Try AgentTax — No Signup Required

Calculate sales tax for any AI agent transaction. Enter your details below and get a real response from the AgentTax engine — the same API your agents will call in production.

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Get a free API key — 100 calls/month, no credit card. Same engine, full audit trails, transaction history, and nexus monitoring.

Use this in your code

The playground calls the same endpoint your agents will use. Here's the equivalent curl:

curl -X POST https://agenttax.io/api/v1/calculate \
  -H "Content-Type: application/json" \
  -H "X-API-Key: YOUR_API_KEY" \
  -d '{
    "role": "seller",
    "amount": 5000,
    "buyer_state": "TX",
    "transaction_type": "saas",
    "counterparty_id": "your_agent_id"
  }'