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Extensions are defined by files named `script.py` inside subfolders of `text-generation-webui/extensions`. They are invoked with the `--extensions` flag.
Extensions are defined by files named `script.py` inside subfolders of `text-generation-webui/extensions`. They are loaded at startup if specified with the `--extensions` flag.
For instance, `extensions/silero_tts/script.py` gets invoked with `python server.py --extensions silero_tts`.
For instance, `extensions/silero_tts/script.py` gets loaded with `python server.py --extensions silero_tts`.
## [text-generation-webui-extensions](https://github.com/oobabooga/text-generation-webui-extensions)
@ -29,7 +29,11 @@ Most of these have been created by the extremely talented contributors that you
## How to write an extension
`script.py` has access to all variables in the UI through the `modules.shared` module, and it may define the following functions:
script.py may define the special functions and variables below.
#### Predefined functions
The following functions may be defined in `script.py`:
| Function | Description |
|-------------|-------------|
@ -38,7 +42,7 @@ Most of these have been created by the extremely talented contributors that you
| `def custom_js()` | Returns custom javascript as a string. |
| `def input_modifier(string)` | Modifies the input string before it enters the model. In chat mode, it is applied to the user message. Otherwise, it is applied to the entire prompt. |
| `def output_modifier(string)` | Modifies the output string before it is presented in the UI. In chat mode, it is applied to the bot's reply. Otherwise, it is applied to the entire output. |
| `def state_modifier(state)` | Modifies the dictionary containing the input parameters before it is used by the text generation functions. |
| `def state_modifier(state)` | Modifies the dictionary containing the UI input parameters before it is used by the text generation functions. |
| `def bot_prefix_modifier(string)` | Applied in chat mode to the prefix for the bot's reply (more on that below). |
| `def custom_generate_reply(...)` | Overrides the main text generation function. |
| `def custom_generate_chat_prompt(...)` | Overrides the prompt generator in chat mode. |
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#### `params` dictionary
`script.py` may contain a special dictionary called `params`:
```python
params = {
"display_name": "Google Translate",
@ -58,9 +60,9 @@ params = {
}
```
In this dictionary, `display_name` is used to define the displayed name of the extension inside the UI, and `is_tab` is used to define whether the extension's `ui()` function should be called in a new `gr.Tab()` that will appear in the header bar. By default, the extension appears at the bottom of the "Text generation" tab.
`display_name` is used to define the displayed name of the extension in the UI, and `is_tab` is used to define whether the extension should appear in a new tab. By default, extensions appear at the bottom of the "Text generation" tab.
Additionally, `params` may contain variables that you want to be customizable through a `settings.json` file. For instance, assuming the extension is in `extensions/google_translate`, the variable `language string` below
Additionally, `params` may contain variables that you want to be customizable through a `settings.json` file. For instance, assuming the extension is in `extensions/google_translate`, the variable `language string` below:
```python
params = {