Lightning Labs, the company that makes the core software for the Lightning Network including Lnd, Loop, and Taproot Assets, has released an alpha version of Wavelength. The toolkit enables developers and AI agents to add self-hosted Bitcoin payments to their systems by using an API that is not limited to storage, without using nodes, managing channels, or earning money to buy assets.
In a blog post dated July 21, 2026, Lightning Labs described Wavelength as “Bitcoin in Easy Mode for Agents and People.” The company said that the Lightning Network already brings fast, global, low-cost payments under the control of users, but the infrastructure that was previously required most developers chose not to use. Wavelength closes that gap by turning the hard parts of Bitcoin and Lightning integration into a handful of API calls.
Top Level Overview
The length of the installment embeds a self-managed wallet that runs within web or mobile applications (via WebAssembly or integrated binary) or as a standalone client. Users manage their keys on the device. The system supports on-chain Bitcoin, lightning payments through atomic transactions, and a settlement layer like Ark for fast, cost-effective off-chain transfers that can reside in batches on the blockchain. Every off-chain payment uses the standard BOLT 11 invoice, so the wallet is compatible with the existing Lightning Network from the first integration.
Lightning payments go through the Loop for deep, reliable cash. The coordination service settles transfers between users but never takes collective control of funds. According to the announcement, users can always make a joint exit from the on-chain Bitcoin at any time with a clear exit command, without requiring cooperation, Wavelength SDK is open source.
The same Wavelength API is exposed to AI agents as tool calls typed through the Model Context Protocol (MCP). Agents can hold balances and pay for API calls, data feeds, or other agent services for fractions of a cent. Wallet creation and activation designed to stay outside the agent channel so that seeds and passwords are not exposed to the model. This is paired with L402, L402, Lightning Labs’ native authentication protocol and each Lightning payment request.
Key commands cover the full life cycle: create/open, balance, recv (of addresses or invoices), send, transaction, and exit. Integration options include an embedded SDK, gRPC/REST API, WASM browser package, and MCP server. Documentation is provided for both human developers and agents, including llms.txt references and agent onboarding guidance.
Availability and Roadmap
Wavelength is available immediately on Signet and testnet. Mainnet access is invitation only; stakeholders can request it after installing the toolkit. Bitcoin is supported from scratch. Stablecoin support is organized through Taproot Assets so that the same API environment can handle both. Future work includes deep mobile embedding and optional direct lightning channel support using Lnd.
Lightning Labs noted in its announcement that during closed alpha, lightning transactions carry a small service fee of 1 point (plus standard network routing fees), with standard Bitcoin network fees applying for on-chain activity. Price may change.
At X, Lightning Labs summarized the release: “Announcing Wavelength, an easy way to connect bitcoin for agents and people. With a simple non-security API, anyone can integrate Lightning into their application and experience fast, efficient, and low-cost transactions. Machines can pay machines. People can pay people. Anywhere.” A follow-up post directs developers to the mainnet early access form.
The release positions Wavelength as an infrastructure that lowers the barrier for app developers, “vibe coders,” and independent agents to offer Bitcoin payments automatically rather than as an exclusive feature. Complete documentation, quickstarts, and an open source repository are available at wavelength.lightning.engineering and the linked GitHub project.
