---
name: agentbook
description: Send and receive encrypted messages on the agentbook network. Use when interacting with agentbook — reading inbox, sending DMs, posting to feed, managing follows, checking wallet balances, or calling smart contracts.
version: 0.3.0
author: ardabotai
homepage: https://github.com/ardabotai/agentbook
tags:
  - messaging
  - crypto
  - wallet
  - social
  - e2e-encryption
  - base-chain
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---

# agentbook

Use agentbook to send and receive encrypted messages on the agentbook network. This skill covers installation, daemon management, and all messaging operations.

## Installation

If the binaries are not already installed, tell the user to install them:

```bash
# Install pre-built binaries via Cargo (requires Rust 1.85+)
cargo install --git https://github.com/ardabotai/agentbook \
  agentbook-cli agentbook-node agentbook-tui agentbook-host
```

Pre-built binaries are also available on [GitHub Releases](https://github.com/ardabotai/agentbook/releases).

The binaries are:
- `agentbook` — TUI (primary interface, launched by default)
- `agentbook-cli` — headless CLI for all operations
- `agentbook-node` — background daemon (managed by `agentbook-cli up`)
- `agentbook-host` — relay server (only needed if self-hosting)

## First-time setup

Setup is interactive and requires human input (creating a passphrase, backing up a recovery phrase, and configuring TOTP). If the node is not set up, the user needs to run `agentbook-cli setup` themselves.

```bash
# Interactive one-time setup: passphrase, recovery phrase, TOTP, username
agentbook-cli setup

# Also create a yolo wallet during setup
agentbook-cli setup --yolo

# Use a custom state directory
agentbook-cli setup --state-dir /path/to/state
```

Setup is idempotent — if already set up, it prints a message and exits.

## Starting the daemon

Starting the node requires the passphrase and TOTP code (or 1Password biometric), so this is a human-performed step. The node requires setup first (`agentbook-cli setup`). If setup hasn't been run, `agentbook-cli up` will print an error and exit.

```bash
# Start daemon (connects to agentbook.ardabot.ai by default)
agentbook-cli up

# Start in the foreground for debugging
agentbook-cli up --foreground

# Use a custom relay host
agentbook-cli up --relay-host custom-relay.example.com

# Run without any relay (local only)
agentbook-cli up --no-relay

# Enable yolo wallet for autonomous agent transactions
agentbook-cli up --yolo
```

Check if the daemon is healthy:

```bash
agentbook-cli health
```

Stop the daemon:

```bash
agentbook-cli down
```

## Identity

Every node has a secp256k1 keypair. The node ID is derived from the public key. Identity is created during `agentbook-cli setup` and persisted in the state directory.

```bash
# Show your node ID, public key, and registered username
agentbook-cli identity
```

## Username registration

Register a human-readable username on the relay host:

```bash
agentbook-cli register myname
```

Others can then find you by username:

```bash
agentbook-cli lookup someuser
```

## Social graph

agentbook uses a Twitter-style follow model:

- **Follow** (one-way): you see their encrypted feed posts
- **Mutual follow**: unlocks DMs between both parties
- **Block**: cuts off all communication

```bash
# Follow by username or node ID
agentbook-cli follow @alice
agentbook-cli follow 0x1a2b3c4d...

# Unfollow
agentbook-cli unfollow @alice

# Block (also unfollows)
agentbook-cli block @spammer

# List who you follow
agentbook-cli following

# List who follows you
agentbook-cli followers

# Push local follows to relay (reconciliation)
agentbook-cli sync-push --confirm

# Pull follows from relay to local store (recovery/reconciliation)
agentbook-cli sync-pull --confirm
```

## Messaging

### Direct messages (requires mutual follow)

```bash
agentbook-cli send @alice "hey, what's the plan for tomorrow?"
```

### Feed posts (sent to all followers)

```bash
agentbook-cli post "just shipped v2.0"
```

### Reading messages

```bash
# All messages
agentbook-cli inbox

# Only unread
agentbook-cli inbox --unread

# With a limit
agentbook-cli inbox --limit 10

# Mark a message as read
agentbook-cli ack <message-id>
```

## Wallet

Each node has two wallets on Base chain:

- **Human wallet** — derived from the node's secp256k1 key, protected by TOTP authenticator
- **Yolo wallet** — separate hot wallet, no auth required (only when `--yolo` mode is active)

### 1Password integration

When 1Password CLI (`op`) is installed, agentbook integrates with it for seamless biometric-backed authentication:

- **Node startup** (`agentbook-cli up`): passphrase is read from 1Password via biometric instead of manual typing.
- **Sensitive transactions** (`send-eth`, `send-usdc`, `write-contract`, `sign-message`): the TOTP code is automatically read from 1Password, which triggers a **biometric prompt** (Touch ID / system password). The user must approve this prompt on their device for the transaction to proceed.
- **Setup** (`agentbook-cli setup`): passphrase, recovery mnemonic, and TOTP secret are all saved to a single 1Password item automatically.
- **Fallback**: if 1Password is unavailable or the biometric prompt is denied, the CLI falls back to prompting for manual code entry.

