> For clean Markdown of any page, append .md to the page URL.
> For a complete documentation index, see https://docs.loreos.app/llms.txt.
> For AI client integration (Claude Code, Cursor, etc.), connect to the MCP server at https://docs.loreos.app/_mcp/server.

# Character Runtime Preview

GET https://api.loreos.app/v1/characters/{slug}/runtime-preview

"What will the engine actually use?" — redacted product-level summary of the
active version: relational domain (dimension NAMES only, NO live numerics per
OS-D08), persona/voice/forbidden/world-seed summaries, active assets, image +
proactive settings. App-scoped; 404 if not owned.

Reference: https://docs.loreos.app/api-reference/characters/character-runtime-preview

## Authentication

- `Authorization` header (bearer token, required) — LoreOS runtime API key (`ck_...`), sent as `Authorization: Bearer <key>`.

## Servers

- `https://api.loreos.app` (Production, default)
- `http://127.0.0.1:8000` (Local development)

## Request

### Path parameters

- `slug` (string, required)

## Response

### 200

Successful Response

- `schema_version` ("v0", required) — LoreOS success-envelope version.
- `data` (CharacterRuntimePreviewData, required)
- `next_actions` (list of V1NextAction, required) — Concrete follow-up API actions; empty when no action is required.

## Errors

### 404 Not Found Error

Character not found in the caller's app.

- `detail` (V1ErrorDetail, required) — Stable public error core; domain-specific fields may be added alongside it.

### 409 Conflict Error

Character has no active published version.

- `detail` (V1ErrorDetail, required) — Stable public error core; domain-specific fields may be added alongside it.

### 422 Unprocessable Entity Error

Validation Error

- `detail` (list of ValidationError, optional)

## Types

### CharacterRuntimePreviewData

- `active_version_id` (string, required)
- `relational_domain` (RuntimeRelationalDomain, required)
- `persona_summary` (RuntimePersonaSummary, required)
- `voice_style_summary` (RuntimeVoiceStyleSummary, required)
- `forbidden_style_summary` (RuntimeForbiddenStyleSummary, required)
- `world_seed_summary` (RuntimeWorldSeedSummary, required)
- `identity_assets` (list of RuntimeVisualAssetSummary, required)
- `inventory_assets` (list of RuntimeVisualAssetSummary, required)
- `image_settings` (RuntimeImageSettings, required)
- `proactive_settings` (RuntimeProactiveSettings, required)
- `redacted` (true, required)

### V1NextAction

- `command` (string, required) — The next API command an agent can execute.
- `description` (string, required) — Why or when to execute the command.

### V1ErrorDetail

Stable public error core; domain-specific fields may be added alongside it.

- `code` (string, required)
- `message` (string, required)
- `fix` (string, required)

### ValidationError

- `loc` (list of ValidationErrorLocItems, required)
- `msg` (string, required)
- `type` (string, required)
- `input` (any, optional)
- `ctx` (ValidationErrorCtx, optional)

### RuntimeRelationalDomain

- `domain` (string, required)
- `dimensions` (list of RuntimeRelationalDimension, required)
- `numeric_values_exposed` (false, required)

### RuntimePersonaSummary

- `display_name` (string, required)
- `locale` (string, required)
- `has_persona` (boolean, required)
- `visible_interests` (list of string, required)

### RuntimeVoiceStyleSummary

- `voice_sample_count` (integer, required)
- `example_dialogue_count` (integer, required)

### RuntimeForbiddenStyleSummary

- `rule_count` (integer, required)

### RuntimeWorldSeedSummary

- `seeded_fact_count` (integer, required)

### RuntimeVisualAssetSummary

- `asset_id` (string, required, nullable)
- `category` (string, required, nullable)
- `label` (string, required, nullable)

### RuntimeImageSettings

- `image_proactivity` (double, required)
- `daily_image_cap` (integer, required)
- `selfie_comfort` (double, required)

### RuntimeProactiveSettings

- `cold_initiate_enabled` (boolean, required)
- `session_resume_enabled` (boolean, required)
- `daily_initiate_cap` (integer, required)

### ValidationErrorLocItems

### ValidationErrorCtx

### RuntimeRelationalDimension

- `key` (string, required)
- `label` (string, required)
- `lower_is_open` (boolean, required)

