Checkpoint402 API enhancements (API Evangelist)

overlay: 1.0.0
info:
  title: Checkpoint402 API enhancements (API Evangelist)
  version: 1.0.0
  x-provenance:
    generated: '2026-11-03'
    method: derived
    source: https://checkpoint402.com/docs; mcp/checkpoint402-com-tool-crosswalk.yml
extends: ../openapi/_original/checkpoint402-com-openapi.yml
actions:
- target: $.paths['/v1/tx-explain'].get
  description: Link txExplainer to its MCP tool and describe the x402 handshake
  update:
    x-mcp-tool:
      server: https://api.checkpoint402.com/mcp
      name: explain_transaction
    responses:
      '402':
        description: Payment Required. The unpaid request is answered with a PAYMENT-REQUIRED header stating the exact price, network and receiving
          wallet; repeat the call with a signed USDC transfer authorization in a PAYMENT-SIGNATURE header. Failed requests are not charged (https://checkpoint402.com/docs).
- target: $.paths['/v1/defi-yields'].get
  description: Link defiYields to its MCP tool and describe the x402 handshake
  update:
    x-mcp-tool:
      server: https://api.checkpoint402.com/mcp
      name: find_defi_yields
    responses:
      '402':
        description: Payment Required. The unpaid request is answered with a PAYMENT-REQUIRED header stating the exact price, network and receiving
          wallet; repeat the call with a signed USDC transfer authorization in a PAYMENT-SIGNATURE header. Failed requests are not charged (https://checkpoint402.com/docs).
- target: $.paths['/v1/new-tokens'].get
  description: Link newTokens to its MCP tool and describe the x402 handshake
  update:
    x-mcp-tool:
      server: https://api.checkpoint402.com/mcp
      name: new_token_safety_feed
    responses:
      '402':
        description: Payment Required. The unpaid request is answered with a PAYMENT-REQUIRED header stating the exact price, network and receiving
          wallet; repeat the call with a signed USDC transfer authorization in a PAYMENT-SIGNATURE header. Failed requests are not charged (https://checkpoint402.com/docs).
- target: $.paths['/v1/token-check'].get
  description: Link tokenCheck to its MCP tool and describe the x402 handshake
  update:
    x-mcp-tool:
      server: https://api.checkpoint402.com/mcp
      name: token_safety_check
    responses:
      '402':
        description: Payment Required. The unpaid request is answered with a PAYMENT-REQUIRED header stating the exact price, network and receiving
          wallet; repeat the call with a signed USDC transfer authorization in a PAYMENT-SIGNATURE header. Failed requests are not charged (https://checkpoint402.com/docs).
- target: $.paths['/v1/company-events'].get
  description: Link sec8k to its MCP tool and describe the x402 handshake
  update:
    x-mcp-tool:
      server: https://api.checkpoint402.com/mcp
      name: sec_8k_company_events
    responses:
      '402':
        description: Payment Required. The unpaid request is answered with a PAYMENT-REQUIRED header stating the exact price, network and receiving
          wallet; repeat the call with a signed USDC transfer authorization in a PAYMENT-SIGNATURE header. Failed requests are not charged (https://checkpoint402.com/docs).
- target: $.paths['/v1/sanctions-screen'].get
  description: Link ofacScreen to its MCP tool and describe the x402 handshake
  update:
    x-mcp-tool:
      server: https://api.checkpoint402.com/mcp
      name: ofac_sanctions_screen
    responses:
      '402':
        description: Payment Required. The unpaid request is answered with a PAYMENT-REQUIRED header stating the exact price, network and receiving
          wallet; repeat the call with a signed USDC transfer authorization in a PAYMENT-SIGNATURE header. Failed requests are not charged (https://checkpoint402.com/docs).