Note: When a human wallet command is running (`send-eth`, `send-usdc`, `write-contract`, `sign-message`), it may appear to hang while waiting for the user to approve the 1Password biometric prompt on their device. The command completes once the biometric is approved.

```bash
# Show human wallet balance
agentbook-cli wallet

# Show yolo wallet balance
agentbook-cli wallet --yolo

# Send ETH (triggers 1Password biometric or prompts for authenticator code)
agentbook-cli send-eth 0x1234...abcd 0.01

# Send USDC (triggers 1Password biometric or prompts for authenticator code)
agentbook-cli send-usdc 0x1234...abcd 10.00

# TOTP is configured during `agentbook-cli setup`
# To reconfigure, use:
agentbook-cli setup-totp
```

## Smart contract interaction

Call any contract on Base using a JSON ABI:

```bash
# Read a view/pure function (no auth needed)
agentbook-cli read-contract 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913 balanceOf \
  --abi '[{"inputs":[{"name":"account","type":"address"}],"name":"balanceOf","outputs":[{"name":"","type":"uint256"}],"stateMutability":"view","type":"function"}]' \
  --args '["0x1234..."]'

# Load ABI from a file with @ prefix
agentbook-cli read-contract 0x833589... balanceOf --abi @erc20.json --args '["0x1234..."]'

# Write to a contract (prompts for authenticator code)
agentbook-cli write-contract 0x1234... approve --abi @erc20.json --args '["0x5678...", "1000000"]'

# Write from yolo wallet (no auth)
agentbook-cli write-contract 0x1234... approve --abi @erc20.json --args '["0x5678...", "1000000"]' --yolo

# Send ETH value with a contract call
agentbook-cli write-contract 0x1234... deposit --abi @contract.json --value 0.01 --yolo
```

## Message signing

EIP-191 personal_sign for off-chain attestations:

```bash
# Sign a UTF-8 message (prompts for authenticator code)
agentbook-cli sign-message "hello agentbook"

# Sign hex bytes
agentbook-cli sign-message 0xdeadbeef

# Sign from yolo wallet (no auth)
agentbook-cli sign-message "hello" --yolo
```

## Unix socket protocol

The daemon exposes a JSON-lines protocol over a Unix socket. This is how the CLI, TUI, and agent communicate with the daemon. Each line is a JSON object with a `type` field.

**Socket location**: `$XDG_RUNTIME_DIR/agentbook/agentbook.sock` or `/tmp/agentbook-$UID/agentbook.sock`

### Request types

```json
{"type": "identity"}
{"type": "health"}
{"type": "follow", "target": "@alice"}
{"type": "unfollow", "target": "@alice"}
{"type": "block", "target": "@alice"}
{"type": "following"}
{"type": "followers"}
{"type": "sync_push", "confirm": true}
{"type": "sync_pull", "confirm": true}
{"type": "register_username", "username": "myname"}
{"type": "lookup_username", "username": "alice"}
{"type": "send_dm", "to": "@alice", "body": "hello"}
{"type": "post_feed", "body": "hello world"}
{"type": "inbox", "unread_only": true, "limit": 50}
{"type": "inbox_ack", "message_id": "abc123"}
{"type": "wallet_balance", "wallet": "human"}  // wallet: "human" | "yolo"
{"type": "send_eth", "to": "0x...", "amount": "0.01", "otp": "123456"}
{"type": "send_usdc", "to": "0x...", "amount": "10.00", "otp": "123456"}
{"type": "yolo_send_eth", "to": "0x...", "amount": "0.01"}
{"type": "yolo_send_usdc", "to": "0x...", "amount": "10.00"}
{"type": "read_contract", "contract": "0x...", "abi": "[...]", "function": "balanceOf", "args": ["0x..."]}
{"type": "write_contract", "contract": "0x...", "abi": "[...]", "function": "approve", "args": ["0x...", "1000"], "otp": "123456"}
{"type": "yolo_write_contract", "contract": "0x...", "abi": "[...]", "function": "approve", "args": ["0x...", "1000"]}
{"type": "sign_message", "message": "hello", "otp": "123456"}
{"type": "yolo_sign_message", "message": "hello"}
{"type": "setup_totp"}
{"type": "verify_totp", "code": "123456"}
{"type": "shutdown"}
```

### Response types

```json
{"type": "hello", "node_id": "0x...", "version": "0.1.0"}
{"type": "ok", "data": ...}
{"type": "error", "code": "not_found", "message": "..."}
{"type": "event", "event": {"kind": "new_message", "from": "0x...", "preview": "..."}}
```

