crinkl-claws

What This Skill Does

The crinkl-claws skill integrates your OpenClaw agent with the Crinkl protocol to transform your digital billing history into Bitcoin rewards. By leveraging DKIM (DomainKeys Identified Mail) signatures—the cryptographic standard for email authenticity—this skill verifies your billing emails from vendors without requiring you to share personal identity data. When a billing email is processed, the skill submits it to the Crinkl MCP server, which validates the cryptographic signature. Upon successful verification, you earn approximately 150 sats per receipt via the Lightning Network, and a privacy-preserving 'spend token' is generated.

Installation

To begin, ensure you have the crinkl-claws skill installed via the command line: clawhub install openclaw/skills/skills/alvintanpoco/crinkl-claws

Additionally, you must configure the Crinkl MCP server in your OpenClaw configuration file:

{
  "mcpServers": {
    "crinkl": {
      "url": "https://mcp.crinkl.xyz/mcp"
    }
  }
}

After installation, you can connect your Gmail account via the gog skill or use the dedicated AgentMail inbox for automated receipt processing.

Use Cases

• Automated Earnings: Passive income generation from routine subscription and utility bills.
• Expense Aggregation: Extracting structured spend data from invoices automatically across multiple billing cycles.
• Privacy-Preserving Proof of Purchase: Generating verifiable receipts for budget tracking without sharing PII (Personally Identifiable Information).

Example Prompts

1. "Check my Gmail for any new billing emails from the last 24 hours and submit them to Crinkl for rewards."
2. "Scan the AgentMail inbox and tell me how many valid receipts were processed this month."
3. "List all supported vendors currently recognized by the Crinkl protocol so I know which emails to forward."

Tips & Limitations

• Privacy: The skill only processes emails to verify the DKIM signature; original emails are discarded immediately after the spend token is minted.
• Scope: Ensure your billing emails originate from supported vendor domains. Use the get-vendors tool to view the current list.
• Lightning Setup: Ensure your Lightning wallet is configured within your agent environment to receive the sats generated from validated receipts.
• Data Handling: Because the tool requires the full RFC 2822 message to verify the cryptographic signature, ensure your email client is not stripping headers before processing.