AI agents call search_messages to retrieve information from Paraglide without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This tool searches and retrieves message data without creating, modifying, deleting, or executing any operations. It is a pure read operation that returns matching messages based on search criteria. The case-insensitive substring matching confirms it is informational retrieval only.
From the tool's definition Tool description states 'Find messages by text content or key substring (case-insensitive)'. The verb 'Find' combined with 'search' in the tool name indicates a query/retrieval operation with no data modification.
Attacks that exploit this kind of access
Find messages by text content or key substring (case-insensitive). Use this when. It is categorised as a Read tool in the Paraglide MCP Server, which means it retrieves data without modifying state.
Register the Paraglide MCP server in PolicyLayer and add a rule for search_messages: 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 Paraglide. Nothing to install.
search_messages 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 search_messages 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 search_messages. 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.
search_messages is provided by the Paraglide MCP server (weshaze/paraglide-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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