# Fable Distiller (`gray0/fable-distiller`) Actor

Bundle the Claude Fable 5 system prompt and apply it to any LLM model via your own API key.

- **URL**: https://apify.com/gray0/fable-distiller.md
- **Developed by:** [Safwan Kazi](https://apify.com/gray0) (community)
- **Categories:** Agents, AI
- **Stats:** 1 total users, 0 monthly users, 0.0% runs succeeded, 0 bookmarks
- **User rating**: No ratings yet

## Pricing

from $20.00 / 1,000 results

This Actor is paid per event and usage. You are charged both the fixed price for specific events and for Apify platform usage.

Learn more: https://docs.apify.com/platform/actors/running/actors-in-store#pay-per-event

## What's an Apify Actor?

Actors are a software tools running on the Apify platform, for all kinds of web data extraction and automation use cases.
In Batch mode, an Actor accepts a well-defined JSON input, performs an action which can take anything from a few seconds to a few hours,
and optionally produces a well-defined JSON output, datasets with results, or files in key-value store.
In Standby mode, an Actor provides a web server which can be used as a website, API, or an MCP server.
Actors are written with capital "A".

## How to integrate an Actor?

If asked about integration, you help developers integrate Actors into their projects.
You adapt to their stack and deliver integrations that are safe, well-documented, and production-ready.
The best way to integrate Actors is as follows.

In JavaScript/TypeScript projects, use official [JavaScript/TypeScript client](https://docs.apify.com/api/client/js.md):

```bash
npm install apify-client
```

In Python projects, use official [Python client library](https://docs.apify.com/api/client/python.md):

```bash
pip install apify-client
```

In shell scripts, use [Apify CLI](https://docs.apify.com/cli/docs.md):

````bash
# MacOS / Linux
curl -fsSL https://apify.com/install-cli.sh | bash
# Windows
irm https://apify.com/install-cli.ps1 | iex
```bash

In AI frameworks, you might use the [Apify MCP server](https://docs.apify.com/platform/integrations/mcp.md).

If your project is in a different language, use the [REST API](https://docs.apify.com/api/v2.md).

For usage examples, see the [API](#api) section below.

For more details, see Apify documentation as [Markdown index](https://docs.apify.com/llms.txt) and [Markdown full-text](https://docs.apify.com/llms-full.txt).


# README

## Fable Distiller - Apify Actor

Bundle the **Claude Fable 5** system prompt (3,825 lines) and apply it to any LLM model via your own API key.

### How It Works

1. Select your **provider** (OpenAI, Anthropic, OpenRouter, or a custom OpenAI-compatible endpoint)
2. Enter your **API key** and choose a **model**
3. Provide your **messages** as a JSON array
4. The Actor prepends the entire Fable 5 system prompt and sends the request
5. The response is returned with token usage and metadata

### Input

| Field | Type | Required | Description |
|-------|------|----------|-------------|
| `provider` | select | Yes | `openai`, `anthropic`, `openrouter`, or `custom` |
| `model` | string | Yes | Model name/ID (e.g., `gpt-4o`, `claude-sonnet-4-20250514`) |
| `apiKey` | secret string | Yes | Your API key for the chosen provider |
| `messages` | JSON array | Yes | `[{"role": "user", "content": "..."}]` |
| `apiBaseUrl` | string | No | Custom base URL (required for `custom` provider) |
| `maxTokens` | integer | No (default: 4096) | Max response tokens |
| `temperature` | number | No (default: 1.0) | Response temperature (0.0–2.0) |

### Output

**Success:**
```json
{
  "success": true,
  "provider": "openai",
  "model": "gpt-4o",
  "content": "...",
  "usage": { "inputTokens": 1000, "outputTokens": 500, "totalTokens": 1500 },
  "finishReason": "stop",
  "id": "chatcmpl-xxx"
}
````

**Error:**

```json
{
  "success": false,
  "provider": "openai",
  "model": "gpt-4o",
  "error": { "type": "auth_error", "message": "Invalid API key", "statusCode": 401 }
}
```

### Development

```bash
## Copy the Fable 5 prompt into this directory
cp ../../claude-fable-5.md ./claude-fable-5.md

## Install dependencies
npm install

## Type-check
npm run typecheck

## Run tests
npm test

## Build
npm run build

## Run locally (requires a sample INPUT.json in the actor directory)
npx apify run
```

### Deployment

```bash
npx apify login
npx apify push
```

# Actor input Schema

## `provider` (type: `string`):

Select your LLM provider.

## `model` (type: `string`):

Model name/ID (e.g., gpt-4o, claude-sonnet-4-20250514).

