links

A guide for writing links that work correctly on the website, GitHub, package pages, or other places where repository text is shown.

In plain words
What is it for?
Use it when adding or editing URLs in specifications, READMEs, docstrings, published package documentation, and skills.
Why use it?
A link can be valid in the source repository but point to the wrong place after the text is published elsewhere.

Skill for Claude CodeCodex

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.

agentmods
npx agentmods add skills/gridaco/nothing/links
Any agent
npx skills add gridaco/nothing --skill links
Clone the repo
git clone --depth 1 https://github.com/gridaco/nothing

Made for: Claude Code, Codex.

Per session 71 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 896 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. Scan, not verified.
Origin original No closer match found in the catalogue.
Token cost

What it costs to keep this loaded

Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.

ModelPer sessionOnce invoked
Fable 5 $0.00071 $0.00896
Opus 5 $0.00036 $0.00448
Sonnet 5 $0.00014 $0.00179
Haiku 4.5 $0.00007 $0.00090

Measured 2d ago against content hash 3b3bfe7e1753, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

links 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 2d 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.

.agents/skills/links/SKILL.md · 62 lines

How it starts

The opening of the file, as written. The whole thing — 62 lines — stays where its author put it; the contents beside it link to each section on GitHub.

A link is correct or broken at the surface it is rendered on, for that surface's audience — not where the text lives in the repo. Before you write any link: (1) where is this text rendered? (2) who reads it there? (3) when they click, where does it resolve from that host — and is that the thing you meant?

Surfaces in this repo

Surface Lives in Audience
GitHub (repo browse) everything — incl. docs/wg/** (also published by this repo's www/ docs app, which resolves the same .md-suffixed relative links; GitHub remains the canonical host) engine developers
npm (npmjs.com) crates/grida-canvas-wasm package README package users
Raw / no host IDE, stack traces, compiled output whoever has it

First-party hosts

URL What
https://github.com/gridaco/nothing This repo. File → …/blob/main/<path>; dir → …/tree/main/<path>; main only, never a SHA
https://github.com/gridaco/grida The product monorepo (editor, packages, service docs). Same file/dir forms
https://grida.co The product · https://grida.co/docs = the product docs site (publishes grida's docs tree)

Decision table

Rendered in Target Use
anywhere in this repo anything in this repo (crates, docs/wg, fixtures, format) relative repo path — same host (GitHub) everywhere
anywhere in this repo a grida-repo file/dir absolute `https://github.com/gridaco/grida/blob
anywhere in this repo a published grida docs page (staying clusters: platform, ai, …) hosted URL https://grida.co/docs/<path>
npm package README anything in-repo absolute https://github.com/gridaco/nothing/blob/main/<path> — relative dies on npmjs.com
any external https://… as-is

Read the full file on GitHub · 62 lines

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.

  1. 2d ago First seen · 62 lines · 71 tokens per session scan A 3b3bfe7e1753

Subscribe to this mod's changes

links is a skill published in the GitHub repository gridaco/nothing (43 stars, last pushed 2d ago), licensed Apache-2.0. It adds 71 tokens to every session and 896 once invoked, about $0.0004 per session on Opus 5. 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 2026-08-30.

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