AI agents use create_relation to create or update resources in Mnemex — usually the action step of a workflow, after the agent has gathered context. Every call changes real data in your Mnemex environment.
Without explicit documentation, 'create_relation' most likely creates new data entries or modifies the memory graph by adding relationships. This is a write operation (reversible modification) rather than read-only. It is not destructive since relations can typically be removed.
From the tool's definition Tool name 'create_relation' suggests creating or establishing a relationship/link within the memory system. In the context of a memory management system (Mnemex), this would create new data structures or connections within the memory graph.
Documented attack patterns abuse exactly the kind of access create_relation gives an agent:
PolicyLayer is an MCP gateway — it sits between your AI agents and Mnemex, and nothing reaches the server without passing your rules. This is the rule we recommend for create_relation:
{
"version": "1",
"default": "deny",
"tools": {
"create_relation": {
"limits": [
{
"counter": "create_relation_rate",
"window": "minute",
"max": 30,
"scope": "grant"
}
]
}
}
}create_relation stays usable, but capped — an agent stuck in a loop can't make hundreds of changes a minute. Everything else on the server is denied unless you say otherwise.
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create_relation. It is categorised as a Write tool in the Mnemex MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.
Register the Mnemex MCP server in PolicyLayer and add a rule for create_relation: 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 Mnemex. Nothing to install.
create_relation is a Write tool with medium risk. Write tools should be rate-limited to prevent accidental bulk modifications.
Yes. Add a rate_limit block to the create_relation 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 create_relation. 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.
create_relation is provided by the Mnemex MCP server (prefrontal-systems/cortexgraph). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Deterministic rules across all 13 Mnemex tools. Per-identity grants. Full audit log. Live in minutes. Nothing to install.
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13 Mnemex tools catalogued and risk-classified — across an index of 42,500+ MCP servers.