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

# fast • AI Agent SDK

> Fast Context module for rapid parallel code search.

# fast

<Badge color="blue">AI Agent</Badge>

Fast Context module for rapid parallel code search.

This module implements a specialized subagent that retrieves relevant code
from a codebase using parallel tool calls, similar to Windsurf's Fast Context.

Key features:

* Parallel tool execution (up to 8 concurrent calls)
* Limited serial turns (max 4) for fast response
* Restricted tool set (grep, glob, read) for safety
* Returns files + line ranges (no summarization)

Optional optimizations (no performance impact when disabled):

* Ripgrep backend: Use `search_backend='ripgrep'` for faster grep
* Async file I/O: Uses aiofiles if installed
* Incremental indexing: Use `enable_indexing=True`
* Context compression: Use `compression='truncate'` or `compression='smart'`

## Import

```python theme={"theme":{"light":"vitesse-light","dark":"vitesse-dark"}}
from praisonaiagents.context import fast
```