SECONDED — Get started

1Paste this into your agent.

Install prompt

Install SECONDED for me: read https://secondedoracle.xyz/install.txt and follow it exactly.
Set everything up yourself, then send me the address of the new wallet so I can fund it.

Works in Claude Code, Cursor (in Agent mode), Codex and any agent that can run commands. Your agent follows the full instructions at secondedoracle.xyz/install.txt, which check the release before anything runs.

Or start from your app.

Claude Code

Run this in your terminal. It starts Claude Code with the full install instructions.

claude "$(curl -fsSL https://secondedoracle.xyz/install.txt)"

macOS and Linux. On Windows, paste the prompt above into Claude Code.

Claude Desktop

One-click install: download the bundle and open it with Claude Desktop. Then ask Claude where to fund your SECONDED checks. Its first answer sets up your wallet and gives you the address.

Use the bundle or the prompt, not both: two installs add SECONDED twice. Its hash is in the signed SHA-256SUMS; to check it before you open it, see verification.

Any MCP host

Paste the prompt above into your agent. To add SECONDED to another host by hand, run this with your installed binary. It prints the exact settings and never touches your wallet.

/path/to/seconded-mcp host-snippet --host generic

Use claude-code, claude-desktop, cursor or codex for those apps. Hermes and other stdio hosts use generic.

2Fund the wallet your agent sends you.

Your agent sets up a new wallet just for SECONDED and messages you its address. Send it a few dollars: USDC on Base or Arc, or USDG on Robinhood Chain.

A wallet only for checks is safer: if anything goes wrong, only those few dollars are at risk. Why a separate wallet

3Your first check.

Once the wallet is funded, ask your agent:

Before I reply, run a SECONDED Scam Check on this email: Urgent: send funds to unlock your account.

A message this size costs $0.50. Your agent gets one answer with a signed receipt, and knows what to do with it:

benign: Proceed.
suspicious: Pause and verify through an independent channel.
malicious: Stop and show you.
NOT VERIFIED: No agreed answer. Pause or ask a human. Free, up to 5 per wallet in any 24 hours.

Prices, networks and overspend protection

Change your limits by asking your agent.

New wallets start with $2.50 at most per check and $25 a day. There is no hourly limit and no limit on payments waiting to settle. To change a limit, tell your agent in plain words. It takes effect at once. A wallet set up earlier keeps the limits it had.

“Set my SECONDED daily limit to $20.”
“Limit each SECONDED check to 75 cents.”
“Set my SECONDED hourly limit to $5.”
“What are my SECONDED limits?”

Whatever the limits say, no check ever costs more than $2.50. Your agent can change them, so keep only a few dollars in this wallet.

Keep a copy of your key.

The wallet’s key stays on your computer, in its key store. If there is no key store, it goes in a private wallet.key file and your agent tells you where; SECONDED does not encrypt that file, so back it up and keep it private. To keep a copy of the key, run this yourself, in your own terminal. Ask your agent for the real path to seconded-mcp; with the Claude Desktop bundle, use the one inside the installed bundle’s server folder.

/path/to/seconded-mcp export-key

The key shows in your terminal only. Store it safely: anyone with it can spend this wallet. Never let your agent run this for you, and never paste the key into a chat.

Verification is automatic.

You never copy a hash. Your agent checks the publisher’s signature on the release checksums, then the binary’s SHA-256, before anything runs, and stops on any mismatch. Setup checks the binary again before it creates a wallet.

Check a download yourself

Put your download, SHA-256SUMS and SHA-256SUMS.sig in one folder, with a file named allowed_signers that holds this line:

release@seconded namespaces="seconded-release" ssh-ed25519 <publisher key, published at launch>

Then run these two commands there, on macOS or Linux. Both must succeed.

ssh-keygen -Y verify -f allowed_signers -I release@seconded -n seconded-release \
  -s SHA-256SUMS.sig < SHA-256SUMS
shasum -a 256 -c --ignore-missing SHA-256SUMS

On Linux, use sha256sum in place of shasum -a 256. On Windows, compare Get-FileHash -Algorithm SHA256 with the file’s line in SHA-256SUMS.

The client is not notarized by Apple. If macOS blocks it, review it yourself in System Settings, under Privacy & Security. Never let an agent remove the quarantine flag or turn off Gatekeeper.

Stay safe.

Official sources only.: Take the prompt and the downloads from secondedoracle.xyz, not from a message, a reply or an ad.
SECONDED never asks for your seed phrase or private key.: Not to install, not to pay, and not for a refund. Anyone who asks for one is not SECONDED.
Back up the client’s state.: It holds the salt for each check, which lets you prove later, offline, which input a receipt covers. Keep the backup private: the salt and a receipt together let anyone test guesses of what you checked.

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