📡 warelay — WhatsApp Relay CLI (Twilio)

Small TypeScript CLI to send, receive, auto-reply, and inspect WhatsApp messages via Twilio. Works in polling mode or webhook mode (with Tailscale Funnel helper).

You can also use a personal WhatsApp Web session (QR login) via --provider web for direct sends alongside the Twilio flow.

Quick Start

1. Install: pnpm install
2. Configure .env (see .env.example): set TWILIO_ACCOUNT_SID, TWILIO_AUTH_TOKEN (or TWILIO_API_KEY/TWILIO_API_SECRET), and TWILIO_WHATSAPP_FROM=whatsapp:+15551234567. Optional: TWILIO_SENDER_SID if you don’t want auto-discovery.
3. Send a test: pnpm warelay send --to +12345550000 --message "Hi from warelay"
4. Run auto-replies in polling mode (no public URL needed):
   pnpm warelay relay --provider twilio --interval 5 --lookback 10 --verbose
5. Prefer webhooks? Launch everything in one step (webhook + Tailscale Funnel + Twilio callback):
   pnpm warelay up --port 42873 --path /webhook/whatsapp --verbose

Modes at a Glance

• Polling (relay --provider twilio): Periodically fetch inbound messages to your WhatsApp number. Easiest to start; no ingress needed. Auto-replies still run.
• Webhook (webhook / up): Push delivery from Twilio. webhook runs the server locally; up also enables Tailscale Funnel and points the Twilio sender/webhook to your public Funnel URL (with fallbacks to phone number and messaging service).

Providers (choose per command)

• Twilio (default) — full feature set: send, wait/poll delivery, status, inbound polling/webhook, auto-replies. Requires .env Twilio creds and a WhatsApp-enabled number (TWILIO_WHATSAPP_FROM).
• Web (--provider web) — personal WhatsApp Web session via QR. Supports outbound sends and inbound auto-replies when you run pnpm warelay relay --provider web. No delivery-status polling for web sends. Setup: pnpm warelay web:login (alias: pnpm warelay login) then either send with --provider web or keep relay --provider web running. Session data lives in ~/.warelay/credentials.json; if logged out, rerun web:login/login. Use at your own risk (personal-account automation can be rate-limited or logged out by WhatsApp).

Common Commands

• Send: pnpm warelay send --to +12345550000 --message "Hello" --wait 20 --poll 2
• Send via personal WhatsApp Web: first pnpm warelay web:login (alias: pnpm warelay login, scan QR), then pnpm warelay send --provider web --to +12345550000 --message "Hi"
• Auto-replies (auto provider): pnpm warelay relay (uses web if logged in, otherwise twilio poll)
• Auto-replies (force web): pnpm warelay relay --provider web
• Auto-replies (force Twilio poll): pnpm warelay relay --provider twilio --interval 5 --lookback 10 --verbose
• Webhook only: pnpm warelay webhook --port 42873 --path /webhook/whatsapp --verbose
• Webhook + Funnel + Twilio update: pnpm warelay up --port 42873 --path /webhook/whatsapp --verbose
• Status (recent sent/received): pnpm warelay status --limit 20 --lookback 240 (add --json for machine-readable)

Auto-Reply Config (JSON5 at ~/.warelay/warelay.json)

Claude-style example (your current setup)

{
  inbound: {
    allowFrom: ["***REMOVED***"], // optional allowlist (E.164, no whatsapp: prefix)
    reply: {
      mode: "command",
      bodyPrefix: "You are a helpful assistant running on the user's Mac. User writes messages via WhatsApp and you respond. You want to be concise in your responses, at most 1000 characters.\n\n",
      command: [
        "claude",
        "-p",
        "--output-format",
        "json",
        "--dangerously-skip-permissions",
        "{{BodyStripped}}"
      ],
      session: {
        scope: "per-sender",
        resetTriggers: ["/new"],
        idleMinutes: 60,
        sessionArgNew: ["--session-id", "{{SessionId}}"],
        sessionArgResume: ["--resume", "{{SessionId}}"],
        sessionArgBeforeBody: true
      }
    }
  }
}

Simple text echo

{
  inbound: {
    reply: { mode: "text", text: "Echo: {{Body}}" }
  }
}

Notes:

• Templates support {{Body}}, {{BodyStripped}}, {{From}}, {{To}}, {{MessageSid}}, plus {{SessionId}}/{{IsNewSession}} when session reuse is enabled.
• /new (or any resetTriggers value) resets the session. /new ask… resets and sends ask… as the prompt (via BodyStripped).
• When an auto-reply starts (text or command), warelay sends a WhatsApp typing indicator tied to the inbound MessageSid.

Troubleshooting Delivery

• Auto-reply send failures now print in red with Twilio code/status and the response body (e.g., policy violation 63112). Watch terminal output when running relay, webhook, or up.
• Check recent messages: pnpm warelay status --limit 20 --lookback 240.
• If you must resend while a reply is long-running, keep messages <1600 chars (WhatsApp limit) and avoid restricted content/templates.

Options Reference

Field	Type / Values	Default	Description
inbound.allowFrom	string[]	empty	Allowlist of E.164 numbers (no whatsapp:). If set, only these trigger auto-replies.
inbound.reply.mode	"text" | "command"	—	Auto-reply type.
inbound.reply.text	string	—	Reply body for text mode; templated.
inbound.reply.command	string[]	—	Argv to run for command mode; templated per element. Stdout (trimmed) is sent.
inbound.reply.template	string	—	Optional string inserted as second argv element (prompt prefix).
inbound.reply.bodyPrefix	string	—	Prepends to Body before templating (ideal for system instructions).
inbound.reply.session.scope	"per-sender" | "global"	per-sender	Session key: one per sender or single global chat.
inbound.reply.session.resetTriggers	string[]	["/new"]	Any entry acts as both exact reset token and prefix (/new hi).
inbound.reply.session.idleMinutes	number	60	Expire and recreate session after this idle time.
inbound.reply.session.sessionArgNew	string[]	["--session-id","{{SessionId}}"]	Args inserted for a new session run.
inbound.reply.session.sessionArgResume	string[]	["--resume","{{SessionId}}"]	Args inserted when resuming an existing session.
inbound.reply.session.sessionArgBeforeBody	boolean	true	Place session args before the final body argument.
inbound.reply.timeoutSeconds	number	600	Command timeout.

Dev Notes

• During dev you can run without building: pnpm dev -- <subcommand> (e.g., pnpm dev -- send --to +1...).
• Stop relay/webhook with Ctrl+C. CLI uses pnpm and tsx; no build required for local runs.