PageCrawl publishes a plugin with two skills that teach AI agents how to use PageCrawl well. The MCP server gives your assistant PageCrawl's tools. The skills give it the know-how: which tracking mode suits a page, which tool answers a question in one call, when to ask before acting, and how to write a useful summary of what changed.
The plugin and skills are free, open source under the MIT licence, and published at github.com/pagecrawl/skills. They work on every PageCrawl plan, including Free.
What do the skills do?
- pagecrawl helps any agent use PageCrawl from a conversation. It sets up monitors with the right tracking mode, reads what changed with the fewest calls, leads with the changes that matter, goes through your unseen changes with you, checks monitoring health, and sets up webhooks and scheduled reports.
- pagecrawl-api helps when you write code against PageCrawl. It covers creating monitors through the REST API, reading history and diffs, verifying webhook signatures, and pushing values into data sources.
The skills also keep the agent careful. It asks before deleting monitors or clearing changes, never asks for site passwords, treats captured page content as data rather than instructions (and tells you when a page holds instructions aimed at it), and lets PageCrawl do the fetching instead of loading pages itself.
How do I install them?
Claude Code. Inside a session, run:
/plugin install pagecrawl --marketplace pagecrawl/skillsThe plugin includes the MCP connection. Sign in once: run /mcp, choose the PageCrawl server, and approve access in the browser window that opens. Connect PageCrawl only once: a connection you added earlier with any address other than https://mcp.pagecrawl.io/mcp loads beside the plugin and lists every tool twice, so remove it (claude mcp remove pagecrawl for one added with claude mcp add).
Plugins from this marketplace do not update on their own. To get a new version, run claude plugin update pagecrawl@pagecrawl, or turn on auto-update once: run /plugin, open Marketplaces, select pagecrawl and choose Enable auto-update.
Claude on the web or desktop, and Cowork. In Customize > Plugins, choose Add > Add marketplace, enter pagecrawl/skills and add PageCrawl, then connect it from the plugin's Connectors tab. To get new versions, select Check for updates, or turn on Sync automatically for the marketplace. If your organization does not let you add marketplaces, download pagecrawl-plugin.zip from the latest release and use Add > Upload plugin instead. An uploaded copy never updates, so upload each new release again.
ChatGPT. Connect PageCrawl first, as described in AI Assistants (MCP Server). On Business, Enterprise, Healthcare and Edu plans, download pagecrawl-skill.zip from the latest release, then in ChatGPT open Plugins, select the Skills tab, click Create and choose Upload from your computer. ChatGPT scans an uploaded skill before it becomes available.
Codex. Copy the folders under skills/ into ~/.agents/skills/, then run codex mcp add pagecrawl --url https://mcp.pagecrawl.io/mcp, which opens the PageCrawl sign-in. If it does not, run codex mcp login pagecrawl. To update the skills, copy the folders again from a new release.
VS Code and GitHub Copilot. Both install the repository as a plugin, with the skills and the PageCrawl connection together. In VS Code, run Chat: Install Plugin From Source from the Command Palette and enter https://github.com/pagecrawl/skills. In GitHub Copilot CLI, run copilot plugin install pagecrawl/skills, and copilot plugin update pagecrawl for new versions. Sign in to PageCrawl when you are asked, and keep one PageCrawl connection: if you added the server by hand before, remove that entry.
Cursor, Antigravity, Gemini CLI, OpenCode, OpenClaw and other agents. Run npx skills add pagecrawl/skills -g. The -g flag installs the skills for your user account; without it, the installer asks whether to add them to the current project or to your account. Run npx skills update -g to get new versions. Then add the MCP server in your agent's settings, with the address and sign-in details in AI Assistants (MCP Server).
Any other agent that reads Agent Skills. Copy the folders under skills/ into its skills directory and connect the MCP server.
What can I ask once it is installed?
- "Watch this product page and tell me when the price changes."
- "Monitor these five competitor pricing pages weekly and tag them competitors."
- "What changed on my monitored pages this week? Lead with what matters."
- "Go through my unseen changes with me."
- "Which of my monitors are failing or never change?"
- "Write an endpoint that receives PageCrawl webhooks and verifies the signature."
You do not need to name the skill. The agent loads it when a request is about monitoring pages or about PageCrawl.
What data do the skills send?
None. The skills are instructions: Markdown files with no scripts or background processes. When your agent follows them, it calls PageCrawl's MCP server or REST API with the access you approved, to create monitors and read your monitoring data. Disconnecting the MCP server or revoking your API token in Settings > API access removes that access.
Troubleshooting
The agent does not use PageCrawl. Check that the MCP server is connected and turned on for the conversation, then mention PageCrawl in your request.
PageCrawl's tools appear twice. You have both the plugin's connection and an older one. Remove the older entry. A connection made with any address other than https://mcp.pagecrawl.io/mcp counts as a separate server, even when it reaches the same account.
Claude Code says PageCrawl needs authentication. The plugin is installed but not signed in yet. Run /mcp, choose the PageCrawl server and sign in. There is no need to add the server again.
The agent says it cannot find a monitor. Ask it to list your workspaces. The agent sees only the workspaces you have been added to; the team owner or an Administrator can add you on the Members page in PageCrawl's settings.