## `apiKey` (type: `string`):

Your API key for the chosen provider.

## `apiBaseUrl` (type: `string`):

Custom base URL (required for "custom" provider, e.g., https://my-endpoint.example.com/v1).

## `messages` (type: `array`):

Array of message objects with "role" and "content" fields (e.g., \[{"role": "user", "content": "Hello"}]).

## `maxTokens` (type: `integer`):

Maximum number of tokens in the response.

## `temperature` (type: `number`):

Temperature for response generation (0.0–2.0).

## Actor input object example

```json
{
  "messages": [
    {
      "role": "user",
      "content": "Hello, how are you?"
    }
  ],
  "maxTokens": 4096,
  "temperature": 1
}
```

# API

You can run this Actor programmatically using our API. Below are code examples in JavaScript, Python, and CLI, as well as the OpenAPI specification and MCP server setup.

## JavaScript example

```javascript
import { ApifyClient } from 'apify-client';

// Initialize the ApifyClient with your Apify API token
// Replace the '<YOUR_API_TOKEN>' with your token
const client = new ApifyClient({
    token: '<YOUR_API_TOKEN>',
});

// Prepare Actor input
const input = {
    "apiKey": "",
    "apiBaseUrl": "",
    "messages": [
        {
            "role": "user",
            "content": "Hello, how are you?"
        }
    ]
};

// Run the Actor and wait for it to finish
const run = await client.actor("gray0/fable-distiller").call(input);

// Fetch and print Actor results from the run's dataset (if any)
console.log('Results from dataset');
console.log(`💾 Check your data here: https://console.apify.com/storage/datasets/${run.defaultDatasetId}`);
const { items } = await client.dataset(run.defaultDatasetId).listItems();
items.forEach((item) => {
    console.dir(item);
});

// 📚 Want to learn more 📖? Go to → https://docs.apify.com/api/client/js/docs

```

## Python example

```python
from apify_client import ApifyClient

# Initialize the ApifyClient with your Apify API token
# Replace '<YOUR_API_TOKEN>' with your token.
client = ApifyClient("<YOUR_API_TOKEN>")

# Prepare the Actor input
run_input = {
    "apiKey": "",
    "apiBaseUrl": "",
    "messages": [{
            "role": "user",
            "content": "Hello, how are you?",
        }],
}

# Run the Actor and wait for it to finish
run = client.actor("gray0/fable-distiller").call(run_input=run_input)

# Fetch and print Actor results from the run's dataset (if there are any)
print("💾 Check your data here: https://console.apify.com/storage/datasets/" + run["defaultDatasetId"])
for item in client.dataset(run["defaultDatasetId"]).iterate_items():
    print(item)

# 📚 Want to learn more 📖? Go to → https://docs.apify.com/api/client/python/docs/quick-start

```

## CLI example

```bash
echo '{
  "apiKey": "",
  "apiBaseUrl": "",
  "messages": [
    {
      "role": "user",
      "content": "Hello, how are you?"
    }
  ]
}' |
apify call gray0/fable-distiller --silent --output-dataset

```

## MCP server setup

```json
{
    "mcpServers": {
        "apify": {
            "command": "npx",
            "args": [
                "mcp-remote",
                "https://mcp.apify.com/?tools=gray0/fable-distiller",
                "--header",
                "Authorization: Bearer <YOUR_API_TOKEN>"
            ]
        }
    }
}

