fsl-requirements SKILL.md skillA
fsl-requirements from ymm-oss/fsl is an agent skill: a SKILL.md folder an AI agent loads when a task calls for it.
mdr add ymm-oss/fsl/fsl-requirements@git:20261107.18bd5bfPins git:20261107.18bd5bf in mdr.lock. Pin the fingerprint instead.
- Audit grade
- A, 17 of 17 checks passed
- Kind
- SKILL.md skill
- Repository
- ymm-oss/fsl
- Path
skills/fsl-requirements/SKILL.md- Versions recorded
- 15
- Latest version
- git:20261107.18bd5bf, committed Nov 7, 2026
- First version recorded
- Jul 17, 2026
- Size
- 16,225 bytes
- Repository stars
- 37
- License
- Apache-2.0
Write and verify FSL requirements-layer specs for PMs/PdMs from natural-language product requirements, acceptance criteria, forbidden flows, requirement IDs, traceability, decision tables, and NFRs such as permissions, audit, capacity, reliability, and SLA/deadline behavior, in English and optionally with a Japanese glossary and Japanese keywords. Use when the deliverable is a requirements specification, not business process discovery, software architecture, internal design, or implementation…
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
# FSL Requirements Layer
A headerless document is FSL 4; to migrate it, see the migration guide in `docs/manual/LANGUAGE.md` ("FSL 4 to FSL 5 migration").
Use this skill to formalize PM/PdM requirements as a `requirements Name { ... }`
FSL file headed `fsl 5`. The deliverable is a requirements contract that
development can consume: the vocabulary (actors, entities, their lifecycles),
the events, the rules and decision tables with their requirement IDs and
source text, acceptance and forbidden scenarios, and optional conformance to an
upper business layer.
This skill owns the syntax of this layer:
- `references/syntax.md` — every requirements member, one checked spec walked
through member by member;
- `references/keywords.md` — the English / Japanese keyword table and the
particles;
- `references/glossary.md` — how to write a `glossary` and the Japanese
spelling of the example below.
Expressions (`and`, `or`, `not`, comparisons, arithmetic), the `verify { }`
block, and kernel members are those of `../fsl/references/syntax.md`. The shared
`../fsl/references/layers.md` covers edition-aware seams and delegates requirements
…Read the whole file at its exact version.
How to install
mdr add ymm-oss/fsl/fsl-requirements@sha256:f46022dde6bba1c5The line at the top of this page pins the label git:20261107.18bd5bf, 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_b5of22znuuc3gw3x)
4 badge image fetches in 30 days. What the badge shows.
Versions
The registry has recorded 15 versions of this file, between Jul 17, 2026 and Nov 7, 2026, about one every 8 days.
| version | committed | commit | size | audit | |
|---|---|---|---|---|---|
| git:20261107.18bd5bf latest | 2026-11-07 | 18bd5bf | 16,225 B | A | view · diff |
| git:20261107.deab533 | 2026-11-07 | deab533 | 16,114 B | A | view · diff |
| git:20261028.e64d3fb | 2026-10-28 | e64d3fb | 12,838 B | A | view · diff |
| git:20261026.61a55bf | 2026-10-26 | 61a55bf | 12,531 B | A | view · diff |
| git:20261026.d072e77 | 2026-10-26 | d072e77 | 12,436 B | A | view · diff |
| git:20261026.aa85170 | 2026-10-26 | aa85170 | 12,201 B | A | view · diff |
| git:20261026.88130a3 | 2026-10-26 | 88130a3 | 12,134 B | A | view · diff |
| git:20261017.bf06ebf | 2026-10-17 | bf06ebf | 11,898 B | A | view · diff |
| git:20261015.5401e68 | 2026-10-15 | 5401e68 | 11,339 B | A | view · diff |
| git:20260929.d8a8acc | 2026-09-29 | d8a8acc | 10,207 B | A | view · diff |
| git:20260911.246f098 | 2026-09-11 | 246f098 | 10,200 B | A | view · diff |
| git:20260828.927728f | 2026-08-28 | 927728f | 10,255 B | A | view · diff |
| git:20260727.4af5738 | 2026-07-27 | 4af5738 | 10,254 B | A | view · diff |
| git:20260727.e00cfd1 | 2026-07-27 | e00cfd1 | 9,399 B | A | view · diff |
| git:20260717.4e10816 | 2026-07-17 | 4e10816 | 9,119 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 (16225 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
ymm-oss/fsl · 37 stars · license Apache-2.0 · pushed 2026-11-07 · branch main
API
GET https://markdownregistry.com/api/v1/artifacts/art_b5of22znuuc3gw3x GET https://markdownregistry.com/api/v1/resolve?ref=ymm-oss/fsl/fsl-requirements GET https://markdownregistry.com/api/v1/blob/f46022dde6bba1c5b7fbe726a9e1c71af211a78510dea7b848a2079ad5a36a2a
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.