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✓Gold402 Verified Finance & FX

Tollbooth

https://x402toll.com

Our Verdict

Gold402 Verified. Hand-reviewed and on the curated list — curation is the bar.

56 financial, tax, and legal calculators for AI agents (income tax, self-employment/estimated tax, capital gains, LLC/entity comparison, mortgage/loan, retirement/RMD/Social Security, crypto/DeFi, sales tax). Each response includes its 2026 IRS/SSA source, a formula trace, and a reproducible SHA-256 hash, plus a free golden-vector self-check endpoint. $0.02-$1.00 USDC on Base. MCP: `npx tollbooth-x402`. ([OpenAPI](https://x402toll.com/v1/openapi.json))

API / Service · APIs & Services

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