skill-engineering SKILL.md skillA
skill-engineering from xobotyi/cc-foundry is an agent skill: a SKILL.md folder an AI agent loads when a task calls for it.
mdr add xobotyi/cc-foundry/skill-engineering@git:20260828.4127f54Pins git:20260828.4127f54 in mdr.lock. Pin the fingerprint instead.
- Audit grade
- A, 17 of 17 checks passed
- Kind
- SKILL.md skill
- Repository
- xobotyi/cc-foundry
- Path
plugins/ai-helpers/skills/skill-engineering/SKILL.md- Versions recorded
- 5
- Latest version
- git:20260828.4127f54, committed Aug 28, 2026
- First version recorded
- May 15, 2026
- Size
- 9,832 bytes
- Repository stars
- 23
- License
- MIT
Author and maintain Agent Skills: routing metadata, body content, bundled references and scripts, evaluation, and distribution.
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
<prerequisite> A skill is instruction text. Invoke `prompt-engineering` for the wording, instruction budget, and timelessness rules that govern every line written here. This skill covers only what is specific to the skill artifact — routing metadata, packaging, progressive disclosure, and evaluation. </prerequisite> **A skill stabilizes a procedure the agent performs unreliably.** It is not a place for knowledge the model already has, and it is not documentation. Value concentrates in procedural anchoring — setup order, tool sequence, the check that catches a specific failure — not in explanation. ## Decide whether the behavior belongs in a skill - **Write a skill only where the model fails the procedure without it.** Skills pay off where the model is weak and cost where it is already competent: a skill on a task the model already handles adds tokens, adds an applicability judgment it can get wrong, and narrows the recovery path it would otherwise have found. - **One skill per procedure a user would name in a single request.** If one request needs two of these skills, they are one skill; if one skill answers two unrelated requests, it is two. …
Read the whole file at its exact version.
How to install
mdr add xobotyi/cc-foundry/skill-engineering@sha256:5d4e2a110a04feb8The line at the top of this page pins the label git:20260828.4127f54, 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_oj6t3vsmkyl3q632)
4 badge image fetches in 30 days. What the badge shows.
Versions
The registry has recorded 5 versions of this file, between May 15, 2026 and Aug 28, 2026, about one every 26 days.
| version | committed | commit | size | audit | |
|---|---|---|---|---|---|
| git:20260828.4127f54 latest | 2026-08-28 | 4127f54 | 9,832 B | A | view · diff |
| git:20260828.2e38d3c | 2026-08-28 | 2e38d3c | 19,045 B | A | view · diff |
| git:20260602.b17a8a2 | 2026-06-02 | b17a8a2 | 19,156 B | A | view · diff |
| git:20260517.756af3b | 2026-05-17 | 756af3b | 18,218 B | A | view · diff |
| git:20260515.cea62f4 | 2026-05-15 | cea62f4 | 18,223 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 (9832 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
xobotyi/cc-foundry · 23 stars · license MIT · pushed 2026-10-31 · branch master
API
GET https://markdownregistry.com/api/v1/artifacts/art_oj6t3vsmkyl3q632 GET https://markdownregistry.com/api/v1/resolve?ref=xobotyi/cc-foundry/skill-engineering GET https://markdownregistry.com/api/v1/blob/5d4e2a110a04feb862cb53c8f5d57e0113cf756badfeb549312d648e89e38a05
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.