the402 endpoint detail

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2s.io bio gene

https://2s.io/api/bio/gene

payable

Look up a gene by its official symbol (e.g. "TP53", "BRCA1", "CFTR") and organism (taxid, default 9606 = human), merging NCBI Gene with UniProt. Returns the gene symbol, NCBI Gene ID, full description, organism, chromosome + cytogenetic map location, alias symbols, and the curated RefSeq function summary; plus the reviewed protein from UniProt — accession, entry id, recommended protein name, lengt

We sent a real GET request to this endpoint and it answered 402 with payment requirements we could parse.
Price
$0.0048
Network
base
Pay to
0x2b6D4988Db4723E6908Db86Ab2b8dFBc51FC32C5
Spec dialect
v2 (declares x402Version 2)
Transport
PAYMENT-REQUIRED header
HTTP method
GET
Response latency
81 ms
Payment options
2 usable of 2
Last checked
2026-08-10T09:17:44.753Z (1d ago)
Category
search

Re-check it yourself:
curl "https://api.the402.dev/validate?url=https%3A%2F%2F2s.io%2Fapi%2Fbio%2Fgene"