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View logs from your backend functions in the terminal. By default the command returns the 50 most recent log entries across all functions for the target app. Use flags to filter by function name, time range, or adjust the number of results.

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Usage

base44 logs
Run from a linked project directory to fetch logs for the app in .app.jsonc, or target any app on your account by passing --app-id or setting the BASE44_APP_ID environment variable. With an explicit app id, you can run logs from anywhere on your machine, including against apps you built in the Base44 online app editor and never linked locally.

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Flags

FlagDescription
--app-id <id>Target the specified app. Defaults to the app linked in the current project. See Select a target app.
--function <names>Filter by function name. Accepts a comma-separated list. If omitted, fetches logs for all functions.
--since <datetime>Show logs from this time onward. Accepts ISO 8601 format.
--until <datetime>Show logs up to this time. Accepts ISO 8601 format.
-n, --limit <n>Maximum number of results to return, between 1 and 1000. Defaults to 50.
--order <order>Sort order: asc or desc. Defaults to desc.

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Output format

The output is a list of log entries sorted by time. Each entry shows the timestamp, level, function name in brackets, and log message. For example: 
Showing 4 function log entries

2026-02-24 08:23:37 ERROR [send-email] Failed to deliver to user@example.com: connection timed out
2026-02-24 08:23:37 INFO  [send-email] Sending welcome email to user@example.com
2026-02-24 08:23:36 INFO  [process-order] Order #1042 processed successfully
2026-02-24 08:23:36 DEBUG [process-order] isolate start time: 350.47 ms (user time: 69.32 ms)
The log level reflects the console method used in your function code:
Console methodLog level
console.logINFO
console.infoINFO
console.errorERROR
console.warnWARNING
console.debugDEBUG
The output also includes system-level entries from Deno Deploy, such as isolate startup times. The log level for these entries is assigned by Deno Deploy.
The base44-troubleshooter skill teaches your agent to fetch and analyze logs for you. Try asking it to “show me all errors from the last hour.”

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See also