> ## Documentation Index
> Fetch the complete documentation index at: https://docs.sia.vision/llms.txt
> Use this file to discover all available pages before exploring further.

# Assign an inspected Character reference

> character_reference_assign: permissions and generated input/output contracts.

`character_reference_assign` · Gateway release **0.8.3**

Assign the exact inspected linked image to a Character reference role using its current fingerprint. Prior candidates remain retained. This records MCP-agent review for the connected account; it does not approve canon or edit Production pins.

Required scopes: `account:read`, `studio:write`. Changes saved state or requests work; review the operation’s effects.

Availability depends on runtime configuration and the permissions granted to this connection. Use live MCP discovery as the authority.

## Input

```json theme={null}
{
  "type": "object",
  "additionalProperties": false,
  "properties": {
    "storyworldId": {
      "type": "string",
      "pattern": "^[a-fA-F0-9]{24}$",
      "description": "ID of an accessible saved Storyworld returned by discovery. Keep this destination fixed for the operation."
    },
    "characterId": {
      "type": "string",
      "pattern": "^[a-fA-F0-9]{24}$",
      "description": "ID of the exact saved Character to reuse; do not create a new identity for an outfit or accessory."
    },
    "role": {
      "type": "string",
      "enum": [
        "identity_portrait",
        "waist_up",
        "full_body",
        "expression_sheet"
      ],
      "description": "The reference view being inspected or assigned; keep the candidate and its receipt tied to this role."
    },
    "assetId": {
      "type": "string",
      "pattern": "^[a-fA-F0-9]{24}$",
      "description": "ID of an already saved and linked Media record returned by this workflow."
    },
    "assignmentFingerprint": {
      "type": "string",
      "minLength": 1,
      "maxLength": 128
    },
    "assetReviewed": {
      "const": true,
      "type": "boolean"
    }
  },
  "required": [
    "storyworldId",
    "characterId",
    "role",
    "assetId",
    "assignmentFingerprint",
    "assetReviewed"
  ]
}
```

## Declared output

This is the declared success schema. Error results and binary media blocks are separate MCP protocol results.

```json theme={null}
{
  "$schema": "https://json-schema.org/draft/2020-12/schema",
  "type": "object",
  "properties": {
    "schemaVersion": {
      "type": "string",
      "const": "1"
    },
    "characterId": {
      "type": "string",
      "pattern": "^[a-f0-9]{24}$"
    },
    "assetId": {
      "type": "string",
      "pattern": "^[a-f0-9]{24}$"
    },
    "role": {
      "type": "string"
    },
    "reviewStatus": {
      "type": "string"
    },
    "assignmentFingerprint": {
      "type": "string"
    }
  },
  "required": [
    "schemaVersion",
    "characterId",
    "assetId",
    "role",
    "reviewStatus",
    "assignmentFingerprint"
  ],
  "additionalProperties": {}
}
```

[All tools](https://docs.sia.vision/mcp-reference.md) · [Permissions](https://docs.sia.vision/authentication.md) · [Media and recovery](https://docs.sia.vision/media-and-recovery.md)


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