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Project Gumball

Exposes fifteen small pure-function developer tools, such as cron translation and regex explanation, through a web page, JSON API and MCP server.

Actively maintained

Developer toolsFor developers
gumballtools.com ↗
Open gumballtools.comAlternativesSet it up for my teamIs Project Gumball yours? Claim the card →
At a glanceswept Oct 23, 2026

≈ 3visits/mo

Little sign of use · estimate, read Oct 13, 2026

For
Developers and AI agents who need small utility tools such as cron, regex, and timezone checks
Activity
Actively maintainedsite updated 3 days ago
Runs as
API
Used for
  • Check whether a regex can hang on backtracking
  • Convert times across zones and flag nonexistent local times
Worth knowingcomputed from what we read · each with its source
How a program reaches itfound, not claimed · read Oct 20, 2026
  • MCP servercom.gumballtools/amortizeverified in the MCP registry
  • Stateanswers, 1 toolschecked 2026-10-20
  • Address to connectamortize.gumballtools.com/api/mcp
  • OpenAPI spec1 pathsthe spec ↗
  • API docsgumballtools.com/api/v1/toolsthe vendor's page ↗
  • MCP docsgumballtools.com/docsthe vendor's page ↗

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 Project Gumball?

    Exposes fifteen small pure-function developer tools, such as cron translation and regex explanation, through a web page, JSON API and MCP server. It is listed in the Atlas under Developer tools.

  • Who is Project Gumball for?

    Developers and AI agents who need small utility tools such as cron, regex, and timezone checks

  • Do people use Project Gumball?

    Little sign of use: ≈ 3 visits/mo · estimate, 2026-10.

  • Is Project Gumball still maintained?

    Actively maintained: site updated 3 days ago.

  • What are alternatives to Project Gumball?

    In Developer tools, by use: dev101.io.

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