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vrchat_friends_overview

Read-only

Summarize friends by status and location to quickly see who is online and where, with enriched world and group details in a read-only overview.

Instructions

Summarize friends by status and location with enriched world/group info (read-only).

Input Schema

TableJSON Schema

Name	Required	Description	Default
`status`	No
`maxLocations`	No
`statusFilter`	No
`includeOffline`	No
`instanceDetailLevel`	No
`minInstanceUserCount`	No

Output Schema

TableJSON Schema

Name	Required	Description	Default
`stale`	Yes
`totals`	Yes
`segments`	Yes
`locations`	Yes
`truncated`	Yes
`onlineCount`	Yes
`maxLocations`	Yes
`offlineCount`	Yes
`statusCounts`	Yes
`statusFilter`	No
`totalFriends`	Yes
`includeOffline`	Yes
`totalLocations`	Yes
`omittedLocations`	Yes
`returnedLocations`	Yes
`locationsTruncated`	Yes
`instanceDetailLevel`	No
`minInstanceUserCount`	No

Schema Changelog

Changes observed during successful MCP inspections.

Changed3 schema fields changedv0.1.13Sep 6, 2026

changedOutput schema / properties / locations / items / properties / instance / anyOf

Previous value: -[
-  {
-    "additionalProperties": {},
-    "properties": {
-      "calendarEntryId": {
-        "anyOf": [
-          {
-            "type": "string"
-          },
-          {
-            "type": "null"
-          }
-        ]
-      },
-      "canRequestInvite": {
-        "default": true,
-        "type": "boolean"
-      },
-      "capacity": {
-        "maximum": 9007199254740991,
-        "minimum": 0,
-        "type": "integer"
-      },
-      "displayName": {
-        "anyOf": [
-          {
-            "type": "string"
-          },
-          {
-            "type": "null"
-          }
-        ]
-      },
-      "full": {
-        "default": false,
-        "type": "boolean"
-      },
-      "groupAccessType": {
-        "default": "members",
-        "enum": [
-          "members",
-          "plus",
-          "public"
-        ],
-        "type": "string"
-      },
-      "hasCapacityForYou": {
-        "type": "boolean"
-      },
-      "id": {
-        "type": "string"
-      },
-      "instanceId": {
-        "type": "string"
-      },
-      "location": {
-        "type": "string"
-      },
-      "n_users": {
-        "maximum": 9007199254740991,
-        "minimum": 0,
-        "type": "integer"
-      },
-      "name": {
-        "minLength": 1,
-        "type": "string"
-      },
-      "photonRegion": {
-        "enum": [
-          "eu",
-          "jp",
-          "unknown",
-          "us",
-          "use",
-          "usw",
-          "usx"
-        ],
-        "type": "string"
-      },
-      "queueEnabled": {
-        "type": "boolean"
-      },
-      "queueSize": {
-        "maximum": 9007199254740991,
-        "minimum": 0,
-        "type": "integer"
-      },
-      "recommendedCapacity": {
-        "maximum": 9007199254740991,
-        "minimum": 0,
-        "type": "integer"
-      },
-      "region": {
-        "enum": [
-          "eu",
-          "jp",
-          "unknown",
-          "us",
-          "use",
-          "usw",
-          "usx"
-        ],
-        "type": "string"
-      },
-      "shortName": {
-        "anyOf": [
-          {
-            "minLength": 1,
-            "type": "string"
-          },
-          {
-            "type": "null"
-          }
-        ]
-      },
-      "tags": {
-        "items": {
-          "type": "string"
-        },
-        "type": "array"
-      },
-      "type": {
-        "enum": [
-          "friends",
-          "group",
-          "hidden",
-          "private",
-          "public"
-        ],
-        "type": "string"
-      },
-      "userCount": {
-        "maximum": 9007199254740991,
-        "minimum": 0,
-        "type": "integer"
-      },
-      "worldId": {
-        "type": "string"
-      }
-    },
-    "type": "object"
-  },
-  {
-    "additionalProperties": {},
-    "propertyNames": {
-      "type": "string"
-    },
-    "type": "object"
-  }
-]New value: +[
+  {
+    "additionalProperties": {},
+    "properties": {
+      "calendarEntryId": {
+        "type": [
+          "string",
+          "null"
+        ]
+      },
+      "canRequestInvite": {
+        "default": true,
+        "type": "boolean"
+      },
+      "capacity": {
+        "maximum": 9007199254740991,
+        "minimum": 0,
+        "type": "integer"
+      },
+      "displayName": {
+        "type": [
+          "string",
+          "null"
+        ]
+      },
+      "full": {
+        "default": false,
+        "type": "boolean"
+      },
+      "groupAccessType": {
+        "default": "members",
+        "enum": [
+          "members",
+          "plus",
+          "public"
+        ],
+        "type": "string"
+      },
+      "hasCapacityForYou": {
+        "type": "boolean"
+      },
+      "id": {
+        "type": "string"
+      },
+      "instanceId": {
+        "type": "string"
+      },
+      "location": {
+        "type": "string"
+      },
+      "n_users": {
+        "maximum": 9007199254740991,
+        "minimum": 0,
+        "type": "integer"
+      },
+      "name": {
+        "minLength": 1,
+        "type": "string"
+      },
+      "photonRegion": {
+        "enum": [
+          "eu",
+          "jp",
+          "unknown",
+          "us",
+          "use",
+          "usw",
+          "usx"
+        ],
+        "type": "string"
+      },
+      "queueEnabled": {
+        "type": "boolean"
+      },
+      "queueSize": {
+        "maximum": 9007199254740991,
+        "minimum": 0,
+        "type": "integer"
+      },
+      "recommendedCapacity": {
+        "maximum": 9007199254740991,
+        "minimum": 0,
+        "type": "integer"
+      },
+      "region": {
+        "enum": [
+          "eu",
+          "jp",
+          "unknown",
+          "us",
+          "use",
+          "usw",
+          "usx"
+        ],
+        "type": "string"
+      },
+      "shortName": {
+        "anyOf": [
+          {
+            "minLength": 1,
+            "type": "string"
+          },
+          {
+            "type": "null"
+          }
+        ]
+      },
+      "tags": {
+        "items": {
+          "type": "string"
+        },
+        "type": "array"
+      },
+      "type": {
+        "enum": [
+          "friends",
+          "group",
+          "hidden",
+          "private",
+          "public"
+        ],
+        "type": "string"
+      },
+      "userCount": {
+        "maximum": 9007199254740991,
+        "minimum": 0,
+        "type": "integer"
+      },
+      "worldId": {
+        "type": "string"
+      }
+    },
+    "type": "object"
+  },
+  {
+    "additionalProperties": {},
+    "propertyNames": {
+      "type": "string"
+    },
+    "type": "object"
+  }
+]

