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List checks

list_checks

Read-onlyIdempotent

Browse and filter monitoring checks by name, labels, or check group; returns paginated results for reviewing your organization's check fleet.

Instructions

List monitoring checks for the organization, optionally filtered by name/slug substring, labels, or check group; the filters combine with AND. Returns {data, pagination}; pass pagination.cursor back as cursor for the next page. Use this for browsing or filtering a fleet of checks. To investigate a single check's current health, use diagnose_check instead; if you already know its UID or slug, get_check is more direct. Read-only: works with mcp:read tokens.

Input Schema

Name	Required	Description
`q`	No	Case-insensitive substring match on check name or slug, e.g. "api".
`with`	No	Comma-separated extra fields: lastResult — most recent result for each check lastStatusChange — when each check last changed status Example: "lastResult,lastStatusChange".
`limit`	No	Max results (1-100, default 20).
`cursor`	No	Opaque pagination cursor returned by a previous response. Omit on the first page.
`labels`	No	Label filter as a JSON object. Returns checks that have ALL of the given labels with matching values (AND semantics). Example: {"env": "production", "team": "api"}.
`checkGroupUid`	No	Filter to checks in this group (UID or slug), e.g. "core-services".

Output Schema

Name	Required	Description	Default
`data`	No	Checks on this page.
`pagination`	No	Cursor pagination state for the filter.

Schema Changelog

Changes observed during successful MCP inspections.

Changed5 schema fields changedv0.42.0Oct 27, 2026
- addedInput schema / properties / checkGroupUid / maxLength
```
Added value: +2048
```
- addedInput schema / properties / cursor / maxLength
```
Added value: +2048
```
- addedInput schema / properties / cursor / minLength
```
Added value: +1
```
- addedInput schema / properties / q / maxLength
```
Added value: +2048
```
- addedInput schema / properties / with / maxLength
```
Added value: +2048
```
Changed2 schema fields changedv0.41.0Oct 23, 2026
- addedInput schema / additionalProperties
```
Added value: +false
```
- addedOutput schema / additionalProperties
```
Added value: +false
```

Changed1 schema field changedv0.38.5Oct 15, 2026

changedOutput schema / (root)

Previous value: -nullNew value: +{
+  "properties": {
+    "data": {
+      "description": "Checks on this page.",
+      "items": {
+        "properties": {
+          "checkGroupUid": {
+            "description": "Check group UID, when the check belongs to a group.",
+            "type": "string"
+          },
+          "config": {
+            "description": "Check-specific configuration for the type.",
+            "type": "object"
+          },
+          "createdAt": {
+            "description": "RFC3339 creation timestamp.",
+            "type": "string"
+          },
+          "description": {
+            "description": "Free-text description.",
+            "type": "string"
+          },
+          "enabled": {
+            "description": "Whether the check runs.",
+            "type": "boolean"
+          },
+          "labels": {
+            "description": "Key-value labels.",
+            "type": "object"
+          },
+          "lastResultAt": {
+            "description": "RFC3339 timestamp of the newest real result.",
+            "type": "string"
+          },
+          "name": {
+            "description": "Human-readable name.",
+            "type": "string"
+          },
+          "period": {
+            "description": "Check interval as HH:MM:SS.",
+            "type": "string"
+          },
+          "placement": {
+            "description": "\"pinned\" or \"auto\".",
+            "type": "string"
+          },
+          "regions": {
+            "description": "Regions the check runs from.",
+            "items": {
+              "type": "string"
+            },
+            "type": "array"
+          },
+          "slug": {
+            "description": "URL-friendly slug.",
+            "type": "string"
+          },
+          "status": {
+            "description": "Synthesized status: up, down, validating, created or degraded.",
+            "type": "string"
+          },
+          "statusChangedAt": {
+            "description": "RFC3339 timestamp of the last status change.",
+            "type": "string"
+          },
+          "type": {
+            "description": "Check type, e.g. \"http\".",
+            "type": "string"
+          },
+          "uid": {
+            "description": "Check UID.",
+            "type": "string"
+          }
+        },
+        "type": "object"
+      },
+      "type": "array"
+    },
+    "pagination": {
+      "description": "Cursor pagination state for the filter.",
+      "properties": {
+        "cursor": {
+          "description": "Opaque cursor for the next page; absent on the last page.",
+          "type": "string"
+        },
+        "limit": {
+          "description": "Page size used for this response.",
+          "type": "integer"
+        },
+        "total": {
+          "description": "Total checks matching the filter.",
+          "type": "integer"
+        }
+      },
+      "type": "object"
+    }
+  },
+  "type": "object"
+}

First observedv0.32.1Sep 26, 2026

TDQS

A4.9/5.0

Behavior5/5

Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?

Annotations already declare read-only, idempotent, non-destructive, closed-world behavior, but the description adds useful context beyond them: filters combine with AND, the response shape is {data, pagination}, and pagination.cursor should be passed back as cursor. It also discloses the auth requirement ('works with mcp:read tokens'), which is exactly the kind of operational detail annotations do not cover.

Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.

Conciseness5/5

Is the description appropriately sized, front-loaded, and free of redundancy?

The description is compact and front-loaded: purpose and filter behavior first, then return/pagination mechanics, then sibling routing, then auth context. Every sentence adds useful information for selecting or invoking the tool.

Shorter descriptions cost fewer tokens and are easier for agents to parse. Every sentence should earn its place.

Completeness5/5

Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?

Given six optional parameters, full schema coverage, an output schema, and rich annotations, the description covers everything an agent needs: filtering semantics, pagination, when to choose this tool versus alternatives, and the auth scope. No material gap remains.

Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.

Parameters4/5

Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?

Schema description coverage is 100%, so the baseline is 3, but the description adds meaningful cross-parameter semantics: filters for name/slug substring, labels, and check group combine with AND. It also explains the pagination cursor flow, though it does not describe the 'with' parameter or limit defaults beyond what the schema already says.

Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.

Purpose5/5

Does the description clearly state what the tool does and how it differs from similar tools?

States a specific verb and resource ('List monitoring checks') and scopes it to the organization, with optional filters clearly named. It distinguishes itself from sibling tools like get_check and diagnose_check by explaining the browsing/filtering use case.

Agents choose between tools based on descriptions. A clear purpose with a specific verb and resource helps agents select the right tool.

Usage Guidelines5/5

Does the description explain when to use this tool, when not to, or what alternatives exist?

Explicitly says to use this for browsing or filtering a fleet of checks, and names alternatives: diagnose_check for investigating one check's health, and get_check when the UID or slug is already known. This gives clear when-to-use and when-not-to-use guidance.

Agents often have multiple tools that could apply. Explicit usage guidance like "use X instead of Y when Z" prevents misuse.