colinhacks/zod

TypeScript-first schema validation with static type inference

44.1k stars · 2.3k forks · TypeScript

Caution

Caution: one person wrote most of the recent commits.

Why

One person wrote 72% of human commits in the last year, so the project depends on them continuing. (source 1, source 2)

What would change this

A second person takes a substantial share of commits.
Partly checked: maintenance (Commit counts are estimated: the commit sample stops before the window start, so GitHub's totals were scaled by the sampled bot share.)

Maintenance

Partial

Active

Human commits, 30 days: 16
Human commits, 90 days: 310
Human commits, 365 days: 577
Bot share of commits, 365 days: 3%
Last commit: Oct 13, 2026 (1 day ago)
Last human commit: Oct 13, 2026 (1 day ago)
Authors, 90 days: 57
Last release: Oct 12, 2026 (2 days ago)
Median PR merge time: 1 hour

Responsiveness: of 29 recent issues, 83% got a maintainer reply. Median first response: 28 hours.

Commit counts are estimated: the commit sample stops before the window start, so GitHub's totals were scaled by the sampled bot share.

Sources: Commits, Releases, Merged pull requests, Issues

People

Complete

Owner: Personal account
Commits sampled: 485 since Oct 14, 2025
Authors for half of commits: 1
Authors for 80% of commits: 17
Contributors: 462

Top committers

colinhacks: 72% of commits
dokson: 2% of commits
Deepshekhar Das: 1% of commits
zirkelc: 1% of commits
Abdalrhman-Almarakeby: 0% of commits

Shares come from the newest sampled commits, since the commit sample is capped.

Sources: Commits, Contributors

Stars

Complete

Organic, confidence high

Bars show stars gained each week. Orange bars overlap a burst.

Bursts

Jul 13, 2020 to Jul 14, 2020: about 47 more stars than usual, peak 40 in one day, a spike that tapers off. Outside explanation: a jump in issues and pull requests.
Dec 14, 2021 to Dec 15, 2021: about 122 more stars than usual, peak 106 in one day, a spike that tapers off. Outside explanation: a jump in forks.
Jun 16, 2022 to Jun 22, 2022: about 273 more stars than usual, peak 104 in one day, a spike that tapers off. Outside explanation: a jump in forks, a jump in issues and pull requests.
Nov 26, 2022 to Dec 1, 2022: about 390 more stars than usual, peak 168 in one day, a shape we can't classify. Outside explanation: a jump in forks, a jump in issues and pull requests.
Dec 12, 2022 to Dec 15, 2022: about 362 more stars than usual, peak 154 in one day, a flat block of stars. Outside explanation: a jump in forks, a jump in issues and pull requests.
Apr 11, 2025 to Apr 14, 2025: about 392 more stars than usual, peak 172 in one day, a spike that tapers off. Outside explanation: a jump in forks, a jump in issues and pull requests.
May 19, 2025 to May 22, 2025: about 250 more stars than usual, peak 139 in one day, a spike that tapers off. Outside explanation: a Hacker News post, a jump in forks, a jump in issues and pull requests.
Jul 5, 2026 to Jul 6, 2026: about 61 more stars than usual, peak 41 in one day, a spike that tapers off. Outside explanation: a jump in forks, a jump in issues and pull requests.
Aug 30, 2026 to Sep 4, 2026: about 235 more stars than usual, peak 117 in one day, a spike that tapers off. Outside explanation: a jump in forks, a jump in issues and pull requests.

5 stars GitHub has since removed (tracked since Oct 13, 2026).

Anyone can buy stars for any repo; bursts alone don't prove the owner did.

The star history looks organic.

Sources: How star history is analyzed

Risk

Complete

Flags

No risk flags.

License

Now: MIT (OSI-approved)
A year ago: MIT (OSI-approved)

Packages

No published packages found.

OpenSSF Scorecard: 5.1 out of 10 (via deps.dev).

Sources: GitHub: colinhacks/zod

Badge

Add this to a README to show the current verdict:

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Earlier verdicts

Oct 14, 2026: Caution
Oct 13, 2026: Caution
Oct 13, 2026: Caution

Computed 15 hours ago · method 2026.10.2