zhaojiannet/canon · plugins/lockstep-postgres/skills/postgres/SKILL.md

postgres skillA

postgres is agent-read markdown (skill) from zhaojiannet/canon: Enforce PostgreSQL schema design and safe migrations. Use when editing **/migrations/*.sql, **/schema/*.sql, **/migrate/*.sql, or when the user mentions CREATE TABLE, ALTER TABLE, foreign key, index, jsonb, BIGSERIAL, timestamptz, migration, NOT NULL, DROP TABLE, or CREATE INDEX. Keeps every table on one shape (snake_case, timestamptz, FK plus index, JSONB), wraps migrations in a transaction, builds indexes CONCURRENTLY, adds NOT NULL columns in steps, and stops for approval before any destructi.

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 zhaojiannet/canon/postgres@git:20260914.a9571da
Exact content
mdr add zhaojiannet/canon/postgres@sha256:f4d41816511fe648

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_7ue7ihd6pzal6jpv.svg)](https://markdownregistry.com/a/art_7ue7ihd6pzal6jpv)

1 badge views in 30 days

Versions

versioncommittedcommitsizeaudit
git:20260914.a9571da latest2026-09-14 a9571da 9,931 BA view · diff
git:20260914.4fe3f9f2026-09-14 4fe3f9f 9,964 BA view · diff
git:20260727.c4e47f12026-07-27 c4e47f1 8,528 BA view · diff
git:20260606.8fe8fe12026-06-06 8fe8fe1 10,474 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 (9931 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

zhaojiannet/canon · 3 stars · license MIT · pushed 2026-09-14 · branch main

API

GET https://markdownregistry.com/api/v1/artifacts/art_7ue7ihd6pzal6jpv
GET https://markdownregistry.com/api/v1/resolve?ref=zhaojiannet/canon/postgres
GET https://markdownregistry.com/api/v1/blob/f4d41816511fe64888a71980f8b8bc00829201f5df7f36469bdb918d57f387dd