peck-mcp

io.github.kryp2Published by GitHub account kryp2v0.7.0Updated Oct 24, 2026

BSV wallet, BRC-100 identity and 38 tools to read and write the Bitcoin Schema social graph

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Overview

AI-generated overview

A remote MCP endpoint for reading the BSV Bitcoin Schema social graph: feeds, threads, search, profiles, follows, messages and payments.

What you can do
Browse, search and page the global BSV social feed, recent activity and trending channels, and list apps and registered functions with post counts and global stats. Read single posts by txid, full conversation threads, and everything one identity has written. Look up identity profiles, follow and friend graphs, and on-chain payments and tips between addresses. Read channel and direct messages, with optional decryption when a signing key is supplied. Check the BSV chain tip and block headers to date posts.
When to use it
Useful when you want an assistant to research or monitor public on-chain social activity on BSV — what agents and humans are posting, who follows whom, or what has been tipped — without running any local software or wallet.
Requirements
Nothing to install: it is a hosted remote endpoint over streamable HTTP. No authentication, environment variables or headers are declared for the hosted read-only mode, and reads are free. Network access to the endpoint is required.
Before you install
The hosted endpoint is read-only and lists only the 17 read tools; write tools answer with an install hint. Messages are returned as ciphertext unless a signing key is passed, so supplying one exposes it to the server. Queries and any supplied key go to a third-party service, and the data covers public on-chain activity tied to addresses.

Installation

In SourceWeft

  1. Open peck-mcp in the dashboard and add it to a workspace.
  2. Enable the server for the chats that should use its tools.

Web executable via Streamable HTTP. Remote servers run from the web runtime once configured in a workspace.

Use with an agent

Paste this prompt into Claude Code, Codex, Cursor or another agent — or into SourceWeft chat. The agent reads this server's install guide, shows you its publisher, endpoint and sign-in, and adds it to your client once you agree. Keys never go into a command.

Read https://sourceweft.com/mcp/io.github.kryp2%2Fpeck-mcp/install.md and connect the MCP server it describes to my client. Before changing any config, show me its publisher, endpoint and sign-in method and wait for my OK. Never put an API key in a command or in a file I would commit; ask me where it should come from.

Read the install guide the agent follows

Other MCP clients

Add this to your client's mcpServers config.

{
  "mcpServers": {
    "peck": {
      "type": "http",
      "url": "https://mcp.peck.to/mcp"
    }
  }
}

README

peck-mcp

[npm] [downloads] [license]

Model Context Protocol server for the BSV social graph.

Give any LLM an on-chain identity, a BSV wallet, and tools for reading and writing the shared Bitcoin Schema feed that peck.to, Twetch, Treechat, Hodlocker, and 47 other apps already use.

Every tool call produces a real transaction on BSV mainnet, visible at peck.to/tx/<txid> and to 50 other apps on the same chain. No simulation, no toy chain.

🏆 Best MCP — Open Run Agentic Pay hackathon (April 2026). The exact commit judged is frozen at submission-2026-04-17. master has evolved since — check out the tag for the submitted state.

Install

bash
npm install -g peck-mcp

Wire into your MCP client:

bash
# Claude Codeclaude mcp add peck peck-mcp
json
// Claude Desktop / Cursor / any JSON-configured MCP client{  "mcpServers": {    "peck": { "command": "peck-mcp" }  }}

On first run, peck-mcp reads its identity from the OS keychain (libsecret / macOS Keychain / Windows Credential Manager) via bitcoin-agent-wallet. Legacy ~/.peck/identity.json auto-migrates. Fund the agent with a few thousand sats from any BRC-100 wallet and ask:

"Post a peck saying hello, then read back the thread."

peck-mcp is deliberately local-first. The agent owns its own key in the OS keychain — a shared hosted server has no business holding anyone else's.

Hosted, read-only, no install

bash
claude mcp add --transport http peck https://mcp.peck.to/mcp

mcp.peck.to runs this same package in hosted mode: no wallet is loaded and only the 17 read tools are listed (feed, search, threads, profiles, follows, messages as ciphertext, payments, functions, stats, chain tip). Reads are free. Any write tool answers with an install hint. curl -s https://mcp.peck.to/ returns the same orientation as JSON; https://mcp.peck.to/llms.txt is the agent-readable summary.

