contract-first SKILL.md skillA
contract-first from wankimmy/bossku-superpowers is an agent skill: a SKILL.md folder an AI agent loads when a task calls for it.
mdr add wankimmy/bossku-superpowers/contract-first@git:20261012.feb2361Pins git:20261012.feb2361 in mdr.lock. Pin the fingerprint instead.
- Audit grade
- A, 17 of 17 checks passed
- Kind
- SKILL.md skill
- Repository
- wankimmy/bossku-superpowers
- Path
skills/bosskuai-contract-first/references/upstream/SKILL.md- Versions recorded
- 1
- Latest version
- git:20261012.feb2361, committed Oct 12, 2026
- Size
- 9,761 bytes
- Repository stars
- 22
- License
- MIT
Coordinate frontend/backend or service-to-service work through one authoritative machine-checkable contract (OpenAPI, AsyncAPI, Protocol Buffers, or JSON Schema), with generated consumer types and contract-verified integration. Use when parallel consumer and provider work must evolve an API or event schema without field drift, mock/production shape mismatch, or one side silently redefining the interface.
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
# Contract-First Collaboration Coordinate frontend/backend or service-to-service work through one authoritative, machine-checkable contract. Consumers state what they need, providers implement that shape, and both sides verify against the same artifact before integration. This skill governs how teams change a boundary. It complements `api-design`, which governs what a good API looks like, and `ai-regression-testing`, which guards fixed bugs from returning. ## When to Activate - Frontend and backend work will proceed in parallel. - Two or more services exchange API payloads, events, or commands. - Field names, nullability, enums, or error shapes regularly drift. - One consumer needs several calls because the provider exposed storage models instead of a task-oriented response. - A provider change can break consumers maintained by another person or agent. - Mock responses and production responses no longer have the same shape. Do not add contract machinery to a single-module boundary that changes in one atomic commit and has no independent consumer. A shared type may be enough. ## The Boundary Artifact Choose one canonical, version-controlled artifact for each boundary: …
Read the whole file at its exact version.
How to install
mdr add wankimmy/bossku-superpowers/contract-first@sha256:3eaacf16a9bbd928The line at the top of this page pins the label git:20261012.feb2361, 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_2clenunpmbakcoko)
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Versions
The registry has recorded 1 version of this file, committed on Oct 12, 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 (9761 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
wankimmy/bossku-superpowers · 22 stars · license MIT · pushed 2026-10-21 · branch main
API
GET https://markdownregistry.com/api/v1/artifacts/art_2clenunpmbakcoko GET https://markdownregistry.com/api/v1/resolve?ref=wankimmy/bossku-superpowers/contract-first GET https://markdownregistry.com/api/v1/blob/3eaacf16a9bbd92888659e9c1e15b0fa4eb96a41c257dd9e08f2e63b824f0cea
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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