Quickstart

This guide takes you from zero to your first response. You will create an API key, fund your wallet, and call the Messages API.

1. Get an API key

Sign in at app.spoofzone.com, open the Keys page, and create a key. It starts with spf_ and is shown only once, so copy it somewhere safe.

See Authentication for the details.

2. Fund your wallet

Every call is paid from your own wallet the moment you make it, so add some funds before your first request. From the dashboard, top up a supported stablecoin (USDC on Base, Arbitrum, or Solana, or USDG on Robinhood).

Nothing is prepaid or held by Spoof. Your balance stays in your wallet and each call draws from it. See Pay-per-call billing.

3. Send your first request

Set your key as an environment variable, then call the Messages API:

curl https://api.spoofzone.com/v1/messages \
-H "x-api-key: $SPOOF_API_KEY" \
-H "content-type: application/json" \
-d '{
  "model": "claude-sonnet-4-6",
  "max_tokens": 1024,
  "messages": [{ "role": "user", "content": "Hello, Spoof!" }]
}'

The response is the model's genuine output, returned exactly as generated. Nothing is rewritten or injected.

Streaming

Set "stream": true to receive server-sent events as the model generates. The event stream matches the Anthropic Messages API, so any compatible client works unchanged. See Streaming.