About Sage

Sage is a fast agent that collects logs from files and journald, turns them into structured events and ships them where you need them. It started in 2026 as a replacement for a tool that had grown too large for the job and is developed in the open by a small group of maintainers.

#What we care about

• Boring operation. Sage should do the same thing every time and say clearly when it cannot.
• Small surface. One binary, one configuration file, no daemons it depends on.
• Good documentation. If something is not written down here, that is a bug.

#Versioning

Sage follows semantic versioning. Within a major version, configuration files and command lines keep working; anything deprecated keeps working for at least two minor releases and is listed in the changelog.

#License

Sage is free software, released under the MIT License:

Copyright (c) 2026 The Sage Authors

Permission is hereby granted, free of charge, to any person obtaining a copy
of this software and associated documentation files (the "Software"), to deal
in the Software without restriction, including without limitation the rights
to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
copies of the Software, and to permit persons to whom the Software is
furnished to do so, subject to the following conditions:

The above copyright notice and this permission notice shall be included in all
copies or substantial portions of the Software.

THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
SOFTWARE.