fixtures SKILL.md skillC
fixtures from spartanlabsxyz/simmer-sdk is an agent skill: a SKILL.md folder an AI agent loads when a task calls for it.
mdr add spartanlabsxyz/simmer-sdk/fixtures@git:20260608.a29a3bePins git:20260608.a29a3be in mdr.lock. Pin the fingerprint instead.
- Audit grade
- C, 14 of 17 checks passed
- Kind
- SKILL.md skill
- Repository
- spartanlabsxyz/simmer-sdk
- Path
mcp/tests/fixtures/SKILL.md- Versions recorded
- 1
- Latest version
- git:20260608.a29a3be, committed Jun 8, 2026
- Size
- 216 bytes
- Repository stars
- 56
- License
- MIT
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
# Fixture Instruction-Only Skill This is a Tier-A instruction-only fixture used to verify that invoking an instruction-only skill returns its SKILL.md playbook instead of an error. UNIQUE_FIXTURE_MARKER_4815162342
Read the whole file at its exact version.
How to install
mdr add spartanlabsxyz/simmer-sdk/fixtures@sha256:115eaeff7e0f7f09The line at the top of this page pins the label git:20260608.a29a3be, 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_z3spm7q2ud4qrx37)
3 badge image fetches in 30 days. What the badge shows.
Versions
The registry has recorded 1 version of this file, committed on Jun 8, 2026.
Audit of the latest version
- fail: Frontmatter block present
- fail: Frontmatter declares a name
- fail: Frontmatter declares a description
- pass: Size between 200 bytes and 200 KB (216 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
Starting a new one? Use a template for SKILL.md on mdpantry, which passes every one of these checks and says what to change in it.
Source
spartanlabsxyz/simmer-sdk · 56 stars · license MIT · pushed 2026-11-06 · branch main
API
GET https://markdownregistry.com/api/v1/artifacts/art_z3spm7q2ud4qrx37 GET https://markdownregistry.com/api/v1/resolve?ref=spartanlabsxyz/simmer-sdk/fixtures GET https://markdownregistry.com/api/v1/blob/115eaeff7e0f7f0905c89359ec0585a3009050c1cdee1f1bc548534b5e5cd160
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.