detect_causal_cycles
3B.6 \u2014 Detect cycles in the causal subgraph rooted at seed. CAVEAT: treats prevents as a directed edge, not as logical negation \u2014 prevents+enables triangles ARE flagged.
This record as markdown: /tools/danielsimonjr-memory-mcp/detect-causal-cycles.md
What detect_causal_cycles does on Enhanced Knowledge Graph Memory Server
AI agents call detect_causal_cycles to retrieve information from Enhanced Knowledge Graph Memory Server without modifying anything. It is typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
Why detect_causal_cycles is rated Low
This tool performs graph analysis and cycle detection on an existing knowledge graph. It retrieves relationship information and reports patterns (cycles) without side effects. No data is created, modified, deleted, or externally executed. The caveat about how it treats 'prevents' edges is a behavioral note about the analysis algorithm, not evidence of side effects.
From the tool's definition Tool description indicates it 'detects cycles in the causal subgraph' — a query/analysis operation that examines existing graph structure and relationships without modifying data.
Attacks that exploit this kind of access
The rule that runs detect_causal_cycles safely
PolicyLayer is an MCP gateway: it sits between your AI agents and Enhanced Knowledge Graph Memory Server, and checks every tool call against a rule you set before the call runs. Nothing changes on the server itself. For detect_causal_cycles, this is the rule to start with:
detect_causal_cycles is read-only, so it stays allowed. Everything else on the server is denied unless you say otherwise.
The button opens the PolicyLayer dashboard: create your workspace, connect Enhanced Knowledge Graph Memory Server, apply this rule, and every detect_causal_cycles call is checked against it from then on.
Questions about detect_causal_cycles
3B.6 \u2014 Detect cycles in the causal subgraph rooted at seed. CAVEAT: treats prevents as a directed edge, not as logical negation \u2014 prevents+enables triangles ARE flagged. It is categorised as a Read tool in the Enhanced Knowledge Graph Memory Server MCP Server, which means it retrieves data without modifying state.
Register the Enhanced Knowledge Graph Memory Server MCP server in PolicyLayer and add a rule for detect_causal_cycles: 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 Enhanced Knowledge Graph Memory Server. Nothing to install.
detect_causal_cycles 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 detect_causal_cycles 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 detect_causal_cycles. 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.
detect_causal_cycles is provided by the Enhanced Knowledge Graph Memory Server MCP server (danielsimonjr/memory-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
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