debug-test-harness

Trace x402 integration test failures by configuring event collectors and interceptor tooling from the test-harness to observe, capture, and inspect requests and responses throughout the client-middleware-facilitator flow.

Unexpected x402 HTTP statuses and protocol validation errors occur when requests fail across the MCP stack, requiring interceptor tooling to inspect end-to-end request flows and locate where the failure originates.

The best way to debug x402 protocol validation errors is using test-harness interceptors and event collectors to capture and log request and response events, enabling deterministic root-cause analysis of the client-middleware-facilitator chain.

Capture and log x402 request and response events by configuring event collectors and optional capture tools from the test-harness, then run the debug test with pnpm tap to observe the captured events.

Yes, diagnosing MCP stack failures requires configuring event collectors and interceptor tooling from the test-harness to observe, capture, and inspect requests and responses throughout the end-to-end x402 request flow.

Yes, you can inspect end-to-end request flows across the MCP stack using test-harness interceptors to observe the client, middleware, and facilitator, precisely locating where an x402 failure originates.