curl "http://localhost:8000/api/v2/agents/my-agent/policy/presets" \
  -H "X-Session-Token: your_session_token"

{
  "presets": [
    {
      "name": "conservative",
      "description": "Expire only fast-rotting state. Nothing durable ages out, and nothing is ever purged.",
      "retention": { "context": "30d", "event": "90d", "error": "90d" },
      "rule_count": 1,
      "purge_expired_after": "never"
    },
    {
      "name": "balanced",
      "description": "Sensible defaults for a working agent: transient state ages out in weeks, semantic knowledge in months, durable truths never.",
      "retention": {
        "context": "7d",
        "event": "30d",
        "error": "30d",
        "observation": "60d",
        "commitment": "90d",
        "artifact": "180d"
      },
      "rule_count": 3,
      "purge_expired_after": "never"
    },
    {
      "name": "aggressive",
      "description": "Keep the working set tight. Most types age out quickly and expired memories are purged after a year.",
      "retention": {
        "context": "3d",
        "event": "14d",
        "error": "14d",
        "observation": "30d",
        "commitment": "30d",
        "artifact": "60d",
        "fact": "180d",
        "decision": "180d",
        "goal": "180d",
        "learning": "180d"
      },
      "rule_count": 3,
      "purge_expired_after": "365d"
    }
  ]
}

{
  "detail": "Missing session token. Use X-Session-Token header."
}