WritersLogic Verifiable AI Agent Hub Lot Pick API
The Lot Pick API from WritersLogic Verifiable AI Agent Hub — 1 operation(s) for lot pick.
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curl "https://apis.io/api/v1/apis/writerslogic-com:writerslogic-com-lot-pick-api"
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OpenAPI Specification
openapi: 3.2.0
info:
title: WritersLogic Verifiable AI Agent Hub Lot Pick 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: Lot Pick
paths:
/api/v1/lot-pick:
post:
operationId: lot_pick
summary: Choose which inventory lots to pick (FIFO, FEFO, LIFO, fewest lots)
description: 'Allocates a demand quantity across up to 200 inventory lots under a stated policy (FIFO by received date, FEFO by expiry, LIFO, or fewest lots), excluding held, expired, short-shelf-life and wrong-location lots, in whole case multiples if asked. For warehouse and order agents. Returns the pick plan, the shortfall and a reason for every excluded lot. A caller asOf date is required (the check never reads the clock). pass: demand fully covered; fail: the eligible stock cannot cover it (shortfall in the witness); unknown: a date the policy or shelf-life rule needs is missing or the dates are unusable. It does not reserve stock, handle partial-lot reservations or choose locations by travel distance.
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/lot-pick
security:
- x402: []
- apiKey: []
requestBody:
required: true
content:
application/json:
schema:
type: object
additionalProperties: false
required:
- asOf
- demand
- policy
- lots
properties:
asOf:
type: string
maxLength: 10
description: 'Reference date, YYYY-MM-DD. An expiry date is the last usable day: a lot expiring on asOf has 0 days left.'
pattern: ^\d{4}-\d{2}-\d{2}$
demand:
type: integer
description: Units wanted (whole units).
minimum: 0
maximum: 1000000000
policy:
type: string
enum:
- FIFO
- FEFO
- LIFO
- MIN_LOTS
description: 'FIFO: oldest received first. FEFO: earliest expiry first. LIFO: newest received first. MIN_LOTS: fewest lots (largest usable first; ties by earlier expiry, then id).'
lots:
type: array
items:
type: object
required:
- id
- qty
properties:
id:
type: string
maxLength: 64
description: Lot id (unique).
qty:
type: integer
description: Units on hand.
minimum: 0
maximum: 1000000000
expiry:
type: string
maxLength: 10
description: Last usable day, YYYY-MM-DD.
pattern: ^\d{4}-\d{2}-\d{2}$
received:
type: string
maxLength: 10
description: Date received, YYYY-MM-DD.
pattern: ^\d{4}-\d{2}-\d{2}$
location:
type: string
maxLength: 64
description: Location label.
hold:
type: boolean
description: 'Quality or admin hold: never picked.'
maxItems: 200
minItems: 1
description: At most 200.
minShelfLifeDays:
type: integer
description: Exclude lots with fewer than this many days left at asOf (needs expiry on every non-held lot).
minimum: 0
maximum: 36500
pickMultiple:
type: integer
description: Each lot contributes whole multiples of this case size (default 1).
minimum: 1
maximum: 1000000
allowOverpick:
type: boolean
description: 'With pickMultiple, allow the last pick to round the total up to a whole case (default false: leave the remainder as shortfall).'
allowedLocations:
type: array
items:
type: string
maxLength: 64
description: Location label.
maxItems: 50
description: If set, lots elsewhere (or without a location) are excluded.
example:
asOf: '2026-11-04'
demand: 150
policy: FEFO
lots:
- id: L-100
qty: 100
expiry: '2026-12-01'
- id: L-200
qty: 80
expiry: '2026-11-20'
- id: L-300
qty: 500
expiry: '2026-11-01'
- id: L-400
qty: 60
expiry: '2027-03-01'
hold: true
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.'
picks:
type: array
items:
type: object
properties:
lotId:
type: string
qty:
type: integer
remainingInLot:
type: integer
shelfLifeDays:
anyOf:
- type: integer
description: Days from asOf to expiry, or null when the lot has no expiry.
- type: 'null'
picked:
type: integer
shortfall:
type: integer
description: Demand not covered.
excluded:
type: array
items:
type: object
properties:
lotId:
type: string
reason:
type: string
policy:
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:
- Lot Pick
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