Find all simple paths between two documents in the knowledge graph (max 20, direction-agnostic). Uses DFS with cycle prevention.
AI agents call knowledge_paths to retrieve information from Ralph Hero 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 relationships within a knowledge graph without side effects. It performs depth-first search to discover connections between documents, which is a read-only operation. No data is created, modified, deleted, or executed—only traversed and returned to the user.
From the tool's definition Tool description states it 'Find[s] all simple paths between two documents in the knowledge graph' with no mention of modification, deletion, or execution capabilities. The DFS algorithm with cycle prevention is used for graph traversal/querying only.
Attacks that exploit this kind of access
Find all simple paths between two documents in the knowledge graph (max 20, direction-agnostic). Uses DFS with cycle prevention. It is categorised as a Read tool in the Ralph Hero MCP Server, which means it retrieves data without modifying state.
Register the Ralph Hero MCP server in PolicyLayer and add a rule for knowledge_paths: 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 Ralph Hero. Nothing to install.
knowledge_paths 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 knowledge_paths 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 knowledge_paths. 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.
knowledge_paths is provided by the Ralph Hero MCP server (ralph-hero-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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