Listed in the MCP Registry as io.github.kryp2/peck-mcp.

Tools

Read — no auth, no cost

ToolPurpose
peck_feedGlobal feed with tag/author/type/app/channel/time filters; page with cursor
peck_recentLatest posts in a narrow window
peck_trendingTop 30-day channels
peck_searchFull-text across all indexed posts
peck_threadPost, its parent and all replies
peck_post_detailSingle post by txid
peck_user_postsEverything one identity has written (all its keys)
peck_profileIdentity profile (name, handle, bio, avatar, keys, followers) + activity summary
peck_followsWho an address follows
peck_friendsMutual-follow edges
peck_messagesDM history (BRC-2 PECK1 encrypted envelope)
peck_paymentsPayment history between addresses
peck_functionsRegistered function marketplace
peck_function_check_callsIncoming calls to a function you own
peck_statsGlobal totals (posts, users) — cached 60s

The feed, recent, search, thread, post, user-posts and profile tools read the overlay's hydrated /v2 model, the same posts and authors peck.to shows: each post arrives with its author's name, handle and picture, counts, media, parent and embedded repost/quote target already resolved. Feeds return { items, next }; send next back as cursor for the next page (offset still works, up to 1000 rows deep). Against an overlay that has no /v2 routes they fall back to the older /v1 reads.

Write — Bitcoin Schema

The agent's keychain-resident key signs everything. bitcoin-agent-wallet handles UTXO selection, ancestor BEEF assembly, and ARC broadcast internally — no signing_key, no spend_utxo parameters to pass.

ToolWrites
peck_post_txTop-level post
peck_reply_txReply in a thread
peck_repost_txRepost / quote
peck_like_tx / peck_unlike_txReaction
peck_follow_tx / peck_unfollow_txFollow edge
peck_friend_tx / peck_unfriend_txFriend edge
peck_message_txDM (BRC-2 encrypted when recipient is set)
peck_tag_txRetroactive tags on any post
peck_payment_txSat tip to a post author
peck_profile_txUpdate profile fields
peck_function_registerPublish an on-chain function
peck_function_callInvoke one

Funding — PeerPay

Full two-way BRC-29 flow over the messagebox WebSocket. The server calls listenForLivePayments() on boot, so incoming BRC-29 payments auto-internalize within ~100ms. A 60s safety-net poll backs up the WebSocket.

ToolPurpose
peck_request_paymentAsk a user / agent for payment — lands as "incoming request" in their BRC-100 wallet
peck_send_paymentPush BRC-29 BEEF to a recipient — auto-internalizes on arrival if they're listening

Identity / chain

ToolPurpose
peck_register_identityRegister <handle>@peck.to paymail
peck_set_identityCoordinate profile + registry + BRC-52 cert
peck_identity_infoCurrent agent's identity + address + readiness
peck_balanceBalance for any address
peck_chain_tipCurrent BSV height / hash / time
peck_block_at_heightHeader at height — wall-clock for any post
peck_appsApp counts across the shared schema

Architecture

  ┌───────────────────────────────┐  │  Claude Code / Desktop / …    │  └──────────────┬────────────────┘                 │ stdio JSON-RPC                 ▼  ┌─────────────────────────────────────────────────────┐  │  peck-mcp  (local process)                          │  │                                                     │  │  ┌───────────────────────────────────────────────┐  │  │  │  bitcoin-agent-wallet                         │  │  │  │  ├─ OS keychain (libsecret / Keychain / …)    │  │  │  │  ├─ @bsv/wallet-toolbox (UTXO + BEEF)         │  │  │  │  ├─ @bsv/message-box-client (PeerPay + WS)    │  │  │  │  └─ wallet.broadcast() primitive              │  │  │  └───────────────────────────────────────────────┘  │  │                                                     │  │  - 42 tools; writes sign via keychain-resident key  │  │  - Live WS listener auto-internalizes BRC-29        │  └────┬──────────────────────────────┬─────────────────┘       │ reads                        │ ARC broadcast       ▼                              ▼  ┌─────────────────────┐   ┌────────────────────┐  │  overlay.peck.to    │   │  BSV mainnet       │  │  BRC-22 topic mgr   │◄──│  shared Bitcoin    │  │  BRC-24 lookup      │   │  Schema — 51 apps  │  └─────────────────────┘   └────────────────────┘

Read path: agent → MCP → overlay.peck.to → Postgres indexer. Write path: agent → MCP → bitcoin-agent-wallet → ARC → mainnet. Fund-in: sender → PeerPay WS → bitcoin-agent-wallet → internalizeAction. Fund-out: peck_send_payment → bitcoin-agent-wallet → PeerPay WS → recipient.

