contract-test-writer SKILL.md skillA
contract-test-writer from skillmedev/skills is an agent skill: a SKILL.md folder an AI agent loads when a task calls for it.
mdr add skillmedev/skills/contract-test-writer@git:20261005.bea4ea5Pins git:20261005.bea4ea5 in mdr.lock. Pin the fingerprint instead.
- Audit grade
- A, 17 of 17 checks passed
- Kind
- SKILL.md skill
- Repository
- skillmedev/skills
- Path
skills/contract-test-writer/SKILL.md- Versions recorded
- 3
- Latest version
- git:20261005.bea4ea5, committed Oct 5, 2026
- First version recorded
- Jul 5, 2026
- Size
- 6,627 bytes
- Repository stars
- 19
- License
- MIT
Writes consumer-driven contract tests at service and API boundaries - Pact consumer tests, provider verification, broker publishing, and can-i-deploy gates - so an incompatible change fails a build instead of breaking integrations in production. Use when someone asks "how do I stop the backend breaking my client", "set up Pact between these services", "a renamed field broke a consumer that unit tests passed", or two separately deployed services must stay in sync. Do NOT use for designing a new…
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 Test Writer Pin the shape of a network boundary from the consumer's side so a provider change that breaks any deployed consumer fails the provider's build, not production. The costly failure this prevents is the silent break: both teams' unit tests pass, both deploys go green, and the integration dies at runtime because a field was renamed or a status code changed and nothing in either pipeline knew the other side existed. ## Operating procedure The consumer-driven order is the point: the consumer declares what it needs first, and the provider verifies against that declaration. Reversing it (provider publishes a schema, consumers hope) is how unread fields calcify and real dependencies go untracked. ### Step 1: Gather inputs 1. The boundary: consumer name, provider name, and the calls in play. Confirm it is a real network boundary you do not control end-to-end (cross-service call, client-to-API). For an internal function call inside one deployable, stop - write a unit test instead. 2. The fields the consumer actually reads from each response - from the consumer's code, not the provider's docs. …
Read the whole file at its exact version.
How to install
mdr add skillmedev/skills/contract-test-writer@sha256:bc3a18bb8d284edcThe line at the top of this page pins the label git:20261005.bea4ea5, 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_gd5xwkgqhysngtfs)
1 badge image fetches in 30 days. What the badge shows.
Versions
The registry has recorded 3 versions of this file, between Jul 5, 2026 and Oct 5, 2026, about one every 46 days.
| version | committed | commit | size | audit | |
|---|---|---|---|---|---|
| git:20261005.bea4ea5 latest | 2026-10-05 | bea4ea5 | 6,627 B | A | view · diff |
| git:20260705.a28c4ce | 2026-07-05 | a28c4ce | 6,585 B | A | view · diff |
| git:20260705.acb5571 | 2026-07-05 | acb5571 | 6,621 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 (6627 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
skillmedev/skills · 19 stars · license MIT · pushed 2026-10-13 · branch main
API
GET https://markdownregistry.com/api/v1/artifacts/art_gd5xwkgqhysngtfs GET https://markdownregistry.com/api/v1/resolve?ref=skillmedev/skills/contract-test-writer GET https://markdownregistry.com/api/v1/blob/bc3a18bb8d284edc6113e7818f28ea34a8b0841232d3926ce70032b4b3d3a227
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.