courier SKILL.md skillA
courier from trycourier/courier-skills is an agent skill: a SKILL.md folder an AI agent loads when a task calls for it.
mdr add trycourier/courier-skills/courier@git:20261105.a9d023cPins git:20261105.a9d023c in mdr.lock. Pin the fingerprint instead.
- Audit grade
- A, 17 of 17 checks passed
- Kind
- SKILL.md skill
- Repository
- trycourier/courier-skills
- Path
skills/courier/SKILL.md- Versions recorded
- 8
- Latest version
- git:20261105.a9d023c, committed Nov 5, 2026
- First version recorded
- Sep 29, 2026
- Size
- 15,884 bytes
- Repository stars
- 16
- License
- MIT
Builds and debugs notifications with Courier. Use whenever code or a task involves Courier or its API, SDKs, CLI or MCP: sends on email, SMS, push, inbox, Slack, Teams or WhatsApp; templates, journeys, digests, preferences, providers, webhooks, tenants.
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
# Courier ## The Model Courier is a notification platform. One API sends your product's notifications on email, SMS, push, in-app inbox, Slack, Microsoft Teams and WhatsApp through provider accounts you connect (SendGrid, Amazon SES, Twilio, FCM, APNs and more), with templates, journeys, preferences, brands, tenants, broadcasts, logs and analytics in one place. Teams edit templates in Design Studio without a deploy. A workspace has environments (Production, Test, and custom ones), each with its own API keys, templates and logs, and the key on a request picks the environment. One `send` call does the whole job. You address a **user** (or list, audience, or tenant), content comes from a **template** or inline, **routing** picks the channels, and **preferences** gate delivery. Courier renders, routes, and delivers; your app supplies the trigger and the data. Multi-step flows (anything with a delay, a branch, or aggregation) are **journeys**, defined as JSON and invoked by API. ## How to Use This Skill 1. **Route first.** [Where to Look](#where-to-look) picks the 1–2 files for the task. Don't read the tree. …
Read the whole file at its exact version.
How to install
mdr add trycourier/courier-skills/courier@sha256:7e62c0deb0705209The line at the top of this page pins the label git:20261105.a9d023c, 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_fcrsu37erd2dtljq)
1 badge image fetches in 30 days. What the badge shows.
Versions
The registry has recorded 8 versions of this file, between Sep 29, 2026 and Nov 5, 2026, about one every 5 days.
| version | committed | commit | size | audit | |
|---|---|---|---|---|---|
| git:20261105.a9d023c latest | 2026-11-05 | a9d023c | 15,884 B | A | view · diff |
| git:20261104.1be5f04 | 2026-11-04 | 1be5f04 | 19,886 B | A | view · diff |
| git:20261104.0553b1d | 2026-11-04 | 0553b1d | 19,729 B | A | view · diff |
| git:20261104.cfb9729 | 2026-11-04 | cfb9729 | 19,455 B | A | view · diff |
| git:20261104.411d387 | 2026-11-04 | 411d387 | 19,403 B | A | view · diff |
| git:20261022.f7e8e50 | 2026-10-22 | f7e8e50 | 19,026 B | A | view · diff |
| git:20261021.2489556 | 2026-10-21 | 2489556 | 18,509 B | A | view · diff |
| git:20260929.957d83a | 2026-09-29 | 957d83a | 18,184 B | A | view |
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 (15884 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
trycourier/courier-skills · 16 stars · license MIT · pushed 2026-11-05 · branch main
API
GET https://markdownregistry.com/api/v1/artifacts/art_fcrsu37erd2dtljq GET https://markdownregistry.com/api/v1/resolve?ref=trycourier/courier-skills/courier GET https://markdownregistry.com/api/v1/blob/7e62c0deb070520906fb4341f8e16965998c98b1e73f8b8fa6e4751ccf3ac03d
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.