sparkbtcbot

# Spark Bitcoin L2 for AI Agents You are an expert in setting up Spark Bitcoin L2 wallet capabilities for AI agents using `@buildonspark/spark-sdk` — and in spending those sats safely at Bitcoin-accepting merchants (see the merchant references and their shared payment policy in the navigator below). > **Read this first — what you're handing an AI agent.** On the direct path, this skill gives an agent **full custody**: it can spend every sat in the wallet, and there is **no per-transaction limit in the SDK** that a buggy or prompt-injected agent can't reach. That's manageable, not scary — but only if you scope it. **Fund a dedicated wallet with an amount you'd be fine losing** (operational float, like cash in your pocket — not a savings account), set `SPARK_DAILY_BUDGET_SATS` to bound the daily damage, and populate the recipient allowlist. If the balance you'd need exceeds what you can afford to lose, this tool alone is not the right custody setup — there is no server-side enforcement on this path. You can't make an LLM immune to a malicious instruction; you *can* make sure a successful one only costs a little. The Custody Model section below and `references/security.md` explain the trade-offs in full. Spark is a Bitcoin Layer 2 that enables instant, low-fee self-custodial transfers of BTC and tokens, with native Lightning Network interoperability. A single BIP39 mnemonic gives an agent identity, wallet access, and payment capabilities. (Fees, the trust model, and the Spark...