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Api Endpoint

chem.openverbs.com

Compute the molar mass (g/mol) of a chemical formula. Supports nested parentheses and brackets, element multipliers, and hydrate dot notation with coefficients (e.g. "Ca(OH)2", "CuSO4·5H2O", "K4[Fe(C…

Open interactive test console

Offering

Provider
chem.openverbs.com
Method
GET
Offering type
Api Endpoint
Transport type
http
Category
Science And Education
Delivery
Not provided
Pricing model
Not provided
x402 version
1

Endpoint context

URL
https://chem.openverbs.com/v1/molar-mass
MIME type
Not provided
First seen
2026-10-16T02:29:38.771Z
Last seen
Tags
None supplied

Website

Payment pricing

x402 payment terms are the authoritative price for calling this endpoint.

Payment option 1
0.004 USDC
Atomic price: 4000 · Network: eip155:8453 · Asset: USDC · Scheme: exact
Raw x402 terms
[
  {
    "scheme": "exact",
    "network": "eip155:8453",
    "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
    "amount": "4000",
    "payTo": "0xb3f4de103F34b99f0Da19B4F16D6B53a14C2194A"
  }
]

Observed health

Status
Healthy
Latest latency
170 ms
Average latency
362 ms
HTTP status
402
Last checked
Reachability
100% over 13 checks

Latency is measured to the first response headers. A reachable result does not verify response accuracy or merchant identity.

Input schema

{}

Output schema

null