Chem

Chemical compound data. 1 pay-per-call chem endpoint for AI agents — keyless, USDC via x402.

chem.compound$0.0010

Look up a chemical compound by CID, common/IUPAC name, SMILES, or InChIKey.

GET /api/chem/compound

Discovery

/api/directory — full catalog of every endpoint
/openapi.json — OpenAPI 3.1 spec
/llms.txt — plain-text manifest for LLM ingestion