AI agents call get_mcp_capabilities to retrieve information from Blop without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This tool performs read-only inspection of the MCP server's metadata and configuration state. It queries and returns data about the server itself (version, flags, tool registry) without modifying, executing, or affecting any system state. It is purely informational, making it a Read category tool with low severity.
From the tool's definition The tool is described as an 'O(1) probe' that retrieves 'package version, surface flags, registered tool count, and canonical tool names.' These are all informational queries with no side effects.
Attacks that exploit this kind of access
O(1) probe: package version, surface flags, registered tool count, and canonical tool names. It is categorised as a Read tool in the Blop MCP Server, which means it retrieves data without modifying state.
Register the Blop MCP server in PolicyLayer and add a rule for get_mcp_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 Blop. Nothing to install.
get_mcp_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 get_mcp_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 get_mcp_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.
get_mcp_capabilities is provided by the Blop MCP server (n2400813g/blop-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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