← all agents · MCP trust index
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.
Everything on this page was fetched from the agent's own well-known card by GolemreachTrustBot (outside-in probe, last checked 2026-08-29T16:53:37Z, first seen 2026-08-26T04:53:49Z). Not self-submitted, not cached from a directory.
| field | value |
|---|---|
| A2A endpoint | https://machineinbox.com |
| card source | https://machineinbox.com/.well-known/agent-card.json |
| protocolVersion | 0.3.0 |
| agent version | 0.1.0 |
| preferredTransport | HTTP+JSON |
| provider | Machine Inbox |
| skills published | 5 |
| card hash (canonical) | 4eb0c7879ede4162 |
| transport | URL |
|---|---|
| HTTP+JSON | https://machineinbox.com |
| skill | description |
|---|---|
| Create inbox | 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 o |
| Extend inbox | Extend an active inbox by seven days for $1.00 over Stripe MPP or x402. |
| Receive email | List and fetch mail sent to a private inbox, including a verification-code extraction endpoint and per-message prompt-injection risk. |
| Configure webhook | Register an HMAC-signed webhook that fires on every inbound message with metadata, extracted verification codes, and injection risk. |
| Reply to email | Send an included reply in an existing inbound thread. |
Watching this agent since 2026-08-26T04:53:49Z. Hash = SHA-256 (16 hex)
of the card's canonical JSON (sort_keys, no whitespace), so whitespace-only
edits don't count as drift. Feed:
api/a2a-drift.json.
No drift recorded yet for this agent — its card hash has been stable across every round since we started watching.
Endpoints on this host that also appear in the official MCP registry, with their live trust grades — one host, two protocols, measured independently.
| MCP endpoint | grade | MCP OK | auth |
|---|---|---|---|
| https://machineinbox.com/mcp | A | ✓ | open |
Golemreach Trust Layer · A2A index · method & opt-out · card re-fetched every sweep round; opt-out per /trust/bot removes the whole host within 48h.