Mos

Mos is a free, open-source macOS menu bar utility that makes mouse wheel scrolling smooth while preserving mouse precision.

What Mos does

Mos intercepts mouse wheel events and turns raw deltas into smoother, more predictable motion. It supports per-app profiles, independent vertical and horizontal axis settings, scroll direction control, scroll hotkeys, mouse button bindings, and Logitech HID++ button handling.

Mos is designed for macOS 10.13 or later.

Install

Download the latest release from GitHub:

https://github.com/Caldis/Mos/releases/latest

Install with Homebrew:

brew install --cask mos

Main links

• Homepage: https://mos.caldis.me/
• About Mos: https://mos.caldis.me/about/
• Compare Mos: https://mos.caldis.me/compare/
• Agent instructions: https://mos.caldis.me/agent-instructions/
• GitHub: https://github.com/Caldis/Mos
• Wiki: https://github.com/Caldis/Mos/wiki
• Releases: https://github.com/Caldis/Mos/releases
• Discussions: https://github.com/Caldis/Mos/discussions
• Appcast: https://mos.caldis.me/appcast.xml

Mos developer resources

• Developer resources: https://mos.caldis.me/developers/
• API docs: https://mos.caldis.me/api-docs/
• API docs markdown: https://mos.caldis.me/api-docs.md
• Auth docs: https://mos.caldis.me/auth/
• Auth docs markdown: https://mos.caldis.me/auth.md
• Webhooks status: https://mos.caldis.me/webhooks/
• Webhooks markdown: https://mos.caldis.me/webhooks.md
• MCP status: https://mos.caldis.me/mcp/
• MCP markdown: https://mos.caldis.me/mcp.md
• Rate limits: https://mos.caldis.me/rate-limits/
• Rate limits markdown: https://mos.caldis.me/rate-limits.md
• Error responses: https://mos.caldis.me/errors/
• Error responses markdown: https://mos.caldis.me/errors.md
• Public AGENTS.md: https://mos.caldis.me/AGENTS.md
• Well-known agent instructions: https://mos.caldis.me/.well-known/agent-instructions.md
• Agent mode view: https://mos.caldis.me/agent/
• llms.txt: https://mos.caldis.me/llms.txt
• Full LLM context: https://mos.caldis.me/llms-full.txt
• OpenAPI: https://mos.caldis.me/api/openapi.json
• API catalog: https://mos.caldis.me/.well-known/api-catalog
• Agent discovery: https://mos.caldis.me/.well-known/agent.json
• A2A agent card: https://mos.caldis.me/.well-known/agent-card.json
• MCP discovery status: https://mos.caldis.me/.well-known/mcp

Auth and hosted API status

Public documentation and discovery endpoints require no authentication. Mos does not currently provide public OAuth, hosted REST APIs for user accounts, webhook callbacks, or a hosted MCP tool server.