datetime.openverbs.com
https://datetime.openverbs.com/v1/convertPaid verification
How it worksNo sponsored paid call yet.
Pay this endpoint once from your own wallet (Base USDC, up to $1.00) and we call it and record what came back. Your wallet pays the listed recipient directly; Agent Tools never holds funds. Sponsored checks prove delivery; they do not count as demand.
Quality grade
How grading works- ✓ Answers a real HTTP 402 challenge
- ✓ Publishes a /.well-known/x402 descriptor
- ✓ Payment address on record
- ✓ Settlement network declared
- ✓ Price declared
x402 readiness
Readiness is how fully this listing follows its protocol and how it behaved in our probes over 30 days. It is shown for reference and does not move it in search. Search order and leaderboards use the separate quality grade (here B+, 65.1/100), which weighs availability, payability and on-chain demand. How the two differ
| Valid payment requirements | 10/10 | Payment requirements carry a payee, a mainnet network and a price. |
| Live 402 challenge | 25/25 | Paid endpoint answers with an HTTP 402 challenge (202 ms). |
| x402 version | n/a | x402 version not observed yet. |
| Signed descriptor | n/a | No x402 standard defines a signed descriptor. |
| Uptime (30 days) | 15/15 | 32/32 probes succeeded over 30 days (100%). |
| Resource declaration | 10/10 | Declares 13 paid resource(s). |
| Verified identity | 5/10 | Publisher descriptor (/.well-known/x402 or OpenAPI) on record; claim this listing to verify domain control. |
| Freshness + modern flags | 1/5 | not seen in a source for over 30 days; declares x402. |
| Security declaration | n/a | Payment is the access control for an x402 resource. |
Compared with peers
Against 10,082 reachable x402 APIs in our daily snapshot (2026-11-12 06:46 UTC). Display only; it does not change search order.
- Readiness
- Higher than 80% of peers
- This listing 88 · peer median 78
- Latency
- Faster than 51% of peers
- This listing 202 ms · peer median 205 ms
Where it loses the most points, and how to win them back
- Verified identity −5
— Claim the listing and prove control of its domain.
Now: Publisher descriptor (/.well-known/x402 or OpenAPI) on record; claim this listing to verify domain control.
- Freshness + modern flags −4
— Keep the listing current in the registry or source it comes from.
Now: not seen in a source for over 30 days; declares x402.
Paid endpoints
13 resource(s) advertised by this origin. Each price below is that resource's own x402 price; the headline price is the range across them.
https://datetime.openverbs.com/v1/convert
Convert an ISO datetime into another timezone, with offset, weekday and Unix time.
https://datetime.openverbs.com/v1/business-days
Add/subtract business days to a date, or count business days between two dates — skipping weekends and optional holidays.
https://datetime.openverbs.com/v1/parse
Parse an ISO 8601 duration such as 'P1Y2M10DT2H30M' into its components. Returns a normalized ISO string and totalSeconds — but totalSeconds is null when the duration contains years or months, because those are calendar-variable (use /v1/add or /v1/between for exact date math).
https://datetime.openverbs.com/v1/format
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.
https://datetime.openverbs.com/v1/humanize
Render an ISO 8601 duration as an English phrase, e.g. 'P1Y2M' → '1 year and 2 months'. Components are shown in descending order with correct pluralization.
https://datetime.openverbs.com/v1/add
Add an ISO 8601 duration to a start date or date-time and return the resulting UTC instant. Calendar-aware: months and years honor month lengths (e.g. Jan 31 + P1M clamps to the last day of February). A negative-signed duration subtracts.
https://datetime.openverbs.com/v1/between
Compute the calendar breakdown (years, months, days, hours, minutes, seconds) between two ISO 8601 dates/date-times, plus exact totalSeconds. If end precedes start the result is flagged negative rather than erroring.
https://datetime.openverbs.com/v1/to-jdn
Convert a proleptic-Gregorian calendar date to its Julian Day Number (the integer count of days since JDN 0, 1 January 4713 BC in the proleptic Julian calendar).
https://datetime.openverbs.com/v1/from-jdn
Convert a Julian Day Number back to a proleptic-Gregorian date, with the ISO weekday (1=Monday..7=Sunday) and its name.
https://datetime.openverbs.com/v1/weekday
Return the ISO weekday (1=Monday..7=Sunday) and its name for a Gregorian date.
https://datetime.openverbs.com/v1/iso-week
Return the ISO-8601 week-numbering year, week number (1..53) and weekday (1=Monday..7=Sunday) for a Gregorian date. The ISO year can differ from the calendar year around New Year.
https://datetime.openverbs.com/v1/easter
Compute the date of Western (Gregorian) Easter Sunday for a year in 1583..9999 using the Anonymous Gregorian computus.
https://datetime.openverbs.com/v1/day-of-year
Return the ordinal day of the year (1..366), the number of days in that year and whether it is a leap year.
How to call
curl -sS -i -X POST https://datetime.openverbs.com/v1/convert # expect HTTP 402 Payment Required (about 0.002 USDC/call)Listed in
Directories this entry was found in.