Analyze JavaScript and CSS coverage to identify unused code and optimization opportunities. Uses Chrome DevTools Protocol Coverage API to provide detailed insights into code usage.
AI agents call webtool_coverage_analysis to retrieve information from Webtools MCP Server without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This is a passive analysis and auditing tool that reads coverage metrics from Chrome DevTools. It retrieves and reports data about code usage patterns without executing arbitrary code, modifying resources, or causing side effects. The function is informational only, similar to other sibling tools like webtool_lighthouse and webtool_performance_trace, which are also read-only audit utilities.
From the tool's definition Tool description states it 'Analyze[s]' coverage to 'identify unused code and optimization opportunities' using 'Chrome DevTools Protocol Coverage API to provide detailed insights' — purely analytical with no modification, deletion, or execution of code.
Attacks that exploit this kind of access
Analyze JavaScript and CSS coverage to identify unused code and optimization opportunities. Uses Chrome DevTools Protocol Coverage API to provide detailed insights into code usage. It is categorised as a Read tool in the Webtools MCP Server MCP Server, which means it retrieves data without modifying state.
Register the Webtools MCP Server MCP server in PolicyLayer and add a rule for webtool_coverage_analysis: 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 Webtools MCP Server. Nothing to install.
webtool_coverage_analysis is a Read tool with low risk. Read-only tools are generally safe to allow by default.
Yes. Add a rate_limit block to the webtool_coverage_analysis 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.
Set action: deny in the PolicyLayer policy for webtool_coverage_analysis. 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.
webtool_coverage_analysis is provided by the Webtools MCP Server MCP server (misterboe/webtools-mcp-server). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Every MCP server has a record like this.
Type a name, get the same breakdown: verified identity, auth posture, risk grade, capabilities, recommended policy.
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