Get the capabilities of a browser server session. Returns version info, supported commands, features, and device emulation support. Use this to check for version mismatches or feature availability.
AI agents call browser_get_capabilities to retrieve information from MCProxy without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This tool retrieves metadata about browser capabilities and supported features. It performs a query operation that does not modify state, execute commands, trigger external actions, delete data, or move money. While it runs within a browser automation context, the tool itself merely inspects and returns information about capabilities, making it a straightforward Read operation.
From the tool's definition Tool name 'browser_get_capabilities' and description stating it 'Returns version info, supported commands, features, and device emulation support' with use case 'check for version mismatches or feature availability' indicates a read-only query operation with…
Attacks that exploit this kind of access
Get the capabilities of a browser server session. Returns version info, supported commands, features, and device emulation support. Use this to check for version mismatches or feature availability. It is categorised as a Read tool in the MCProxy MCP Server, which means it retrieves data without modifying state.
Register the MCProxy MCP server in PolicyLayer and add a rule for browser_get_capabilities: 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 MCProxy. Nothing to install.
browser_get_capabilities 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 browser_get_capabilities 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 browser_get_capabilities. 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.
browser_get_capabilities is provided by the MCProxy MCP server (saladtechnologies/mcproxy). 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 →