crow_browser_scrape

Extract structured data from the page using CSS selectors. Define a schema of selector → field name mappings.

SERVERCrow SOURCEkh0pper/crow

Low RISK CLASS

Category Read

Parameters 00 required

Recommended Allowedsee the rule below

Registry record Grade F, identity unverified Pull the record →

This record as markdown: /tools/kh0pper-crow/crow-browser-scrape.md

WHAT IT DOES

What crow_browser_scrape does on Crow

AI agents call crow_browser_scrape to retrieve information from Crow without modifying anything. It is typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.

RISK

Why crow_browser_scrape is rated Low

This tool retrieves and extracts data from web pages using CSS selectors, which is a read-only operation with no side effects. However, the medium severity reflects that web scraping can expose sensitive data if the AI agent targets unintended pages or extracts private/confidential information, and the tool could be misused to extract credentials or personal data from forms or pages the user didn't intend to scrape.

From the tool's definition Tool name 'crow_browser_scrape' and description 'Extract structured data from the page using CSS selectors' indicate data retrieval with no modification or deletion.

Attacks that exploit this kind of access

RECOMMENDED RULE

The rule that runs crow_browser_scrape safely

PolicyLayer is an MCP gateway: it sits between your AI agents and Crow, and checks every tool call against a rule you set before the call runs. Nothing changes on the server itself. For crow_browser_scrape, this is the rule to start with:

crow_browser_scrape Allowed

crow_browser_scrape is read-only, so it stays allowed. Everything else on the server is denied unless you say otherwise.

View as policy code

policy.json

{
  "version": "1",
  "default": "deny",
  "tools": {
    "crow_browser_scrape": {}
  }
}

ALLOW ONLY THIS TOOL → Instant setup, no code required.

The button opens the PolicyLayer dashboard: create your workspace, connect Crow, apply this rule, and every crow_browser_scrape call is checked against it from then on.

FAQ

Questions about crow_browser_scrape

What does the crow_browser_scrape tool do? +

Extract structured data from the page using CSS selectors. Define a schema of selector → field name mappings. It is categorised as a Read tool in the Crow MCP Server, which means it retrieves data without modifying state.

How do I enforce a policy on crow_browser_scrape? +

Register the Crow MCP server in PolicyLayer and add a rule for crow_browser_scrape: allow, deny, rate-limit, or require approval. Point your MCP client at the PolicyLayer proxy URL and the rule is enforced on every call, before it reaches Crow. Nothing to install.

What risk level is crow_browser_scrape? +

crow_browser_scrape is a Read tool with low risk. Read-only tools are generally safe to allow by default.

Can I rate-limit crow_browser_scrape? +

Yes. Add a rate_limit block to the crow_browser_scrape rule in your PolicyLayer policy. For example, setting max: 10 and window: 60 limits the tool to 10 calls per minute. Rate limits are tracked per agent session and reset automatically.

How do I block crow_browser_scrape completely? +

Set action: deny in the PolicyLayer policy for crow_browser_scrape. The AI agent will receive a policy violation error and cannot call the tool. You can also include a reason field to explain why the tool is blocked.

What MCP server provides crow_browser_scrape? +

crow_browser_scrape is provided by the Crow MCP server (kh0pper/crow). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.

KEEP EXPLORING

More on Crow, and thousands of servers like it.

This server

All 587 Crow tools →

Across the catalogue

browser_extract_text on Percepta MCP Server → The MCP Attack Database →

Guides

Roll out MCP under one policy →Data exfiltration →MCP token cost →