AI agents use memory to create or update resources in OpenChrome — usually the action step of a workflow, after the agent has gathered context. Every call changes real data in your OpenChrome environment.
The tool allows management of domain knowledge, which suggests write operations (create/update) on stored data. Without seeing the specific actions available, the most reasonable interpretation is that this performs reversible data modifications rather than destructive operations, code execution, or financial transactions.
From the tool's definition Tool name is 'memory' with description 'Manage domain knowledge. Actions:' (incomplete description). The term 'manage' implies create, update, or modify operations on stored knowledge.
Documented attack patterns abuse exactly the kind of access memory gives an agent:
PolicyLayer is an MCP gateway — it sits between your AI agents and OpenChrome, and nothing reaches the server without passing your rules. This is the rule we recommend for memory:
{
"version": "1",
"default": "deny",
"tools": {
"memory": {
"limits": [
{
"counter": "memory_rate",
"window": "minute",
"max": 30,
"scope": "grant"
}
]
}
}
}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.
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Manage domain knowledge. Actions:. It is categorised as a Write tool in the OpenChrome MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.
Register the OpenChrome MCP server in PolicyLayer and add a rule for 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 OpenChrome. Nothing to install.
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 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 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.
memory is provided by the OpenChrome MCP server (shaun0927/openchrome). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Deterministic rules across all 106 OpenChrome tools. Per-identity grants. Full audit log. Live in minutes. Nothing to install.
Free to start. No card required.
106 OpenChrome tools catalogued and risk-classified — across an index of 42,500+ MCP servers.