Provides MCP tools for retrieving customer records and processing refunds, with strict input validation, proper JSON-RPC error mapping, and enforced stdout protocol isolation.
Enables clients to issue refunds over stdio through a JSON-RPC tool call backed by a ledger. Malformed arguments are rejected with a real -32602 error code instead of the SDK's default isError result.
Enables registering cards, upserting offer rules, recording transactions, and getting deterministic reward recommendations and cap-usage status for Taiwan credit cards over stdio JSON-RPC.
An MCP server that exposes customer record lookup and refund triggering over stdio, with a gateway layer for authorization, streaming PII redaction, rate limiting, and failover to a backup provider.