Promote a TASK-layer memory (temporary, with expiration) to RAW-layer (permanent, no expiration). Use when a memory originally stored as temporary context proves to be persistently relevant and should be kept indefinitely.
AI agents use promote_memory to create or update resources in Memsolus MCP Server — usually the action step of a workflow, after the agent has gathered context. Every call changes real data in your Memsolus MCP Server environment.
This tool modifies stored data by changing a memory's classification from temporary to permanent storage. While not creating new data (which would be basic Write) or deleting it (Destructive), it irreversibly alters the retention policy of a memory artifact, making it persist indefinitely when it would otherwise expire.
From the tool's definition The tool description explicitly states it 'Promote[s] a TASK-layer memory...to RAW-layer (permanent, no expiration)', which modifies the persistence state and metadata of existing memory records.
Attacks that exploit this kind of access
Promote a TASK-layer memory (temporary, with expiration) to RAW-layer (permanent, no expiration). Use when a memory originally stored as temporary context proves to be persistently relevant and should be kept indefinitely. It is categorised as a Write tool in the Memsolus MCP Server MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.
Register the Memsolus MCP Server MCP server in PolicyLayer and add a rule for promote_memory: 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 Memsolus MCP Server. Nothing to install.
promote_memory 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 promote_memory 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 promote_memory. 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.
promote_memory is provided by the Memsolus MCP Server MCP server (memsolus/mcp). 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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