# Documentation Search Tools

Use the `search_*` tools to search OneTick documentation by topic or natural language question. Each tool covers a different documentation set; pass a query string and get back the most relevant passages.

## Tool descriptions

| MCP Tool                 | When to use                                                                                                                   |
|--------------------------|-------------------------------------------------------------------------------------------------------------------------------|
| `search_python-docs`     | Search the onetick-py library API reference. Use when looking up classes, methods,parameters, or return types.           |
| `search_python-examples` | Search practical onetick-py usage examples. Use when looking for how to accomplish aspecific task with the library.      |
| `search_cloud_coverage`  | Search OneTick Cloud coverage documentation. Use when checking which exchanges,instruments, or data types are available. |
| `search_sql-docs`        | Search OneTick SQL documentation. Use when constructing SQL queries or looking upSQL syntax and built-in functions.      |



## Data source

Each `search_*` tool is backed by a named *collection* — a document set indexed from a documentation source. OneTick Cloud users get the bundled collections out of the box (see `Download documentation sources`). For custom deployments, additional collections can be added — see `Custom Search Tools`.

| MCP Tool                 | Collection name   | Content                     |
|--------------------------|-------------------|-----------------------------|
| `search_python-docs`     | `python-docs`     | onetick-py library API docs |
| `search_python-examples` | `python-examples` | Practical usage examples    |
| `search_cloud_coverage`  | `cloud`           | OneTick Cloud coverage docs |
| `search_sql-docs`        | `sql-docs`        | OneTick SQL documentation   |

The active set of collections is controlled by the `COLLECTIONS` setting — see `Active collections`.



## Active collections

The `COLLECTIONS` setting controls which `search_*` tools are registered. The default corresponds to the OneTick documentation sources indexed during the quickstart:

```
COLLECTIONS='["python-docs","python-examples","cloud","sql-docs"]'
```

To disable individual tools, start from the default and remove the collections you don’t need. For example, to disable `sql-docs`:

```
COLLECTIONS='["python-docs","python-examples","cloud"]'
```

To add your own documentation sources, see `Custom Search Tools`.