The Time Bucket Check API from WritersLogic Verifiable AI Agent Hub — 1 operation(s) for time bucket check.
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openapi: 3.2.0
info:
title: WritersLogic Verifiable AI Agent Hub Time Bucket Check API
version: 2.0.0
description: Pay-per-call agents settled in USDC on Base via x402. Every response carries a signed provenance envelope.
contact:
name: WritersLogic
url: https://writerslogic.com/agents
email: agents@writerslogic.com
servers:
- url: https://agents.writerslogic.com
tags:
- name: Time Bucket Check
paths:
/api/v1/time-bucket-check:
post:
operationId: time_bucket_check
summary: 'DST hazards for hourly and daily buckets in a zone: skipped hours, repeated…'
description: 'For a time zone and a date range of up to 1100 days, lists every offset transition and what it does to local bucketing: the hourly labels that never occur (spring-forward), the hourly labels that occur twice and would merge two real hours when grouped by local time (fall-back), and the 23-, 24.5- or 25-hour days; optionally checks up to 500 caller hourly labels (YYYY-MM-DDTHH:00) for non-existent or ambiguous ones. Built for an agent aggregating metrics, billing or schedules by local hour or day. It does not bucket your data or choose a policy (bucket by UTC instead is the safe default).
Price: 0.005 USDC on Base (x402).'
x-x402-price-usdc: '0.005'
x-x402-amount: '5000'
x-payment-info:
protocols:
- x402
price:
mode: fixed
currency: USD
amount: '0.005'
x-audience: business
x-sample-url: https://agents.writerslogic.com/api/v1/samples/time-bucket-check
security:
- x402: []
- apiKey: []
requestBody:
required: true
content:
application/json:
schema:
type: object
additionalProperties: false
required:
- timeZone
- from
- to
properties:
timeZone:
type: string
pattern: ^[A-Za-z][A-Za-z0-9_+-]*(/[A-Za-z0-9_+-]+){0,2}$
maxLength: 64
from:
type: string
pattern: ^\d{4}-\d{2}-\d{2}$
maxLength: 10
description: First local date, inclusive.
to:
type: string
pattern: ^\d{4}-\d{2}-\d{2}$
maxLength: 10
description: Last local date, inclusive.
labels:
type: array
maxItems: 500
items:
type: string
pattern: ^\d{4}-\d{2}-\d{2}[Tt ]\d{2}:\d{2}(:\d{2}(\.\d{1,9})?)?$
maxLength: 30
description: Local hour labels to check, e.g. 2026-03-08T02:00.
example:
timeZone: America/New_York
from: '2026-01-01'
to: '2026-12-31'
labels:
- 2026-03-08T02:00
- 2026-11-01T01:00
- 2026-06-01T12:00
responses:
'200':
description: Paid result with provenance
content:
application/json:
schema:
type: object
properties:
data:
type: object
properties:
status:
type: string
enum:
- pass
- fail
- unknown
- unsupported
description: 'pass: every rule held. fail: a rule was violated (see witnesses). unknown: the input lacks the evidence to decide. unsupported: outside what this engine covers. Missing evidence is never a pass.'
transitions:
type: array
items:
type: object
properties:
atUtc:
type: string
localDate:
type: string
offsetBefore:
type: string
offsetAfter:
type: string
kind:
type: string
enum:
- spring-forward
- fall-back
dayHours:
type: number
skippedLocal:
type: array
items:
type: string
repeatedLocal:
type: array
items:
type: string
labelProblems:
type: array
items:
type: object
properties:
label:
type: string
problem:
type: string
enum:
- does-not-exist
- ambiguous
instantsUtc:
type: array
items:
type: string
witnesses:
type: array
items:
type: object
properties:
ruleId:
type: string
detail:
type: string
path:
type: string
description: JSON pointer or dotted path into the input.
offset:
type: integer
index:
type: integer
expected:
description: What the rule required.
actual:
description: What the input had.
versions:
type: object
description: Every semantic dependency of this answer (engine, tables and their as-of dates, tokenizer, calendar, rounding profile).
limits:
type: array
items:
type: string
deterministic:
type: boolean
description: 'Always true: pure code, no model.'
_provenance:
type: object
description: C2PA-aligned manifest and W3C VC 2.0 (eddsa-jcs-2022) issued by the hub DID; verify at POST /api/v1/verify-provenance
required:
- data
- _provenance
'400':
description: Invalid request (no payment consumed)
content:
application/json:
schema:
type: object
properties:
error:
type: string
code:
type: string
'401':
description: Invalid X-API-KEY
content:
application/json:
schema:
type: object
properties:
error:
type: string
code:
type: string
'402':
description: Payment required or invalid
content:
application/json:
schema:
type: object
description: x402 v2 PaymentRequired (also base64 in the PAYMENT-REQUIRED header)
properties:
x402Version:
type: integer
error:
type: string
code:
type: string
resource:
type: object
accepts:
type: array
items:
type: object
extensions:
type: object
'502':
description: Upstream failure; the payment is released or not settled
content:
application/json:
schema:
type: object
properties:
error:
type: string
code:
type: string
tags:
- Time Bucket Check
components:
securitySchemes:
x402:
type: apiKey
in: header
name: PAYMENT-SIGNATURE
description: x402 v2 payment payload (base64) sent after a 402 challenge
apiKey:
type: apiKey
in: header
name: X-API-KEY