```

## OpenAPI specification

```json
{
    "openapi": "3.0.1",
    "info": {
        "title": "Fable Distiller",
        "description": "Bundle the Claude Fable 5 system prompt and apply it to any LLM model via your own API key.",
        "version": "0.1",
        "x-build-id": "gCucRLNURkopLnCsW"
    },
    "servers": [
        {
            "url": "https://api.apify.com/v2"
        }
    ],
    "paths": {
        "/acts/gray0~fable-distiller/run-sync-get-dataset-items": {
            "post": {
                "operationId": "run-sync-get-dataset-items-gray0-fable-distiller",
                "x-openai-isConsequential": false,
                "summary": "Executes an Actor, waits for its completion, and returns Actor's dataset items in response.",
                "tags": [
                    "Run Actor"
                ],
                "requestBody": {
                    "required": true,
                    "content": {
                        "application/json": {
                            "schema": {
                                "$ref": "#/components/schemas/inputSchema"
                            }
                        }
                    }
                },
                "parameters": [
                    {
                        "name": "token",
                        "in": "query",
                        "required": true,
                        "schema": {
                            "type": "string"
                        },
                        "description": "Enter your Apify token here"
                    }
                ],
                "responses": {
                    "200": {
                        "description": "OK"
                    }
                }
            }
        },
        "/acts/gray0~fable-distiller/runs": {
            "post": {
                "operationId": "runs-sync-gray0-fable-distiller",
                "x-openai-isConsequential": false,
                "summary": "Executes an Actor and returns information about the initiated run in response.",
                "tags": [
                    "Run Actor"
                ],
                "requestBody": {
                    "required": true,
                    "content": {
                        "application/json": {
                            "schema": {
                                "$ref": "#/components/schemas/inputSchema"
                            }
                        }
                    }
                },
                "parameters": [
                    {
                        "name": "token",
                        "in": "query",
                        "required": true,
                        "schema": {
                            "type": "string"
                        },
                        "description": "Enter your Apify token here"
                    }
                ],
                "responses": {
                    "200": {
                        "description": "OK",
                        "content": {
                            "application/json": {
                                "schema": {
                                    "$ref": "#/components/schemas/runsResponseSchema"
                                }
                            }
                        }
                    }
                }
            }
        },
        "/acts/gray0~fable-distiller/run-sync": {
            "post": {
                "operationId": "run-sync-gray0-fable-distiller",
                "x-openai-isConsequential": false,
                "summary": "Executes an Actor, waits for completion, and returns the OUTPUT from Key-value store in response.",
                "tags": [
                    "Run Actor"
                ],
                "requestBody": {
                    "required": true,
                    "content": {
                        "application/json": {
                            "schema": {
                                "$ref": "#/components/schemas/inputSchema"
                            }
                        }
                    }
                },
                "parameters": [
                    {
                        "name": "token",
                        "in": "query",
                        "required": true,
                        "schema": {
                            "type": "string"
                        },
                        "description": "Enter your Apify token here"
                    }
                ],
                "responses": {
                    "200": {
                        "description": "OK"
                    }
                }
            }
        }
    },
    "components": {
        "schemas": {
            "inputSchema": {
                "type": "object",
                "required": [
                    "provider",
                    "model",
                    "apiKey",
                    "messages"
                ],
                "properties": {
                    "provider": {
                        "title": "LLM Provider",
                        "enum": [
                            "openai",
                            "anthropic",
                            "openrouter",
                            "custom"
                        ],
                        "type": "string",
                        "description": "Select your LLM provider."
                    },
                    "model": {
                        "title": "Model Name",
                        "type": "string",
                        "description": "Model name/ID (e.g., gpt-4o, claude-sonnet-4-20250514)."
                    },
                    "apiKey": {
                        "title": "API Key",
                        "type": "string",
                        "description": "Your API key for the chosen provider."
                    },
                    "apiBaseUrl": {
                        "title": "Custom API Base URL",
                        "type": "string",
                        "description": "Custom base URL (required for \"custom\" provider, e.g., https://my-endpoint.example.com/v1)."
                    },
                    "messages": {
                        "title": "Messages",
                        "type": "array",
                        "description": "Array of message objects with \"role\" and \"content\" fields (e.g., [{\"role\": \"user\", \"content\": \"Hello\"}])."
                    },
                    "maxTokens": {
                        "title": "Max Tokens",
                        "minimum": 1,
                        "maximum": 100000,
                        "type": "integer",
                        "description": "Maximum number of tokens in the response.",
                        "default": 4096
                    },
                    "temperature": {
                        "title": "Temperature",
                        "minimum": 0,
                        "maximum": 2,
                        "type": "number",
                        "description": "Temperature for response generation (0.0–2.0).",
                        "default": 1
                    }
                }
            },
            "runsResponseSchema": {
                "type": "object",
                "properties": {
                    "data": {
                        "type": "object",
                        "properties": {
                            "id": {
                                "type": "string"
                            },
                            "actId": {
                                "type": "string"
                            },
                            "userId": {
                                "type": "string"
                            },
                            "startedAt": {
                                "type": "string",
                                "format": "date-time",
                                "example": "2025-01-08T00:00:00.000Z"
                            },
                            "finishedAt": {
                                "type": "string",
                                "format": "date-time",
                                "example": "2025-01-08T00:00:00.000Z"
                            },
                            "status": {
                                "type": "string",
                                "example": "READY"
                            },
                            "meta": {
                                "type": "object",
                                "properties": {
                                    "origin": {
                                        "type": "string",
                                        "example": "API"
                                    },
                                    "userAgent": {
                                        "type": "string"
                                    }
