This release introduces two new major features into Polar.
- Adds a new Model Context Protocol (MCP) server into Polar which allows AI assistants (Claude Code, Codex, Cursor, etc) to perform automated actions within Polar. They now have the ability to create networks, open channels, make payments, mint assets, and many more via 48 MCP tools. You can describe complex network scenarios in plain English and and let the AI set them up. Learn more about the MCP capabilities and how to configure it in the README for @lightningpolar/mcp NPM package. ▶️ View the demo video
- Adds the ability to simulate realistic Lightning payments between the nodes. You can create activity rules by specifying a source, destination, amount, and time interval. Each activity will automate sending payments across the network while the simulation is running. This feature was made possible by integrating sim-ln into Polar.
Features
- Add sim-ln integration to simulate realistic Lightning payments by @Abdulkbk in #1159
- Retain custom block count input for "Manually Mine Blocks" by @Jem256 in #1300
- Add Model Context Protocol (MCP) server for AI assistant integration by @jamaljsr in #1328
Bug Fixes
- Fixed Core Lightning gRPC API not being accessible to host by @Abdulkbk in #1238
- Use correct ports for litd gRPC and REST endpoints by @jcbrand in #1315
- Add arm64 release builds for all platforms by @jamaljsr in #1349
Node Updates
- Add support for LND v0.19.2-beta by @jamaljsr in #1248
- Add support for LND v0.19.3-beta by @jamaljsr in #1325
- Add support for LND v0.20.0-beta by @jamaljsr in #1325
- Add support for Core Lightning v25.09.3 by @jamaljsr in #1325
- Add support for Core Lightning v25.12 by @jamaljsr in #1345
- Add support for Eclair v0.13.1 by @jamaljsr in #1326
- Add support for Taproot Assets v0.6.1-alpha by @jamaljsr in #1248
- Add support for Terminal (litd) v0.15.1-alpha by @jamaljsr in #1248
- Add support for Terminal (litd) v0.15.3-alpha by @jamaljsr in #1325
- Add support for Terminal (litd) v0.16.0-alpha by @jamaljsr in #1330
- Add support for Bitcoin Core v30.0 by @jamaljsr in #1326
New Contributors
- @jcbrand made their first contribution in #1315
Full Changelog: v3.3.0...v4.0.0
