Find web platform features that were added in a specific browser version. Useful for understanding what new capabilities became available in a particular browser release. Args: - browser (string): Browser identifier (e.g.,
AI agents call compat_check_support 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 tool queries and retrieves historical browser compatibility information. It takes a browser identifier as input and returns data about features added in that version. There is no mutation of data, no code execution, no destructive operations, and no financial impact. This is purely a read/lookup operation on a compatibility database.
From the tool's definition Tool description states 'Find web platform features that were added in a specific browser version' and 'understanding what new capabilities became available'.
Attacks that exploit this kind of access
Find web platform features that were added in a specific browser version. Useful for understanding what new capabilities became available in a particular browser release. Args: - browser (string): Browser identifier (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_check_support: 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_check_support 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_check_support 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_check_support. 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_check_support 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.
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