# logitech-ipc-protocol: reconstructing Logi Options+ agent messages

> logitech-ipc-protocol reconstructs the Logi Options+ agent's local IPC messages for querying devices and changing their active host. Its notes specify binary framing, JSON request paths and protobuf payload types across macOS sockets and Windows named pipes. The repository includes client scripts and records a Windows 2.7 change that routes access through the app's renderer relay.

- Type: Case study
- Targets: App · Protocol
- Category: Independent reconstruction cases
- Relationship: Independent reconstruction project
- Sources reviewed: 2026-11-06
- Added to the catalog: 2026-11-09
- Original resource: <https://github.com/saimanish1/logitech-ipc-protocol>
- Primary source: <https://github.com/saimanish1/logitech-ipc-protocol/blob/44a99567005bef40f5841b83f2a9fb42fbb83e52/README.md>
- Catalog page: <https://awesomerea.org/resources/logitech-ipc-protocol-case/>
- Record JSON: <https://awesomerea.org/resources/logitech-ipc-protocol-case/record.json>
- Chinese version: [简体中文](https://awesomerea.org/zh/resources/logitech-ipc-protocol-case/index.md)

## Requirements & limits

- **Prerequisites:** Logi Options+ and compatible Logitech multi-host devices are required.
- **Prerequisites:** The macOS switching script requires m1ddc.
- **Limits:** Windows Options+ 2.7+ requires the documented UI relay setup; direct named-pipe clients are blocked.
- **License:** MIT license.

## Primary sources

1. <https://github.com/saimanish1/logitech-ipc-protocol/blob/44a99567005bef40f5841b83f2a9fb42fbb83e52/README.md>
2. <https://github.com/saimanish1/logitech-ipc-protocol/blob/44a99567005bef40f5841b83f2a9fb42fbb83e52/logi-options-ipc-reverse-engineering.md>
3. <https://github.com/saimanish1/logitech-ipc-protocol/blob/44a99567005bef40f5841b83f2a9fb42fbb83e52/api-reference.md>

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## About this entry

The description was reviewed against primary sources.
Original editorial content: MIT. Linked projects, papers and assets retain their own rights and licenses.