x402 · Base mainnet · USDC

Weight Converter API

A pay-per-call HTTP API that converts weight and mass between units. Requests are protected by the x402 protocol: unpaid calls receive an HTTP 402 challenge, and settlement runs through the Coinbase CDP facilitator with Base Builder Code attribution.

Endpoint

GET /api/convert-weight?value=10&from=kg&to=lb

Priced at $0.001 USDC per call. Pay with any compliant x402 client to receive the converted result as JSON.

Supported units

mgmilligram
ggram
kgkilogram
tmetric ton (tonne)
ozounce
lbpound
ststone
ton_usUS ton (short ton)
ton_ukUK ton (long ton)
ctcarat
grgrain

Example response

{
  "value": 10,
  "from": "kg",
  "to": "lb",
  "result": 22.0462262185
}