vsql-extension-builder SKILL.md skillB
vsql-extension-builder from villagesql/villagesql-skills is an agent skill: a SKILL.md folder an AI agent loads when a task calls for it.
mdr add villagesql/villagesql-skills/vsql-extension-builder@git:20261028.5fad431Pins git:20261028.5fad431 in mdr.lock. Pin the fingerprint instead.
- Audit grade
- B, 16 of 17 checks passed
- Kind
- SKILL.md skill
- Repository
- villagesql/villagesql-skills
- Path
skills/vsql-extension-builder/SKILL.md- Versions recorded
- 9
- Latest version
- git:20261028.5fad431, committed Oct 28, 2026
- First version recorded
- Jun 3, 2026
- Size
- 48,351 bytes
- Repository stars
- 5
- License
- a license file GitHub does not identify
Build a VillageSQL extension — custom SQL functions or custom types — in C++ or Rust, including a port of an existing PostgreSQL extension. Use when the user wants to create, scaffold, test, or port a VillageSQL (VEF) extension. Runs a 7-phase workflow: requirements, feasibility, scaffold, implementation, review, acceptance testing, and documentation, reading the current VEF API from the installed SDK headers.
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
# VillageSQL Extension Builder ## Arguments If invoked as `/vsql-extension-builder <description>`, treat `<description>` as the initial answer to "what extension should I build?" Record it and begin Phase 0 without asking that question again. Still ask about paths and server connectivity. ## Fresh Start Rule **On every fresh invocation, start at Phase 0.** Do NOT scan for prior sessions, check for tracking files, look for extension directories from previous runs, or attempt to resume automatically. The Resume Protocol exists for mid-session recovery only — it is NOT triggered at startup. If the user explicitly says "resume", "continue from where we left off", or similar, then and only then apply the Resume Protocol. ## Identity & Mission You are the **VillageSQL Extension Builder**, a specialized AI agent that builds VillageSQL extensions using VEF (custom types, functions, indexes). This workflow uses five personas — Product Strategist, Architect, Team Lead, CTO, and End-User — each owning specific phases with distinct responsibilities. Session-level tracking artifacts are stored in `.claude/tracking/` within the extension directory (covered by the …
Read the whole file at its exact version.
How to install
mdr add villagesql/villagesql-skills/vsql-extension-builder@sha256:ef18d2dd5cc65c28The line at the top of this page pins the label git:20261028.5fad431, 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_iog2hnarrqkev3lf)
3 badge image fetches in 30 days. What the badge shows.
Versions
The registry has recorded 9 versions of this file, between Jun 3, 2026 and Oct 28, 2026, about one every 18 days. Its first recorded version is graded A and its latest B.
| version | committed | commit | size | audit | |
|---|---|---|---|---|---|
| git:20261028.5fad431 latest | 2026-10-28 | 5fad431 | 48,351 B | B | view · diff |
| git:20261006.cbffb7c | 2026-10-06 | cbffb7c | 48,220 B | B | view · diff |
| git:20261001.e20477c | 2026-10-01 | e20477c | 46,701 B | B | view · diff |
| git:20261001.c05bcbb | 2026-10-01 | c05bcbb | 45,912 B | B | view · diff |
| git:20260828.e98bfc7 | 2026-08-28 | e98bfc7 | 45,566 B | A | view · diff |
| git:20260818.39490c1 | 2026-08-18 | 39490c1 | 45,048 B | A | view · diff |
| git:20260610.6329a7d | 2026-06-10 | 6329a7d | 43,126 B | A | view · diff |
| git:20260604.5b1e4bf | 2026-06-04 | 5b1e4bf | 42,918 B | A | view · diff |
| git:20260603.feac22e | 2026-06-03 | feac22e | 42,537 B | A | view |
Audit of the latest version
- fail: No curl or wget piped into a shell (matched: curl -fsSL https://install.villagesql.com | bash)
- pass: Frontmatter block present
- pass: Frontmatter declares a name
- pass: Frontmatter declares a description
- pass: Size between 200 bytes and 200 KB (48351 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
villagesql/villagesql-skills · 5 stars · license a license file GitHub does not identify · pushed 2026-11-06 · branch main
API
GET https://markdownregistry.com/api/v1/artifacts/art_iog2hnarrqkev3lf GET https://markdownregistry.com/api/v1/resolve?ref=villagesql/villagesql-skills/vsql-extension-builder GET https://markdownregistry.com/api/v1/blob/ef18d2dd5cc65c282b10c0793c26598a06b8011fbfb9062af40f799a39757555
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.