webhooks SKILL.md skillA
webhooks 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/webhooks@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/webhooks/SKILL.md- Versions recorded
- 1
- Latest version
- git:20260919.a0d4f55, committed Sep 19, 2026
- Size
- 7,711 bytes
- Repository stars
- 58
- License
- MIT
Receive or send HTTP webhooks correctly — signature verification on the raw body, fast acknowledgement, deduplication, out-of-order handling, retry and dead-letter behaviour, and the delivery contract a consumer needs. Use when adding or debugging a webhook endpoint, when integrating a provider's events, or when your own service has to notify others of changes. Not for internal queue or event-bus messages that never cross an HTTP boundary, and not for general outbound API retry policy.
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
# Webhooks A webhook is an untrusted HTTP request that claims to be an event. Almost every webhook bug is one of four things: the signature was checked against a re-serialized body, the handler did its work before acknowledging, the same event arrived twice, or events arrived out of order. ## When this fires Building or reviewing a webhook receiver, integrating a provider's events, or designing outbound event delivery to consumers. It does not fire for an internal queue consumer — that has no HTTP trust boundary, though its idempotency requirements are the same. ## Procedure — receiving 1. **Verify before you parse.** Compute the signature over the **raw request body exactly as received**, before any JSON decode or middleware re-serialization, and compare in constant time. Check the signed timestamp against a tolerance window so an old capture cannot be replayed. A request that fails verification gets a 4xx and nothing else — no logging of the payload as if it were real, no side effects. Never identify the sender by a field inside the payload. 2. **Confirm the secret's source.** Per-endpoint secret from configuration, never committed, and …
Read the whole file at its exact version.
How to install
mdr add nahid-sparktales/agent-dispatcher/webhooks@sha256:38a60bdef1295ebbThe 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_pqpuwqdnc7ytn35a)
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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 (7711 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_pqpuwqdnc7ytn35a GET https://markdownregistry.com/api/v1/resolve?ref=nahid-sparktales/agent-dispatcher/webhooks GET https://markdownregistry.com/api/v1/blob/38a60bdef1295ebbedb87524738cb84b437402c25b74a0219bc4aa03afcaa086
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.
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