Perform hybrid search combining FTS5 keyword search and semantic search. Best of both worlds - finds exact keyword matches AND conceptually related content. Returns results ranked by weighted combination of both scores.
AI agents call hybrid_search to retrieve information from TDZ C64 Knowledge without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
The hybrid_search tool retrieves and ranks pre-indexed documentation without side effects. It combines full-text and semantic search to return ranked results, which is purely informational retrieval. No data is created, modified, deleted, or executed. This is a straightforward Read operation with minimal security risk—misuse would only return irrelevant search results, not compromise system integrity or data.
From the tool's definition Tool description states it 'Perform[s] hybrid search combining FTS5 keyword search and semantic search' and 'Returns results ranked by weighted combination of both scores.' These are query and retrieval operations with no modification, creation, deletion, or…
Attacks that exploit this kind of access
Perform hybrid search combining FTS5 keyword search and semantic search. Best of both worlds - finds exact keyword matches AND conceptually related content. Returns results ranked by weighted combination of both scores. It is categorised as a Read tool in the TDZ C64 Knowledge MCP Server, which means it retrieves data without modifying state.
Register the TDZ C64 Knowledge MCP server in PolicyLayer and add a rule for hybrid_search: 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 TDZ C64 Knowledge. Nothing to install.
hybrid_search 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 hybrid_search 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 hybrid_search. 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.
hybrid_search is provided by the TDZ C64 Knowledge MCP server (michaeltroelsen/tdz-c64-knowledge). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
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