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Regex Test MCP server

by MukundaKatta·io.github.MukundaKatta/regex-test-mcp·v0.1.0
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Trustworthy JS regex testing. Real offsets, named groups, safe against zero-width loops.

A92/100grade A
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Safety scan
A92/100

full report

Adoption
New

0 stars17 downloads/wk

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If you have run it, two minutes of your experience saves the next person an afternoon.

Regex Test tools (3)

write = sends, deletes, buys or posts

Read from the package source without running it. The installed server may list more.

  • find_all

    Find every non-overlapping match of a pattern in a string. Always behaves as if the 'g' flag is set. Returns a list of {match, start, end, groups, named_groups} entries plus a count. Safe against zero-width matches (won't infinite-loop).

  • replace

    Replace every match of a pattern with a replacement string. Replacement supports JS replace syntax: $1 / $2 for positional groups, $<name> for named groups, $& for the whole match. Returns the new string and a 'replaced' boolean.

  • test_regex

    Test a regex pattern against a string and return the first match (or 'matched: false'). Returns the match text, start/end byte offsets, positional groups, and named groups. Use when you need to confirm whether a pattern matches before generating downstream output.

Public scan report

scanner v0.1.9 · 2026-09-27 · same rubric, same numbers if you re-run it

no findings
  • Code scan3 source files scanned25/25
  • –Live reliabilityno gateway calls yet and no remote to proben/a
  • –Tool poisoningtools not inspected (local package is not executed); not countedn/a
  • Auth qualitylocal package, no credentials required12/15
  • Maintenancelast push 29 days ago15/15
  • Maintainer identityregistry namespace matches repository owner; GitHub account older than a year8/10
Overall 92/100. Components that don't apply are left out of the denominator. Any critical finding is an F.RubricAppeal a findingJSON

How Regex Test compares

Against every graded MCP server, from our own scans and uptime checks. Updated after each scan run.

Safety score
92/100
higher than 90% of 48,273 servers
Tools
3
the typical server has 7
Tools that change things
0%
typical: 0%. Fewer write tools means less an agent can break
Downloads a week
17
more than 5% of 11,915 servers with a package

What its tools let an agent do: 2 read · 1 change

Install Regex Test in Claude Code, Cursor or VS Code

Runs npx -y @mukundakatta/regex-test-mcp on your machine. Read the scan report first; the gateway never runs local packages.

claude mcp add regex-test-mcp -- npx -y @mukundakatta/regex-test-mcp
Add to Cursor

What the publisher says

From the Regex Test repository's README, as published. We do not edit it. Read it on GitHub

mcp-stack

Fourteen small MCP servers for everyday LLM / RAG / agent work. Each ships independently on npm, listed in the official MCP Registry, and is callable from Claude Desktop, Cursor, Cline, Windsurf, Zed, and any other MCP-compatible client.

RAG / agent helpers

Reliable transforms LLMs reach for tools instead of imagining

Sibling libraries

The first four wrap or re-implement logic from the user's Rust + Python work:

ragdrift-py (PyPI) — five-dimensional drift detection

  • ragdrift (crates.io) /

stopstream, citecite, ragmetric — pure-Rust crates from the rust-llm-stack workspace

  • embedrank, promptbudget,

The MCP servers are independent: they implement the logic they need in plain JavaScript so installing them doesn't pull a Rust toolchain.

Install (any of them)

Add to your MCP client config. Example for Claude Desktop:

Shortened. The full README is on GitHub.

Nothing above is checked by us. What we check is on the safety report.

Regex Test: common questions

Is Regex Test MCP server safe?
Yes, by our scan: it is graded A (92/100). Read the Regex Test safety report
How do I install Regex Test?
It runs on your machine. Copy the Claude Code, Cursor, VS Code or Claude Desktop config from the install section.
Does Regex Test need an API key?
Not as far as the registry entry and our scan can tell: no credentials are declared or required.
Is Regex Test maintained?
The last commit was 65 days ago (2026-08-29). The latest release is v0.1.0.
What can I use instead of Regex Test?
Servers from other publishers that do the same job: Keploy MCP server.
How does Regex Test compare with other MCP servers?
safety score 92/100 (higher than 90% of 48,273 servers); tools 3 (the typical server has 7); tools that change things 0% (typical: 0%. Fewer write tools means less an agent can break). Full comparison.

Alternatives to Regex Test

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