The Delegation Contract Check API from WritersLogic Verifiable AI Agent Hub — 1 operation(s) for delegation contract check.
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openapi: 3.2.0
info:
title: WritersLogic Verifiable AI Agent Hub Delegation Contract…
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: Delegation Contract Check
paths:
/api/v1/delegation-contract-check:
post:
operationId: delegation_contract_check
summary: Check that a sub-agent delegation states objective, acceptance criteria…
description: 'Checks the brief an agent is about to hand to another agent: the required parts are present and non-empty (objective, acceptance criteria, a budget with at least one positive numeric bound, required evidence, stop conditions; output format if required), nothing is duplicated, and acceptance criteria are not made only of vague wording (a small labelled word list: good, appropriate, if possible ...). fail = a required part is missing or a budget bound is not positive; unknown = only vague-wording hints or repeated entries; pass = all present and distinct. Does not judge whether the task is sensible or the criteria sufficient.
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/delegation-contract-check
security:
- x402: []
- apiKey: []
requestBody:
required: true
content:
application/json:
schema:
type: object
additionalProperties: false
required: []
properties:
objective:
type: string
maxLength: 2000
acceptanceCriteria:
type: array
maxItems: 30
items:
type: string
maxLength: 2000
budget:
type: object
additionalProperties: false
properties:
maxTokens:
type: integer
minimum: 0
maximum: 10000000000
maxUsd:
type: number
minimum: 0
maximum: 1000000
maxSeconds:
type: integer
minimum: 0
maximum: 31536000
maxToolCalls:
type: integer
minimum: 0
maximum: 10000000
evidenceRequired:
type: array
maxItems: 30
items:
type: string
maxLength: 2000
description: What the delegate must return as proof (links, test output, file paths).
stopConditions:
type: array
maxItems: 30
items:
type: string
maxLength: 2000
description: When the delegate must stop and report (done, blocked, budget spent).
outputFormat:
type: string
maxLength: 2000
require:
type: array
minItems: 1
maxItems: 6
items:
type: string
enum:
- objective
- acceptanceCriteria
- budget
- evidenceRequired
- stopConditions
- outputFormat
description: 'Parts that must be present. Default: objective, acceptanceCriteria, budget, evidenceRequired, stopConditions.'
example:
objective: List every endpoint in src/routes that lacks auth middleware.
acceptanceCriteria:
- Output is a JSON array of {file,line,route}
- Every file under src/routes was read
budget:
maxToolCalls: 40
maxSeconds: 300
evidenceRequired:
- paths of files read
stopConditions:
- all files read
- 'budget spent: report partial results'
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.'
missing:
type: array
items:
type: string
vagueCriteria:
type: array
items:
type: integer
description: Indexes of acceptance criteria containing vague wording (heuristic word list).
budgetBounds:
type: array
items:
type: string
description: Budget fields that are set to a positive value.
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:
- Delegation Contract 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