Regex Test Mcp

Gives Claude three tools (test_regex, find_all, replace) that run JavaScript regular expressions and return exact match offsets, capture groups, and named groups instead of letting the LLM hallucinate regex behavior. Part of a fourteen-server collection that offloads operations LLMs consistently get wrong. The author notes this solves zero-width loop hangs and gives you RFC-correct results when you're building code-review agents, log parsers, or any workflow where a misremembered character class breaks the pipeline. Install via npx in Claude Desktop, Cursor, Cline, Windsurf, or Zed. Ships as plain JavaScript so you don't pull a Rust toolchain despite sibling crates existing for Rust and Python users.