relay-list

List the relay set (read/write) for the active identity. Optionally check for shared relays with another identity.

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-list.md

WHAT IT DOES

What relay-list does on Nostr Bray

AI agents call relay-list 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-list is rated Low

This tool retrieves configuration data (relay endpoints associated with an identity) without creating, modifying, deleting, or executing any operations. It is a pure information-retrieval function with no blast radius if misused by an AI agent. Low severity because relay configuration is typically non-sensitive metadata in Nostr systems.

From the tool's definition Tool name 'relay-list' and description 'List the relay set' explicitly indicate a read/query operation with no side effects. The optional comparison with another identity is still a lookup/read operation.

Attacks that exploit this kind of access

RECOMMENDED RULE

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

relay-list Allowed

relay-list 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-list": {}
  }
}

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-list call is checked against it from then on.

FAQ

Questions about relay-list

What does the relay-list tool do? +

List the relay set (read/write) for the active identity. Optionally check for shared relays with another identity. 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-list? +

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

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

Can I rate-limit relay-list? +

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

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

relay-list 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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