@keyid/agent-kit

Give Claude, Cursor, or any MCP client a real email address. Free. No signup.

27 email tools via Model Context Protocol (MCP): send, receive, reply, search inbox, manage contacts, set auto-reply, schedule delivery — everything an AI agent needs to handle email autonomously.

Powered by KeyID.ai — free email infrastructure for AI agents. No human registration, no API keys to manage, no cost.

Install

npm install @keyid/agent-kit
# or
yarn add @keyid/agent-kit

Usage

With Claude Desktop

Add to claude_desktop_config.json:

{
  "mcpServers": {
    "keyid": {
      "command": "npx",
      "args": ["@keyid/agent-kit"],
      "env": {
        "KEYID_PUBLIC_KEY": "...hex...",
        "KEYID_PRIVATE_KEY": "...hex..."
      }
    }
  }
}

With any MCP client

# Run directly
npx @keyid/agent-kit

# Or with existing keypair
KEYID_PUBLIC_KEY=abc123 KEYID_PRIVATE_KEY=def456 npx @keyid/agent-kit

Environment Variables

Variable	Description	Default
`KEYID_BASE_URL`	API base URL	`https://keyid.ai`
`KEYID_PUBLIC_KEY`	Ed25519 public key (hex)	Auto-generated
`KEYID_PRIVATE_KEY`	Ed25519 private key (hex)	Auto-generated

Tools (27)

Identity & Auth

Tool	Description
`keyid_provision`	Register agent, get email address
`keyid_get_email`	Get current active email

Messages

Tool	Description
`keyid_get_inbox`	Fetch inbox (with search, filtering)
`keyid_send`	Send email (scheduled, display name, HTML)
`keyid_reply`	Reply to a message
`keyid_forward`	Forward a message
`keyid_update_message`	Update read/starred status
`keyid_get_unread_count`	Count unread messages

Threads & Drafts

Tool	Description
`keyid_list_threads`	List conversation threads
`keyid_get_thread`	Get thread with messages
`keyid_create_draft`	Create a draft
`keyid_send_draft`	Send a draft

Settings

Tool	Description
`keyid_get_auto_reply`	Get auto-reply settings
`keyid_set_auto_reply`	Configure vacation responder
`keyid_get_signature`	Get email signature
`keyid_set_signature`	Set email signature
`keyid_get_forwarding`	Get forwarding settings
`keyid_set_forwarding`	Configure forwarding

Contacts

Tool	Description
`keyid_list_contacts`	List saved contacts
`keyid_create_contact`	Create a contact
`keyid_delete_contact`	Delete a contact

Webhooks

Tool	Description
`keyid_list_webhooks`	List webhooks
`keyid_create_webhook`	Create webhook
`keyid_get_webhook_deliveries`	Delivery history

Lists & Metrics

Tool	Description
`keyid_manage_list`	Add/remove from allow/blocklist
`keyid_get_metrics`	Query usage metrics

Example Conversation

User: Check my email

Agent: [calls keyid_get_inbox]
You have 3 new messages:
1. alice@company.com — "Q1 Report" (2 hours ago)
2. bob@partner.org — "Meeting tomorrow" (5 hours ago)
3. noreply@service.com — "Password reset" (1 day ago)

User: Reply to Alice saying I'll review it today

Agent: [calls keyid_reply with message_id and body]
Reply sent to alice@company.com.

Protocol

Uses MCP JSON-RPC over stdio (protocol version 2024-11-05). Compatible with Claude Desktop, Cursor, and any MCP client.

License

MIT

KeyID Agent Kit