Task

Physical Constants Dataset

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.

Constant list x402 REST usage

List every physical constant in the dataset, or only those in a given category (universal, adopted, electromagnetic, atomic, physico-chemical). Returns the constants, the total count and the set of available categories.

physics.openverbs.com Other services 3 calls / 30d checked 2026-10-26

0.004 USDC per call per call

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