Checkpoint402

Checkpoint402 Blockchain API

The blockchain API from Checkpoint402 — 1 operation(s) for blockchain.

Documentation GitHub OpenAPI

Operations 1

GET /v1/tx-explain Transaction Explainer #

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OpenAPI Specification

openapi: 3.2.0
info:
  title: Checkpoint402 Com Blockchain API
  version: 1.0.0
  termsOfService: https://checkpoint402.com/terms
  x-guidance: Each endpoint is GET with query parameters and returns JSON. Pay per call with x402 (USDC on Base). Errors (4xx/5xx) are not charged.
  description: 'Operations tagged blockchain across 2 of this provider''s published API definitions: checkpoint402-com-openapi.json, checkpoint402-com-openapi.yml. Each path carries the servers of the definition it was published in.'
servers:
- url: https://api.checkpoint402.com
  description: Production (base URL stated at https://checkpoint402.com/docs)
tags:
- name: Blockchain
paths:
  /v1/tx-explain:
    get:
      operationId: txExplainer
      summary: Transaction Explainer
      description: 'Explains any Base or Ethereum transaction in plain English: who sent what to whom, which tokens/NFTs moved, the function called, success/failure and fee — plus the structured decoded data.'
      tags:
      - Blockchain
      parameters:
      - name: hash
        in: query
        required: true
        description: Transaction hash (0x + 64 hex chars)
        schema:
          type: string
      - name: chain
        in: query
        required: false
        description: Chain (default base)
        schema:
          type: string
          enum:
          - base
          - ethereum
      x-payment-info:
        price:
          mode: fixed
          currency: USD
          amount: '0.030000'
        protocols:
        - x402: {}
      responses:
        '200':
          description: Result
          content:
            application/json:
              schema:
                type: object
        '400':
          description: Invalid input (not charged)
        '402':
          description: Payment Required
        '502':
          description: Upstream data source unavailable (not charged)
x-refined-from:
- checkpoint402-com-openapi.json
- checkpoint402-com-openapi.yml