nostr_post

Publish a short-text note (kind:1) to Nostr relays.

SERVERAibtc SOURCEaibtcdev/aibtc-mcp-server

Medium RISK CLASS

Category Write

Parameters 00 required

Recommended Rate-limitedsee the rule below

Registry record Grade F, identity verified Pull the record →

This record as markdown: /tools/io-github-aibtcdev-mcp-server/nostr-post.md

WHAT IT DOES

What nostr_post does on Aibtc

AI agents use nostr_post to create or update resources in Aibtc, usually the action step of a workflow, after the agent has gathered context. Every call changes real data in your Aibtc environment.

RISK

Why nostr_post is rated Medium

This tool creates new content (a Nostr note) on a distributed network. It is reversible in the sense that notes can be deleted or users can ignore them, but the act of publishing cannot be undone from the relay perspective. The primary risk is unauthorized posting of content attributed to the user/AI agent, potential spam, or reputational harm.

From the tool's definition Tool description states 'Publish a short-text note (kind:1) to Nostr relays' – the verb 'publish' indicates creating and posting new data to a network.

Attacks that exploit this kind of access

RECOMMENDED RULE

The rule that runs nostr_post safely

PolicyLayer is an MCP gateway: it sits between your AI agents and Aibtc, and checks every tool call against a rule you set before the call runs. Nothing changes on the server itself. For nostr_post, this is the rule to start with:

nostr_post Rate-limited

nostr_post stays usable, but capped: an agent stuck in a loop can't make hundreds of changes a minute. Everything else on the server is denied unless you say otherwise.

View as policy code

policy.json

{
  "version": "1",
  "default": "deny",
  "tools": {
    "nostr_post": {
      "limits": [
        {
          "counter": "nostr_post_rate",
          "window": "minute",
          "max": 30,
          "scope": "grant"
        }
      ]
    }
  }
}

LIMIT THIS TOOL → Instant setup, no code required.

The button opens the PolicyLayer dashboard: create your workspace, connect Aibtc, apply this rule, and every nostr_post call is checked against it from then on.

FAQ

Questions about nostr_post

What does the nostr_post tool do? +

Publish a short-text note (kind:1) to Nostr relays. It is categorised as a Write tool in the Aibtc MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.

How do I enforce a policy on nostr_post? +

Register the Aibtc MCP server in PolicyLayer and add a rule for nostr_post: 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 Aibtc. Nothing to install.

What risk level is nostr_post? +

nostr_post is a Write tool with medium risk. Write tools should be rate-limited to prevent accidental bulk modifications.

Can I rate-limit nostr_post? +

Yes. Add a rate_limit block to the nostr_post 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 nostr_post completely? +

Set action: deny in the PolicyLayer policy for nostr_post. 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 nostr_post? +

nostr_post is provided by the Aibtc MCP server (aibtcdev/aibtc-mcp-server). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.

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