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RunBoth

Runs both versions of a Python refactor on generated inputs and reports which functions behave differently.

Actively maintained

Developer toolsFor developers
runboth.dev ↗
Open runboth.devAlternativesSet it up for my teamIs RunBoth yours? Claim the card →
At a glanceswept Oct 14, 2026

143 installs/mo

Emerging

For
Python developers checking whether a refactor or commit changed behaviour, especially without a test suite
Activity
Actively maintainedrelease 5 weeks ago · site updated 6 weeks ago
Used for
  • compare old and new function versions on generated inputs
  • catch callers broken by a changed helper function
  • check LLM-written refactors preserve behaviour before committing
Worth knowingcomputed from what we read · each with its source
Your datawhat they publish, each line with its page · read Oct 15, 2026

These are RunBoth's own statements, read from its pages. We did not audit them. A line that is missing was not found on the pages we read; it does not mean the practice is absent.

How a program reaches itfound, not claimed · read Oct 15, 2026
  • MCP serverdev.runboth/agentverified in the MCP registry
  • Stateanswers, 3 toolschecked 2026-10-15
  • Address to connectrunboth-agent-mgbxvs4loq-uc.a.run.app/mcp

MCP server details →

This card as JSON, for your agent →

Each line is something a program found when it went looking: the registry entry, the server's own answer, a spec that parses. A missing line means we did not find it, not that it does not exist.

Alternatives in Developer toolsby use, among tools still maintained

Figure and bar: visits/mo, estimate · year: online since

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Questions this page answers
  • What is RunBoth?

    Runs both versions of a Python refactor on generated inputs and reports which functions behave differently. It is listed in the Atlas under Developer tools.

  • Who is RunBoth for?

    Python developers checking whether a refactor or commit changed behaviour, especially without a test suite

  • Do people use RunBoth?

    Emerging: 143 installs/mo (pypi).

  • Is RunBoth still maintained?

    Actively maintained: release 5 weeks ago · site updated 6 weeks ago.

  • What are alternatives to RunBoth?

    In Developer tools, by use: TestMu AI (Formerly LambdaTest), Drizz, Mabl, Ito, Logic, Inc., Shift-Left API.

How we read a tool

No votes, no reviews, no vendor claims. Every week a crawler reads each tool's own site and a few public registries, and the words on the card are bands over what it read.

  • Use: visits to the site (estimated), installs from npm and PyPI, presence in Chrome's usage report.
  • Activity: the newest release on GitHub, npm or PyPI; the newest dated page on the site; open roles on a public jobs board.
  • Price: the vendor's own pricing page, read with the date. A figure is printed only when it is on that page.
  • The line and the use cases are written by us from the homepage, one tool at a time, and refused when they repeat the vendor's marketing.

How AI assistants read each site — the reading vendors ask us about — is on each tool's own visibility page.

How we read every tool → · By INITE Atlas Desk