contracts SKILL.md skillA

This file is byte-identical to the first copy the registry indexed. Same content hash, so the same checks give both the same grade.

contracts from ramboz/jig is an agent skill: a SKILL.md folder an AI agent loads when a task calls for it.

Install it, pinned
mdr add ramboz/jig/contracts@git:20260715.7d538ea

Pins git:20260715.7d538ea in mdr.lock. Pin the fingerprint instead.

Audit grade
A, 17 of 17 checks passed
Kind
SKILL.md skill
Repository
ramboz/jig
Path
hosts/claude/skills/contracts/SKILL.md
Versions recorded
2
Latest version
git:20260715.7d538ea, committed Jul 15, 2026
First version recorded
Jun 22, 2026
Size
13,978 bytes
Repository stars
7
License
MIT

Team baseline for external-interface contract artifacts: OpenAPI, JSON Schema, AsyncAPI, .proto, and GraphQL SDL, with spectral, ajv, buf, and graphql-inspector validation. Nudges devs toward contract-first artifacts; never writes them and never scaffolds a contracts/ directory. Auto-triggers for what contract should I use for this API, do we have an OpenAPI spec, add a JSON schema for this, recommend a schema for this endpoint, validate this API contract, or what's the right artifact for…

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

> Spec 022 promoted this skill from a deliberate stub
> ([ADR-0002](../../docs/decisions/adr-0002-contracts-stays-deferred.md))
> to jig's **team baseline** for external-interface contract artifacts,
> following the reframing in
> [ADR-0005](../../docs/decisions/adr-0005-contracts-as-judgment-skill.md).
> Like `/jig:pr-review` (spec 012), `/jig:arch-review` (spec 014), and
> `/jig:vision-elicitation` (spec 017), it ships as SKILL.md only — no
> `.py` helper. The skill recommends the canonical industry-standard
> schema per external surface and points at the ecosystem tools that
> validate it. It does **not** write schemas, **not** scaffold a
> `contracts/` directory, and **not** enforce contracts via PreToolUse
> hooks. Enforcement is structural via the spec-author's first-pass
> attention and the independent-review reviewer prompt's second-pass
> check — both wired in slice 022-02.

## What this skill does

For each external surface a project exposes (HTTP API, event bus, RPC,
GraphQL, internal data shapes, CLI output, config), this skill
recommends:

1. **The canonical artifact** — what to put on disk (e.g.,
   `openapi.yaml`, `*.schema.json`, `*.proto`, `schema.graphql`).
…

Read the whole file at its exact version.

How to install

The exact contents, by fingerprint
mdr add ramboz/jig/contracts@sha256:c6747322cb3f1711

The line at the top of this page pins the label git:20260715.7d538ea, 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.

Badge

mdr badge

[![mdr](https://markdownregistry.com/badge/art_zrynsljhi3jzb6or.svg)](https://markdownregistry.com/a/art_zrynsljhi3jzb6or)

2 badge image fetches in 30 days. What the badge shows.

Versions

The registry has recorded 2 versions of this file, between Jun 22, 2026 and Jul 15, 2026, about one every 23 days.

versioncommittedcommitsizeaudit
git:20260715.7d538ea latest2026-07-15 7d538ea 13,978 BA view · diff
git:20260622.65ad1f62026-06-22 65ad1f6 14,359 BA view

Audit of the latest version

A  17 of 17 checks passed. Fixed automatic checks with no AI involved, so the same checks give the same answer every run.
  • pass: Frontmatter block present
  • pass: Frontmatter declares a name
  • pass: Frontmatter declares a description
  • pass: Size between 200 bytes and 200 KB (13978 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

GitHub

ramboz/jig · 7 stars · license MIT · pushed 2026-10-27 · branch main

API

GET https://markdownregistry.com/api/v1/artifacts/art_zrynsljhi3jzb6or
GET https://markdownregistry.com/api/v1/resolve?ref=ramboz/jig/contracts
GET https://markdownregistry.com/api/v1/blob/c6747322cb3f17116e162a321d1273f57c6cc1d12baf07233ce33c668e5250d7

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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Every file in ramboz/jig

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contracts SKILL.md skill
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