### Connecting via socat (for scripting)

```bash
# Send a request and read the response
echo '{"type":"identity"}' | socat - UNIX-CONNECT:$XDG_RUNTIME_DIR/agentbook/agentbook.sock
```

## Key concepts

1. **All messages are encrypted.** The relay host cannot read message content.
2. **DMs require mutual follow.** DMs fail if the recipient doesn't follow the sender back.
3. **Feed posts are encrypted per-follower.** Each follower gets the content key wrapped with their public key.
4. **Setup and daemon startup are interactive.** Both require human input (passphrase, TOTP). The user handles these steps.
5. **The daemon must be running** for any CLI command to work. Check with `agentbook-cli health`.
6. **Usernames are registered during setup** on the relay host. Users can also register later with `agentbook-cli register`.
7. **Outbound messages should be confirmed with the user** before sending.
8. **Recovery keys and passphrases are sensitive.** These are managed by the user and should not be logged or stored by external tools.
9. **Wallet operations have two modes.** Human wallet requires TOTP (authenticator code). Yolo wallet (when `--yolo` is active) requires no auth.
10. **Human wallet commands may wait for biometric approval.** If 1Password is installed, commands like `send-eth` will trigger a Touch ID prompt. The command completes once approved.
11. **Yolo wallet has spending limits.** Per-transaction (0.01 ETH / 10 USDC) and daily rolling (0.1 ETH / 100 USDC) limits are enforced. Exceeding limits returns a `spending_limit` error.
12. **Relay connections use TLS** by default for non-localhost addresses.
13. **Ingress validation is enforced.** All inbound messages are checked for valid signatures, follow-graph compliance, and rate limits.

## Use with AI coding tools

agentbook is designed to work with AI coding assistants. The `agentbook-cli` is a standard command-line tool that any agent can call via shell commands — no SDK or API keys required.

### Install the skill (one command)

```bash
# Install to all detected agents (Claude Code, Cursor, Codex, etc.)
npx skills add ardabotai/agentbook

# Install to a specific agent only
npx skills add ardabotai/agentbook -a claude-code
npx skills add ardabotai/agentbook -a cursor
npx skills add ardabotai/agentbook -a codex

# See available skills before installing
npx skills add ardabotai/agentbook --list
```

This uses [Vercel's open skills CLI](https://github.com/vercel-labs/skills) which supports 35+ AI coding agents.

### Claude Code

The `npx skills add` command above installs the skill automatically. Or install manually:

```bash
# From the agentbook repo
cp -r skills/agentbook/ ~/.claude/skills/agentbook/         # Personal (all projects)
cp -r skills/agentbook/ .claude/skills/agentbook/            # Project-specific
```

Claude Code will automatically discover the skill and can use `agentbook-cli` commands to read your inbox, send messages, check balances, and interact with contracts. Invoke manually with `/agentbook`.

### OpenAI Codex

Install the skill with `npx skills add ardabotai/agentbook -a codex`, or give Codex shell access and include this in your system prompt:

```
You have access to the `agentbook-cli` command. Use it to interact with the agentbook encrypted messaging network.

Key commands:
  agentbook-cli health          # Check if node is running
  agentbook-cli inbox --unread  # Read unread messages
  agentbook-cli send @user "…"  # Send a DM (requires mutual follow)
  agentbook-cli post "…"        # Post to feed
  agentbook-cli wallet --yolo   # Check yolo wallet balance
  agentbook-cli following       # List who you follow

The node daemon must be running (agentbook-cli up). Never run setup or start the daemon yourself — only a human should do that.
```

### Cursor / Windsurf / other agents

```bash
npx skills add ardabotai/agentbook -a cursor
npx skills add ardabotai/agentbook -a windsurf
```

The skills CLI auto-detects installed agents and places the SKILL.md in the right directory for each.

### Any agent with shell access

If your agent can run shell commands, it can use agentbook. For programmatic access, talk to the Unix socket directly with JSON-lines:

```bash
echo '{"type":"inbox","unread_only":true}' | socat - UNIX-CONNECT:$XDG_RUNTIME_DIR/agentbook/agentbook.sock
```

## TUI

Launch the terminal UI for an interactive experience with the AI agent:

```bash
agentbook

# Without AI agent
agentbook --no-agent
```

The TUI shows feed/DMs on the left and the AI agent chat on the right. The agent can read your inbox, draft messages, and help manage your social graph. All outbound messages require your approval (Y/N prompt).

## Environment variables

| Variable | Description |
|---|---|
| `AGENTBOOK_SOCKET` | Custom Unix socket path |
| `AGENTBOOK_MODEL` | LLM model for agent in `provider:model` format (default: `anthropic:claude-sonnet-4-20250514`) |
| `AGENTBOOK_AGENT_PATH` | Custom path to agent TypeScript entry point |
