write_instance_memory
Create or update a memory entry on a subscribed instance. Read get_instance_memory first to reuse an existing key instead of creating a near-duplicate.
This record as markdown: /tools/io-github-proagentstore-platform/write-instance-memory.md
What write_instance_memory does on ProAgentStore
AI agents use write_instance_memory to create or update resources in ProAgentStore, usually the action step of a workflow, after the agent has gathered context. Every call changes real data in your ProAgentStore environment.
Why write_instance_memory is rated Medium
Modifies instance memory reversibly; requires knowledge of instance context but enables persistence of agent state.
From the tool's definition Create or update a memory entry on a subscribed instance.
Attacks that exploit this kind of access
The rule that runs write_instance_memory safely
PolicyLayer is an MCP gateway: it sits between your AI agents and ProAgentStore, and checks every tool call against a rule you set before the call runs. Nothing changes on the server itself. For write_instance_memory, this is the rule to start with:
write_instance_memory 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 ProAgentStore, apply this rule, and every write_instance_memory call is checked against it from then on.
Questions about write_instance_memory
Create or update a memory entry on a subscribed instance. Read get_instance_memory first to reuse an existing key instead of creating a near-duplicate. It is categorised as a Write tool in the ProAgentStore MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.
Register the ProAgentStore MCP server in PolicyLayer and add a rule for write_instance_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 ProAgentStore. Nothing to install.
write_instance_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 write_instance_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 write_instance_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.
write_instance_memory is provided by the ProAgentStore MCP server (https://mcp.proagentstore.online/mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
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