Agent skill

API Link Builder

by AvaloniaUI in AvaloniaUI/avalonia-docs

Scans the /docs directory for opportunities to cross-link with API reference documentation in /api, and vice versa.

No licenceAuto-check passedFrontend & Design

Install API Link Builder

skills CLI
$ npx skills add AvaloniaUI/avalonia-docs --skill api-link-builder -a claude-code

Project install by default; add -g for ~/.claude/skills/.

GitHub CLI
$ gh skill install AvaloniaUI/avalonia-docs api-link-builder --agent claude-code

Project scope by default; add --scope user for a personal install. Needs GitHub CLI 2.90.0 or later (public preview).

Manual copy
$ git clone --depth 1 https://github.com/AvaloniaUI/avalonia-docs.git skills-src && mkdir -p .claude/skills && cp -r skills-src/.claude/skills/api-link-builder .claude/skills/api-link-builder && rm -rf skills-src

Use ~/.claude/skills/ instead of .claude/skills for a personal install. The folder must contain SKILL.md.

Claude Code skills documentation · loads skills from .claude/skills/

Facts

Skill name
api-link-builder
GitHub stars
166
Token cost
~3.1k tokens
SKILL.md length
1,423 words
Files
1
Skills in repo
5
Repo updated
First seen
Licence
None found

At a glance

Scans the /docs directory for opportunities to cross-link with API reference documentation in /api, and vice versa.

  • Works in 7 steps: Load the xref index → Determine scope → Scan doc pages for linking opportunities → …
  • Frontend & Design work in your project
  • SKILL.md covers Inputs, Key resources, Link format conventions and Workflow, plus 3 more sections
  • Reaches api-docs.avaloniaui.net

What it does

API Link Builder is an agent skill from AvaloniaUI/avalonia-docs. Scans the /docs directory for opportunities to cross-link with API reference documentation in /api, and vice versa. Creates bi-directional links between human-written docs and generated API pages. Invoke with /api-link-builder [optional-path-or-topic].

Its SKILL.md is about 3.1k tokens, which your agent loads only when the skill is triggered. It is a single SKILL.md file with no bundled scripts.

It sits in Frontend & Design. It works with Avalonia.

When your agent uses it

  • Frontend & Design work in your project

Example prompts

  • “Use the api-link-builder skill to scan the /docs directory for opportunities to cross-link with API reference documentation in /api, and vice versa”
  • “/api-link-builder”

Workflow steps

7 steps, taken from the step headings in SKILL.md.

  1. Load the xref index
  2. Determine scope
  3. Scan doc pages for linking opportunities
  4. Scan API pages for back-link opportunities
  5. Generate report
  6. Apply changes
  7. Verify changes

What it can do on your machine

Read from SKILL.md and the folder at commit 297e358. It shows what the files ask for, not the result of running them.

  • Tool permissions

    Pre-approves nothing: there is no allowed-tools line, so your agent's usual permission prompts apply.

    From allowed-tools in the SKILL.md frontmatter.

  • Runs code

    No scripts in the folder and no shell commands in SKILL.md (its code samples are markdown and mdx).

    From the folder's file list and the shell code blocks in SKILL.md.

  • Network

    Hosts in commands or code, which the agent is likely to contact:

    • api-docs.avaloniaui.net

    From URLs in SKILL.md, links to its own repository left out.

  • Credentials

    Names no API keys, tokens, secrets or passwords.

    From names ending in _API_KEY, _TOKEN, _SECRET, _KEY or _PASSWORD in SKILL.md.

Context cost

API Link Builder loads about 3.1k tokens when it runs. Until then it costs about 67 tokens; SKILL.md has 1,423 words of instructions outside code blocks.

Always · name and description, kept in context so the agent knows when to use it
~67
When it runs · the whole SKILL.md, loaded when a task matches
~3.1k

Estimates: characters ÷ 4, the usual rule of thumb; real counts depend on the model's tokenizer. Scripts and assets cost tokens only if the agent reads them.

Safety

Auto-check passed

The automated check found no risky patterns in SKILL.md.

Automated static check — not a guarantee. Review scripts before installing. It scans the text of SKILL.md for risky patterns (piping downloads into a shell, reading credential files, hidden Unicode, destructive commands); files beside SKILL.md are not scanned.

SKILL.md

Without a licence we can't republish the file, so here is its outline and opening line. It has 1,423 words (~3,115 tokens).

“Scan documentation pages and API reference pages to find and create bi-directional cross-links, producing a more integrated experience for users navigating between conceptual docs and API reference.”

