The Archive Preflight API from WritersLogic Verifiable AI Agent Hub — 1 operation(s) for archive preflight.
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openapi: 3.2.0
info:
title: WritersLogic Verifiable AI Agent Hub Archive Preflight 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: Archive Preflight
paths:
/api/v1/archive-preflight:
post:
operationId: archive_preflight
summary: 'Archive extraction preflight: zip-slip, duplicate destinations, symlink…'
description: 'Checks a manifest of up to 2000 archive entries (path, type, link target, sizes) before extraction, for an agent that unpacks zip, tar or OOXML files: ../ traversal (also through backslashes), absolute, drive-letter and UNC paths, entries that write through a symlink, symlink and hardlink targets that leave the root, duplicate destinations, case-only and NFC/NFD collisions, Windows reserved names, and declared-size limits. It reads only the manifest you supply: it does not open or decompress the archive, check file contents, or know the extractor''s own sanitising, so a pass means the manifest has no listed hazard.
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: developer
x-sample-url: https://agents.writerslogic.com/api/v1/samples/archive-preflight
security:
- x402: []
- apiKey: []
requestBody:
required: true
content:
application/json:
schema:
type: object
additionalProperties: false
required:
- entries
properties:
entries:
type: array
minItems: 1
maxItems: 2000
items:
type: object
required:
- path
properties:
path:
type: string
minLength: 1
maxLength: 1024
description: Entry name exactly as stored in the archive.
type:
type: string
enum:
- file
- dir
- symlink
- hardlink
description: 'Default: dir when the name ends with /, else file.'
linkTarget:
type: string
maxLength: 1024
description: Required for symlink and hardlink entries.
size:
type: integer
minimum: 0
maximum: 9007199254740991
description: Uncompressed size in bytes.
compressedSize:
type: integer
minimum: 0
maximum: 9007199254740991
description: At most 200000 characters of paths and link targets in total.
targets:
type: array
maxItems: 3
items:
type: string
enum:
- windows
- macos
- linux
description: 'Filesystems to check collisions and name rules for. Default: windows, macos and linux.'
destinationRoot:
type: string
maxLength: 1024
description: Extraction directory; counted towards total path length.
limits:
type: object
properties:
maxEntries:
type: integer
minimum: 0
maxTotalBytes:
type: integer
minimum: 0
maximum: 9007199254740991
maxExpansionRatio:
type: number
minimum: 0
example:
entries:
- path: app/
type: dir
- path: app/run.sh
type: file
size: 120
- path: app/Run.sh
type: file
size: 90
- path: app/link
type: symlink
linkTarget: ../../etc
- path: app/link/passwd
type: file
size: 5
- path: ..\..\evil.dll
type: file
size: 1
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.'
checked:
type: integer
targets:
type: array
items:
type: string
findings:
type: array
description: Capped at 100. Errors make the status fail; warnings do not.
items:
type: object
properties:
rule:
type: string
severity:
type: string
index:
type: integer
path:
type: string
target:
type: string
detail:
type: string
findingCount:
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:
- Archive Preflight
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