jkheadley/instar · skills/instar-dev/SKILL.md

instar-dev skillA

instar-dev is agent-read markdown (skill) from jkheadley/instar: Instar-specific development skill used by the instar-developing agent (Echo, or any agent assigned instar-dev responsibilities). Wraps /build with mandatory side-effects review, signal-vs-authority principle check, and artifact generation. Structural enforcement via pre-commit/pre-push hooks — the instar repo refuses commits and pushes that didn't come through this skill. NOT a user-facing skill — end users should never invoke it..

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 jkheadley/instar/instar-dev@git:20260823.eef1fb4
Exact content
mdr add jkheadley/instar/instar-dev@sha256:db4ad00e85765552

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_4qamt5afq7ufqy2z.svg)](https://markdownregistry.com/a/art_4qamt5afq7ufqy2z)

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Versions

versioncommittedcommitsizeaudit
git:20260823.eef1fb4 latest2026-08-23 eef1fb4 23,650 BA view · diff
git:20260612.606455a2026-06-12 606455a 22,947 BA view · diff
git:20260610.fd3a0592026-06-10 fd3a059 22,362 BA view · diff
git:20260605.73bc39a2026-06-05 73bc39a 20,380 BA view · diff
git:20260604.21cf7a32026-06-04 21cf7a3 19,250 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 (23650 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

jkheadley/instar · 77 stars · license MIT · pushed 2026-09-06 · branch main

API

GET https://markdownregistry.com/api/v1/artifacts/art_4qamt5afq7ufqy2z
GET https://markdownregistry.com/api/v1/resolve?ref=jkheadley/instar/instar-dev
GET https://markdownregistry.com/api/v1/blob/db4ad00e85765552432e965c26202df0cbd4d879dc3af8a26f5adc440bb84cad