Build an ISO 8601 duration

Name: Build an ISO 8601 duration service
Creator: Agent GDP
License: https://creativecommons.org/licenses/by/4.0/

Other base

90d All

The service's listing describes it this way: 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. Website

A service is a tool an AI agent pays to call. Build an ISO 8601 duration is listed on this page under Other, settling on Base. 30-day settled volume on this page is $0.00. The listing comes from the service catalog. Open a row for payments, payers, and chains. See Bazaar, agent payment use cases, and the methodology.

Payee

0xb3f4…194aBase

Methodology · settled volume through 2026-10-26 · catalog Oct 26, 2026, 4:02 PM UTC

Settled volume, payments, payers, average payment, use-case share, and rank
Metric	24h	7d	30d
Volume	$0.00	$0.00	$0.00
Payments	0	0	0
Payers	0	0	0
Avg payment	$0.00	$0.00	$0.00
Share of Other	—	—	—
Rank	—	—	—

Payers can be counted more than once when they paid through more than one facilitator. Rank and share stay blank until they are stored.

Settled volume

$0.00

n/a

Payments

Payers

Avg payment

$0.00

volume / payments

Daily volume and buyers

90D 1Y All

No payments in this period.

Data through Oct 26, 2026. Source: public settlement logs. Methodology

Payers

No payments in this period.

Buyer concentration

—

Top payer's share of lifetime volume. Not the period selected above.

Repeat buyers

—

Lifetime buyers with more than one payment, divided by all buyers.

Endpoints and prices

Price, network, and asset come from the x402 Bazaar catalog.

Endpoint	Network	Asset	Price	Scheme
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.	base	USDC	$0.002	exact
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.	base	USDC	$0.002	exact
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.	base	USDC	$0.002	exact
https://datetime.openverbs.com/v1/convert Convert an ISO datetime into another timezone, with offset, weekday and Unix time.	base	USDC	$0.002	exact
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.	base	USDC	$0.002	exact
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.	base	USDC	$0.002	exact
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).	base	USDC	$0.002	exact
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.	base	USDC	$0.004	exact
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.	base	USDC	$0.004	exact
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.	base	USDC	$0.004	exact
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.	base	USDC	$0.004	exact
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).	base	USDC	$0.004	exact
https://datetime.openverbs.com/v1/weekday Return the ISO weekday (1=Monday..7=Sunday) and its name for a Gregorian date.	base	USDC	$0.004	exact

Facilitators used

Facilitator	Volume	Tx	Share
No facilitator mix for this period yet. This list refreshes about once an hour.

Other services in Other

All in this use case

pay.lnpay.ai#1 · $2.10K 30d
StableStudio#2 · $104.19 30d
Pocket Network#3 · $81.97 30d
SolEnrich#4 · $49.49 30d
AgentUtility.ai#5 · $43.50 30d

How we count Build an ISO 8601 duration

We read settlements directly from each chain's public records and refresh them every few minutes.

Data through 2026-10-26. Source: public settlement logs.

Full methodology → · How we compare with other trackers →

Cite this

APA

Agent GDP. (2026). Build an ISO 8601 duration [Data set]. Retrieved October 26, 2026, from https://agentgdp.io/service/datetime.openverbs.com.

MLA

"Build an ISO 8601 duration." Agent GDP, 26 Oct. 2026, https://agentgdp.io/service/datetime.openverbs.com.

BibTeX

@misc{agentgdp_build_an_iso_8601_duration_2026,
  author = {{Agent GDP}},
  title = {Build an ISO 8601 duration},
  year = {2026},
  url = {https://agentgdp.io/service/datetime.openverbs.com},
  note = {Retrieved October 26, 2026. Data through 2026-10-26. Licensed under CC BY 4.0.},
  license = {https://creativecommons.org/licenses/by/4.0/}
}

Plain text

Build an ISO 8601 duration: $0.00 settled volume (7d), 0 payments, 0 buyers. Agent GDP, data through 2026-10-26. https://agentgdp.io/service/datetime.openverbs.com Retrieved October 26, 2026.

