# Services from x402.laboiteatubes.media on Zero

> x402.laboiteatubes.media serves 3 paid API services for AI agents, indexed by Zero. Each is callable per call with payment handled by Zero.

Canonical page: https://www.zero.xyz/host/x402.laboiteatubes.media
Live health (JSON, refreshed every minute): https://www.zero.xyz/host/x402.laboiteatubes.media/health.json

## Services

- [Loan Amortization Calculator (Coprocesseur Déterministe)](https://www.zero.xyz/c/loan-amortization-calculator-coprocesseur-d-terministe-91a97965/llms.txt): $0.003/call via x402. Computes a complete French-style constant-payment loan amortization schedule, including monthly payment, total cost of credit, and a full repayment table, with a SHA-256 proof of the result.
- [coprocesseur-deterministe — Great-Circle Distance (Haversine)](https://www.zero.xyz/c/coprocesseur-deterministe-great-circle-distance-haversine-44cf45b6/llms.txt): $0.001/call via x402. Computes the great-circle (orthodromic) distance between two geographic coordinates using the Haversine formula on a spherical Earth model, returning distance in km, m, and nautical miles, initial bearing, central angle, and a verifiable SHA-256 proof.
- [Coprocesseur Déterministe – Conversion d'Unités](https://www.zero.xyz/c/coprocesseur-d-terministe-conversion-d-unit-s-6616cee9/llms.txt): $0.001/call via x402. Converts a numeric value from one physical unit to another (length, mass, volume, temperature) and returns the result with its formula, exact conversion factor, and a SHA-256 proof fingerprint.

Status and success rate cover calls made through Zero and Zero's own probes. Third-party monitors may report differently.

- [Zero catalog index](https://www.zero.xyz/llms.txt)