API Reference

Web Interface

The interactive web UI is available at GET /. Enter any entity name to begin an investigation.

Chat (SSE Stream)

POST /chat
Content-Type: application/json

{
  "message": "Acme Holdings Ltd",
  "mode": "full",
  "jurisdiction": "UK"
}

Returns a Server-Sent Events stream with the following event types:

• think_start — Investigation beginning
• reasoning — Analyst's internal reasoning text
• tool_call — Structured tool invocation
• tool_result — Tool response summary
• think_end — Reasoning phase complete
• answer_text — Final markdown report
• done — Investigation complete (with token/TPS stats)

x402 Paid API

Programmatic access is available via the Etch Labs x402 node surface:

• POST /screen — Quick screen (sanctions + PEP)
• POST /investigate — Full due diligence report
• GET /health — Node health check

All paid endpoints require a valid x402 payment header. See the Etch Labs documentation for gateway details.