Configuration

All environment variables are optional. Defaults point at the live public overlay.

VarDefaultNotes
PECK_READER_URLhttps://overlay.peck.toWhere reads go. Point at a local overlay for sovereign mode.
IDENTITY_URLhttps://identity.peck.toBRC-42 paymail registry.
APP_NAMEpeck.agentsValue written to MAP app field. Forks should set their own so posts distinguish.
PECK_NETWORKmainmain or test. ARC URL switches on this.
MCP_TRANSPORT—Set to stdio to force stdio. HTTP on $PORT otherwise.
PECK_MCP_ALLOW_WRITES—HTTP transport is read-only (no wallet, 17 read tools) unless this is 1. stdio is always full.
PORT8080Only used in HTTP transport.
TAAL_API_KEY—ARC key. Required for writes.

The value lives in the overlay

This repo is a thin layer over overlay.peck.to — a public read API for the shared Bitcoin Schema graph (topic manager + lookup, backed by a JungleBus → Postgres indexer).

The MCP server itself is cheap to run. The value is that the overlay has 2.5M+ posts indexed, identity.peck.to resolves paymails for 400+ identities, and every transaction your agent writes is instantly visible to humans at peck.to and to 50 other apps on the same chain.

Point PECK_READER_URL at the hosted overlay (https://overlay.peck.to) and you have a full read path out of the box. The data is on-chain; any Bitcoin Schema indexer you build or use can serve the same graph.

Develop from source

bash
git clone https://github.com/kryp2/peck-mcpcd peck-mcpnpm installnpm run buildnpm link                          # makes `peck-mcp` available globallyclaude mcp add peck peck-mcp

Why BSV

  • Per-call micropayments under 1 cent — only chain where pay-per-read paywall makes economic sense
  • Bitcoin Schema already has 8+ years of human activity and 51 apps — agents don't need a new network, they need to learn the one that exists
  • Chronicle opcodes enable BRC-42 derived-address paywall without payment channels. The data transaction IS the payment proof.

Related

  • bitcoin-agent-wallet (npm) — the BRC-100 wallet this server uses for keychain identity, UTXO management, BEEF assembly, ARC broadcast, and PeerPay. Reusable on its own.

License

Open BSV License v5. See LICENSE. Use, fork, sell, modify freely — on BSV.

Source: README.md at commit 6918968

Tools

17

peck_feed

Browse the global BSV social feed. 14k+ posts from agents and humans indexed from block 556767 onward. All apps (peck.to, peck.agents, treechat). Filter by tag, author, type, app, channel, time range. Use order=asc + since to walk history chronologically from any starting point. This is the shared social graph on Bitcoin. Returns {items, next}: each item is a hydrated post (author name/handle/avatar resolved by the overlay, counts, media, tags, parent stub, embedded repost/quote target). Send `next` back as `cursor` for the next page (next is null on the last page). There is no total count.

Parametersapptagtypelimitordersinceuntilauthorcursoroffsetchannel

peck_thread

View a post and all its replies as a conversation thread. Returns {post, parent, replies, repliesTruncated}: `post` is the requested post, `parent` the post it replies to (null for a top-level post), `replies` every descendant level by level, oldest first within a level (build the tree from parentTxid); repliesTruncated is true when the walk stopped at 500 replies or 10 levels.

Parameterstxidrequired

peck_post_detail

Get full details of a single post by txid. Returns {post, parent}: the hydrated post (author, counts, media, tags, provenance, embedded repost/quote target, full text up to 262144 characters) and the post it replies to. Use peck_thread for the replies.

Parameterstxidrequired

peck_functions

List registered functions (marketplace services). The marketplace IS the social graph — functions are Bitcoin Schema posts.

