source-of-truth SKILL.md skillA
source-of-truth from ngocquang/source-of-truth is an agent skill: a SKILL.md folder an AI agent loads when a task calls for it.
mdr add ngocquang/source-of-truth/source-of-truth@git:20260926.24dd5f6Pins git:20260926.24dd5f6 in mdr.lock. Pin the fingerprint instead.
- Audit grade
- A, 17 of 17 checks passed
- Kind
- SKILL.md skill
- Repository
- ngocquang/source-of-truth
- Path
skills/source-of-truth/SKILL.md- Versions recorded
- 7
- Latest version
- git:20260926.24dd5f6, committed Sep 26, 2026
- First version recorded
- Aug 27, 2026
- Size
- 13,942 bytes
- Repository stars
- 41
- License
- MIT
Use in a project that has a docs/overview.md spec catalog, or when the user asks to set one up: before writing, modifying, or deleting production code in that project (refactors and bug fixes included) or checking whether a capability already exists; after a feature ships there or the user signals completion; when the user wants to change the project's roadmap, mission, or constitution, or to update/sync the spec docs.
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
# Spec Catalog (Spec-Driven Development) A self-maintaining catalog implementing SDD: principles gate plans, mission gates roadmap, roadmap gates specs, specs gate code. Written for AI to read before coding. Prevents four failure modes: (1) rebuilding a feature that already exists, (2) silently deleting features during refactor, (3) breaking invariants by changing behavior without knowing the contract, (4) building features that violate project principles or aren't on the roadmap. The **catalog** is the source of truth for "what exists, why, and what rules apply". The **code** is the source of truth for "how it works". ## Non-negotiable rules This skill is **RIGID, not advisory**. Two rules have no exceptions: 1. **Follow this process exactly.** Do not skip a mode, shortcut the Catalog check, or "use judgment" to bypass a gate. READ before *any* write/modify/delete; SYNC after *any* ship. "It's a small change" is not a reason to skip — small changes break invariants most often. …
Read the whole file at its exact version.
How to install
mdr add ngocquang/source-of-truth/source-of-truth@sha256:0e1c6b1ef65ff961The line at the top of this page pins the label git:20260926.24dd5f6, 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_w3bvgszfymeq6lsm)
1 badge image fetches in 30 days. What the badge shows.
Versions
The registry has recorded 7 versions of this file, between Aug 27, 2026 and Sep 26, 2026, about one every 5 days.
| version | committed | commit | size | audit | |
|---|---|---|---|---|---|
| git:20260926.24dd5f6 latest | 2026-09-26 | 24dd5f6 | 13,942 B | A | view · diff |
| git:20260926.fe51b9e | 2026-09-26 | fe51b9e | 14,246 B | A | view · diff |
| git:20260918.7022726 | 2026-09-18 | 7022726 | 14,166 B | A | view · diff |
| git:20260913.2208ee9 | 2026-09-13 | 2208ee9 | 13,967 B | A | view · diff |
| git:20260904.45a527c | 2026-09-04 | 45a527c | 13,880 B | A | view · diff |
| git:20260828.f4553ba | 2026-08-28 | f4553ba | 13,605 B | A | view · diff |
| git:20260827.2e1f57b | 2026-08-27 | 2e1f57b | 14,414 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 (13942 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
ngocquang/source-of-truth · 41 stars · license MIT · pushed 2026-09-28 · branch main
API
GET https://markdownregistry.com/api/v1/artifacts/art_w3bvgszfymeq6lsm GET https://markdownregistry.com/api/v1/resolve?ref=ngocquang/source-of-truth/source-of-truth GET https://markdownregistry.com/api/v1/blob/0e1c6b1ef65ff96134bdea27ca2f15e889a10574073822b48cb4805981af7012
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.