removedOutput schema / properties / locations / items / properties / raw / anyOf

Removed value: -[
-  {
-    "type": "string"
-  },
-  {
-    "type": "null"
-  }
-]

addedOutput schema / properties / locations / items / properties / raw / type
```
Added value: +[
+  "string",
+  "null"
+]
```

First observedv0.1.8Jul 29, 2026

TDQS

B3/5.0

Behavior3/5

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

The readOnlyHint annotation already declares the operation non-destructive, and the description reinforces this with 'read-only.' It adds some context about enrichment, but it does not disclose behavior around pagination, default offline-user handling, or how instance detail levels affect results. No contradiction exists.

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

Conciseness4/5

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

The description is a single, efficient sentence that front-loads the action, resource, and core dimensions. The only minor redundancy is repeating 'read-only' despite the annotation, but it does not meaningfully hurt the description.

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

Completeness3/5

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

Output schema and readOnly annotation cover part of the picture, but the tool has six undocumented parameters and a fairly involved filtering/summary behavior. The description does not clarify parameter roles or when to set them, leaving a material gap for confident invocation.

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

Parameters2/5

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

Schema description coverage is 0%, and the description provides no parameter-level meaning. The distinction between 'status' and 'statusFilter' is ambiguous, and parameters like 'maxLocations', 'minInstanceUserCount', and 'instanceDetailLevel' are left unexplained, forcing the agent to rely on names alone.

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

Purpose4/5

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

The description uses a specific verb, 'Summarize', identifies the resource, 'friends', and names the key dimensions: status, location, and enriched world/group info. This implies an aggregated overview rather than a raw list, which helps separate it from siblings like vrchat_friends_list, though it does not explicitly name them.

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

Usage Guidelines2/5

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

There is no guidance on when to use this tool versus alternatives such as vrchat_friends_list, vrchat_friends_search, or vrchat_friend_details. The description only communicates the high-level purpose, leaving the agent to infer when this overview is preferred.

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

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