MAL MCP Server

Get a random character

get_random_character

Read-only

Get one random character with complete details to discover new characters or quiz yourself on anime trivia.

Instructions

Return one random character (full details). Good for discovery / trivia. No official-API fallback exists for this tool — it always needs Tenrai itself to be reachable.

Input Schema

TableJSON Schema

Name	Required	Description	Default
No arguments

Output Schema

TableJSON Schema

Name	Required	Description	Default
`url`	No
`name`	No
`about`	No
`anime`	No
`manga`	No
`mal_id`	Yes
`favorites`	No
`image_url`	No
`nicknames`	No
`name_kanji`	No
`voice_actors`	No

Schema Changelog

Changes observed during successful MCP inspections. Dates show when Glama detected each change.

Changed19 schema fields changedv0.9.0Jul 30, 2026
- addedOutput schema / properties / anime / items / properties / mal_id / exclusiveMinimum
```
Added value: +0
```
- addedOutput schema / properties / anime / items / properties / mal_id / maximum
```
Added value: +9007199254740991
```
- changedOutput schema / properties / anime / items / properties / mal_id / type
```
Previous value: -"number"New value: +"integer"
```
- addedOutput schema / properties / anime / items / required
```
Added value: +[
+  "mal_id"
+]
```
- addedOutput schema / properties / favorites / maximum
```
Added value: +9007199254740991
```
- addedOutput schema / properties / favorites / minimum
```
Added value: +0
```
- changedOutput schema / properties / favorites / type
```
Previous value: -"number"New value: +"integer"
```
- addedOutput schema / properties / mal_id / exclusiveMinimum
```
Added value: +0
```
- addedOutput schema / properties / mal_id / maximum
```
Added value: +9007199254740991
```
- changedOutput schema / properties / mal_id / type
```
Previous value: -"number"New value: +"integer"
```
- addedOutput schema / properties / manga / items / properties / mal_id / exclusiveMinimum
```
Added value: +0
```
- addedOutput schema / properties / manga / items / properties / mal_id / maximum
```
Added value: +9007199254740991
```
- changedOutput schema / properties / manga / items / properties / mal_id / type
```
Previous value: -"number"New value: +"integer"
```
- addedOutput schema / properties / manga / items / required
```
Added value: +[
+  "mal_id"
+]
```
- addedOutput schema / properties / voice_actors / items / properties / mal_id / exclusiveMinimum
```
Added value: +0
```
- addedOutput schema / properties / voice_actors / items / properties / mal_id / maximum
```
Added value: +9007199254740991
```
- changedOutput schema / properties / voice_actors / items / properties / mal_id / type
```
Previous value: -"number"New value: +"integer"
```
- addedOutput schema / properties / voice_actors / items / required
```
Added value: +[
+  "mal_id"
+]
```
- addedOutput schema / required
```
Added value: +[
+  "mal_id"
+]
```
Changed1 schema field changedv0.8.0Jul 29, 2026
- addedInput schema / additionalProperties
```
Added value: +false
```

Changed2 schema fields changedv0.7.1Jul 22, 2026

changedInput schema / $schema

Previous value: -"http://json-schema.org/draft-07/schema#"New value: +"https://json-schema.org/draft/2020-12/schema"

changedOutput schema / (root)

Previous value: -nullNew value: +{
+  "$schema": "https://json-schema.org/draft/2020-12/schema",
+  "additionalProperties": false,
+  "properties": {
+    "about": {
+      "type": "string"
+    },
+    "anime": {
+      "items": {
+        "additionalProperties": false,
+        "properties": {
+          "mal_id": {
+            "type": "number"
+          },
+          "position": {
+            "type": "string"
+          },
+          "role": {
+            "type": "string"
+          },
+          "title": {
+            "type": "string"
+          }
+        },
+        "type": "object"
+      },
+      "type": "array"
+    },
+    "favorites": {
+      "type": "number"
+    },
+    "image_url": {
+      "type": "string"
+    },
+    "mal_id": {
+      "type": "number"
+    },
+    "manga": {
+      "items": {
+        "additionalProperties": false,
+        "properties": {
+          "mal_id": {
+            "type": "number"
+          },
+          "position": {
+            "type": "string"
+          },
+          "role": {
+            "type": "string"
+          },
+          "title": {
+            "type": "string"
+          }
+        },
+        "type": "object"
+      },
+      "type": "array"
+    },
+    "name": {
+      "type": "string"
+    },
+    "name_kanji": {
+      "type": "string"
+    },
+    "nicknames": {
+      "items": {
+        "type": "string"
+      },
+      "type": "array"
+    },
+    "url": {
+      "type": "string"
+    },
+    "voice_actors": {
+      "items": {
+        "additionalProperties": false,
+        "properties": {
+          "language": {
+            "type": "string"
+          },
+          "mal_id": {
+            "type": "number"
+          },
+          "name": {
+            "type": "string"
+          }
+        },
+        "type": "object"
+      },
+      "type": "array"
+    }
+  },
+  "type": "object"
+}

Addedv0.2.0Jun 29, 2026

TDQS

A4.5/5.0

Behavior4/5

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

Annotations already convey read-only and open-world hints. The description adds useful beyond-annotation behavior: there is no official-API fallback, so the tool depends on Tenrai being reachable. It also states the result includes "full details," which is helpful supplemental behavioral context.

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?

Two sentences deliver the behavior, use case, and a critical operational warning without filler. The primary behavior is front-loaded, and every phrase earns its place.

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 zero parameters, an output schema, and safety hints already provided by annotations, the only missing contextual ingredient is the reachability restriction, which is included. An agent has everything necessary to decide when and how to call this tool.

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?

The tool has zero parameters, and the schema is empty with 100% coverage. There is no parameter behavior to document, so the baseline of 4 applies; the description correctly omits irrelevant input details.

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?

"Return one random character (full details)" names the exact operation, the resource type, and the random selection behavior. This clearly distinguishes it from search_characters, get_character, and the other get_random_* sibling tools without requiring schema inspection.

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

Usage Guidelines4/5

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

The description gives clear usage context: "Good for discovery / trivia." It also warns that no official-API fallback exists and Tenrai must be reachable, which is a useful operational constraint. It does not explicitly name alternatives or exclusion cases, so it stops short of a 5.

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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