Base Payment Assurance

Verify Base Mainnet USDC payments with dual-RPC agreement, safe finality, and exact sender, recipient, and amount matching via 7 MCP tools; 0.11 USDC buys 100 prepaid credits.

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Hosted MCP Server

npx add-mcp 'https://base-payment-assurance-002.qqqa16521-dce.workers.dev/mcp'

Installs into Claude Code, Codex, Cursor and more

Documentation

Base Payment Assurance

Verify Base Mainnet transactions and native Circle USDC payments through MCP. Checks use two independent RPCs and conservative Base safe finality. Exact payment verification matches the expected send…

Quick Start

# Connect this server (installs CLI if needed)
npx -y smithery mcp add qqqa16521/base-payment-assurance

# Browse available tools
npx -y smithery tool list qqqa16521/base-payment-assurance

# Get full schema for a tool
npx -y smithery tool get qqqa16521/base-payment-assurance get_service_info

# Call a tool
npx -y smithery tool call qqqa16521/base-payment-assurance get_service_info '{}'

Direct MCP Connection

Endpoint: https://base-payment-assurance--qqqa16521.run.tools

Optional config:

  • creditAuthorization (header) — Optional. Enter Bearer for paid tools; free info tools need no token.

Tools (7)

  • get_service_info — Free overview of the Base Payment Assurance service. Use this to learn the supported chain/token, dual-RPC quorum, safe…
  • get_payment_info — Free instructions for buying this service's prepaid API credits with direct native Base USDC. Returns the exact receive…
  • get_credit_balance — Check the remaining prepaid credits for the bearer token configured on this MCP connection. This call is free and does …
  • get_safe_head — Return the conservative Base Mainnet safe head after consulting both configured public RPCs. If the RPC quorum is unava…
  • get_transaction_status — Check whether a Base Mainnet transaction is not found, confirmed, safe, or failed using two independent RPCs. No paymen…
  • decode_usdc_transfers — Decode all native Circle USDC Transfer logs from a Base transaction only after dual-RPC receipt agreement and safe fina…
  • verify_usdc_payment — Assure that a specific Base transaction contains an exact native Circle USDC Transfer from the expected payer to the ex…
# Get full input/output schema for a tool
npx -y smithery tool get qqqa16521/base-payment-assurance <tool-name>