.
Guides: the SKILL.md format and its required fields · what to check before you install a skill · how to pin a skill to an exact version · where to find agent skills · keeping a team on the same skills · which agent file does what.