List monitors

get

https://{customerid}.observeinc.com/v1/monitors

This operation has two response shapes, chosen per request by the
Observe-Api-Version header.

Default — stable. Omit the header and the response is a plain JSON
array of monitors. This is the long-standing behaviour that existing
callers receive, and it does not change. It is summarised here rather
than fully specified: the parameters and the response schema documented
on this page describe the versioned shape.

Versioned — rolling out. Send
Observe-Api-Version: 2026-08-04 (or later) to get the paginated
{monitors, meta} envelope specified below, with CEL filter,
limit/offset paging, orderBy and expand. This shape is being
rolled out account by account; until it reaches your account, sending
the header returns 403. An earlier or unparseable date selects the
default shape instead.

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Query Params

filter

string

CEL expression that returned monitors must match. Must evaluate to
bool, and must be URL-encoded.

Only the fields below are filterable. An expression that fails to
compile, or that references anything outside this table, is rejected
with 400; the field set is fixed, so retrying with a different
spelling will not succeed. createdBy.name is a common example of a
reference that is rejected — only .id is exposed on a user.

Field	CEL type	Notes
`id`	`int`	Compare unquoted, even though `id` serializes as a string in JSON. The default ordering.
`label`	`string`	Supports `matches()` for an RE2 regex.
`description`	`string`	Supports `matches()`. Compare against `""` for "no description" — the response renders it as `null`, but the filter sees the empty string.
`disabled`	`bool`	Turned off by a user, or by a limit.
`ruleKind`	`string`	A `MonitorRuleKind` value, e.g. `"Threshold"`.
`aiTriagingMode`	`string`	A `MonitorAiTriagingMode` value. `"Triage"` is the enabled state the list's AI auto-investigate column shows.
`createdAt`	`timestamp`	Use `timestamp("2026-01-01T00:00:00Z")` to compare.
`updatedAt`	`timestamp`
`createdBy.id`	`int`	Id of the creating user.
`updatedBy.id`	`int`	Id of the last user to update it.
`managedBy.id`	`int`	Id of the managing app. Null when no app manages it.
`managed`	`bool`	Whether an app manages this monitor. `managed == false` selects the user-managed monitors, which `managedBy.id == null` cannot express.
`scheduled`	`bool`	Whether it runs on its own schedule.
`disabledCause`	`string`	A `MonitorDisabledCause` value, e.g. `"AlertRateLimit"`. Null while enabled.
`governorState`	`string`	A `MonitorGovernorState` value: `"Normal"`, `"GracePeriod"` or `"CostDisabled"`. Null when no spend limit is configured.
`rollupStatus`	`string`	A `MonitorRollupStatus` value: the outcome of the monitor's own last run. Not every documented value is reachable — see the note below.
`health`	`string`	A `MonitorHealth` value: one rollup of run outcome, disabled cause, spend-limit state and cluster failover state. This is the value the list's Health column shows. Not every documented value is reachable — see the note below.
`alertState`	`string`	A `MonitorAlertState` value: `"Triggering"`, `"Previous"` or `"Never"`.
`muteState`	`string`	A `MonitorMuteState` value.
`muteCount`	`int`	Number of mute rules covering the monitor; `0` when unmuted.
`mutedUntil`	`timestamp`	Null when not muted, or muted indefinitely.
`lastAlarmTime`	`timestamp`	Null if it has never alerted.
`lastErrorTime`	`timestamp`	Null if it has never logged a fatal error.
`lastWarnTime`	`timestamp`	Null if it has never warned.

Comparisons combine with && and ||. A nullable field is compared
with == null / != null; write the field on the left, since
null == lastAlarmTime is not recognised as a null check.

When filter is used together with the deprecated nameExact or
nameSubstring parameters, every condition must match.

expand

boolean

When true, populates label on the createdBy and updatedBy references.

limit

int64

1 to 1000

Defaults to 200

Maximum number of results to return. Defaults to 200, max 1000.

offset

int64

≥ 0

Defaults to 0

Number of results to skip for pagination. Defaults to 0.

orderBy

string

Comma-separated fields to order by, each optionally prefixed with -
for descending. Defaults to id.

Orderable fields: id, label, description, ruleKind,
disabled, createdAt, updatedAt, createdBy, updatedBy,
managedBy, scheduled, muteState, rollupStatus, health,
alertState, aiTriagingMode, lastAlarmTime, lastErrorTime,
lastWarnTime. Anything else is
rejected with 400 — this list is narrower than the filterable
fields, so check it rather than assuming a filterable field can also
be sorted on.

health and alertState sort by severity, not alphabetically.
id is appended as a final tiebreak so paging is deterministic.

nameExact

string

deprecated

Deprecated since API version 2026-08-04: use filter with label == "..." instead. Retained for backward compatibility; limits results to an exact match on the monitor label. When combined with filter, both conditions must match.

nameSubstring

string

deprecated

Deprecated since API version 2026-08-04: use filter with label.matches("...") instead. Retained for backward compatibility; limits results to a case-insensitive substring match on the monitor label. When combined with filter, both conditions must match.

Headers

Observe-Api-Version

string

^\d{4}-\d{2}-\d{2}$

Selects the response shape by release date (YYYY-MM-DD). A date on or after 2026-08-04 returns the {monitors, meta} envelope documented below, and requires that shape to be enabled for your account (otherwise 403). Omitting the header returns the legacy bare-array response, as does an earlier or unparseable date. The no-header default never changes.

Responses

200Monitors listed successfully

400Bad request

401Unauthorized

403Forbidden

429Rate limit reached

5XXInternal server error