AI Agent Skill: Self-Custodial Bitcoin Wallet on Spark L2

AI Agent Skill: Self-Custodial Bitcoin Wallet on Spark L2

This AI agent skill equips an AI coding agent with a self-custodial Bitcoin wallet on the Spark Layer 2 (L2) network. It supports the initialization of wallets from BIP39 mnemonics, facilitates zero-fee transactions using Spark, BTKN, and LRC20 tokens, and handles the creation and payment of Lightning and Spark native invoices. The skill also enables L402 paywall payments, manages Layer 1 deposits, cooperative withdrawals, and message signing. It automatically kicks in whenever users engage in tasks related to Bitcoin or financial transactions involving Spark, BTKN, BTC L2, or L402.

What this skill does

• Initializes a self-custodial Bitcoin wallet using BIP39 mnemonics.
• Facilitates zero-fee Spark and BTKN/LRC20 token transfers.
• Manages creation and payment of Lightning invoices and Spark native invoices.
• Processes L402 paywall payments.
• Handles Layer 1 deposits and cooperative withdrawals.
• Supports message signing for transaction verification.

Who it is for

This skill is intended for developers and teams utilizing AI coding agents like Claude Code, Cursor, and Codex, who require autonomous Bitcoin transactions on the Spark network.

Use cases

• Developing an agent that autonomously sends or receives Bitcoin.
• Setting up a non-custodial wallet for an AI model to conduct transactions.
• Enabling an AI agent to purchase real-world goods or services with Bitcoin, such as eSIMs, gift cards, VPNs, and burner numbers via platforms like Bitrefill, nadanada, or Cryptorefills.
• Integrating paywall solutions using L402 standards for accessing API services from code.

Technical details

• Utilizes the `@buildonspark/spark-sdk` for implementing wallet capabilities.
• Supports transaction and invoice management using Spark L2.
• Compatible with various digital assets, including Spark, BTKN, and LRC20 tokens.
• Allows for seamless integration within AI workflows for Bitcoin-related transactions.

This skill provides general workflow assistance and should not be construed as financial, legal, tax, or accounting advice.

Source & Licence

This package is built on open-source work published by echennells (echennells/sparkbtcbot) and distributed under MIT. The original licence text and copyright notice are included in your download.

Personal and commercial use, modification and redistribution are permitted, provided the original copyright and licence notice are retained.

Your purchase covers curation, licence verification, packaging, documentation and instant delivery. It does not grant exclusive rights to the underlying open-source code, which remains available under its original licence.

Delivery & Support

• Delivery: instant — a secure download link is emailed to you as soon as payment is confirmed.
• Format: ZIP archive containing the skill files, documentation and the original licence.
• Support: support@mcpcart.com — we aim to reply within 2 business days.
• Updates: updates are included only where stated on this page.

Refunds

This is a digital product delivered immediately after purchase. By completing your order you request immediate delivery and acknowledge that, once the download has been accessed, the statutory right to cancel no longer applies to the extent permitted by law. Refund requests are handled in accordance with our published Refund Policy.

Claude, Codex, Gemini and Cursor are trademarks of their respective owners. MCP Cart is an independent marketplace and is not affiliated with, endorsed by, or sponsored by any of them. Compatibility references describe interoperability only.