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Subagent

Geepers Links

Validates URLs, detects broken links, updates redirects to final destinations, and enriches resource collections with accurate descriptions. Use when checking link health in HTML/Markdown or curating a link directory. Trigger with \"check the links\", \"fix broken URLs\".

Type
Subagent
GitHub stars
2.8k
License
MIT
Repo last updated
Sep 27, 2026
Model
sonnet
Version
1.0.0
Author
Jeremy Longshore <[email protected]>

What Geepers Links is

Geepers Links is a subagent published in the jeremylongshore/tons-of-skills-marketplace repository on GitHub, which has about 2.8k stars. The repository describes itself as: “Model-agnostic agent-skills platform with a harness-free canonical layer, verified adapters, and the ccpi package manager. Explore at tonsofskills.com.”

A subagent is a specialist assistant that Claude can hand part of a task to. It is a markdown file whose frontmatter sets a name, a description that tells Claude when to delegate, and optionally the tools and model it may use; the body becomes the subagent's own system prompt.

Because a subagent works in its own context, it keeps the main conversation focused: Claude can send a narrow job, such as a review or a specialised analysis, to Geepers Links and get back a compact result.

How to install Geepers Links

Claude Code

  1. Download geepers_links.md from the repository.
  2. Save it to ~/.claude/agents/ to use it in every project, or to .claude/agents/ inside one project to share it through version control.
  3. Claude Code watches these folders, so the subagent is usually available right away. Ask Claude to use it by name, or @-mention it to make sure it runs.

Claude Cowork

  1. Cowork loads subagents through plugins. If the repository is packaged as a plugin marketplace, add it under Customize → Plugins → Add marketplace and install the plugin that contains this subagent.
  2. Otherwise, bundle the file into your own plugin's agents/ folder and upload it from Customize → Plugins.

New to extending Cowork? Our plugins guide and Customize guide explain how skills, plugins, and connectors fit together.

Inside the source file

An excerpt from plugins/community/geepers-agents/agents/geepers_links.md, shared under the repository's MIT license. Read the full file on GitHub.

Examples

Example 1

Context: Link validation user: "Can you check the links in /accessibility/index.html?" assistant: "I'll use geepers_links to validate all URLs and fix broken ones."

Example 2

Context: Resource enhancement user: "I added accessibility tools to the list, can you organize and expand it?" assistant: "Let me use geepers_links to validate, organize, and research additional resources."

Mission

You are the Link Curator - validating URLs, detecting broken links, and maintaining curated resource collections with accurate, enriched descriptions.

Output Locations

  • Reports: ~/geepers/reports/by-date/YYYY-MM-DD/links-{file}.md
  • Recommendations: Append to ~/geepers/recommendations/by-project/{project}.md

Validation Process

Link Checking

# Check single URL
curl -sI "https://example.com" | head -1

# Check all links in file
grep -oP 'href="\K[^"]+' file.html | while read url; do
  status=$(curl -sI "$url" 2>/dev/null | head -1)
  echo "$url: $status"
done

Status Code Handling

Link Quality Checklist

  • All links resolve (200 or valid redirect)
  • No broken links (404)
  • HTTPS preferred over HTTP
  • Link text is descriptive
  • No orphaned anchors
  • External links open in new tab (target="_blank")
  • Rel="noopener" for security

Enrichment Tasks

  • Add missing descriptions
  • Update outdated URLs
  • Research related resources
  • Categorize/organize links
  • Add publication dates where relevant

Coordination Protocol

Delegates to:

  • None (specialized task)

Called by:

  • geepers_data: For source URL validation
  • geepers_a11y: For link accessibility
  • Manual invocation

Shares data with:

  • geepers_status: Link health metrics

Before you install

  • Read the whole file first. Skills, commands, and subagents are instructions Claude will follow, so make sure they match what you want.
  • Check which tools, scripts, or MCP servers it uses. Local servers and scripts run with your permissions.
  • Try it in a test project or a copy of your files before pointing it at real work.
  • Pin the version you tested, and review changes before updating.
  • Watch for instructions that fetch web content or run shell commands; those are where prompt injection risks start. See our prompt injection guide.

FAQ

What is Geepers Links?

Geepers Links is a subagent for Claude Code and Claude Cowork from the jeremylongshore/tons-of-skills-marketplace repository on GitHub. Validates URLs, detects broken links, updates redirects to final destinations, and enriches resource collections with accurate descriptions. Use when checking link health in HTML/Markdown or curating a link directory. Trigger with \"check the links\", \"fix broken URLs\".

How do I install Geepers Links in Claude Code?

Download geepers_links.md from the repository. Save it to ~/.claude/agents/ to use it in every project, or to .claude/agents/ inside one project to share it through version control. Claude Code watches these folders, so the subagent is usually available right away. Ask Claude to use it by name, or @-mention it to make sure it runs.

Can I use Geepers Links in Claude Cowork?

Cowork loads subagents through plugins. If the repository is packaged as a plugin marketplace, add it under Customize → Plugins → Add marketplace and install the plugin that contains this subagent. Otherwise, bundle the file into your own plugin's agents/ folder and upload it from Customize → Plugins.

Is Geepers Links safe to install?

It is a third-party community resource, not reviewed by Anthropic or this site. Read the source file first, check which tools and connectors it uses, and install only from sources you trust.

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Listing data comes from the public GitHub repository and was last checked in September 2026. Excerpts are © their authors and shared under MIT. This directory is independent and not affiliated with Anthropic or the resource's authors.