nz-tides-surf SKILL.md skillA

nz-tides-surf 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/nz-tides-surf@git:20261011.02b5609

Pins git:20261011.02b5609 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/nz-tides-surf/SKILL.md
Versions recorded: 3
Latest version: git:20261011.02b5609, committed Oct 11, 2026
First version recorded: May 23, 2026
Size: 8,052 bytes
Repository stars: 33
License: MIT

Query New Zealand LINZ tide predictions, LINZ standard-port tidal levels, and SwellMap surf forecasts through a lightweight read-only CLI. Use when the task involves NZ tide times, next high/low tide, standard-port levels such as MHWS, MSL, HAT or LAT, surf forecasts, swell trend, or choosing the best nearby surf break for a drive.

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

# NZ Tides + Surf

## Goal

Query live New Zealand tide and surf forecast data through a small deterministic CLI with human-readable and JSON output, without login, browser automation, account cookies, or API keys.

The main workflow is answering "is Piha worth a drive tomorrow morning?" by combining official LINZ tide predictions with SwellMap surf ratings, wave height, swell period, swell direction, and wind.

## Use this when

- A user asks for tide times at a New Zealand port or surf beach
- A user asks for the next high tide or low tide
- A user asks for a surf forecast at a known NZ break
- A user wants to compare breaks in Auckland, Coromandel, Gisborne, or Wellington
- A workflow needs machine-readable tide/surf rows for trip planning

## Do not use this for

- Safety-critical boating, swimming, or surf rescue decisions without checking the source sites directly
- Maritime warnings, official weather watches, or severe weather alerts
- Authenticated Surfline features, subscriptions, cameras, or personalised forecasts
- MetOcean/MetService point marine API data when an API key is available; use `metservice-nz` for that
…

Read the whole file at its exact version.

How to install

The exact contents, by fingerprint

mdr add thecolab-ai/.skills/nz-tides-surf@sha256:a7d1dced8abba519

The line at the top of this page pins the label git:20261011.02b5609, 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_hxuhwotsqmm6q722.svg)](https://markdownregistry.com/a/art_hxuhwotsqmm6q722)

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

Versions

The registry has recorded 3 versions of this file, between May 23, 2026 and Oct 11, 2026, about one every 71 days.

version	committed	commit	size	audit
git:20261011.02b5609 latest	2026-10-11	02b5609	8,052 B	A	view · diff
git:20260719.1748a98	2026-07-19	1748a98	6,463 B	A	view · diff
git:20260523.6432f6b	2026-05-23	6432f6b	5,638 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 (8052 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_hxuhwotsqmm6q722
GET https://markdownregistry.com/api/v1/resolve?ref=thecolab-ai/.skills/nz-tides-surf
GET https://markdownregistry.com/api/v1/blob/a7d1dced8abba51980143260f3d79c6bedb61692356f7fbe14766552c27b0ff3

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.