google/clusterfuzz
What happens to a stranger's pull request here, in the Porchlamp snapshot of 17 October 2026.
Outside pull requests to google/clusterfuzz got a first human reply in a median of 11.3 hours (25 pull requests, 19 April to 16 October 2026); 52% got none within 14 days. It ranks 2,173 of 3,219 overall. It is not ranked for first-time contributors: this repository does not show a low enough barrier for a first-time contributor.
| Rank | 2,173 of 3,219 |
|---|---|
| Score | 45.51 |
| Tier | C |
| Median first reply | 11.3 hours |
| 14-day no-reply share | 52% |
| First-timer rank | This repository does not show a low enough barrier for a first-time contributor. |
| Ecosystem | Python |
| Window | 19 April to 16 October 2026 |
Composite
- Rank
- 2,173 of 3,219
- Score
- 45.51
- Tier
- C
- Coverage
- 98% · Full
- Quadrant
- Nursery
Coordinates: leverage 39.9 (coverage 100%), friction 49.3 (coverage 97%)
Five pillars
| Pillar | Score | Coverage |
|---|---|---|
| Responsiveness | 61.4 | 100% |
| Criticality | 25.8 | 100% |
| Governance | 38.3 | 100% |
| Rigor | 64.6 | 100% |
| Accessibility | 42.4 | 85% |
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. | 70.0% | 87.5 | 20 | 19 April to 18 July 2026 | primaryraw/pr_window/google__clusterfuzz.json |
| PR Ghost Rate (14d)Share of outside pull requests with no maintainer response, merge or close within 14 days. | 52.0% | 0.0 | 50 | 20 April to 17 October 2026 | primaryraw/pr_window/google__clusterfuzz.json |
| First-timer Merge RateShare of first-time outside authors' decided pull requests that were merged. | 19.1% | 23.8 | 21 | — | primaryraw/author_history/google__clusterfuzz.json |
| Time to First ResponseMedian hours from an outside pull request opening to its first substantive human reply. | 11.3 hours (0.5 days) | 100.0 | 25 | 19 April to 16 October 2026 | primaryraw/pr_window/google__clusterfuzz.json |
| Time to Merge (p90)Hours within which 90% of merged outside pull requests were merged. | 350.1 hours (14.6 days) | 48.0 | 22 | 19 April to 16 October 2026 | primaryraw/pr_window/google__clusterfuzz.json |
Criticality
| Parameter | Value | Score | Count | Window | Source |
|---|---|---|---|---|---|
| DependentsPackages in the registry that depend on this project, counted once each. | 0 | 15.9 | — | — | primaryraw/dependents/google__clusterfuzz.json |
| Monthly DownloadsDownloads from the package registry in a month. | 3,288 downloads a month | 20.4 | — | — | primaryraw/downloads/pypi__clusterfuzz.json |
| OpenSSF CriticalityOpenSSF criticality score from 0 to 1, computed from the project's public activity signals. | 0.4089 | 40.9 | — | — | primaryraw/github_meta/google__clusterfuzz.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 | 337 | — | primaryraw/commits_365d/google__clusterfuzz.json |
| Legal IP RegimeThe contributor licence regime: DCO, none, a foundation CLA or a corporate CLA. | Company CLA | 25.0 | — | — | primaryraw/governance/google__clusterfuzz.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/google__clusterfuzz.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/google__clusterfuzz.json |
| Pipeline DefensesHow well the project's build and review pipeline defends against bad changes, 0 to 100. | 64 | 64.0 | — | — | primaryraw/scorecard/google__clusterfuzz.json |
| Substantive Review RateShare of decided pull requests that received a substantive review. | 27.9% | 34.9 | 43 | 19 April to 16 October 2026 | primaryraw/pr_window/google__clusterfuzz.json |
Accessibility
| Parameter | Value | Score | Count | Window | Source |
|---|---|---|---|---|---|
| Developer ExperienceDeveloper experience, 0 to 100: half CI run time, half setup signals. | 85 | 85.0 | 30 | — | primaryraw/actions_runs/google__clusterfuzz.json |
| Newcomer ConversionShare of first-time authors whose first pull request merged within 180 days. | 33.3% | 66.7 | 9 | — | primaryraw/author_history/google__clusterfuzz.json |
| Newcomer Issue SupplyOpen, unassigned, up-to-date issues marked for newcomers. | 0 | 0.0 | — | — | primaryraw/gfi/google__clusterfuzz.json |
| Newcomer Return RateShare of those merged first-time authors who sent a second pull request within 90 days. | Not shown: Insufficient sample size | ||||
Persona view
| Persona | Rank | Score | Tier | Status |
|---|---|---|---|---|
| Balanced | 2,173 of 3,219 | 45.51 | C | Rated |
| First-timer | This repository does not show a low enough barrier for a first-time contributor. | |||
| 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 | 1,860 of 3,696 | 50.03 | C | Rated |
Integrity
- Snapshot
- 2026-10-17
- Raw hash
- 910ccebf750f14c8bf601d4d9d234c79ea40c1e131291ea38a560ece37e2d7fb
No suspicion flags on this repository.
The full record is in data/2026-10-17/repos/bc.json, under the key google/clusterfuzz.
How every number is measured: Porchlamp methodology.
Open an issue about this record and say what looks wrong.
Porchlamp (2026). google/clusterfuzz. Snapshot 2026-10-17. https://porchlamp.org/projects/google/clusterfuzz/. CC BY 4.0.
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