fastmcp/docs/python-sdk/fastmcp-server-transforms-search-regex.mdx
marvin-context-protocol[bot] 8af9ceb338 Publish FastMCP v4.1.0 docs
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---
title: regex
sidebarTitle: regex
---
# `fastmcp.server.transforms.search.regex`
Regex-based search transform.
## Classes
### `RegexSearchTransform` <sup><a href="https://github.com/PrefectHQ/fastmcp/blob/main/fastmcp_slim/fastmcp/server/transforms/search/regex.py#L16" target="_blank"><Icon icon="github" style="width: 14px; height: 14px;" /></a></sup>
Search transform using regex pattern matching.
Tools are matched against their name, description, and parameter
information using Pydantic's Rust regex engine with case-insensitive
matching. Lookarounds and backreferences are not supported.