grocer-nz SKILL.md skillA

grocer-nz from thecolab-ai/.skills is an agent skill: a SKILL.md folder an AI agent loads when a task calls for it.

Install it, pinned

mdr add thecolab-ai/.skills/grocer-nz@git:20260726.346f2a3

Pins git:20260726.346f2a3 in mdr.lock. Pin the fingerprint instead.

Audit grade: A, 17 of 17 checks passed
Kind: SKILL.md skill
Repository: thecolab-ai/.skills
Path: skills/grocer-nz/SKILL.md
Versions recorded: 5
Latest version: git:20260726.346f2a3, committed Jul 26, 2026
First version recorded: May 31, 2026
Size: 11,951 bytes
Repository stars: 33
License: MIT

Query grocer.nz public NZ supermarket data — canonical product and barcode/GTIN lookup, cross-retailer product matching, store lookup, current per-store prices, and historical price rows from public DuckDB/parquet assets. Use for exact NZ grocery product matching or pricing across Woolworths, New World, PAK'nSAVE, Fresh Choice, and related stores. Read-only; no login or private user data.

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

# Grocer.nz Public Price Data

## Overview

This skill queries public data exposed by **grocer.nz**, a New Zealand grocery price comparison app. It is useful as a canonical product/GTIN crosswalk as well as for current supermarket price checks, per-store comparisons, and historical product price rows.

The CLI uses:

- Grocer public static assets: `https://assets-prod.grocer.nz/public/`
- Public DuckDB base database: `base_v3.duckdb.br`
- Per-store current price parquet files: `prices_per_store_v3/public_prices_<store_id>.parquet`
- Per-product history parquet files: `price_history_v3/price_history_<product_id>.parquet`
- Grocer frontend Meilisearch product index for search.

Script path:

```bash
skills/grocer-nz/scripts/cli.py
```

The script bootstraps `duckdb` via `uv` when the active Python does not already have it.

## When to Use

- Adam asks for historic supermarket pricing in NZ.
- Adam wants to compare prices across Woolworths, New World, PAK'nSAVE, Fresh Choice, Super Value, The Warehouse, etc.
- Adam wants a store id for a known store, e.g. Papakura.
- Adam wants price history for a known Grocer product id.
…

Read the whole file at its exact version.

How to install

The exact contents, by fingerprint

mdr add thecolab-ai/.skills/grocer-nz@sha256:879c9938cf0e229c

The line at the top of this page pins the label git:20260726.346f2a3, 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.

Badge

[![mdr](https://markdownregistry.com/badge/art_ijkc76xlww3aafmk.svg)](https://markdownregistry.com/a/art_ijkc76xlww3aafmk)

2 badge image fetches in 30 days. What the badge shows.

Versions

The registry has recorded 5 versions of this file, between May 31, 2026 and Jul 26, 2026, about one every 14 days.

version	committed	commit	size	audit
git:20260726.346f2a3 latest	2026-07-26	346f2a3	11,951 B	A	view · diff
git:20260723.a282dc5	2026-07-23	a282dc5	10,378 B	A	view · diff
git:20260719.1748a98	2026-07-19	1748a98	8,163 B	A	view · diff
git:20260531.c7e4f99	2026-05-31	c7e4f99	7,396 B	A	view · diff
git:20260531.1d1b80e	2026-05-31	1d1b80e	5,857 B	A	view

Audit of the latest version

A 17 of 17 checks passed. Fixed automatic checks with no AI involved, so the same checks give the 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 (11951 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

thecolab-ai/.skills · 33 stars · license MIT · pushed 2026-10-12 · branch main

API

GET https://markdownregistry.com/api/v1/artifacts/art_ijkc76xlww3aafmk
GET https://markdownregistry.com/api/v1/resolve?ref=thecolab-ai/.skills/grocer-nz
GET https://markdownregistry.com/api/v1/blob/879c9938cf0e229c5ad1bc8d154d07da245e496ac42d540e1832a18132304b5d

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.