Xobni.ai Email Skill

Give AI agents real email addresses with full inbox functionality.

Quick Start

Create agent at xobni.ai/agents/new → gets email like [email protected]
Create API key at xobni.ai/settings/api-keys scoped to your agent
Connect via REST API or MCP

API Key Scoping

Each API key is scoped to a single agent. The key can only access that agent's emails, threads, attachments, and webhooks. No need to pass account_id or agent_id — they're auto-resolved from your key.

What scoped keys can do: - Read, send, search, and manage emails - Create and manage webhooks - View agent info and storage usage

What scoped keys cannot do: - Access other agents' data (returns 403) - Create or delete agents - Manage API keys or billing

MCP Connection

URL: https://api.xobni.ai/mcp/
Transport: Streamable HTTP
Auth: Authorization: Bearer YOUR_API_KEY

Claude Desktop Config

{
  "mcpServers": {
    "xobni": {
      "url": "https://api.xobni.ai/mcp/",
      "headers": {
        "Authorization": "Bearer YOUR_API_KEY"
      }
    }
  }
}

Core Operations

Read Inbox

curl -H "Authorization: Bearer $XOBNI_KEY" 
  "https://api.xobni.ai/api/v1/emails?status=received&limit=20"

Send Email

curl -X POST -H "Authorization: Bearer $XOBNI_KEY" 
  -H "Content-Type: application/json" 
  "https://api.xobni.ai/api/v1/emails/send" 
  -d '{"to":["[email protected]"],"subject":"Hello","body_text":"Message here"}'

Send with Attachments

curl -X POST -H "Authorization: Bearer $XOBNI_KEY" 
  -H "Content-Type: application/json" 
  "https://api.xobni.ai/api/v1/emails/send" 
  -d '{
    "to":["[email protected]"],
    "subject":"Report",
    "body_text":"See attached.",
    "attachments":[{"filename":"report.pdf","data":"<base64>","content_type":"application/pdf"}]
  }'

Search (Semantic)

curl -X POST -H "Authorization: Bearer $XOBNI_KEY" 
  -H "Content-Type: application/json" 
  "https://api.xobni.ai/api/v1/search" 
  -d '{"query":"invoices from last month","limit":10}'

Get Agent Info

curl -H "Authorization: Bearer $XOBNI_KEY" 
  "https://api.xobni.ai/api/v1/agents"

Check Storage Usage

curl -H "Authorization: Bearer $XOBNI_KEY" 
  "https://api.xobni.ai/api/v1/emails/storage-usage"

MCP Tools (14 total)

Tool	Purpose
`get_agent_info`	Get agent's name, email, slug, status
`read_inbox`	List emails with filters (status, limit, offset)
`read_email`	Get full email content by ID
`send_email`	Send with optional attachments and reply threading
`get_thread`	Get all emails in a conversation
`list_attachments`	List attachments for an email
`download_attachment`	Get pre-signed download URL (15 min)
`get_attachment_text`	Extract text from PDF/DOCX/XLSX/PPTX
`mark_email`	Update status: read/unread/starred/unstarred/archived
`search_emails`	Semantic search across emails + attachments
`list_webhooks`	List configured webhooks
`create_webhook`	Create webhook for email.received/email.sent
`delete_webhook`	Remove a webhook
`list_webhook_deliveries`	View webhook delivery history

Webhooks

Set up real-time notifications when emails arrive or are sent:

curl -X POST -H "Authorization: Bearer $XOBNI_KEY" 
  -H "Content-Type: application/json" 
  "https://api.xobni.ai/api/v1/event-hooks" 
  -d '{
    "url": "https://your-endpoint.com/webhook",
    "events": ["email.received"],
    "description": "Email notifications"
  }'

Supported events: email.received, email.sent. Payloads include email metadata and a 200-character snippet. Use read_email to fetch full content.

API Reference

See references/api.md for full endpoint documentation.

Key Concepts

Agent-scoped keys: Each key works with one agent only. Auto-resolves IDs.
Semantic search: Natural language queries across email bodies AND attachments (PDF, DOCX, etc.)
Attachments: Send files via base64 (max 10 files, 10MB total)
Webhooks: Real-time notifications for email events via n8n, Zapier, Make, or any HTTP endpoint.