matrix-announcement SKILL.md skillA
matrix-announcement from netresearch/matrix-skill is an agent skill: a SKILL.md folder an AI agent loads when a task calls for it.
mdr add netresearch/matrix-skill/matrix-announcement@v4.1.0Pins v4.1.0 in mdr.lock. Pin the fingerprint instead.
- Audit grade
- A, 17 of 17 checks passed
- Kind
- SKILL.md skill
- Repository
- netresearch/matrix-skill
- Path
skills/matrix-announcement/SKILL.md- Versions recorded
- 13
- Latest version
- v4.1.0, committed Nov 4, 2026
- First version recorded
- Aug 14, 2026
- Size
- 3,575 bytes
- Repository stars
- 5
- License
- a license file GitHub does not identify
Use when composing a Matrix announcement — skill release, version bump, weekly digest, breaking-change heads-up, postmortem, RFC, multi-skill pipeline summary, or any agent-authored room post longer than a single line. Trigger before any matrix-send call that produces structured content. Companion to matrix-communication.
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
# Matrix Announcement Content rules for Matrix announcements. `matrix-communication` does the sending. ## The five rules 1. **One headline, one purpose.** 2. **`formatted_body` in the HTML subset, not Markdown.** `body` is the plaintext fallback — clients aren't required to parse Markdown. 3. **Lists beat paragraphs.** Enumerable items — findings, projects, failures, tickets — are a `<ul>`, however long each runs. A bold-led paragraph is emphasis, not structure. 4. **Wrap code — and name the thing itself.** Commands, paths, versions, IDs, env vars in `<code>`; multi-line in `<pre><code class="language-…">`. Name the identifier, not a category standing in for it (`html-subset.md`). 5. **Layout > words → render an HTML card to PNG.** Comparisons, dashboards and multi-row tables die in `formatted_body`. ## Type tags (pick one — never stack) `New skill` first release · `Release` feature version · `Patch` bugfix-only · `Digest` weekly roundup · `Heads-up` breaking change or deprecation · `Postmortem` incident · `Findings` investigation or audit · `RFC` proposal seeking feedback Findings reports group by category of finding, never by who was wrong (`structure.md`). ## Glyphs …
Read the whole file at its exact version.
How to install
mdr add netresearch/matrix-skill/matrix-announcement@sha256:6a5af78e573ddbb7The line at the top of this page pins the label v4.1.0, 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_rtcnjrvf6rzrrxdp)
2 badge image fetches in 30 days. What the badge shows.
Versions
The registry has recorded 13 versions of this file, between Aug 14, 2026 and Nov 4, 2026, about one every 7 days.
| version | committed | commit | size | audit | |
|---|---|---|---|---|---|
| v4.1.0 latest | 2026-11-04 | 9840498 | 3,575 B | A | view · diff |
| v4.0.0 | 2026-10-21 | d79b069 | 3,575 B | A | view · diff |
| v3.1.8 | 2026-09-29 | a130666 | 3,575 B | A | view · diff |
| v3.1.8 | 2026-09-27 | 1233c79 | 3,488 B | A | view · diff |
| v3.1.7 | 2026-09-18 | 26dbb01 | 3,488 B | A | view · diff |
| v3.1.6 | 2026-09-16 | d1bc08c | 3,488 B | A | view · diff |
| v3.1.5 | 2026-09-12 | 78e33ba | 3,488 B | A | view · diff |
| v3.1.4 | 2026-09-11 | 485cf97 | 3,488 B | A | view · diff |
| v3.1.3 | 2026-09-03 | 60c656e | 3,488 B | A | view · diff |
| v3.1.2 | 2026-08-27 | c47aa8c | 3,488 B | A | view · diff |
| v3.1.1 | 2026-08-19 | 33d75eb | 3,488 B | A | view · diff |
| v3.1.1 | 2026-08-17 | 4669be4 | 4,655 B | A | view · diff |
| v3.1.0 | 2026-08-14 | e3e1ae6 | 4,655 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 (3575 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
netresearch/matrix-skill · 5 stars · license a license file GitHub does not identify · pushed 2026-11-07 · branch main
API
GET https://markdownregistry.com/api/v1/artifacts/art_rtcnjrvf6rzrrxdp GET https://markdownregistry.com/api/v1/resolve?ref=netresearch/matrix-skill/matrix-announcement GET https://markdownregistry.com/api/v1/blob/6a5af78e573ddbb7f8032dd3dfac4f4b0cd5326a5474d59c8d29d2def8fb5141
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.