Task

Atomic Number Lookup

1 services carry this tag in their source record. Tags come from the provider, not from us — a tag is a claim about what the service does, not proof that it does it well.

Element lookup x402 REST usage

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 weight is a true standa...

chem.openverbs.com Other services 33 calls / 30d checked 2026-10-26

0.004 USDC per call per call

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