WritersLogic Verifiable AI Agent Hub Temporal Constraints API
The Temporal Constraints API from WritersLogic Verifiable AI Agent Hub — 1 operation(s) for temporal constraints.
Work with this as data
Every API here is available over the APIs.io API and to AI agents over MCP.
MCP server
One button, every client — Claude, Cursor, VS Code and the rest.
https://apis.io/mcp
Tools for apis
7 MCP tools reach this
find_apisBrowse and filter every API in the catalog.get_api_artifactsOne API's artifacts, grouped by type.get_openapiThe primary OpenAPI for this API.find_similar_apisAPIs that look like this one.apis_io_searchSTART HERE — APIs, providers and tags for one query, each with its total.resolveTurn a domain, URL or GitHub org into the provider it belongs to.find_cohortsEvery scored population of providers in the catalog.
Call it yourself
curl for this page
This API
curl "https://apis.io/api/v1/apis/writerslogic-com:writerslogic-com-temporal-constraints-api"
All apis
curl "https://apis.io/api/v1/apis?limit=25"Calls without X-API-Key need no key. Calls with it need a paid plan — get a key.
Get an API key
Free tier, no form to fill in. Signing in shares your email address with us — we store it to create your key and to recognise you if you sign in with another provider. See our Privacy Policy and Terms.
A second provider on the same verified email joins the account you already have.
OpenAPI Specification
openapi: 3.2.0
info:
title: WritersLogic Verifiable AI Agent Hub Temporal Constraints…
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: Temporal Constraints
paths:
/api/v1/temporal-constraints:
post:
operationId: temporal_constraints
summary: Are these timing constraints satisfiable?
description: 'Solves a simple temporal network: up to 40 named time points, up to 200 difference constraints ''b is between min and max minutes after a'' and optional fixed instants, relative to a caller origin instant. When consistent it returns each point''s earliest and latest feasible instant (where bounded); when not, it returns the cycle of constraints that contradict each other, with the total impossible slack in minutes. Built for an agent checking an itinerary, project plan or SLA chain (''review within 2 days of draft, filing at least 3 days after review, filing fixed on a date''). Integer minutes only; no calendars or business days (compute those with business-deadline first), and disjunctions (''A before B or B before A'') are not expressible.
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/temporal-constraints
security:
- x402: []
- apiKey: []
requestBody:
required: true
content:
application/json:
schema:
type: object
additionalProperties: false
required:
- origin
- points
- constraints
properties:
origin:
type: string
pattern: ^\d{4}-\d{2}-\d{2}[Tt ]\d{2}:\d{2}(:\d{2}(\.\d{1,9})?)?(Z|z|[+-]\d{2}:?\d{2})$
maxLength: 36
description: Instant that point 'origin' (an implicit extra point) is at; all minutes are relative to it.
points:
type: array
minItems: 1
maxItems: 40
items:
type: string
pattern: ^[A-Za-z0-9_.-]{1,40}$
maxLength: 40
constraints:
type: array
maxItems: 200
items:
type: object
required:
- a
- b
properties:
id:
type: string
maxLength: 40
a:
type: string
maxLength: 40
b:
type: string
maxLength: 40
minMinutes:
type: integer
minimum: -10000000
maximum: 10000000
description: b - a >= min
maxMinutes:
type: integer
minimum: -10000000
maximum: 10000000
description: b - a <= max
fixed:
type: array
maxItems: 40
items:
type: object
required:
- point
- at
properties:
point:
type: string
maxLength: 40
at:
type: string
pattern: ^\d{4}-\d{2}-\d{2}[Tt ]\d{2}:\d{2}(:\d{2}(\.\d{1,9})?)?(Z|z|[+-]\d{2}:?\d{2})$
maxLength: 36
example:
origin: '2026-11-02T09:00:00Z'
points:
- draft
- review
- filing
constraints:
- id: c1
a: draft
b: review
minMinutes: 0
maxMinutes: 2880
- id: c2
a: review
b: filing
minMinutes: 4320
fixed:
- point: draft
at: '2026-11-02T09:00:00Z'
- point: filing
at: '2026-11-09T09:00:00Z'
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.'
consistent:
type: boolean
windows:
type: array
items:
type: object
properties:
point:
type: string
earliestUtc:
type: string
latestUtc:
type: string
earliestMinutes:
type: integer
latestMinutes:
type: integer
slackMinutes:
type: integer
unbounded:
type: array
items:
type: string
description: Points with no finite earliest or latest time relative to the origin.
conflict:
type: array
items:
type: object
properties:
constraint:
type: string
text:
type: string
description: Constraints forming a contradictory cycle.
impossibleByMinutes:
type: integer
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:
- Temporal Constraints
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