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OpenAPI Specification

openapi: 3.2.0
info:
  title: DAP Foundry Diff Two Line Lists API
  version: 1.0.0
  summary: Small single purpose tools for agents, as JSON.
  description: Priced tools cost what each operation's x-payment-info states, in USDC on Base under x402 version 2, for each computed answer. A refusal is not charged. Inputs are not stored. We do not issue rulings.
  termsOfService: https://dap.solutions/terms/api/
servers:
- url: https://foundry.dap.solutions
security:
- {}
tags:
- name: Diff Two Line Lists
paths:
  /api/diff-two-line-lists:
    post:
      operationId: diff-two-line-lists
      summary: Diff two line lists
      description: Use when you need to compare two lists of lines. Marks each distinct line only_a, only_b or both, matched exactly as sent, as a CSV. $0.01 USDC on Base per answer via x402; a refusal is free.
      x-payment-info:
        protocols:
        - x402
        price:
          mode: fixed
          currency: USD
          amount: '0.01'
      requestBody:
        required: true
        content:
          application/json:
            schema:
              type: object
              additionalProperties: false
              required:
              - text
              properties:
                text:
                  type: string
                  description: 'Two lists of lines: a line ---A---, then list A, then a line ---B---, then list B, one item per line. At most 1,048,576 bytes of UTF-8 and 50,000 lines; a line break at the very end is not a line.'
      responses:
        '200':
          description: Computed. The JSON envelope the tool's hub.md describes.
        '402':
          description: Payment required. The x402 v2 price is in the PAYMENT-REQUIRED header.
        '422':
          description: The tool refused the call. Never charged.
      tags:
      - Diff Two Line Lists
externalDocs:
  description: Every parameter and refusal code
  url: https://foundry.dap.solutions/hub.md