unlink

Remove a relationship link between two memories by ID. Use when a link is incorrect or no longer relevant. Get the IDs from recall or connections first.

SERVERSecond Brain Cloudflare SOURCErahilp/second-brain-cloudflare

Critical RISK CLASS

Category Destructive

Parameters 00 required

Recommended Hiddensee the rule below

Registry record Grade F, identity unverified Pull the record →

This record as markdown: /tools/rahilp-second-brain-cloudflare/unlink.md

WHAT IT DOES

What unlink does on Second Brain Cloudflare

AI agents call unlink to permanently remove resources in Second Brain Cloudflare, typically in cleanup and lifecycle workflows. It does its job in a single call, and there is no undo.

RISK

Why unlink is rated Critical

Unlinking removes a relationship between memories. While it doesn't delete the memories themselves, removing a link is an irreversible action (or at least not easily reversible without knowing the original link existed), and the tool description does not mention any undo capability. The blast radius is medium — misuse could corrupt the knowledge graph by severing valid semantic connections between memories.

From the tool's definition Remove a relationship link between two memories... when a link is incorrect or no longer relevant

Attacks that exploit this kind of access

RECOMMENDED RULE

The rule that runs unlink safely

PolicyLayer is an MCP gateway: it sits between your AI agents and Second Brain Cloudflare, and checks every tool call against a rule you set before the call runs. Nothing changes on the server itself. For unlink, this is the rule to start with:

unlink Hidden

unlink is removed from the agent's tool list entirely, so the agent never calls it. The rest of the server keeps working.

View as policy code

policy.json

{
  "version": "1",
  "default": "deny",
  "hide": [
    "unlink"
  ]
}

RESTRICT THIS TOOL → Instant setup, no code required.

The button opens the PolicyLayer dashboard: create your workspace, connect Second Brain Cloudflare, apply this rule, and every unlink call is checked against it from then on.

FAQ

Questions about unlink

What does the unlink tool do? +

Remove a relationship link between two memories by ID. Use when a link is incorrect or no longer relevant. Get the IDs from recall or connections first. It is categorised as a Destructive tool in the Second Brain Cloudflare MCP Server, which means it can permanently delete or destroy data. Block by default and require explicit approval.

How do I enforce a policy on unlink? +

Register the Second Brain Cloudflare MCP server in PolicyLayer and add a rule for unlink: 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.

What risk level is unlink? +

unlink is a Destructive tool with critical risk. Critical-risk tools should be blocked by default and only enabled with explicit human approval.

Can I rate-limit unlink? +

Yes. Add a rate_limit block to the unlink 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.

How do I block unlink completely? +

Set action: deny in the PolicyLayer policy for unlink. 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.

What MCP server provides unlink? +

unlink 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.

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