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Directory

Frameworks & Skills

Lightning Agent Tools

Lightning Labs' 7 open-source agent skills + MCP server to run a node, pay L402 APIs and host paid endpoints
Clients

lnget

L402-aware wget/curl-style CLI that auto-pays Lightning invoices on HTTP 402
Seller Tools

Aperture

L402 reverse proxy that gates any API behind Lightning payments
Protocols

L402 Protocol Spec

Specification for HTTP 402 Lightning payment authentication with macaroons
Frameworks & Skills

LangChainBitcoin

LangChain tools letting agents hold sats and pay L402 APIs
MCP Servers

Alby MCP Server

MCP server connecting an agent to a Lightning wallet via Nostr Wallet Connect
Protocols

Nostr Wallet Connect (NWC)

Open protocol for apps and agents to control a remote Lightning wallet with scoped permissions
SDKs

Alby JS SDK

JavaScript SDK for NWC wallet payments from apps and agents
SDKs

Breez SDK

Self-custodial Lightning SDK for embedding payments in apps and agents
Wallets & Nodes

LNbits

Open-source Lightning accounts system with API keys and extensions
Wallets & Nodes

Voltage

Hosted Lightning node infrastructure
Payment APIs

Strike API

API for sending and receiving Bitcoin/Lightning payments
Protocols

Cashu

Chaumian ecash protocol on Bitcoin/Lightning used for private agent micropayments
Paid AI APIs

Routstr

Decentralized AI inference router: access top AI models with Bitcoin Lightning payments, permissionless and private
Paid AI APIs

PPQ.ai

PayPerQ: pay-per-prompt access to hundreds of AI models with no subscription or registration; featured as a Bitcoin Lightning app
Directories

402 Index

Index of paid L402/x402 API endpoints with health checks and MCP search
Directories

Satring

Curated directory of L402/x402 paid APIs for AI agents
Marketplaces

HAL Market

Marketplace where agents buy pay-per-call services via L402; sellers keep 95%