Assemble an ISO 8601 duration string from individual components (years, months,
Assemble an ISO 8601 duration string from individual components (years, months, weeks, days, hours, minutes, seconds) and an optional sign. All components must be non-negative and at least one must be non-zero.
Answeringour last check, 2026-09-24
1 of 1checks answered this week
471 msmedian answer time
$0.002listed price per call
$0.002price 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
POST https://datetime.openverbs.com/v1/format
| Category | Everything else |
|---|---|
| Provider host | datetime.openverbs.com |
| 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 | $0.002 | 471 ms |
Example input (from the provider)
{
"body": {
"months": 1,
"years": 1
},
"bodyType": "json",
"method": "POST",
"type": "http"
}
Promised output schema (from the provider)
{
"$schema": "https://json-schema.org/draft/2020-12/schema",
"properties": {
"input": {
"additionalProperties": false,
"properties": {
"body": {
"additionalProperties": false,
"properties": {
"days": {
"description": "Days.",
"minimum": 0,
"type": "number"
},
"hours": {
"description": "Hours.",
"minimum": 0,
"type": "number"
},
"minutes": {
"description": "Minutes.",
"minimum": 0,
"type": "number"
},
"months": {
"description": "Months.",
"minimum": 0,
"type": "number"
},
"seconds": {
"description": "Seconds.",
"minimum": 0,
"type": "number"
},
"sign": {
"description": "Overall sign. Default 1.",
"enum": [
1,
-1
],
"type": "integer"
},
"weeks": {
"description": "Weeks.",
"minimum": 0,
"type": "number"
},
"years": {
"description": "Years.",
"minimum": 0,
"type": "number"
}
},
"type": "object"
},
"bodyType": {
"enum": [
"json",
"form-data",
"text"
],
"type": "string"
},
"method": {
"enum": [
"POST"
],
"type": "string"
},
"type": {
"const": "http",
"type": "string"
}
},
"required": [
"type",
"method",
"bodyType",
"body"
],
"type": "object"
}
},
"required": [
"input"
],
"type": "object"
}