> ## Documentation Index
> Fetch the complete documentation index at: https://docs.agentlinkops.com/llms.txt
> Use this file to discover all available pages before exploring further.

# linktrail check

> Check due ledger entries.

```bash theme={null}
linktrail check --all --json
```

## Behavior and output

Checks selected source pages with the local verifier. Records changed observations and per-entry activity; repeated identical observations do not append another row. JSON output is JSONL, one observation per line.

## Arguments

\--filter TEXT; --all ignores due times; --json; --fail-on-unknown; --concurrency N defaults to 6; --timeout MILLISECONDS defaults to 20000; --host-delay MILLISECONDS defaults to 2000. Numeric defaults may be set in config.defaults.

## Exit status

0 when no expected placement is conclusively absent; 1 when an expected placement is observed absent with complete evidence; --fail-on-unknown also makes unknown results return 1 in text mode. With --json the current command returns the summary exit code before applying --fail-on-unknown. Usage/configuration errors return 2.

Read [configuration and file ownership](/reference/local/configuration) before automating this command. Read [local file contracts](/reference/local/artifacts) for artifact fields. Browse the [local command index](/reference/local/index) for related commands.

<Note>Reference follows the current development CLI and HTTP contracts. Hosted availability depends on the selected environment. See [capability status](/capability-status).</Note>