Monitoring

    Advanced Monitoring Fields

    The four advanced site fields — response-time threshold, HTTP method, custom headers, and expected body — explained with examples.

    Updated 2026-06-15
    2 min read
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    Advanced Monitoring Fields#

    The Advanced Monitoring section on Add Site / Edit Site exposes four fields that let you tune exactly how LemWatch probes your endpoint. All four persist correctly — earlier versions silently dropped them because they were missing from the validation schema. That's fixed.

    1. Response time threshold (ms)#

  1. Whole number, 0 – 60,000
  2. Triggers a "slow response" alert when a check exceeds it
  3. Leave blank for the platform default — see Response-time thresholds

    4. 2. HTTP method#

  4. One of: HEAD, GET, POST, PUT
  5. Default HEAD is cheapest; switch to GET if your origin returns 405 on HEAD
  6. See Custom HTTP methods

    7. 3. Custom headers#

  7. JSON object string, max 4,000 characters
  8. Validated as a real JSON object on save — pasted strings are parsed before write
  9. Use for bearer tokens, custom User-Agents, host overrides
  10. Full guide: Custom request headers

    11. 4. Expected body contains#

  11. Up to 500 characters of plain text
  12. Treated as a substring match against the response body
  13. Fires a "content missing" alert when the substring is absent
  14. Full guide: Expected body content

    15. Where these live#

    Together with the health alert threshold they form the per-site alerting contract. Save the site to apply — changes take effect on the next scheduled check.

    Troubleshooting#

  15. Field reverts to blank after save? Older builds had this bug; pull the latest and retry.
  16. Headers rejected? The JSON must parse as an object (e.g. {"X-Token":"abc"}), not an array or string.
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    Custom Request Headers

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    Response Time Threshold Alerts

    Get alerted when response times consistently exceed your limits.

    Custom HTTP Methods & Headers

    Monitor endpoints behind authentication with custom headers.

    Custom Request Headers

    Send custom HTTP headers with every check — bearer tokens, User-Agents, host overrides. Validated as JSON, 4 kB cap.

    Expected Body Content

    Assert a substring exists in the response body. 500-char cap. Use for "page renders" checks; for richer rules use Money Page Monitor.

    Health Alert Threshold

    Set the health-score number that triggers an alert. Range 0–100, default 70. Setting 0 is valid and disables score-based alerts.

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