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OpenAPI Specification

openapi: 3.2.0
info:
  title: FetchDelta Meta API
  version: 0.1.0
  summary: Paid page freshness API for agents that monitor docs, release notes, pricing, and policy pages
  description: FetchDelta is a paid HTTP API for autonomous agents. It resolves public webpages into clean markdown and computes diffs against prior snapshots. Protected endpoints return HTTP 402 until paid over x402.
  contact:
    name: FetchDelta support
    url: https://github.com/henrihallik/fetchdelta-client/issues
servers:
- url: https://fetchdelta.com
tags:
- name: Meta
  description: Free capability and health endpoints
paths:
  /health:
    get:
      tags:
      - Meta
      summary: Health check
      operationId: health
      responses:
        '200':
          description: Service is healthy
  /manifest:
    get:
      tags:
      - Meta
      summary: Machine-readable service manifest
      operationId: manifest
      responses:
        '200':
          description: Service manifest
  /.well-known/agent-card.json:
    get:
      tags:
      - Meta
      summary: Machine-readable agent/service card with skills and endpoint examples
      operationId: agentCard
      responses:
        '200':
          description: Agent card
  /api/resolve/preview:
    description: Free public preview for deciding whether a full paid resolve or diff is worth calling. This route does not require x402 payment.
    get:
      tags:
      - Meta
      summary: Fetch a public page preview with title, excerpt, headings, links, and a…
      operationId: previewResolvePage
      parameters:
      - name: url
        in: query
        required: true
        description: Absolute URL of a public HTTP(S) page to fetch. Use docs, release notes, pricing pages, policy pages, or other public