What is signalk-apis?

An API integration for Signal K, a server that collects and shares live data from boats. It supports working with the server’s data model and domain-specific APIs as either a client or a provider.

Building software that reads, streams, or provides marine data through Signal K’s REST, WebSocket, and plugin-based APIs.

It helps developers choose the right Signal K interface instead of treating the two API families as successive versions. The input does not describe a specific implementation beyond that integration.

signalk-apis — Plugin for Claude Code by sailingnaturali/claude-skills

Install

Getting it into your agent

One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.

Clone the repo

git clone --depth 1 https://github.com/sailingnaturali/claude-skills

Made for: Claude Code.

Wrote this? Show the measurements

A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.

README.md

[![agentmods](https://agentmods.dev/badge/plugins/sailingnaturali/claude-skills/signalk-apis/github.svg)](https://agentmods.dev/plugins/sailingnaturali/claude-skills/signalk-apis)

Your own site

<a href="https://agentmods.dev/plugins/sailingnaturali/claude-skills/signalk-apis"><img src="https://agentmods.dev/badge/plugins/sailingnaturali/claude-skills/signalk-apis/github.svg" alt="Measured on agentmods" height="20"></a>

Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.

Your own site · 80×15

<a href="https://agentmods.dev/plugins/sailingnaturali/claude-skills/signalk-apis"><img src="https://agentmods.dev/badge/plugins/sailingnaturali/claude-skills/signalk-apis.svg" alt="Reviewed on agentmods" width="80" height="20"></a>

Per session not measured What this adds to a session before it is invoked.

When invoked not measured The manifest loads nothing itself; its 1 skill cost 140 tokens a session between them.

Security scan A 0 findings. A grade says what 26 rules found in the file — not that it is safe.

Origin original No closer match found in the catalogue.

Security

Grade A, and why

signalk-apis scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 1mo ago.

A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.

Nothing flagged

None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.

signalk-apis/.claude-plugin/plugin.json · 9 lines

What it actually says

{
  "name": "signalk-apis",
  "description": "Work with the Signal K server APIs as consumer or provider: v1 is the data-model API, v2 is domain APIs backed by provider plugins — different jobs, not versions of each other.",
  "version": "0.1.0",
  "author": { "name": "Dirk Wahrheit" },
  "license": "MIT",
  "keywords": ["signalk", "marine", "api", "rest", "websocket", "plugin"]
}

Contents

What it installs

The manifest is a name and a version. 1 skill travel with it, and installing the plugin installs all of them — 140 tokens a session between them. Each is measured on its own page, and each can be installed alone.

Skill signalk-apis A 140 tokens

Changes

What this file has done since we first saw it

Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.

1mo ago First seen · 9 lines scan A ec5feafceaaa

Subscribe to this mod's changes

signalk-apis is a plugin published in the GitHub repository sailingnaturali/claude-skills (3 stars, last pushed 14d ago), licensed MIT. Its token cost is not measured: this kind of file is read by the harness, not the model. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-09-07.

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