relay-compare

Compare 2 or more relays side-by-side. For each relay: NIP-11 metadata, response time,

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/relay-compare.md

WHAT IT DOES

What relay-compare does on Nostr Bray

AI agents call relay-compare 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 relay-compare is rated Low

This tool performs a read-only comparison of relay metadata and performance metrics. It retrieves and displays existing data (NIP-11 metadata, response time) without modifying, executing code against relays, or triggering destructive operations.

From the tool's definition Tool name 'relay-compare' and description 'Compare 2 or more relays side-by-side. For each relay: NIP-11 metadata, response time' indicate querying and retrieving information about Nostr relays.

Attacks that exploit this kind of access

RECOMMENDED RULE

The rule that runs relay-compare 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 relay-compare, this is the rule to start with:

relay-compare Allowed

relay-compare 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": {
    "relay-compare": {}
  }
}

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 relay-compare call is checked against it from then on.

FAQ

Questions about relay-compare

What does the relay-compare tool do? +

Compare 2 or more relays side-by-side. For each relay: NIP-11 metadata, response time,. 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 relay-compare? +

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

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

Can I rate-limit relay-compare? +

Yes. Add a rate_limit block to the relay-compare 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 relay-compare completely? +

Set action: deny in the PolicyLayer policy for relay-compare. 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 relay-compare? +

relay-compare 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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