nlohmann/json

Maintenance

Active

Human commits, 30 days

194

Human commits, 90 days

275

Human commits, 365 days

371

Bot share of commits, 365 days

26%

Last commit

Oct 13, 2026 (1 day ago)

Last human commit

Oct 13, 2026 (1 day ago)

Authors, 90 days

31

Last release

Apr 11, 2025 (1 year ago)

Median PR merge time

8 hours

Responsiveness: of 9 recent issues, 100% got a maintainer reply. Median first response: 7 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

Owner

Personal account

Commits sampled

370 since Oct 14, 2025

Authors for half of commits

1

Authors for 80% of commits

2

Contributors

354

Top committers

• nlohmann: 79% of commits
• Angadi56: 2% of commits
• banaboi: 1% of commits
• ssam18: 1% of commits
• drcosmin: 1% of commits

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

Sources: Commits, Contributors

Stars

Organic, confidence high

Bursts

• Mar 2, 2015 to Mar 4, 2015: about 48 more stars than usual, peak 32 in one day, a spike that tapers off. We couldn't check for an outside explanation.
• Mar 26, 2015 to Mar 28, 2015: about 83 more stars than usual, peak 59 in one day, a spike that tapers off. Outside explanation: a jump in forks.
• Dec 28, 2015 to Dec 30, 2015: about 200 more stars than usual, peak 97 in one day, a spike that tapers off. Outside explanation: a jump in forks, a jump in issues and pull requests.
• Jan 30, 2017 to Jan 31, 2017: about 48 more stars than usual, peak 33 in one day, a spike that tapers off. Outside explanation: a jump in forks, a jump in issues and pull requests.
• Dec 17, 2017 to Dec 21, 2017: about 258 more stars than usual, peak 131 in one day, a spike that tapers off. Outside explanation: a jump in forks, a jump in issues and pull requests.
• Feb 2, 2018 to Feb 3, 2018: about 74 more stars than usual, peak 72 in one day, a spike that tapers off. Outside explanation: a jump in forks, a jump in issues and pull requests.
• Sep 29, 2019 to Oct 2, 2019: about 298 more stars than usual, peak 246 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.
• Jun 16, 2020 to Jun 17, 2020: about 106 more stars than usual, peak 101 in one day, a spike that tapers off. Outside explanation: a jump in forks, a jump in issues and pull requests.
• Jul 28, 2020 to Jul 30, 2020: about 98 more stars than usual, peak 83 in one day, a spike that tapers off. Outside explanation: a jump in forks, a jump in issues and pull requests.
• Oct 28, 2020 to Oct 30, 2020: about 178 more stars than usual, peak 95 in one day, a spike that tapers off. No outside explanation found, so this burst is unexplained.
• Nov 20, 2020 to Nov 22, 2020: about 194 more stars than usual, peak 99 in one day, a flat block of stars. No outside explanation found, so this burst is unexplained.
• Dec 8, 2020 to Dec 13, 2020: about 448 more stars than usual, peak 102 in one day, a flat block of stars. Outside explanation: a jump in issues and pull requests.
• Apr 14, 2021 to Apr 17, 2021: about 180 more stars than usual, peak 94 in one day, a spike that tapers off. No outside explanation found, so this burst is unexplained.
• Aug 18, 2021 to Aug 20, 2021: about 279 more stars than usual, peak 161 in one day, a spike that tapers off. Outside explanation: a jump in issues and pull requests.
• Sep 4, 2021 to Sep 4, 2021: about 83 more stars than usual, peak 99 in one day, a spike that tapers off. No outside explanation found, so this burst is unexplained.
• Oct 9, 2021 to Oct 11, 2021: about 110 more stars than usual, peak 93 in one day, a spike that tapers off. Outside explanation: a jump in issues and pull requests.
• Jan 1, 2022 to Jan 1, 2022: about 70 more stars than usual, peak 82 in one day, a spike that tapers off. Outside explanation: a jump in issues and pull requests.
• Apr 9, 2022 to Apr 12, 2022: about 117 more stars than usual, peak 81 in one day, a spike that tapers off. Outside explanation: a jump in issues and pull requests.
• Aug 11, 2023 to Aug 12, 2023: about 53 more stars than usual, peak 41 in one day, a spike that tapers off. Outside explanation: a jump in issues and pull requests.
• Sep 7, 2023 to Sep 8, 2023: about 66 more stars than usual, peak 67 in one day, a spike that tapers off. Outside explanation: a jump in issues and pull requests.
• Nov 28, 2023 to Dec 5, 2023: about 431 more stars than usual, peak 99 in one day, a shape we can't classify. Outside explanation: a jump in issues and pull requests.
• Apr 9, 2024 to Apr 14, 2024: about 217 more stars than usual, peak 78 in one day, a spike that tapers off. Outside explanation: a jump in issues and pull requests.
• Oct 17, 2024 to Oct 22, 2024: about 250 more stars than usual, peak 90 in one day, a spike that tapers off. Outside explanation: a jump in issues and pull requests.

• The star history was reset at some point, so earlier stars aren't counted.
• 2 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.
• The star history has a zero run of 26 weeks or more, so the analysis starts after it.

Sources: How star history is analyzed

Risk

Flags

No risk flags.

License

Now

MIT (OSI-approved)

A year ago

Not known

Packages

No published packages found.

OpenSSF Scorecard: 8.9 out of 10 (via deps.dev).

Sources: GitHub: nlohmann/json