## Examples

**Response**

```json
{
  "schema_version": "string",
  "data": {
    "active_version_id": "string",
    "relational_domain": {
      "domain": "string",
      "dimensions": [
        {
          "key": "string",
          "label": "string",
          "lower_is_open": true
        }
      ],
      "numeric_values_exposed": false
    },
    "persona_summary": {
      "display_name": "string",
      "locale": "string",
      "has_persona": true,
      "visible_interests": [
        "string"
      ]
    },
    "voice_style_summary": {
      "voice_sample_count": 1,
      "example_dialogue_count": 1
    },
    "forbidden_style_summary": {
      "rule_count": 1
    },
    "world_seed_summary": {
      "seeded_fact_count": 1
    },
    "identity_assets": [
      {
        "asset_id": "string",
        "category": "string",
        "label": "string"
      }
    ],
    "inventory_assets": [
      {
        "asset_id": "string",
        "category": "string",
        "label": "string"
      }
    ],
    "image_settings": {
      "image_proactivity": 1.1,
      "daily_image_cap": 1,
      "selfie_comfort": 1.1
    },
    "proactive_settings": {
      "cold_initiate_enabled": true,
      "session_resume_enabled": true,
      "daily_initiate_cap": 1
    },
    "redacted": true
  },
  "next_actions": [
    {
      "command": "string",
      "description": "string"
    }
  ]
}
```

**SDK Code**

```python
import requests

url = "https://api.loreos.app/v1/characters/slug/runtime-preview"

headers = {"Authorization": "Bearer <token>"}

response = requests.get(url, headers=headers)

print(response.json())
```

```javascript
const url = 'https://api.loreos.app/v1/characters/slug/runtime-preview';
const options = {method: 'GET', headers: {Authorization: 'Bearer <token>'}};

try {
  const response = await fetch(url, options);
  const data = await response.json();
  console.log(data);
} catch (error) {
  console.error(error);
}
```

```go
package main

import (
	"fmt"
	"net/http"
	"io"
)

func main() {

	url := "https://api.loreos.app/v1/characters/slug/runtime-preview"

	req, _ := http.NewRequest("GET", url, nil)

	req.Header.Add("Authorization", "Bearer <token>")

	res, _ := http.DefaultClient.Do(req)

	defer res.Body.Close()
	body, _ := io.ReadAll(res.Body)

	fmt.Println(res)
	fmt.Println(string(body))

}
```

```ruby
require 'uri'
require 'net/http'

url = URI("https://api.loreos.app/v1/characters/slug/runtime-preview")

http = Net::HTTP.new(url.host, url.port)
http.use_ssl = true

request = Net::HTTP::Get.new(url)
request["Authorization"] = 'Bearer <token>'

response = http.request(request)
puts response.read_body
```

```java
import com.mashape.unirest.http.HttpResponse;
import com.mashape.unirest.http.Unirest;

HttpResponse<String> response = Unirest.get("https://api.loreos.app/v1/characters/slug/runtime-preview")
  .header("Authorization", "Bearer <token>")
  .asString();
```

```php
<?php
require_once('vendor/autoload.php');

$client = new \GuzzleHttp\Client();

$response = $client->request('GET', 'https://api.loreos.app/v1/characters/slug/runtime-preview', [
  'headers' => [
    'Authorization' => 'Bearer <token>',
  ],
]);

echo $response->getBody();
```

```csharp
using RestSharp;

var client = new RestClient("https://api.loreos.app/v1/characters/slug/runtime-preview");
var request = new RestRequest(Method.GET);
request.AddHeader("Authorization", "Bearer <token>");
IRestResponse response = client.Execute(request);
```

```swift
import Foundation

let headers = ["Authorization": "Bearer <token>"]

let request = NSMutableURLRequest(url: NSURL(string: "https://api.loreos.app/v1/characters/slug/runtime-preview")! as URL,
                                        cachePolicy: .useProtocolCachePolicy,
                                    timeoutInterval: 10.0)
request.httpMethod = "GET"
request.allHTTPHeaderFields = headers

let session = URLSession.shared
let dataTask = session.dataTask(with: request as URLRequest, completionHandler: { (data, response, error) -> Void in
  if (error != nil) {
    print(error as Any)
  } else {
    let httpResponse = response as? HTTPURLResponse
    print(httpResponse)
  }
})

dataTask.resume()
```