pybind/pybind11
What happens to a stranger's pull request here, in the Porchlamp snapshot of 17 October 2026.
Outside pull requests to pybind/pybind11 got a first human reply in a median of 35.2 hours (33 pull requests, 11 April to 8 October 2026); 24% got none within 14 days. It ranks 625 of 3,219 overall. For first-time contributors it ranks 668 of 1,525 (the top 44%).
| Rank | 625 of 3,219 |
|---|---|
| Score | 58.52 |
| Tier | B |
| Median first reply | 35.2 hours |
| 14-day no-reply share | 24% |
| First-timer rank | 668 of 1,525 |
| Ecosystem | C and C++ |
| Window | 11 April to 8 October 2026 |
Composite
- Rank
- 625 of 3,219
- Score
- 58.52
- Tier
- B
- Coverage
- 100% · Full
- Quadrant
- Sweet Spot
Coordinates: leverage 56.0 (coverage 100%), friction 36.5 (coverage 100%)
Five pillars
| Pillar | Score | Coverage |
|---|---|---|
| Responsiveness | 77.4 | 100% |
| Criticality | 49.9 | 100% |
| Governance | 59.3 | 100% |
| Rigor | 64.1 | 100% |
| Accessibility | 35.0 | 100% |
The measured parameters
Responsiveness
| Parameter | Value | Score | Count | Window | Source |
|---|---|---|---|---|---|
| Decision Rate (90d)Share of outside pull requests that were merged or closed within 90 days. | 83.3% | 100.0 | 12 | 11 April to 10 July 2026 | primaryraw/pr_window/pybind__pybind11.json |
| PR Ghost Rate (14d)Share of outside pull requests with no maintainer response, merge or close within 14 days. | 24.0% | 52.0 | 25 | 20 April to 17 October 2026 | primaryraw/pr_window/pybind__pybind11.json |
| First-timer Merge RateShare of first-time outside authors' decided pull requests that were merged. | 92.3% | 100.0 | 13 | — | primaryraw/author_history/pybind__pybind11.json |
| Time to First ResponseMedian hours from an outside pull request opening to its first substantive human reply. | 35.2 hours (1.5 days) | 61.2 | 33 | 11 April to 8 October 2026 | primaryraw/pr_window/pybind__pybind11.json |
| Time to Merge (p90)Hours within which 90% of merged outside pull requests were merged. | 260.1 hours (10.8 days) | 62.0 | 35 | 11 April to 8 October 2026 | primaryraw/pr_window/pybind__pybind11.json |
Criticality
| Parameter | Value | Score | Count | Window | Source |
|---|---|---|---|---|---|
| DependentsPackages in the registry that depend on this project, counted once each. | Not shown: Not applicable | ||||
| Monthly DownloadsDownloads from the package registry in a month. | Not shown: Not applicable | ||||
| OpenSSF CriticalityOpenSSF criticality score from 0 to 1, computed from the project's public activity signals. | 0.4988 | 49.9 | — | — | proxy:no_dependents_signalraw/github_meta/pybind__pybind11.json |
Governance
| Parameter | Value | Score | Count | Window | Source |
|---|---|---|---|---|---|
| Elephant FactorThe fewest organisations that account for half of the last year's commits. | 2 | 50.0 | 142 | — | primaryraw/commits_365d/pybind__pybind11.json |
| Legal IP RegimeThe contributor licence regime: DCO, none, a foundation CLA or a corporate CLA. | No CLA or sign-off found | 85.0 | — | — | primaryraw/governance/pybind__pybind11.json |
| Promotion LadderHow openly a contributor can become a maintainer, from closed to verified. | No written path to becoming a maintainer | 40.0 | — | — | primaryraw/governance/pybind__pybind11.json |
Rigor
| Parameter | Value | Score | Count | Window | Source |
|---|---|---|---|---|---|
| AI Policy PostureWhether the project has a written policy on AI-assisted contributions. | Written AI policy | 95.0 | — | — | primaryraw/governance/pybind__pybind11.json |
| Pipeline DefensesHow well the project's build and review pipeline defends against bad changes, 0 to 100. | 62.5 | 62.5 | — | — | primaryraw/scorecard/pybind__pybind11.json |
| Substantive Review RateShare of decided pull requests that received a substantive review. | 28.2% | 35.3 | 39 | 11 April to 8 October 2026 | primaryraw/pr_window/pybind__pybind11.json |
Accessibility
| Parameter | Value | Score | Count | Window | Source |
|---|---|---|---|---|---|
| Developer ExperienceDeveloper experience, 0 to 100: half CI run time, half setup signals. | 0 | 0.0 | 13 | — | primaryraw/actions_runs/pybind__pybind11.json |
| Newcomer ConversionShare of first-time authors whose first pull request merged within 180 days. | 58.3% | 100.0 | 12 | — | primaryraw/author_history/pybind__pybind11.json |
| Newcomer Issue SupplyOpen, unassigned, up-to-date issues marked for newcomers. | 0 | 0.0 | — | — | primaryraw/gfi/pybind__pybind11.json |
| Newcomer Return RateShare of those merged first-time authors who sent a second pull request within 90 days. | 0.0% | 0.0 | 7 | — | primaryraw/author_history/pybind__pybind11.json |
Persona view
| Persona | Rank | Score | Tier | Status |
|---|---|---|---|---|
| Balanced | 625 of 3,219 | 58.52 | B | Rated |
| First-timer | 668 of 1,525 | 57.86 | B | Rated |
| Career capital | This repository's production-criticality signal is not yet high enough for career-capital ranking. | |||
| Senior systems | Fewer than 3 organizations account for most commits (not multi-vendor). | |||
| AI-assisted | 606 of 3,696 | 60.26 | B | Rated |
Integrity
- Snapshot
- 2026-10-17
- Raw hash
- de85750b830b1637147d78a2d74f3a1a63d021bc792af9a170eee442c552e05c
No suspicion flags on this repository.
The full record is in data/2026-10-17/repos/2c.json, under the key pybind/pybind11.
How every number is measured: Porchlamp methodology.
Open an issue about this record and say what looks wrong.
Porchlamp (2026). pybind/pybind11. Snapshot 2026-10-17. https://porchlamp.org/projects/pybind/pybind11/. CC BY 4.0.
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