Recall: semantically search your second brain for relevant notes and context. Call recall automatically at the start of every conversation and every 3-4 messages.
AI agents call recall to retrieve information from Second Brain Cloudflare without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
The tool performs a semantic search/retrieval operation, returning matching notes and context. No data is created, modified, or deleted. The instruction to call it automatically indicates it's a passive read operation with no side effects.
From the tool's definition semantically search your second brain for relevant notes and context
Risk signalsBulk/mass operation — affects multiple targets
Documented attack patterns abuse exactly the kind of access recall gives an agent:
PolicyLayer is an MCP gateway — it sits between your AI agents and Second Brain Cloudflare, and nothing reaches the server without passing your rules. This is the rule we recommend for recall:
{
"version": "1",
"default": "deny",
"tools": {
"recall": {}
}
}recall is read-only, so it stays allowed — but everything else on the server is denied unless you say otherwise.
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Recall: semantically search your second brain for relevant notes and context. Call recall automatically at the start of every conversation and every 3-4 messages. It is categorised as a Read tool in the Second Brain Cloudflare MCP Server, which means it retrieves data without modifying state.
Register the Second Brain Cloudflare MCP server in PolicyLayer and add a rule for recall: 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 Second Brain Cloudflare. Nothing to install.
recall is a Read tool with low risk. Read-only tools are generally safe to allow by default.
Yes. Add a rate_limit block to the recall 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 recall. 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.
recall is provided by the Second Brain Cloudflare MCP server (rahilp/second-brain-cloudflare). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Deterministic rules across all 6 Second Brain Cloudflare tools. Per-identity grants. Full audit log. Live in minutes. Nothing to install.
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6 Second Brain Cloudflare tools catalogued and risk-classified — across an index of 42,500+ MCP servers.