Bray MCP

nostr-bray

Trust-aware Nostr MCP for AI and humans. 238 tools across 27 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

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)

Tier	Method	Key exposure
Heartwood	Dedicated signing appliance (BUNKER_URI)	Key never leaves the signing device. Supports nsec-tree derivation, per-client permissions, and device-backed attestations.
Software bunker	Any NIP-46 bunker (BUNKER_URI)	Key held by a separate process. Never seen by bray.
ncryptsec	NIP-49 encrypted key (NOSTR_NCRYPTSEC)	Key encrypted at rest, decrypted in memory at startup.
Key file	File path (NOSTR_SECRET_KEY_FILE)	Key on disk, read once, env var deleted.
Env var	Inline secret (NOSTR_SECRET_KEY)	Key visible in process environment. Use only for development.

Tool Groups

Group	Tools	Key examples
Identity	16	whoami, identity-derive-persona, identity-switch, identity-prove, nip05-lookup
Social	15	social-post, social-reply, social-feed, contacts-follow, social-notifications
Direct Messages	4	dm-send, dm-read, dm-conversation
Trust	22	trust-attest, trust-ring-prove, trust-spoken-challenge, trust-attest-chain
Dispatch	13	dispatch-send, dispatch-check, dispatch-reply, dispatch-capability-discover
Relay	13	relay-query, relay-set, relay-discover, cast-spell, relay-health
Moderation	16	label-create, list-mute, list-bookmark, list-followset-create, moderation-filter
Marketplace	16	marketplace-discover, marketplace-call, listing-create, listing-search
Safety	14	canary-session-create, canary-group-create, canary-duress-signal, safety-activate
Blossom	10	blossom-upload, blossom-mirror, blossom-verify, blossom-repair
Privacy	10	privacy-commit, privacy-prove-range, privacy-prove-age, privacy-publish-proof
Zap	9	zap-send, zap-balance, zap-make-invoice, zap-decode
Vault	9	vault-create, vault-encrypt, vault-share, vault-rotate
Workflow	7	trust-score, verify-person, identity-setup, relay-health, feed-discover
Signet	7	signet-badge, signet-vouch, signet-credentials, signet-challenge
Communities	5	community-create, community-feed, community-post, community-approve
Badges	4	badge-create, badge-award, badge-accept, badge-list
Groups (NIP-29)	4	group-info, group-chat, group-send, group-members
Articles	3	article-publish, article-read, article-list
Calendar	3	calendar-create, calendar-read, calendar-rsvp
Wiki	3	wiki-publish, wiki-read, wiki-list
Search	3	search-notes, search-profiles, hashtag-feed
Scheduling	4	post-schedule, post-queue-list, post-queue-cancel, publish-event
Community NIPs	2	nip-publish, nip-read
Utility	19	decode, encode-npub, nip44-encrypt, verify-event, tombstone
Handler	2	handler-publish, handler-discover
Catalog	2	search-actions, execute-action

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

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:

NIP	What
NIP-01	Events, signing, relay protocol
NIP-02	Follow lists
NIP-05	DNS identity (lookup, verify, relay hints)
NIP-09	Event deletion
NIP-11	Relay information
NIP-17	Private DMs (gift wrap, default)
NIP-19	bech32 encoding (npub, nsec, nprofile, nevent, naddr)
NIP-23	Long-form articles (kind 30023)
NIP-29	Group chat
NIP-32	Labels
NIP-40	Expiration tags
NIP-42	Relay auth
NIP-44	Encrypted payloads v2
NIP-45	Event counts
NIP-46	Nostr Connect (bunker)
NIP-49	Private key encryption (ncryptsec)
NIP-50	Search
NIP-51	Lists (mute, pin, follow sets, bookmarks)
NIP-52	Calendar events
NIP-54	Wiki pages
NIP-57	Lightning zaps
NIP-58	Badges
NIP-65	Relay list metadata
NIP-72	Communities
NIP-78	Application-specific data
NIP-85	Trust rankings
NIP-89	Recommended applications (dispatch capability discovery)
NIP-96	HTTP file storage (Blossom)
NIP-99	Classified listings
NIP-A7	Spells (kind 777 — cast saved queries)
NIP-VA	Verifiable attestations (kind 31000)

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

Variable	Description
BRAY_CONFIG	Path to config file
BUNKER_URI	NIP-46 bunker URL (safest)
BUNKER_URI_FILE	Path to bunker URI file
NOSTR_SECRET_KEY	nsec, hex, or BIP-39 mnemonic
NOSTR_SECRET_KEY_FILE	Path to secret key file
NOSTR_NCRYPTSEC	NIP-49 encrypted key
NOSTR_NCRYPTSEC_PASSWORD	Password for ncryptsec
NOSTR_RELAYS	Comma-separated relay URLs
TOR_PROXY	SOCKS5h proxy for Tor
NIP04_ENABLED	Set 1 to enable legacy NIP-04 DMs
TRANSPORT	stdio (default) or http
PORT	HTTP port (default 3000)

All secret env vars are deleted from process.env immediately after parsing.

CLI

npx nostr-bray whoami                    # show your npub
npx nostr-bray post "hello from bray!"   # publish a note
npx nostr-bray persona work              # derive a work persona
npx nostr-bray prove blind               # create a linkage proof
npx nostr-bray --help                    # see all commands

Documentation

• Usage Guide -- walkthroughs for identity, DMs, attestations, payments, and duress
• Examples -- MCP config files and CLI workflow scripts
• Contributing -- setup, architecture, testing, and conventions

For AI Assistants

See llms.txt for a concise summary optimised for AI context windows, or llms-full.txt for complete tool documentation with parameter details.

Part of the ForgeSworn Toolkit

ForgeSworn builds open-source cryptographic identity, payments, and coordination tools for Nostr.

Library	What it does
nsec-tree	Deterministic sub-identity derivation
ring-sig	SAG/LSAG ring signatures on secp256k1
range-proof	Pedersen commitment range proofs
canary-kit	Coercion-resistant spoken verification
spoken-token	Human-speakable verification tokens
toll-booth	L402 payment middleware
geohash-kit	Geohash toolkit with polygon coverage
nostr-attestations	NIP-VA verifiable attestations
dominion	Epoch-based encrypted access control
nostr-veil	Privacy-preserving Web of Trust

Licence

MIT