add_exclusion_rule
v2.1.0 \u2014 Add a content-pattern exclusion rule (do_not_remember). Hard-deletes existing matches (per
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What add_exclusion_rule does on Enhanced Knowledge Graph Memory Server
AI agents use add_exclusion_rule to create or update resources in Enhanced Knowledge Graph Memory Server, usually the action step of a workflow, after the agent has gathered context. Every call changes real data in your Enhanced Knowledge Graph Memory Server environment.
Why add_exclusion_rule is rated Medium
An AI agent can call add_exclusion_rule faster than any human can review: one bad instruction and it creates or modifies resources in Enhanced Knowledge Graph Memory Server by the hundred, each call as confident as the last.
Attacks that exploit this kind of access
The rule that runs add_exclusion_rule 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 add_exclusion_rule, this is the rule to start with:
add_exclusion_rule 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.
The button opens the PolicyLayer dashboard: create your workspace, connect Enhanced Knowledge Graph Memory Server, apply this rule, and every add_exclusion_rule call is checked against it from then on.
Questions about add_exclusion_rule
v2.1.0 \u2014 Add a content-pattern exclusion rule (do_not_remember). Hard-deletes existing matches (per. It is categorised as a Write tool in the Enhanced Knowledge Graph Memory Server MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.
Register the Enhanced Knowledge Graph Memory Server MCP server in PolicyLayer and add a rule for add_exclusion_rule: 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.
add_exclusion_rule 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 add_exclusion_rule 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 add_exclusion_rule. 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.
add_exclusion_rule 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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