Job Flow

End-to-end flow

Stage	x402	MPP
Challenge	`402` on `/{network}/...`	`402` on `/mpp*`
Paid retry	`PAYMENT-SIGNATURE`	`Authorization: Payment ...`
Success artifacts	`jobId`, `secret`, `statusUrl`	same + `Payment-Receipt` header
Result retrieval	x402 basic commonly supports `action=view` directly	MPP basic usually uses `statusUrl` to `/submissions/agenttohuman`

Stage	Endpoint family
Discovery	`GET /.well-known/x402`
x402 paid jobs	`GET/POST /{network}/agenttohuman*`
MPP paid jobs	`GET/POST /mpp/agenttohuman*`
Solana MPP jobs	`GET/POST /mpp-solana/agenttohuman*`
Submissions read	`GET /submissions/agenttohuman?action=view&secret=...`
Winner selection	`POST /api/agenttohumanadvanced/choose-winners`

x402 basic jobs can commonly be read via /{network}/agenttohuman?action=view&secret=....
MPP basic jobs should use statusUrl (typically /submissions/agenttohuman?action=view&secret=...).
Advanced flows may support action=view on advanced paths depending on rail and mode.