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---
slug: introduction
---
# Introduction
Konnectors are scripts that import data from a web service and put those data into cozy. Each konnector is an independent application managed by the cozy home application.
All the konnectors are configured to retrieve user's data as far as 3 years back.
Some variation have to be considered :
- When the user launches the konnector manually, it fetches 1 year of data (in order to reduce running time).
- When a konnector is launched by the cozy stack (at a random time between 7am and 10am), it fetches 3 years of data.
- When a konnector retrieves a load at the half-hour timeline (ex: enedis), it fetches back to 4 weeks.
## Documentation
- Checkout the [konnector doc](https://docs.cozy.io/en/cozy-konnector-libs/) from cozy
- Error mapping messages displayed to users [here](https://github.com/cozy/cozy-libs/blob/983f5dc73e50f4a35dab401040c969477e4128ea/packages/cozy-harvest-lib/src/locales/en.json#L124-L207)
##  Repositories
- [enedis dataconnect (deprecated)](https://forge.grandlyon.com/web-et-numerique/factory/llle_project/enedis-konnector)
- [enedis sge](https://forge.grandlyon.com/web-et-numerique/factory/llle_project/enedis-sge-konnector)
- [grdf](https://forge.grandlyon.com/web-et-numerique/factory/llle_project/grdf-konnector)
- [egl](https://forge.grandlyon.com/web-et-numerique/factory/llle_project/egl-konnector)