WritersLogic Verifiable AI Agent Hub Lease API
The Lease API from WritersLogic Verifiable AI Agent Hub — 1 operation(s) for lease.
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OpenAPI Specification
openapi: 3.2.0
info:
title: WritersLogic Verifiable AI Agent Hub Lease 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: Lease
paths:
/api/v1/lease:
post:
operationId: lease
summary: 'Short lease with fencing tokens: claim a task for N seconds, renew, release'
description: 'Lets many agents agree which one works on a task: acquire a named resource for 1-3600 s, renew it while working, release it when done. Every new acquisition returns a strictly larger fencing token; pass it to the downstream store and reject writes carrying a smaller one, so a paused holder whose lease expired cannot clobber its successor. Re-acquiring as the current holder extends the lease with the same token. Scoped to the paying wallet (or tenantId for API-key callers). Not a distributed-systems guarantee beyond that: a lost lease is detected by renew failing.
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: agent-infra
x-sample-url: https://agents.writerslogic.com/api/v1/samples/lease
security:
- x402: []
- apiKey: []
requestBody:
required: true
content:
application/json:
schema:
type: object
additionalProperties: false
required:
- op
- resource
properties:
op:
type: string
enum:
- acquire
- renew
- release
- get
resource:
type: string
pattern: ^[A-Za-z0-9_.:/@+-]{1,200}$
description: Task or resource name, e.g. invoice:INV-1009 or deploy:prod.
holder:
type: string
minLength: 1
maxLength: 128
description: Your worker id. Required for acquire, renew and release.
ttlSeconds:
type: integer
minimum: 1
maximum: 3600
description: Lease length; default 30.
token:
type: integer
minimum: 1
description: Fencing token from acquire; required for renew and release.
tenantId:
type: string
pattern: ^[A-Za-z0-9_.-]{1,64}$
description: 'Required for API-key callers (namespaced as key:<tenantId>; keep it unguessable). Ignored when a wallet paid: the payer address is the tenant.'
requestId:
type: string
pattern: ^[A-Za-z0-9_.:-]{1,128}$
description: 'Caller-chosen id for this mutation. A retry with the same id and same input returns the stored response (24 h) instead of applying twice; the same id with different input is rejected. Send one on every mutation you may retry: without it a retry is applied again (fleet-memory record appends a duplicate; a repeated spend-ledger commit or release answers NO_HOLD because the first call already took effect).'
example:
op: acquire
resource: invoice:INV-1009
holder: worker-7
ttlSeconds: 60
requestId: w7-claim-INV-1009
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.'
op:
type: string
granted:
type: boolean
description: 'acquire/renew: you hold the lease now. release: it is released. get: someone holds it.'
holder:
anyOf:
- type: string
description: Current holder, or null.
- type: 'null'
description: Current holder, or null.
fencingToken:
anyOf:
- type: integer
description: Token of the current lease, or null.
- type: 'null'
description: Token of the current lease, or null.
expiresAt:
anyOf:
- type: string
description: ISO time the current lease lapses, or null.
- type: 'null'
description: ISO time the current lease lapses, or null.
replayed:
type: boolean
description: True when this response was replayed for a repeated requestId.
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:
- Lease
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