Semantic search in memories
AI agents call search_memories to retrieve information from Spiderchat without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This tool retrieves and queries stored memory data without creating, modifying, deleting, or executing any external operations. Semantic search is a read-only operation with no side effects. The blast radius of misuse is minimal—an agent could only access existing memories it has permission to search, with no ability to alter state or trigger further actions.
From the tool's definition Tool name 'search_memories' and description 'Semantic search in memories' indicate retrieval and query operations only.
Attacks that exploit this kind of access
Semantic search in memories. It is categorised as a Read tool in the Spiderchat MCP Server, which means it retrieves data without modifying state.
Register the Spiderchat MCP server in PolicyLayer and add a rule for search_memories: 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 Spiderchat. Nothing to install.
search_memories 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_memories 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_memories. 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_memories is provided by the Spiderchat MCP server (spider-chat/spiderchat-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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