Search the Graphiti knowledge graph for relevant facts. Args: query: The search query group_ids: Optional list of group IDs to filter results max_facts: Maximum number of facts to return (default: 10) center_node_uuid: Optional UUID of a node to center the search around
AI agents call search_facts to retrieve information from Graphiti MCP Server 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 a knowledge graph stored in Neo4j without modifying, deleting, or executing external operations. It is purely informational with no capability to create, modify, or destroy data. The severity is low because misuse would only expose existing information rather than cause damage or data loss.
From the tool's definition Tool name 'search_facts' and description 'Search the Graphiti knowledge graph for relevant facts' with parameters for querying and filtering (query, group_ids, max_facts, center_node_uuid) indicate a retrieval operation with no side effects.
Documented attack patterns abuse exactly the kind of access search_facts gives an agent:
PolicyLayer is an MCP gateway — it sits between your AI agents and Graphiti MCP Server, and nothing reaches the server without passing your rules. This is the rule we recommend for search_facts:
{
"version": "1",
"default": "deny",
"tools": {
"search_facts": {}
}
}search_facts is read-only, so it stays allowed — but everything else on the server is denied unless you say otherwise.
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Search the Graphiti knowledge graph for relevant facts. Args: query: The search query group_ids: Optional list of group IDs to filter results max_facts: Maximum number of facts to return (default: 10) center_node_uuid: Optional UUID of a node to center the search around. It is categorised as a Read tool in the Graphiti MCP Server MCP Server, which means it retrieves data without modifying state.
Register the Graphiti MCP Server MCP server in PolicyLayer and add a rule for search_facts: 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 Graphiti MCP Server. Nothing to install.
search_facts 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_facts 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_facts. 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_facts is provided by the Graphiti MCP Server MCP server (rawr-ai/mcp-graphiti). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Deterministic rules across all 8 Graphiti MCP Server tools. Per-identity grants. Full audit log. Live in minutes. Nothing to install.
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8 Graphiti MCP Server tools catalogued and risk-classified — across an index of 42,500+ MCP servers.