list-pin

Manage pinned events (NIP-51, kind 10001). Add or remove event IDs from your pin list.

SERVERNostr Bray SOURCEnostr-bray

Medium RISK CLASS

Category Write

Parameters 00 required

Recommended Rate-limitedsee the rule below

Registry record Grade F, identity unverified Pull the record →

This record as markdown: /tools/dev-forgesworn-bray/list-pin.md

WHAT IT DOES

What list-pin does on Nostr Bray

AI agents use list-pin to create or update resources in Nostr Bray, usually the action step of a workflow, after the agent has gathered context. Every call changes real data in your Nostr Bray environment.

RISK

Why list-pin is rated Medium

This tool manages (creates/modifies) a pinned events list on Nostr. Adding or removing pins is a reversible write operation — pins can be re-added or removed again. No code execution, deletion of underlying data, or financial action is involved. Severity is medium because misuse could alter a user's curated pin list in ways they didn't intend, but it's not irreversible.

From the tool's definition 'Add or remove event IDs from your pin list' — modifies a user's pin list by adding or removing entries

Attacks that exploit this kind of access

RECOMMENDED RULE

The rule that runs list-pin safely

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

list-pin Rate-limited

list-pin 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.

View as policy code

policy.json

{
  "version": "1",
  "default": "deny",
  "tools": {
    "list-pin": {
      "limits": [
        {
          "counter": "list-pin_rate",
          "window": "minute",
          "max": 30,
          "scope": "grant"
        }
      ]
    }
  }
}

LIMIT THIS TOOL → Instant setup, no code required.

The button opens the PolicyLayer dashboard: create your workspace, connect Nostr Bray, apply this rule, and every list-pin call is checked against it from then on.

FAQ

Questions about list-pin

What does the list-pin tool do? +

Manage pinned events (NIP-51, kind 10001). Add or remove event IDs from your pin list. It is categorised as a Write tool in the Nostr Bray MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.

How do I enforce a policy on list-pin? +

Register the Nostr Bray MCP server in PolicyLayer and add a rule for list-pin: 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 Nostr Bray. Nothing to install.

What risk level is list-pin? +

list-pin is a Write tool with medium risk. Write tools should be rate-limited to prevent accidental bulk modifications.

Can I rate-limit list-pin? +

Yes. Add a rate_limit block to the list-pin 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 list-pin completely? +

Set action: deny in the PolicyLayer policy for list-pin. 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 list-pin? +

list-pin is provided by the Nostr Bray MCP server (nostr-bray). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.

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