watch.wallet

Know the second
your wallet moves.

Watch any address on Bitcoin, Ethereum, Base, Polygon or Solana, or a price, and get an email, a push, or a phone call that wakes you up.

Start watching, free

Sign in with just your email. Three watches are free. No keys, no wallet connect: we only read public balances.

1Paste an address

Your cold wallet, the company treasury, the multisig, the address you think was compromised. Any chain we list, no signature needed.

2We read it

Every minute on Watcher, every 15 on free. The native coin, USDC and USDT. A Bitcoin transaction counts as soon as it hits the mempool.

3It moves, you know

Email and a push straight away. On Watcher, a phone call that rings until you pick up, and a signed webhook for your bots.

Why a phone call

A drained wallet is drained in minutes, often at night. An email you read at breakfast is too late to move what is left. A phone call wakes you up, says what moved and how much, and you press 1 to say you saw it.

Also good for: price levels (BTC below $60,000, ETH above $5,000), a treasury that should never move without a meeting, and an exchange deposit you are waiting on.

Try it: look up any address

Free, no sign-in. One look, no alerts.

Plans

Free

$0

  • 3 watches
  • Checked every 15 minutes
  • Email and push

Watcher

$5/30 days or $39 a year

  • 50 watches
  • Checked every minute
  • Phone calls that wake you up
  • Signed webhooks
  • Only alert above a dollar amount
Get Watcher

Paid once in crypto through CoinPay. No subscription: pay again to extend. If it lapses nothing is deleted; your first three watches keep running on the free plan.

For agents and bots

bunx @profullstack/watchwallet check ethereum 0x…        # one balance, no key
bunx @profullstack/watchwallet add base 0x… --label=Treasury
claude mcp add watchwallet -- bunx @profullstack/watchwallet mcp

Every alert can POST a signed JSON webhook to your URL. Full API, CLI and MCP on the help page.