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

# Audit Logs

> Hash-chained audit trail system

AgentSystems includes an audit trail feature that uses cryptographic hash chaining for agent executions.

<Info>
  Agent executions are logged with cryptographic hashing for audit purposes.
</Info>

## How It Works

The audit system creates a hash-chained log of execution records:

<Steps>
  <Step title="Event Capture">
    System records agent executions automatically
  </Step>

  <Step title="Hash Generation">
    Each log entry includes a SHA-256 hash of its contents
  </Step>

  <Step title="Chain Linking">
    Each hash includes the previous entry's hash, creating a chain
  </Step>

  <Step title="Verification">
    Changes to past entries can be detected via hash verification (for tamper-evidence)
  </Step>
</Steps>

## Viewing Audit Logs

### Via UI

Navigate to **Executions** in the AgentSystems UI at [http://localhost:3001](http://localhost:3001).

The UI displays:

* Execution timeline
* Agent details
* Request/response data
* Hash verification (for tamper-evidence) status
* Filter and search options

## Audit Features

<Columns cols={2}>
  <Card title="Change Detection" icon="shield-check">
    Can help detect modifications to past logs
  </Card>

  <Card title="Audit Trail" icon="file-signature">
    Cryptographic hashing (for tamper-evidence) of execution history
  </Card>

  <Card title="Time Ordering" icon="clock">
    Records chronological sequence of events
  </Card>

  <Card title="Hash Verification" icon="lock">
    Uses SHA-256 hashing for verification (tamper-evidence)
  </Card>
</Columns>