---
title: "Monitoring Limits and Retention"
description: "How much Silly Development monitoring keeps for free and with a paid server: projects, keys, series, daily errors and events, request rates and retention."
url: "https://sillydev.co.uk/docs/monitoring/limits"
updated: "2026-10-14"
---

Monitoring

# Limits and retention

Every account gets the free limits. An account that owns a paid server gets the higher ones on all its projects, switched on and off with the subscription.

[← Monitoring docs](https://sillydev.co.uk/docs/monitoring) · Updated 14 October 2026

**Browse the docs**

## The limits

Data past a daily limit is dropped and counted until midnight UTC, and the project's Settings tab shows how much of each limit is used and what was dropped and why. An issue still counts every occurrence past the error limit; only the full reports stop being stored.

Free and paid

```
Limit                        Free        With a paid server
Projects per account         2           3
Keys per project             5           5
Metric series                40          60
Full error reports a day     5,000       7,500
Events a day                 10,000      15,000
Slow operations a day        2,000       3,000
Server requests a minute     60          90
Browser requests a minute    120         180
Minute points kept           2 days      3 days
Hourly points kept           90 days     120 days
Daily points kept            400 days    400 days
Error reports kept           30 days     30 days
Events kept                  14 days     14 days
```

## Retention

Charts read minute points for short ranges, hourly points for longer ones and daily points for the longest, so a chart of the last year is still available after the minute detail is gone. Full error reports and events are deleted after the time above; an issue's hourly counts are kept with the other hourly points.

Deleting a project deletes everything it collected.

## Per request

One request can hold up to 500 items and 256 KiB (1 MiB unpacked); a browser request up to 100 items and 64 KiB. Metric names are at most 100 characters, a series has at most 8 tags with values of up to 64 characters, error context up to 16 KiB and event attributes up to 4 KiB. The SDKs keep within these for you.

Read next

- [Metrics and events Counting, timing and recording what matters to your project.](https://sillydev.co.uk/docs/monitoring/metrics-and-events)
- [HTTP ingest API The JSON the SDKs send, for any language without one.](https://sillydev.co.uk/docs/monitoring/ingest-api)
- [Getting started From an empty project to errors, metrics and response times in a few minutes.](https://sillydev.co.uk/docs/monitoring)