relay-query
Query events from Nostr relays by kind, author, ids, tags, or time range. Useful for discovering events, scanning for specific kinds, or investigating unknown event schemas. Uses explicit relays if provided, otherwise the active identity\
This record as markdown: /tools/dev-forgesworn-bray/relay-query.md
What relay-query does on Nostr Bray
AI agents call relay-query 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.
Why relay-query is rated Low
This tool retrieves data from Nostr relays without creating, modifying, or deleting information. However, severity is medium rather than low because: (1) querying Nostr events could expose private or sensitive information depending on event kinds and filters; (2) an AI agent could use relay-query to enumerate users, discover DMs, or scan for specific content patterns; (3) the 'active identity' context suggests the…
From the tool's definition Tool description states it 'Query events from Nostr relays' and is 'Useful for discovering events, scanning for specific kinds, or investigating unknown event schemas.' The verb 'query' and the purpose of retrieving/discovering data without modification…
Attacks that exploit this kind of access
The rule that runs relay-query 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-query, this is the rule to start with:
relay-query is read-only, so it stays allowed. Everything else on the server is denied unless you say otherwise.
The button opens the PolicyLayer dashboard: create your workspace, connect Nostr Bray, apply this rule, and every relay-query call is checked against it from then on.
Questions about relay-query
Query events from Nostr relays by kind, author, ids, tags, or time range. Useful for discovering events, scanning for specific kinds, or investigating unknown event schemas. Uses explicit relays if provided, otherwise the active identity\. It is categorised as a Read tool in the Nostr Bray MCP Server, which means it retrieves data without modifying state.
Register the Nostr Bray MCP server in PolicyLayer and add a rule for relay-query: 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.
relay-query is a Read tool with low risk. Read-only tools are generally safe to allow by default.
Yes. Add a rate_limit block to the relay-query 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.
Set action: deny in the PolicyLayer policy for relay-query. 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.
relay-query 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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