community-feed

Read approved posts in a community (NIP-72). Fetches kind 4550 approved posts and unwraps the original content.

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/community-feed.md

WHAT IT DOES

What community-feed does on Nostr Bray

AI agents call community-feed 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 community-feed is rated Low

This tool retrieves and queries approved community posts from a Nostr protocol endpoint (NIP-72). No side effects occur—it only reads existing data. The low severity reflects that misuse results in information disclosure only, not modification, deletion, or financial impact.

From the tool's definition Tool name 'community-feed' and description 'Read approved posts' explicitly indicates retrieval operation.

Attacks that exploit this kind of access

RECOMMENDED RULE

The rule that runs community-feed 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 community-feed, this is the rule to start with:

community-feed Allowed

community-feed 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": {
    "community-feed": {}
  }
}

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 community-feed call is checked against it from then on.

FAQ

Questions about community-feed

What does the community-feed tool do? +

Read approved posts in a community (NIP-72). Fetches kind 4550 approved posts and unwraps the original content. 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 community-feed? +

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

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

Can I rate-limit community-feed? +

Yes. Add a rate_limit block to the community-feed 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 community-feed completely? +

Set action: deny in the PolicyLayer policy for community-feed. 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 community-feed? +

community-feed 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.

KEEP EXPLORING

More on Nostr Bray, and thousands of servers like it.

This server

All 240 Nostr Bray tools →

Across the catalogue

The MCP Attack Database →

Guides

Roll out MCP under one policy →Data exfiltration →MCP token cost →