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x402.forgemesh.io chemical-formula-weight
https://x402.forgemesh.io/chemical-formula-weight
payable
Molecular weight calculator for chemical formulas: parses parentheses and hydrate notation to return total molar mass, atom counts, and the mass contribution of each element. For chemistry coursework, reagent prep, and formulation agents needing an exact figure instead of an estimated one.
We sent a real
POST request to this endpoint and it
answered 402 with payment requirements we could parse.
- Price
- $0.003
- Network
- base
- Pay to
- 0x850363a27F0aC6fEb9C7a3eC4C1d295262dF9432
- Spec dialect
- v2 (declares x402Version 2)
- Transport
- PAYMENT-REQUIRED header
- HTTP method
- POST
- Response latency
- 45 ms
- Payment options
- 1 usable of 1
- Last checked
- 2026-08-10T09:17:28.465Z (3d ago)
- Category
- other
Re-check it yourself:
curl "https://api.the402.dev/validate?url=https%3A%2F%2Fx402.forgemesh.io%2Fchemical-formula-weight"