majiayu000/spellbook · skills/codex-retrospective/SKILL.md

codex-retrospective skillA

codex-retrospective is agent-read markdown (skill) from majiayu000/spellbook: Use when you want Codex to review its own recent history (last N days or specific period) and improve its behavior. Produces minimal, high-signal updates to AGENTS.md and tiny reusable skills. The goal is long-term fluency — Codex gradually becomes better at your specific style, constraints, and workflows..

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 majiayu000/spellbook/codex-retrospective@git:20260622.a472c7b
Exact content
mdr add majiayu000/spellbook/codex-retrospective@sha256:5c28e95c2a59af5e

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_jjggsfv2mla7b5uk.svg)](https://markdownregistry.com/a/art_jjggsfv2mla7b5uk)

0 badge views in 30 days

Versions

versioncommittedcommitsizeaudit
git:20260622.a472c7b latest2026-06-22 a472c7b 6,305 BA view · diff
git:20260610.de062df2026-06-10 de062df 5,321 BA view · diff
git:20260528.88c681b2026-05-28 88c681b 4,705 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 (6305 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

majiayu000/spellbook · 280 stars · license MIT · pushed 2026-09-18 · branch main

API

GET https://markdownregistry.com/api/v1/artifacts/art_jjggsfv2mla7b5uk
GET https://markdownregistry.com/api/v1/resolve?ref=majiayu000/spellbook/codex-retrospective
GET https://markdownregistry.com/api/v1/blob/5c28e95c2a59af5e4b1fddce090e6428d0a92a368b17517513ae2cde85087c52

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