falsify-spec SKILL.md skillA
falsify-spec from tmusser/ai-engineering-skills is an agent skill: a SKILL.md folder an AI agent loads when a task calls for it.
mdr add tmusser/ai-engineering-skills/falsify-spec@git:20261020.30b4737Pins git:20261020.30b4737 in mdr.lock. Pin the fingerprint instead.
- Audit grade
- A, 17 of 17 checks passed
- Kind
- SKILL.md skill
- Repository
- tmusser/ai-engineering-skills
- Path
skills/falsify-spec/SKILL.md- Versions recorded
- 1
- Latest version
- git:20261020.30b4737, committed Oct 20, 2026
- Size
- 5,011 bytes
- Repository stars
- 6
- License
- MIT
Adversarially test a bounded SPEC.md for plausible wrong implementations that still pass its written acceptance criteria, then propose source-backed discriminating checks.
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
# Falsify Spec ## Purpose Find the **plausible wrong implementation that still passes the written spec**. Pressure-test acceptance criteria before coding, not the code after it ships. This is an optional adversarial pass between `mini-spec` and implementation. It does not replace source grooming, the deterministic `spec_gate.py` auditability check, `test-mini`, or post-implementation `verify-contract`. ## When to use Invoke as `/falsify-spec` or ask "What wrong implementation could pass this spec?" Use selectively when a spec is written but an ambiguous boundary, regression seam, data meaning, or potentially weak acceptance test could produce false confidence. Skip when the slice is trivial and already unambiguous. Do not activate merely because `mini-spec` ran or the skill is installed. If a usable spec does not exist yet, write one with `mini-spec` first. ## Inputs - Current `SPEC.md` with acceptance criteria, non-goals, invalid-if constraints, verification demo, and any declared authoritative references - Original user request and directly relevant tests, schemas, code, or fixtures - Named compatibility seams and any known baseline behavior ## Workflow …
Read the whole file at its exact version.
How to install
mdr add tmusser/ai-engineering-skills/falsify-spec@sha256:49b2ac0ec7945dd0The line at the top of this page pins the label git:20261020.30b4737, 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_okda6fylbzsxm6e7)
3 badge image fetches in 30 days. What the badge shows.
Versions
The registry has recorded 1 version of this file, committed on Oct 20, 2026.
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 (5011 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
tmusser/ai-engineering-skills · 6 stars · license MIT · pushed 2026-11-01 · branch main
API
GET https://markdownregistry.com/api/v1/artifacts/art_okda6fylbzsxm6e7 GET https://markdownregistry.com/api/v1/resolve?ref=tmusser/ai-engineering-skills/falsify-spec GET https://markdownregistry.com/api/v1/blob/49b2ac0ec7945dd00d3f6e0266c64cf940d2d62e3596bc292eba999864310a76
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.