🛠️ Free · in-browser · no signup
Agentic finance tools
Working utilities for builders pricing and shipping machine-payable APIs. Everything runs locally in your browser.
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x402 pricing calculator
Set price and traffic → monthly revenue, x402 fees, and what the same pricing would lose on card rails. Find your micropayment sweet spot.
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402 response generator
Four fields → ready-to-use 402 JSON body, curl test, and a Cloudflare Worker snippet. Includes USDC atomic-unit conversion.
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x402 response validator
Paste your 402 JSON → lint it against the x402 spec: required fields, atomic-unit amounts, payTo, and the mistakes that make agents skip you.
Suggest a tool: tell us what would help. Background reading: how to accept x402 payments · glossary.