API & MCP

REST

GET https://diligence.dropwatchhq.com/api/scan?name=Acme%20Co&state=CA      # free quick scan (counts + verdict)
GET https://diligence.dropwatchhq.com/api/brief?name=Acme%20Co&state=CA     # full brief (402 paywall / x402)
GET https://diligence.dropwatchhq.com/api/recall?name=Acme%20Co             # free CPSC recall-exposure check

MCP (streamable-http)

POST https://diligence.dropwatchhq.com/mcp
{"jsonrpc":"2.0","id":1,"method":"tools/call",
 "params":{"name":"diligence_brief","arguments":{"name":"Acme Co","state":"CA"}}}

Tools: diligence_brief (premium, x402 $0.50 USDC/Base), quick_scan (free), check_recall_exposure (free). Discovery: /.well-known/x402, /llms.txt.

x402 pay-per-call

Call diligence_brief with no payment → you get a free quick_scan preview + an x402 challenge. Sign an EIP-3009 USDC transfer for the quoted amount to payTo and resend with an X-PAYMENT header to unlock the full brief. Keyless mainnet settlement via the PayAI facilitator.