Search BCD (Browser Compat Data) features by keyword. Use this to find the correct BCD identifier for compat_check. Searches across 15,000+ web platform features including APIs, CSS properties, HTML elements, JavaScript built-ins, and more. Args: - query (string): Search keyword (e.g.,
AI agents call compat_search to retrieve information from Web Compat without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This is a read-only query tool that searches and retrieves browser compatibility information. It has no destructive, write, execute, or financial capabilities. The search operation is a harmless data retrieval operation with minimal blast radius if misused by an AI agent.
From the tool's definition Tool performs search across BCD features by keyword and returns identifiers; described as 'Search BCD (Browser Compat Data) features by keyword' with no capability to modify, delete, or execute code.
Attacks that exploit this kind of access
Search BCD (Browser Compat Data) features by keyword. Use this to find the correct BCD identifier for compat_check. Searches across 15,000+ web platform features including APIs, CSS properties, HTML elements, JavaScript built-ins, and more. Args: - query (string): Search keyword (e.g.,. It is categorised as a Read tool in the Web Compat MCP Server, which means it retrieves data without modifying state.
Register the Web Compat MCP server in PolicyLayer and add a rule for compat_search: 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 Web Compat. Nothing to install.
compat_search 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 compat_search 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 compat_search. 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.
compat_search is provided by the Web Compat MCP server (shuji-bonji/web-compat-mcp). 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.
Teams ship this data inside their own products. See what a licence covers →