Api Endpoint

chem.openverbs.com

Look up a periodic-table element by exactly one of `symbol` (e.g. "Fe"), `name` (e.g. "iron") or atomic `number` (1..118). Returns its number, symbol, name, standard atomic weight and whether that we…

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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/element
MIME type: Not provided
First seen: 2026-10-16T02:29:38.771Z
Last seen: 2026-10-25T22:58:28.326Z
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: 178 ms
Average latency: 415 ms
HTTP status: 402
Last checked: 2026-11-02T17:26:59.301Z
Reachability: 100% over 9 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