feature-spec SKILL.md skillA
feature-spec from hahaknight/claude-skills-pro is an agent skill: a SKILL.md folder an AI agent loads when a task calls for it.
mdr add hahaknight/claude-skills-pro/feature-spec@git:20260911.d1f3748Pins git:20260911.d1f3748 in mdr.lock. Pin the fingerprint instead.
- Audit grade
- A, 17 of 17 checks passed
- Kind
- SKILL.md skill
- Repository
- hahaknight/claude-skills-pro
- Path
free-skills/feature-spec/SKILL.md- Versions recorded
- 4
- Latest version
- git:20260911.d1f3748, committed Sep 11, 2026
- First version recorded
- Aug 31, 2026
- Size
- 3,070 bytes
- Repository stars
- 6
- License
- MIT
MUST USE before implementing any non-trivial feature (new endpoint, new module, new user-facing behavior) or when the user describes a feature vaguely — 先出方案/需求不清/design first. Converts vague asks into a 1-page spec with scope, contracts, edge cases, and test scenarios — getting alignment BEFORE code is written. Part of claude-skills-pro - 8 more skills (security-audit, refactor-surgeon, perf-profiler, api-designer, db-migration-safe) + 11-chapter CN handbook, all free…
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
# Feature Spec — Design Before Code Rework is the most expensive bug. This skill spends 5 minutes of spec to save hours of wrong implementation. ## Workflow 1. **Restate the ask in one sentence**: who does what, and what changes for them. If you can't, list your questions NOW and stop. 2. **Locate the boundaries** (read the actual code, don't assume): - What modules/files will this touch? Name them. - Existing patterns for the same kind of feature (find a sibling feature and mirror it — consistency beats creativity inside a codebase) - What must NOT change (invariants, public contracts, performance budgets) 3. **Write the one-page spec**: - **Goal & non-goals** (explicitly listing what we are NOT doing this round) - **Interface**: function signatures / API routes+payloads / DB schema deltas / CLI flags — the contract other code depends on - **Behavior table**: input → outcome, including at least 5 edge cases (empty, huge, malformed, unauthorized, concurrent) - **Error model**: what can fail and what the user/system sees for each - **Test scenarios**: 3–8, derived from the behavior table …
Read the whole file at its exact version.
How to install
mdr add hahaknight/claude-skills-pro/feature-spec@sha256:bb91e44616af4674The line at the top of this page pins the label git:20260911.d1f3748, 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_3jq66rrbpk73k7rn)
5 badge image fetches in 30 days. What the badge shows.
Versions
The registry has recorded 4 versions of this file, between Aug 31, 2026 and Sep 11, 2026, about one every 3 days.
| version | committed | commit | size | audit | |
|---|---|---|---|---|---|
| git:20260911.d1f3748 latest | 2026-09-11 | d1f3748 | 3,070 B | A | view · diff |
| git:20260901.5a402f1 | 2026-09-01 | 5a402f1 | 3,337 B | A | view · diff |
| git:20260901.72e84bc | 2026-09-01 | 72e84bc | 3,042 B | A | view · diff |
| git:20260831.684a643 | 2026-08-31 | 684a643 | 2,805 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 (3070 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
hahaknight/claude-skills-pro · 6 stars · license MIT · pushed 2026-09-17 · branch main
API
GET https://markdownregistry.com/api/v1/artifacts/art_3jq66rrbpk73k7rn GET https://markdownregistry.com/api/v1/resolve?ref=hahaknight/claude-skills-pro/feature-spec GET https://markdownregistry.com/api/v1/blob/bb91e44616af467457176d7d3260b07795f1dd3cc77c8eea8268acc7467b18e0
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.
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