Data from Agent GDP (https://agentgdp.io/service/datetime.openverbs.com), licensed under CC BY 4.0 (https://creativecommons.org/licenses/by/4.0/).

Payers on a day can be counted more than once if they paid through more than one facilitator. Growth compares this period with the previous period of the same length. The page link uses the service's site when we have one, and the payee address otherwise.

Volume and payment counts include earlier days. Transaction-level detail available from October 23, 2026.

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Cite this

APA

Agent GDP. (2026). Service settled volume [Data set]. Retrieved October 26, 2026, from https://agentgdp.io/service/datetime.openverbs.com.

MLA

"Service settled volume." Agent GDP, 26 Oct. 2026, https://agentgdp.io/service/datetime.openverbs.com.

BibTeX

@misc{agentgdp_service_settled_volume_2026,
  author = {{Agent GDP}},
  title = {Service settled volume},
  year = {2026},
  url = {https://agentgdp.io/service/datetime.openverbs.com},
  note = {Retrieved October 26, 2026. Licensed under CC BY 4.0.},
  license = {https://creativecommons.org/licenses/by/4.0/}
}

Plain text

Service settled volume. Agent GDP. https://agentgdp.io/service/datetime.openverbs.com. Retrieved October 26, 2026.

Data from Agent GDP (https://agentgdp.io/service/datetime.openverbs.com), licensed under CC BY 4.0 (https://creativecommons.org/licenses/by/4.0/).

Metric

24h

30d

Volume

$0.00

Payments

Payers

Avg payment

$0.00

Share of Other

—

Rank

—

Endpoint

Network

Asset

Price

Scheme

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.

base

USDC

$0.002

exact

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.

base

USDC

$0.002

exact

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.

base

USDC

$0.002

exact

https://datetime.openverbs.com/v1/convert

Convert an ISO datetime into another timezone, with offset, weekday and Unix time.

base

USDC

$0.002

exact

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.

base

USDC

$0.002

exact

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.

base

USDC

$0.002

exact

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).

base

USDC

$0.002

exact

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.

base

USDC

$0.004

exact

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.

base

USDC

$0.004

exact

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.

base

USDC

$0.004

exact

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.

base

USDC

$0.004

exact

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).

base

USDC

$0.004

exact

https://datetime.openverbs.com/v1/weekday

Return the ISO weekday (1=Monday..7=Sunday) and its name for a Gregorian date.

base

USDC

$0.004

exact

Facilitator

Volume

No facilitator mix for this period yet. This list refreshes about once an hour.

Cite this

APA

Agent GDP. (2026). Build an ISO 8601 duration [Data set]. Retrieved October 26, 2026, from https://agentgdp.io/service/datetime.openverbs.com.

MLA

"Build an ISO 8601 duration." Agent GDP, 26 Oct. 2026, https://agentgdp.io/service/datetime.openverbs.com.

BibTeX

@misc{agentgdp_build_an_iso_8601_duration_2026,
  author = {{Agent GDP}},
  title = {Build an ISO 8601 duration},
  year = {2026},
  url = {https://agentgdp.io/service/datetime.openverbs.com},
  note = {Retrieved October 26, 2026. Data through 2026-10-26. Licensed under CC BY 4.0.},
  license = {https://creativecommons.org/licenses/by/4.0/}
}

Plain text

Build an ISO 8601 duration: $0.00 settled volume (7d), 0 payments, 0 buyers. Agent GDP, data through 2026-10-26. https://agentgdp.io/service/datetime.openverbs.com Retrieved October 26, 2026.

Data from Agent GDP (https://agentgdp.io/service/datetime.openverbs.com), licensed under CC BY 4.0 (https://creativecommons.org/licenses/by/4.0/).

Get your badge

Paste this on your site. It says Indexed by Agent GDP, with this name, and it links back to this page.

Source: agentgdp.io · Beta

HTML

<a href="https://agentgdp.io/service/datetime.openverbs.com?utm_source=badge"><img src="https://agentgdp.io/badge/service/datetime.openverbs.com.svg" alt="datetime.openverbs.com · Indexed by Agent GDP" /></a>