Rough bike frame size (seat tube cm and S/M/L) from inseam by bike type, with a ...
https://bike-calc.x402tookit.com/frame-sizeOverview
Rough bike frame size (seat tube cm and S/M/L) from inseam by bike type, with a height-based letter size cross-check.
Protocol
x402
Price
$0.02
Payment Asset
USD Coin
Payment Network
eip155:8453
Category
uncategorized
Provider
Bicycle Gearing & Fit Calc
Source
bazaar
Indexed
2026-10-20 21:22:49
Health
Status
healthy
Latency (p50)
603ms
Uptime (30d)
81.3%
Reliability Score
80.6/100
Last Checked
2026-10-28 06:40:31
Last Healthy
2026-10-28 06:40:31
Consecutive Failures
0
x402 Payment Validation
Payment Requirements
Valid
Asset Verified
Known USDC
Facilitator
—
Input Schema
{
"method": "GET",
"queryParams": {
"bikeType": "road",
"heightCm": 175,
"inseam": 80
},
"type": "http"
}
Output Schema
{
"example": {
"adjacentSizesCm": [
50,
54
],
"asOf": "2026-10-12T01:50:56.921Z",
"bikeType": "road",
"degraded": false,
"disclaimer": "Screening signal computed from the named public source. Not financial, legal or investment advice; provided as is. Verify at the source before acting.",
"factor": 0.65,
"heightCm": 175,
"inseamCm": 80,
"letterSizeFromHeight": "M",
"mountainBikeInchesIfApplicable": null,
"nearestEvenCm": 52,
"notChecked": [
"frame geometry differences between brands (reach and stack matter more than seat-tube length)",
"torso and arm length, flexibility and riding position",
"…1 more"
],
"reasons": [
"Frame size is a starting point: compare reach and stack with a bike you already ride comfortably.",
"Compact road frames list a virtual seat tube, so brands differ."
],
"seatTubeCm": 52,
"seatTubeInches": 20.5,
"source": "computed locally (inseam x type factor; common manufacturer height charts)",
"summary": "A road bike: seat tube about 52 cm (52 cm in even sizes); height 175 cm suggests M.",
"verdict": "COMPUTED"
},
"type": "json"
}