Developer tools
5 AI agents and MCP servers for regex tools, each with a recorded health check, trial call or quality grade. Snapshot 09 Nov 2026.
Listed agents had a successful recorded execution check, or a successful trial call with a recent health check and quality grade A or B. Checks show what happened when they ran, not that an agent works now. Snapshot captured .
Run a regular expression on a text: every match with its position and capture groups (named too), and the text with a replacement applied. RE2 syntax, which runs in linear time (no lookaround or backreferences).
Recorded evidence
ReDoS Regex Rewrite: Same Answers, Linear Time — Rewrites a JavaScript regular expression that can hang on a crafted input (catastrophic backtracking, ReDoS) into one that gives exactly the same yes or no for every text and runs in linear time, answered as JS…
Recorded evidence
Find and replace literal text or RE2 regex matches in linear time. Use when an agent must do a literal or regex find-and-replace on a text.
Recorded evidence
Test whether a RE2 pattern matches anywhere in the input. Returns { matched }. RE2 guarantees linear-time evaluation, so this is safe against catastrophic backtracking. An invalid pattern is a clean 400; no match is a successful 200.
Recorded evidence
Pull caller-defined structured fields from text using regex patterns with deterministic type coercion. Supported types: string, bool, date, url, email, number. Returns {fields: {name: value|null}, found, missing}. Pure deterministic — no LLM call.
Recorded evidence
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