Search for decisions using hybrid search (graph + vector + reranking)
AI agents call query_decisions to retrieve information from Faulkner DB without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This tool retrieves or queries data from the temporal knowledge graph without side effects. It performs a search operation using multiple indexing strategies (graph-based, vector embeddings, reranking) but does not create, modify, delete, or execute external operations.
From the tool's definition Tool name and description indicate 'Search for decisions' with hybrid search capabilities across graph, vector, and reranking.
Attacks that exploit this kind of access
Search for decisions using hybrid search (graph + vector + reranking). It is categorised as a Read tool in the Faulkner DB MCP Server, which means it retrieves data without modifying state.
Register the Faulkner DB MCP server in PolicyLayer and add a rule for query_decisions: 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 Faulkner DB. Nothing to install.
query_decisions 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 query_decisions 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 query_decisions. 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.
query_decisions is provided by the Faulkner DB MCP server (platano78/faulkner-db). 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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