official-stockfish/Stockfish
What happens to a stranger's pull request here, in the Porchlamp snapshot of 17 October 2026.
Outside pull requests to official-stockfish/Stockfish got a first human reply in a median of 1.8 hours (153 pull requests, 11 April to 8 October 2026); 46% got none within 14 days. It ranks 1,284 of 3,219 overall. It is not ranked for first-time contributors: not enough evidence to show under this lens.
| Rank | 1,284 of 3,219 |
|---|---|
| Score | 53.06 |
| Tier | C |
| Median first reply | 1.8 hours |
| 14-day no-reply share | 46% |
| First-timer rank | Not enough evidence to show under this lens. |
| Ecosystem | C and C++ |
| Window | 11 April to 8 October 2026 |
Composite
- Rank
- 1,284 of 3,219
- Score
- 53.06
- Tier
- C
- Coverage
- 78% · Ceiling B
- Quadrant
- Nursery
Coordinates: leverage 49.7 (coverage 93%), friction 36.9 (coverage 65%)
Five pillars
| Pillar | Score | Coverage |
|---|---|---|
| Responsiveness | 80.3 | 70% |
| Criticality | 54.0 | 100% |
| Governance | 72.3 | 65% |
| Rigor | 27.4 | 100% |
| Accessibility | 6.0 | 50% |
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. | 97.7% | 100.0 | 128 | 11 April to 10 July 2026 | primaryraw/pr_window/official-stockfish__Stockfish.json |
| PR Ghost Rate (14d)Share of outside pull requests with no maintainer response, merge or close within 14 days. | 45.9% | 8.3 | 242 | 20 April to 17 October 2026 | primaryraw/pr_window/official-stockfish__Stockfish.json |
| First-timer Merge RateShare of first-time outside authors' decided pull requests that were merged. | Not shown: Collector failure | ||||
| Time to First ResponseMedian hours from an outside pull request opening to its first substantive human reply. | 1.8 hours (0.1 days) | 100.0 | 153 | 11 April to 8 October 2026 | primaryraw/pr_window/official-stockfish__Stockfish.json |
| Time to Merge (p90)Hours within which 90% of merged outside pull requests were merged. | Not shown: Insufficient sample size | ||||
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. | 0.5398 | 54.0 | — | — | proxy:no_dependents_signalraw/github_meta/official-stockfish__Stockfish.json |
Governance
| Parameter | Value | Score | Count | Window | Source |
|---|---|---|---|---|---|
| Elephant FactorThe fewest organisations that account for half of the last year's commits. | 5 | 100.0 | 462 | — | primaryraw/commits_365d/official-stockfish__Stockfish.json |
| Legal IP RegimeThe contributor licence regime: DCO, none, a foundation CLA or a corporate CLA. | Not shown: Collector failure | ||||
| Promotion LadderHow openly a contributor can become a maintainer, from closed to verified. | No written path to becoming a maintainer | 40.0 | — | — | primaryraw/governance/official-stockfish__Stockfish.json |
Rigor
| Parameter | Value | Score | Count | Window | Source |
|---|---|---|---|---|---|
| AI Policy PostureWhether the project has a written policy on AI-assisted contributions. | No written AI policy | 40.0 | — | — | primaryraw/governance/official-stockfish__Stockfish.json |
| Pipeline DefensesHow well the project's build and review pipeline defends against bad changes, 0 to 100. | 22.5 | 22.5 | — | — | primaryraw/scorecard/official-stockfish__Stockfish.json |
| Substantive Review RateShare of decided pull requests that received a substantive review. | 17.2% | 21.4 | 268 | 11 April to 8 October 2026 | primaryraw/pr_window/official-stockfish__Stockfish.json |
Accessibility
| Parameter | Value | Score | Count | Window | Source |
|---|---|---|---|---|---|
| Developer ExperienceDeveloper experience, 0 to 100: half CI run time, half setup signals. | 20 | 20.0 | 30 | — | primaryraw/actions_runs/official-stockfish__Stockfish.json |
| Newcomer ConversionShare of first-time authors whose first pull request merged within 180 days. | Not shown: Collector failure | ||||
| Newcomer Issue SupplyOpen, unassigned, up-to-date issues marked for newcomers. | 0 | 0.0 | — | — | primaryraw/gfi/official-stockfish__Stockfish.json |
| Newcomer Return RateShare of those merged first-time authors who sent a second pull request within 90 days. | Not shown: Collector failure | ||||
Persona view
| Persona | Rank | Score | Tier | Status |
|---|---|---|---|---|
| Balanced | 1,284 of 3,219 | 53.06 | C | Rated |
| First-timer | Not enough evidence to show under this lens. | |||
| Career capital | This repository's production-criticality signal is not yet high enough for career-capital ranking. | |||
| Senior systems | 609 of 1,276 | 54.81 | C | Rated |
| AI-assisted | 2,175 of 3,696 | 47.91 | C | Rated |
Integrity
- Snapshot
- 2026-10-17
- Raw hash
- 9f3f0d3a8cdd734c97451d4be2860216ed08e6a61f0790c0de5e49b6e05587b8
closed_unread
The full record is in data/2026-10-17/repos/5a.json, under the key official-stockfish/Stockfish.
How every number is measured: Porchlamp methodology.
Open an issue about this record and say what looks wrong.
Porchlamp (2026). official-stockfish/Stockfish. Snapshot 2026-10-17. https://porchlamp.org/projects/official-stockfish/stockfish/. CC BY 4.0.
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