nostr-bray

Trust-aware Nostr MCP for AI and humans. 261 tools across 29 groups. Model-agnostic. Works with Claude, ChatGPT, Gemini, Cursor, Windsurf, or any MCP client.

Quick Start

Install globally or run via npx:

npm install -g nostr-bray

New to Nostr? Mint a key first -- this works before anything is configured and prints your npub plus a 24-word mnemonic (write it down; it is the key):

npx nostr-bray create

Add to your MCP client config:

{
  "mcpServers": {
    "nostr": {
      "command": "npx",
      "args": ["nostr-bray"],
      "env": {
        "NOSTR_SECRET_KEY": "nsec1...",
        "NOSTR_RELAYS": "wss://relay.damus.io,wss://nos.lol"
      }
    }
  }
}

Then ask your AI to call whoami to verify it works.

For production use, prefer Heartwood or any NIP-46 bunker (your key never leaves your signing device):

{
  "mcpServers": {
    "nostr": {
      "command": "npx",
      "args": ["nostr-bray"],
      "env": {
        "BUNKER_URI": "bunker://...",
        "NOSTR_RELAYS": "wss://relay.damus.io,wss://nos.lol"
      }
    }
  }
}

Auth tiers (best to worst)

Tool Groups

Use search-actions to find tools by keyword, then execute-action to run them.

Protocol foundations: semantic event validation, NIP-77 reconciliation, and relay-scoped NIP-29 groups.

Dispatch: AI-to-AI Collaboration

Dispatch lets AI agents collaborate over encrypted Nostr DMs. Any MCP-capable client can send structured tasks to other agents and receive results back.

13 message types: send, check, reply, ack, status, cancel, refuse, failure, query, propose, capability-publish, capability-discover, capability-read.

NIP-89 capability discovery: Agents publish what they can do. Other agents discover capabilities by topic, then route tasks to the right collaborator automatically.

dispatch-send("alice", "think", "Analyse the trade-offs of NIP-44 vs NIP-04")
dispatch-check()                    → inbox with pending tasks
dispatch-reply(taskId, result)      → send results back encrypted

All messages are NIP-44 encrypted. Recipients are resolved by name, NIP-05, npub, or hex.

Identity Resolver

Every tool that accepts a recipient uses universal identity resolution. You never need to look up hex pubkeys manually.

Accepted formats:

• Name -- "alice" (resolved from your dispatch contacts)
• NIP-05 -- "alice@example.com" (HTTP lookup)
• npub -- "npub1abc..." (NIP-19 decode)
• Hex -- "a1b2c3..." (64-character passthrough)

Scheduled Posting

Sign events now, publish later. Events are signed immediately with your current key, then held in a queue until the scheduled time.

post-schedule("Good morning!", "2026-04-01T08:00:00Z")
post-queue-list()          → view pending scheduled posts
post-queue-cancel(id)      → cancel before it publishes

NIP Coverage

nostr-bray implements or integrates the following NIPs:

Configuration

Config file (recommended)

Create ~/.config/bray/config.json (or ~/.nostr/bray.json):

{
  "bunkerUriFile": "/Users/you/.nostr/bunker-uri",
  "relays": ["wss://relay.damus.io", "wss://nos.lol"],
  "trustMode": "annotate"
}

Secrets are referenced by file path (bunkerUriFile, secretKeyFile, nwcUriFile) so they never appear in the config itself.

Search order: BRAY_CONFIG env var > $XDG_CONFIG_HOME/bray/config.json > ~/.nostr/bray.json.

Environment variables