— opening of SKILL.md by AvaloniaUI
name
api-link-builder
user-invocable
true

Read the full SKILL.md on GitHub

Files

Just SKILL.md in .claude/skills/api-link-builder of AvaloniaUI/avalonia-docs.

Open the folder on GitHubat commit 297e358

Compare with similar skills

API Link Builder next to the 5 skills that share the most tags, products or categories with it. Stars are the repository's; “used in” counts other GitHub owners with a copy.

API Link Builder compared with similar skills
SkillStarsUsed inTokensAuto-checkLicenceRepo updated
API Link Builder this skillAvaloniaUI/avalonia-docs166—~3.1kAutomated safety check: PassNone
Format StylePixeval/Pixeval3.2k—~1.2kAutomated safety check: PassGPL-3.0
Code StylePixeval/Pixeval3.2k—~730Automated safety check: PassGPL-3.0
Oneware Stylingone-ware/OneWare147—~1.1kAutomated safety check: PassApache-2.0
ToolsPixeval/Pixeval3.2k—~217Automated safety check: PassGPL-3.0
Wfa Avalonia UItautcony/ChapterTool113—~1.1kAutomated safety check: PassGPL-3.0

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Works with

Questions about API Link Builder

What does API Link Builder do?

Scans the /docs directory for opportunities to cross-link with API reference documentation in /api, and vice versa. API Link Builder is an agent skill from AvaloniaUI/avalonia-docs. Scans the /docs directory for opportunities to cross-link with API reference documentation in /api, and vice versa.

When should I use API Link Builder?

API Link Builder fits situations like: frontend & Design work in your project.

How do I install API Link Builder in Claude Code?

Run `npx skills add AvaloniaUI/avalonia-docs --skill api-link-builder -a claude-code`. Or copy the skill folder (.claude/skills/api-link-builder in AvaloniaUI/avalonia-docs) into .claude/skills/api-link-builder in your project. Claude Code loads it when a task matches its description.

How do I install API Link Builder in Codex?

Run `npx skills add AvaloniaUI/avalonia-docs --skill api-link-builder -a codex`. Or copy the skill folder (.claude/skills/api-link-builder in AvaloniaUI/avalonia-docs) into .agents/skills/api-link-builder in your project. Codex loads it when a task matches its description.

Can I use API Link Builder in Cursor, Gemini CLI or GitHub Copilot?

Cursor, Gemini CLI, GitHub Copilot and OpenCode also load SKILL.md folders. With the skills CLI, run `npx skills add AvaloniaUI/avalonia-docs --skill api-link-builder -a cursor` (or -a gemini-cli, github-copilot or opencode for the others). To copy it by hand, put the folder in .cursor/skills/api-link-builder, .gemini/skills/api-link-builder, .github/skills/api-link-builder and .opencode/skills/api-link-builder in your project.

What does API Link Builder need to run?

SKILL.md names no scripts, command-line tools or credentials: API Link Builder is instructions for the agent only.

Does API Link Builder access the network?

SKILL.md names 1 domain. In commands or code: api-docs.avaloniaui.net; the agent is likely to contact it when it follows the instructions. This is read from the text; nothing was executed.

Is API Link Builder safe to install?

Our automated static check of SKILL.md found no risky patterns, such as piping downloads into a shell, reading credential files or hidden Unicode. It is not a guarantee. Review the folder before installing.

What licence does API Link Builder use?

No licence was found for API Link Builder or its repository. Without one, default copyright applies: ask the author before reusing or redistributing it.

How many tokens does API Link Builder use?

About 3.1k tokens (SKILL.md is roughly 12k characters). Agents keep only the skill's name and description in context until a task matches; then they load SKILL.md in full.

What are the alternatives to API Link Builder?

Skills that share tags, products or a category with API Link Builder: Format Style (Pixeval/Pixeval, 3.2k stars), Code Style (Pixeval/Pixeval, 3.2k stars), Oneware Styling (one-ware/OneWare, 147 stars) and Tools (Pixeval/Pixeval, 3.2k stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.

Who maintains API Link Builder?

AvaloniaUI (a GitHub organization) maintains it in AvaloniaUI/avalonia-docs, which has 166 GitHub stars. The repository holds 5 skills in this directory. The repository was last updated on October 7, 2026.

Source: AvaloniaUI/avalonia-docs on GitHub. Facts on this page come from the repository at the commit we read; the author's words are quoted as theirs.