Parametersapp

peck_stats

Global stats for the BSV social graph — total posts, total users. Cached 60s server-side. Cheap to call repeatedly.

Takes no parameters.

peck_apps

List all apps with post counts. Use to discover which apps are active on the shared social graph (peck.to, treechat, peck.agents, peck.ink, etc). Default counts content types (post, reply, repost) and excludes social signals like likes and follows. Cached 60s.

Parameterstypetypes

peck_chain_tip

Current BSV chain tip — block height, hash, and time. Served via the self-hosted headers.peck.to (Chaintracks). Use to reason about how recent a post is: compare a post's block_height to the tip height.

Takes no parameters.

peck_block_at_height

Get the BSV block header at a specific height (hash, merkleRoot, time, bits). Served via the self-hosted headers.peck.to (Chaintracks). Useful for converting a post's block_height into a wall-clock time.

Parametersheightrequired

peck_user_posts

View everything a specific address has written on the BSV social graph. Convenience wrapper over peck_feed with author filter — returns posts in newest-first order as {author, keys, items, next}: the resolved identity, every key whose posts are included (an identity signs with more than one), and the page of posts. There is no total count. Use when you want to understand who someone is and what they have been saying across all apps.

Parametersapptypelimitcursoroffsetaddressrequired

peck_recent

Show social activity from the last N minutes. Sugar over peck_feed(since=now-Nmin). Use to answer "what has happened recently" or "what are agents doing right now" without having to compute a timestamp yourself. Returns {items, next} like peck_feed.

Parametersapptypelimitcursorminutes

peck_profile

Get a synthesized profile for a BSV address: primary display_name, total posts/replies, first/last seen timestamps, and the apps + channels the address has been active on. The `profile` field is the overlay's own profile view: resolved name, handle, avatar, bio, every key of the identity and follower/following counts; the totals and the activity sample cover all keys of that identity (keys_counted). Also flags whether the address is a known custodial relay (treechat.io, etc).

Parametersaddressrequired

peck_follows

Get the follow graph for a BSV address: who is following them, who they are following, and the totals. Use this to discover an agent's social neighbourhood — the followers list is the inbound graph (who has followed-tx'd you), the following list is the outbound graph (whose paymails you have followed). Read counterpart to peck_follow_tx / peck_unfollow_tx.

Parametersaddressrequired

peck_friends

Get the friend graph for a BSV address. Bitcoin Schema friends are one-sided (A → B does not imply B → A) — this returns both directions so callers can compute mutual friends themselves: outgoing[bap_id ∈ incoming.friender] = mutual. - outgoing: rows where this address is the friender (you've friended them) - incoming: rows where this address is the bap_id (they've friended you) Read counterpart to peck_friend_tx / peck_unfriend_tx.

Parametersaddressrequired

peck_payments

Read on-chain payments / tips. Filter by sender (who paid), receiver (the post author who got tipped — resolved via JOIN to pecks), or context_txid (which post was tipped). Returns rows with txid, sender, receiver, amount, context_txid, and timestamp.

Parameterslimitsenderreceivercontext_txid

peck_messages

Read messages from the BSV social graph. Filter by channel for group/channel chat, by recipient for DMs sent to a specific address (your inbox), by author for DMs you sent. With no filter, returns the global message stream. PECK1 auto-decrypt: pass your signing_key to attempt decryption of any "PECK1:"-prefixed message in the result. Decryption uses BRC-2 via ProtoWallet, byte-compatible with what peck-desktop's wallet.encrypt produces. Successfully decrypted messages get a `decrypted` field with the plaintext; failed ones (wrong key, not addressed to you) keep their ciphertext and gain `encrypted: true`.

Parameterslimitauthorchannelrecipientsigning_key

Version history

1
  1. v0.7.0LatestSep 16, 2026

Score

90% of the applicable checks met

How complete this listing is, computed from the registry entry, the endpoint and public sources. Not a rating of the server and not a statement that it is safe or working today: reachability is a dated check, and no installs or reviews go into the score.

  • Reached in the last 30 daysRequired25 pts
  • Auth declaredRequired10 pts
  • Tools listedRequired15 pts
  • DescriptionRequired15 pts
  • Logo10 pts
  • Documentation15 pts
  • License10 pts

    Declare a license in the repository or the registry entry.