label-search

Find all events/pubkeys that have been given a specific label in a namespace.

SERVERNostr Bray SOURCEnostr-bray

Low RISK CLASS

Category Read

Parameters 00 required

Recommended Allowedsee the rule below

Registry record Grade F, identity unverified Pull the record →

This record as markdown: /tools/dev-forgesworn-bray/label-search.md

WHAT IT DOES

What label-search does on Nostr Bray

AI agents call label-search to retrieve information from Nostr Bray without modifying anything. It is typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.

RISK

Why label-search is rated Low

This tool searches and retrieves labeled data from a Nostr-based system. The verb 'find' and the read-only nature of the operation (no data creation, modification, or deletion) classify it as a Read operation. The low severity reflects minimal blast radius—an AI agent misusing this tool could only discover information about labeled events and public keys, not alter or destroy anything.

From the tool's definition Tool name 'label-search' and description 'Find all events/pubkeys that have been given a specific label in a namespace' indicate a query operation that retrieves existing data without modification or deletion.

Attacks that exploit this kind of access

RECOMMENDED RULE

The rule that runs label-search 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 label-search, this is the rule to start with:

label-search Allowed

label-search is read-only, so it stays allowed. Everything else on the server is denied unless you say otherwise.

View as policy code

policy.json

{
  "version": "1",
  "default": "deny",
  "tools": {
    "label-search": {}
  }
}

ALLOW ONLY THIS TOOL → Instant setup, no code required.

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

FAQ

Questions about label-search

What does the label-search tool do? +

Find all events/pubkeys that have been given a specific label in a namespace. It is categorised as a Read tool in the Nostr Bray MCP Server, which means it retrieves data without modifying state.

How do I enforce a policy on label-search? +

Register the Nostr Bray MCP server in PolicyLayer and add a rule for label-search: 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 label-search? +

label-search is a Read tool with low risk. Read-only tools are generally safe to allow by default.

Can I rate-limit label-search? +

Yes. Add a rate_limit block to the label-search 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 label-search completely? +

Set action: deny in the PolicyLayer policy for label-search. 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 label-search? +

label-search 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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