read_query
AI agents call read_query to retrieve information from API Registry MCP Server without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
The name 'read_query' indicates querying/retrieving data without modification. Sibling tools like 'list_tables', 'list_prompts', and 'retrieve_knowledge' support this interpretation as retrieval operations. The empty description lowers confidence slightly, but the consistent naming pattern and registry context indicate this is a Read operation with minimal blast radius.
From the tool's definition Tool name 'read_query' strongly implies a read-only operation. The description is empty, but naming convention and context within an 'API Registry MCP Server' for 'discovery' and 'management' suggests data retrieval.
Attacks that exploit this kind of access
read_query. It is categorised as a Read tool in the API Registry MCP Server MCP Server, which means it retrieves data without modifying state.
Register the API Registry MCP Server MCP server in PolicyLayer and add a rule for read_query: 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 API Registry MCP Server. Nothing to install.
read_query 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 read_query 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 read_query. 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.
read_query is provided by the API Registry MCP Server MCP server (lucamilletti99/dataverse_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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