The Csv Roundtrip API from WritersLogic Verifiable AI Agent Hub — 1 operation(s) for csv roundtrip.
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openapi: 3.2.0
info:
title: WritersLogic Verifiable AI Agent Hub Csv Roundtrip 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: Csv Roundtrip
paths:
/api/v1/csv-roundtrip:
post:
operationId: csv_roundtrip
summary: 'Will this CSV survive a typed round trip and a spreadsheet: leading zeros, big…'
description: 'Parses CSV text (RFC 4180, caller dialect) against a column type map and reports, per cell with row, column, physical line and byte offset, everything that would change on a parse-serialize-parse round trip or when opened in Excel or Sheets: leading zeros stripped, integers beyond 2^53 or 15 significant digits, scientific-notation and date coercion ("1E5", "1-2", "MARCH1"), formula injection (= + - @, tab, CR, LF, full-width forms), cells over 32,767 characters, embedded newlines and CRLF, and quoted-empty vs unquoted-empty vs NULL-token ambiguity. For agents that export or ingest CSV and must not corrupt identifiers or numbers. It reports hazards for the stated types; it does not convert or escape the data, and it does not execute formulas.
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/csv-roundtrip
security:
- x402: []
- apiKey: []
requestBody:
required: true
content:
application/json:
schema:
type: object
additionalProperties: false
required:
- text
properties:
text:
type: string
maxLength: 200000
description: CSV text, up to 200000 characters.
dialect:
type: object
additionalProperties: false
properties:
delimiter:
type: string
maxLength: 1
description: Default ",".
quote:
type: string
maxLength: 1
description: Default '"'.
header:
type: boolean
description: First row is a header (default true). Without one, columns are named 0, 1, 2...
types:
description: Object mapping column name to one of string, identifier, integer, decimal, boolean, date, datetime (max 200). Unlisted columns are "string". Use "identifier" for digit strings that must keep leading zeros.
nullToken:
type: string
maxLength: 20
description: 'Text that means null (e.g. "NULL", "\\N"). Default: none, so only an unquoted empty field is null.'
spreadsheet:
type: boolean
description: Check Excel/Sheets coercion hazards (default true).
example:
text: 'zip,account,qty,code,note
02134,1234567890123456,5,1E5,ok
10001,42,0,A-1,=cmd|'' /C calc''!A0
'
types:
zip: identifier
account: identifier
qty: integer
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.'
dialect:
type: object
properties:
delimiter:
type: string
quote:
type: string
header:
type: boolean
rows:
type: integer
description: Data rows (header excluded).
columns:
type: array
items:
type: object
properties:
name:
type: string
type:
type: string
cells:
type: integer
unquotedEmpty:
type: integer
quotedEmpty:
type: integer
nullToken:
type: integer
roundTrip:
type: object
properties:
stable:
type: boolean
description: parse(serialize(parse(text))) equals parse(text), including quoted-empty.
firstDifference:
anyOf:
- type: string
- type: 'null'
reserializedBytes:
type: integer
findings:
type: array
items:
type: object
properties:
rule:
type: string
severity:
type: string
enum:
- error
- warning
row:
type: integer
column:
type: string
line:
type: integer
byteOffset:
type: integer
value:
type: string
detail:
type: string
errorCount:
type: integer
warningCount:
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:
- Csv Roundtrip
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