Woofun AI reports that Lightning Labs has launched Wavelength, a self-custodial Bitcoin payment toolkit built on an Ark-like settlement layer. The platform allows developers, AI agents, and vibe coders to integrate Bitcoin payments via simple API calls, eliminating the need to run nodes, manage channels, or acquire liquidity. Wavelength also supports AI agents accessing Bitcoin payment APIs and data sources through MCP tool calls. The service is currently available in alpha on signet and testnet, with mainnet access restricted to invitations.