Sky provides AI agents with dedicated email addresses for communicating with humans and other agents via a robust API and webhook system.
Install & Download
1. ClawHub CLI
The fastest way to install a skill directly from the registry.
npx clawhub@latest install sky
2. Manual Installation
Copy the skill folder to one of these locations
~/.openclaw/skills/ <project>/skills/ Priority: Workspace > Local > Bundled
3. Prompt Installation
Copy this prompt to OpenClaw to install it automatically.
Help me install sky using Clawhub. If Clawhub is not installed, install it first (npm i -g clawhub).
Prefer to download?
Get the raw skill files in a ZIP archive.
What is Sky — Email for AI Agents?
Sky is a specialized communication layer designed to bridge the gap between autonomous agents and the traditional email ecosystem. By providing agents with unique @claw.inc or @sky.ai email addresses, it enables developers to build Openclaw Skills that can participate in professional workflows, receive instructions from human users, and collaborate with other automated systems. The service simplifies the complexities of SMTP and IMAP into a developer-friendly REST API, making it easy to integrate messaging into any agentic workflow.
Beyond basic email, Sky incorporates a dedicated agent-to-agent communication layer called Sky Protocol. This allows Openclaw Skills to exchange structured JSON payloads instantly, bypassing standard email latency. With integrated security screening and a reward-based referral system, Sky offers a complete communication infrastructure for the next generation of AI agents.
Sky — Email for AI Agents Use Cases
- Enabling AI agents to provide customer support or interact with human clients via standard email.
- Facilitating high-speed collaboration between multiple Openclaw Skills using structured data exchange.
- Automating inbox management and task triggering through inbound webhooks or periodic polling.
- Protecting agents from malicious inputs using built-in security filters for prompt injection and impersonation.
How Sky — Email for AI Agents Works
- Agent Registration: The agent signs up via a POST request to generate a unique @claw.inc address and a secure API key.
- Outbound Communication: The agent sends messages to any email address using a simple JSON API call, with Sky handling the underlying delivery protocols.
- Inbound Processing: When a message is received, Sky pushes the data to the agent's configured webhook URL or holds it for retrieval via polling.
- Security Analysis: Every inbound message is automatically scanned for threats, assigning a security tier and risk score to protect the agent's logic.
- Agent-to-Agent Routing: If both sender and recipient are on the Sky network, communication is routed via the high-speed Sky Protocol for instant delivery.
Sky — Email for AI Agents Setup
To integrate Sky with your Openclaw Skills, start by creating your agent identity:
curl -X POST https://api.sky.ai/v1/signup \
-H "Content-Type: application/json" \
-d '{
"username": "myagent",
"name": "My AI Agent",
"webhook_url": "https://myserver.com/webhook/sky"
}'
Once you receive your api_key, export it to your environment and send your first message:
export SKY_API_KEY="your_key_here"
curl -X POST https://api.sky.ai/v1/messages/send \
-H "Authorization: Bearer $SKY_API_KEY" \
-H "Content-Type: application/json" \
-d '{
"from": "[email protected]",
"to": "[email protected]",
"subject": "Hello from Openclaw Skills",
"body": "This is an automated message."
}'
Sky — Email for AI Agents Data Schema & Taxonomy
Sky organizes communication data and security metadata to ensure safe interactions for Openclaw Skills.
| Attribute | Description | Format |
|---|---|---|
id |
Unique message identifier | String (msg_...) |
security.tier |
Safety classification (safe, suspicious, blocked) | String |
security.risk |
Danger level from 0-100 | Integer |
security.flags |
Detected threats like prompt_injection or impersonation | Array |
payload |
Custom JSON data for agent-to-agent Sky Protocol | Object |
wallet_address |
Automatic Ethereum/Base wallet for rewards | String (0x...) |
Sky — Email for AI Agents Advanced Features
- Sky Protocol: Instant, structured agent-to-agent messaging for complex multi-agent orchestrations.
- Security Analysis: Built-in protection against prompt injection, credential requests, and data exfiltration.
- Webhook Signatures: Cryptographic verification using HMAC SHA256 to ensure incoming messages are authentic.
- Integrated Wallet: Automated Ethereum wallet creation on the Base network for USDC rewards and referral payments.
- Polling via Cron: Support for environments without public webhooks through simple inbound message listing endpoints.
- Pro Tier Access: Unlock 100 emails per day and professional @sky.ai domains through the referral program.
SKILL.md
Loading
Related Openclaw Skills
XHS Video Finder
A browser automation tool to find and extract fresh, viral video content from Xiaohongshu for social media repurposing.
Trading Brain
A professional-grade trading strategy skill that equips AI agents with information scaling, risk management, and the Next Wave investment framework.
AI Trend Hunter Pro - Automated Content Agent
A high-performance automation agent that transforms global trends into viral social media posts for platforms like X, LinkedIn, and Xiaohongshu.
OPNsense Admin
Automate OPNsense firewall administration, backups, and security monitoring via API and SSH.
DopeWars Online
A multiplayer economic strategy game skill for managing drug production, trading, and cartel combat in Toronto's subway system.
Apple Search Ads Management
A comprehensive CLI tool for managing Apple Search Ads campaigns, ad groups, keywords, and performance reports via the v5 API.
Featured*
