Deterministic unit conversion reproducing NIST SP 811 exact factors (length, mas
Deterministic unit conversion reproducing NIST SP 811 exact factors (length, mass, volume, energy, power, pressure, force, area, speed, data, angle, frequency + affine temperature). Every answer signed. Free sample, no payment required: GET /play/unit
Answeringour last check, 2026-09-24
1 of 1checks answered this week
243 msmedian answer time
$0.001listed price per call
$0.001price it asked us
Paid test badge: not yet. The checks above are free: we call the tool without paying and read the payment request it sends back. The Verified badge needs paid calls whose answers match the promised output, and nobody can buy a badge.
Endpoint
GET https://touchstone.locomot.io/unit
| Category | Everything else |
|---|---|
| Provider host | touchstone.locomot.io |
| Networks | eip155:8453 |
| Payment schemes | exact |
| Self-reported calls, 30 days | 2 from 1 payers (the provider's figure, not ours) |
Our checks, last 30 days
| Day | Result | HTTP | Asked | Time |
|---|---|---|---|---|
| 2026-09-24 | valid payment request | 402 | $0.001 | 243 ms |
Example input (from the provider)
{
"method": "GET",
"queryParams": {
"from": "nautical_mile",
"to": "meter",
"value": 1
},
"type": "http"
}
Promised output schema (from the provider)
{
"$schema": "https://json-schema.org/draft/2020-12/schema",
"properties": {
"input": {
"additionalProperties": false,
"properties": {
"method": {
"enum": [
"GET",
"HEAD",
"DELETE"
],
"type": "string"
},
"queryParams": {
"properties": {
"from": {
"description": "source unit (name or alias, e.g. mile, kg, \u00b0C)",
"type": "string"
},
"to": {
"description": "target unit (same dimension)",
"type": "string"
},
"value": {
"description": "quantity to convert",
"type": "number"
}
},
"required": [
"value",
"from",
"to"
],
"type": "object"
},
"type": {
"const": "http",
"type": "string"
}
},
"required": [
"type",
"method"
],
"type": "object"
},
"output": {
"properties": {
"conversion_factor": {
"type": "number"
},
"conversion_factor_ratio": {
"type": "string"
},
"dimension": {
"type": "string"
},
"exact": {
"type": "boolean"
},
"from": {
"type": "string"
},
"op": {
"type": "string"
},
"result": {
"type": "number"
},
"source": {
"type": "string"
},
"to": {
"type": "string"
},
"value": {
"type": "number"
}
},
"type": "object"
}
},
"required": [
"input"
],
"type": "object"
}