jacquard SKILL.md skillB
jacquard from jbwinters/jacquard-lang is an agent skill: a SKILL.md folder an AI agent loads when a task calls for it.
mdr add jbwinters/jacquard-lang/jacquard@git:20261105.6345fc6Pins git:20261105.6345fc6 in mdr.lock. Pin the fingerprint instead.
- Audit grade
- B, 16 of 17 checks passed
- Kind
- SKILL.md skill
- Repository
- jbwinters/jacquard-lang
- Path
docs/SKILL.md- Versions recorded
- 16
- Latest version
- git:20261105.6345fc6, committed Nov 5, 2026
- First version recorded
- Sep 5, 2026
- Size
- 53,392 bytes
- Repository stars
- 122
- License
- Apache-2.0
Install and use Jacquard; write, check, run, format, hash, infer, test, and compile effect-typed, content-addressed .jac programs. Use for Jacquard surface syntax, capability manifests, handlers, discrete Dist models, Code values, Warp tests, canonical identity, replay, and native AOT builds.
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
# Jacquard Standalone Guide
Jacquard is a research language for model-written, human-reviewed programs.
Its central promise is that effects, uncertainty, and program identity remain
visible to the checker and tools:
- Function arrows carry effect rows, such as `(Text) ->{Net, Console} Int`.
- A runnable expression's inferred row is its authority manifest. The runtime
installs world handlers only for explicit `--allow` grants.
- Probability is the ordinary `Dist` effect. Exact enumeration and likelihood
weighting run the same model under different handlers.
- Definitions are content-addressed from canonical resolved structure after
comments, formatting, spans, provenance, and ordinary local or term names
are erased. This structural identity is not arbitrary program equivalence.
- Handlers are deep. `multi` operations bind reusable continuations; `once`
operations bind affine `Resume` values with static and runtime reuse checks.
This file is self-contained for public use. A repository checkout is needed
only to develop the OCaml implementation, not to install or write Jacquard.
This guide describes the current `main` branch. Where it differs from the
…Read the whole file at its exact version.
How to install
mdr add jbwinters/jacquard-lang/jacquard@sha256:e3c46d2822c1b6c5The line at the top of this page pins the label git:20261105.6345fc6, 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_kosfpmgflqee2x4t)
2 badge image fetches in 30 days. What the badge shows.
Versions
The registry has recorded 16 versions of this file, between Sep 5, 2026 and Nov 5, 2026, about one every 4 days.
| version | committed | commit | size | audit | |
|---|---|---|---|---|---|
| git:20261105.6345fc6 latest | 2026-11-05 | 6345fc6 | 53,392 B | B | view · diff |
| git:20261030.7c02b05 | 2026-10-30 | 7c02b05 | 53,278 B | B | view · diff |
| git:20261027.a36435c | 2026-10-27 | a36435c | 52,945 B | B | view · diff |
| git:20261026.616467e | 2026-10-26 | 616467e | 43,827 B | B | view · diff |
| git:20261006.55daf48 | 2026-10-06 | 55daf48 | 43,682 B | B | view · diff |
| git:20260928.3a92b12 | 2026-09-28 | 3a92b12 | 43,682 B | B | view · diff |
| git:20260928.3d5ef21 | 2026-09-28 | 3d5ef21 | 42,999 B | B | view · diff |
| git:20260928.b62b289 | 2026-09-28 | b62b289 | 42,775 B | B | view · diff |
| git:20260919.57aff70 | 2026-09-19 | 57aff70 | 42,441 B | B | view · diff |
| git:20260918.f273fe6 | 2026-09-18 | f273fe6 | 42,140 B | B | view · diff |
| git:20260918.9301f9c | 2026-09-18 | 9301f9c | 41,930 B | B | view · diff |
| git:20260912.041230b | 2026-09-12 | 041230b | 41,723 B | B | view · diff |
| git:20260912.49ed2d0 | 2026-09-12 | 49ed2d0 | 41,264 B | B | view · diff |
| git:20260912.61575c7 | 2026-09-12 | 61575c7 | 41,157 B | B | view · diff |
| git:20260910.128fbaf | 2026-09-10 | 128fbaf | 41,104 B | B | view · diff |
| git:20260905.9232e38 | 2026-09-05 | 9232e38 | 41,015 B | B | view |
Audit of the latest version
- fail: No curl or wget piped into a shell (matched: curl -fsSL https://raw.githubusercontent.com/jbwinters/jacquard-lang/jacquard-core-0.3.0/scripts/ins)
- pass: Frontmatter block present
- pass: Frontmatter declares a name
- pass: Frontmatter declares a description
- pass: Size between 200 bytes and 200 KB (53392 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 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
jbwinters/jacquard-lang · 122 stars · license Apache-2.0 · pushed 2026-11-08 · branch main
API
GET https://markdownregistry.com/api/v1/artifacts/art_kosfpmgflqee2x4t GET https://markdownregistry.com/api/v1/resolve?ref=jbwinters/jacquard-lang/jacquard GET https://markdownregistry.com/api/v1/blob/e3c46d2822c1b6c53a197347ecaedf2b405d1653068792c9a4e1ae70a9d50fea
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.