update_entity
\u03B7.5.5.c \u2014 Update an entity with optional optimistic concurrency control. Pass expectedVersion to assert the live entity is at that version; throws VersionConflictError on mismatch. Omit for legacy last-write-wins. OCC-guarded writes auto-increment version.
This record as markdown: /tools/danielsimonjr-memory-mcp/update-entity.md
What update_entity does on Enhanced Knowledge Graph Memory Server
AI agents use update_entity 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 update_entity is rated Medium
An AI agent can call update_entity 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 update_entity 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 update_entity, this is the rule to start with:
update_entity 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 update_entity call is checked against it from then on.
Questions about update_entity
\u03B7.5.5.c \u2014 Update an entity with optional optimistic concurrency control. Pass expectedVersion to assert the live entity is at that version; throws VersionConflictError on mismatch. Omit for legacy last-write-wins. OCC-guarded writes auto-increment version. 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 update_entity: 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.
update_entity 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 update_entity 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 update_entity. 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.
update_entity 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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