Machine Inbox

com.machineinboxPublished by machineinbox.comOfficial publisherv0.1.0Updated Oct 24, 2026

Task-scoped email inboxes for AI agents: read mail, extract verification codes, and reply.

VerifiedStreamable HTTPWeb executableProductivity & WorkflowCommunication & Collaboration

Overview

AI-generated overview

Lets an assistant create a paid, task-scoped email inbox, read mail, extract verification codes and reply.

What you can do
Provides task-scoped email inboxes for AI agents. It can create and read inboxes, list and fetch messages with parsed text, HTML and attachment download links, extract the newest verification code or confirmation link, and send a plain-text reply to the original sender. It also sets, reads and removes an HMAC-signed webhook and can delete an inbox.
When to use it
Useful for agent flows that need to receive mail to finish signup or login verification, or when you want a disposable, deletable inbox to receive messages and reply to a specific sender.
Requirements
Connects to a remote endpoint; no local package. Creating an inbox requires an out-of-band payment (Stripe MPP or x402 USDC on Base), with the tool returning the payment challenge and instructions. No environment variables or headers are declared.
Before you install
Creating an inbox costs money (standard inbox $2.00). set_webhook returns a signing secret that must be kept safe. reply_to_message sends real email, and delete_inbox revokes the token and erases stored mail; neither can be undone. Message contents and verification codes may be sensitive.

Installation

In SourceWeft

  1. Open Machine Inbox in the dashboard and add it to a workspace.
  2. Enable the server for the chats that should use its tools.

Web executable via Streamable HTTP. Remote servers run from the web runtime once configured in a workspace.

Use with an agent

Paste this prompt into Claude Code, Codex, Cursor or another agent — or into SourceWeft chat. The agent reads this server's install guide, shows you its publisher, endpoint and sign-in, and adds it to your client once you agree. Keys never go into a command.

Read https://sourceweft.com/mcp/com.machineinbox%2Fmachine-inbox/install.md and connect the MCP server it describes to my client. Before changing any config, show me its publisher, endpoint and sign-in method and wait for my OK. Never put an API key in a command or in a file I would commit; ask me where it should come from.

Read the install guide the agent follows

Other MCP clients

Add this to your client's mcpServers config.

{
  "mcpServers": {
    "machine-inbox": {
      "type": "http",
      "url": "https://machineinbox.com/mcp"
    }
  }
}

Tools

11

get_service_info

Read the Machine Inbox service instructions: pricing, payment rails, endpoints, and limits.

Takes no parameters.

create_inbox

Request a new paid inbox. Buying requires an out-of-band payment (Stripe MPP or x402 USDC on Base); this tool returns the live HTTP 402 payment challenge plus exact instructions to complete the purchase. Standard inbox: $2.00.

Parametersidempotency_key

get_inbox

Read an inbox: address, status, expiry, limits, and usage.

Parameterstokeninbox_idrequired

list_messages

List messages in an inbox, newest first. Pass after=<newest createdAt seen> to poll for only new mail.

Parametersafterlimittokenbeforeinbox_idrequired

get_message

Fetch one message with parsed text, HTML, and attachment download URLs.

Parameterstokeninbox_idrequiredmessage_idrequired

get_verification_code

Extract the newest one-time verification code or confirmation link from inbound mail. Ideal for signup and login flows.

Parameterstokensenderinbox_idrequired

reply_to_message

Send an included plain-text reply to the authenticated sender of an inbound message.

Parameterstextrequiredtokeninbox_idrequiredmessage_idrequiredidempotency_keyrequired

set_webhook

Register or replace the inbox webhook: an HMAC-signed POST fires on every inbound message with metadata, extracted verification codes, and injection risk (never the body). Returns the signing secret.

Parametersurlrequiredtokeninbox_idrequired

get_webhook

Read the inbox webhook state: URL, delivery counters, and whether it is disabled. The secret is only returned by set_webhook.

Parameterstokeninbox_idrequired

delete_webhook

Remove the inbox webhook.

Parameterstokeninbox_idrequired

delete_inbox

Delete an inbox: revokes the token and erases stored mail.

Parameterstokeninbox_idrequired

Version history

1
  1. v0.1.0LatestSep 16, 2026

Score

83% of the applicable checks met

How complete this listing is, computed from the registry entry, the endpoint and public sources. Not a rating of the server and not a statement that it is safe or working today: reachability is a dated check, and no installs or reviews go into the score.

  • Reached in the last 30 daysRequired25 pts
  • Auth declaredRequired10 pts
  • Tools listedRequired15 pts
  • DescriptionRequired15 pts
  • Logo10 pts
  • Documentation15 pts

    Declare a GitHub repository with a README, or serve resource_documentation in the OAuth protected-resource metadata.

  • LicenseNot applicable

    A hosted service is used under its provider's terms, so no license is expected here. This check is left out of the percentage.