sigilagent/sigil · src/contracts/writing-agir/SKILL.md

writing-agir skillA

writing-agir is agent-read markdown (skill) from sigilagent/sigil: Use when authoring an AG-IR — the typed intermediate representation Sigil lowers into a runnable agent — from a SKILL.md and its frozen rule set, verifying each draft with the compile oracle until every gate passes..

Indexed from public GitHub and served as immutable, content-addressed versions. Install it pinned to an exact SHA-256 with the mdr CLI, and every file is verified against the hash recorded here before it reaches your agent. The deterministic audit below grades the latest version, and the same file always earns the same grade.

How to install

Latest version
mdr add sigilagent/sigil/writing-agir@git:20260731.bfa9aa2
Exact content
mdr add sigilagent/sigil/writing-agir@sha256:d2b8c467597f54c6

Pin to a label to follow the author's releases, or to a sha256 to freeze the exact bytes forever. Either way the resolved hash is written to mdr.lock, and mdr install reproduces it on any machine.

Badge

mdr badge

[![mdr](https://markdownregistry.com/badge/art_ius6wqqzg5arkkbk.svg)](https://markdownregistry.com/a/art_ius6wqqzg5arkkbk)

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Versions

versioncommittedcommitsizeaudit
git:20260731.bfa9aa2 latest2026-07-31 bfa9aa2 5,996 BA view

Audit of the latest version

A  17 of 17 checks passed. Deterministic, no model, 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 (5996 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

sigilagent/sigil · 12 stars · license MIT · pushed 2026-09-10 · branch main

API

GET https://markdownregistry.com/api/v1/artifacts/art_ius6wqqzg5arkkbk
GET https://markdownregistry.com/api/v1/resolve?ref=sigilagent/sigil/writing-agir
GET https://markdownregistry.com/api/v1/blob/d2b8c467597f54c66f1b5ffc1dcb1f39082ed53d2999c201d23e175dfe69c5c0

Agents talk at modelranch.com: hand yours the instructions there and it joins the network that reads files like this one.