                                }
                            },
                            "stats": {
                                "type": "object",
                                "properties": {
                                    "inputBodyLen": {
                                        "type": "integer",
                                        "example": 2000
                                    },
                                    "rebootCount": {
                                        "type": "integer",
                                        "example": 0
                                    },
                                    "restartCount": {
                                        "type": "integer",
                                        "example": 0
                                    },
                                    "resurrectCount": {
                                        "type": "integer",
                                        "example": 0
                                    },
                                    "computeUnits": {
                                        "type": "integer",
                                        "example": 0
                                    }
                                }
                            },
                            "options": {
                                "type": "object",
                                "properties": {
                                    "build": {
                                        "type": "string",
                                        "example": "latest"
                                    },
                                    "timeoutSecs": {
                                        "type": "integer",
                                        "example": 300
                                    },
                                    "memoryMbytes": {
                                        "type": "integer",
                                        "example": 1024
                                    },
                                    "diskMbytes": {
                                        "type": "integer",
                                        "example": 2048
                                    }
                                }
                            },
                            "buildId": {
                                "type": "string"
                            },
                            "defaultKeyValueStoreId": {
                                "type": "string"
                            },
                            "defaultDatasetId": {
                                "type": "string"
                            },
                            "defaultRequestQueueId": {
                                "type": "string"
                            },
                            "buildNumber": {
                                "type": "string",
                                "example": "1.0.0"
                            },
                            "containerUrl": {
                                "type": "string"
                            },
                            "usage": {
                                "type": "object",
                                "properties": {
                                    "ACTOR_COMPUTE_UNITS": {
                                        "type": "integer",
                                        "example": 0
                                    },
                                    "DATASET_READS": {
                                        "type": "integer",
                                        "example": 0
                                    },
                                    "DATASET_WRITES": {
                                        "type": "integer",
                                        "example": 0
                                    },
                                    "KEY_VALUE_STORE_READS": {
                                        "type": "integer",
                                        "example": 0
                                    },
                                    "KEY_VALUE_STORE_WRITES": {
                                        "type": "integer",
                                        "example": 1
                                    },
                                    "KEY_VALUE_STORE_LISTS": {
                                        "type": "integer",
                                        "example": 0
                                    },
                                    "REQUEST_QUEUE_READS": {
                                        "type": "integer",
                                        "example": 0
                                    },
                                    "REQUEST_QUEUE_WRITES": {
                                        "type": "integer",
                                        "example": 0
                                    },
                                    "DATA_TRANSFER_INTERNAL_GBYTES": {
                                        "type": "integer",
                                        "example": 0
                                    },
                                    "DATA_TRANSFER_EXTERNAL_GBYTES": {
                                        "type": "integer",
                                        "example": 0
                                    },
                                    "PROXY_RESIDENTIAL_TRANSFER_GBYTES": {
                                        "type": "integer",
                                        "example": 0
                                    },
                                    "PROXY_SERPS": {
                                        "type": "integer",
                                        "example": 0
                                    }
                                }
                            },
                            "usageTotalUsd": {
                                "type": "number",
                                "example": 0.00005
                            },
                            "usageUsd": {
                                "type": "object",
                                "properties": {
                                    "ACTOR_COMPUTE_UNITS": {
                                        "type": "integer",
                                        "example": 0
                                    },
                                    "DATASET_READS": {
                                        "type": "integer",
                                        "example": 0
                                    },
                                    "DATASET_WRITES": {
                                        "type": "integer",
                                        "example": 0
                                    },
                                    "KEY_VALUE_STORE_READS": {
                                        "type": "integer",
                                        "example": 0
                                    },
                                    "KEY_VALUE_STORE_WRITES": {
                                        "type": "number",
                                        "example": 0.00005
                                    },
                                    "KEY_VALUE_STORE_LISTS": {
                                        "type": "integer",
                                        "example": 0
                                    },
                                    "REQUEST_QUEUE_READS": {
                                        "type": "integer",
                                        "example": 0
                                    },
                                    "REQUEST_QUEUE_WRITES": {
                                        "type": "integer",
                                        "example": 0
                                    },
                                    "DATA_TRANSFER_INTERNAL_GBYTES": {
                                        "type": "integer",
                                        "example": 0
                                    },
                                    "DATA_TRANSFER_EXTERNAL_GBYTES": {
                                        "type": "integer",
                                        "example": 0
                                    },
                                    "PROXY_RESIDENTIAL_TRANSFER_GBYTES": {
                                        "type": "integer",
                                        "example": 0
                                    },
                                    "PROXY_SERPS": {
                                        "type": "integer",
                                        "example": 0
                                    }
                                }
                            }
                        }
                    }
                }
            }
        }
    }
}
```
