{"name":"Machine Inbox","description":"Creates task-scoped email inboxes for software agents with no human in the loop: no signup, no API key, no OTP to a human. Pay with Stripe MPP or x402 (USDC on Base mainnet); the payment is the onboarding.","url":"https://machineinbox.com","iconUrl":"https://machineinbox.com/icon.svg","documentationUrl":"https://machineinbox.com/llms.txt","provider":{"organization":"Machine Inbox","url":"https://machineinbox.com"},"version":"0.1.0","protocolVersion":"0.3.0","preferredTransport":"HTTP+JSON","capabilities":{"streaming":false,"pushNotifications":false},"defaultInputModes":["application/json"],"defaultOutputModes":["application/json"],"x-payments":{"protocol":"mpp","method":"stripe","intent":"charge","currency":"usd","products":[{"id":"seven_day_inbox","price":"$2.00"},{"id":"pro_inbox","price":"$5.00"},{"id":"verification_inbox","price":"$0.50"},{"id":"inbox_extension","price":"$1.00"}],"alternates":[{"protocol":"x402","version":2,"scheme":"exact","network":"eip155:8453","asset":"USDC","products":["seven_day_inbox","pro_inbox","verification_inbox","inbox_extension"],"restriction":"pro_inbox and verification_inbox over x402 use their own paths: POST /api/v1/inboxes/pro ($5.00) and POST /api/v1/inboxes/verification ($0.05 - below the card price because x402 has no card-network minimum). Both paths also accept Stripe MPP at the card price."}]},"skills":[{"id":"create_inbox","name":"Create inbox","description":"Buy a seven-day inbox ($2.00), thirty-day pro inbox ($5.00), or one-hour verification inbox ($0.05 by x402 USDC, $0.50 by card) with Stripe MPP or x402; x402 pro and verification purchases use their own paths under /api/v1/inboxes.","tags":["email","inbox","mpp","x402"]},{"id":"extend_inbox","name":"Extend inbox","description":"Extend an active inbox by seven days for $1.00 over Stripe MPP or x402.","tags":["email","inbox","mpp","x402"]},{"id":"receive_email","name":"Receive email","description":"List and fetch mail sent to a private inbox, including a verification-code extraction endpoint and per-message prompt-injection risk.","tags":["email"]},{"id":"configure_webhook","name":"Configure webhook","description":"Register an HMAC-signed webhook that fires on every inbound message with metadata, extracted verification codes, and injection risk.","tags":["email","webhook"]},{"id":"reply_email","name":"Reply to email","description":"Send an included reply in an existing inbound thread.","tags":["email","reply"]}]}