alibaba/fastjson2
What happens to a stranger's pull request here, in the Porchlamp snapshot of 17 October 2026.
Outside pull requests to alibaba/fastjson2 got a first human reply in a median of 2 days (68 pull requests, 19 April to 16 October 2026); 31% got none within 14 days. It ranks 966 of 3,219 overall. For first-time contributors it ranks 1,110 of 1,525 (the bottom 28%).
| Rank | 966 of 3,219 |
|---|---|
| Score | 55.62 |
| Tier | B |
| Median first reply | 2 days (48.3 hours) |
| 14-day no-reply share | 31% |
| First-timer rank | 1,110 of 1,525 |
| Ecosystem | Java |
| Window | 19 April to 16 October 2026 |
Composite
- Rank
- 966 of 3,219
- Score
- 55.62
- Tier
- B
- Coverage
- 98% · Full
- Quadrant
- Crucible
Coordinates: leverage 66.8 (coverage 100%), friction 56.1 (coverage 97%)
Five pillars
| Pillar | Score | Coverage |
|---|---|---|
| Responsiveness | 55.7 | 100% |
| Criticality | 73.4 | 100% |
| Governance | 29.5 | 100% |
| Rigor | 80.5 | 100% |
| Accessibility | 35.8 | 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 | 10 | 19 April to 18 July 2026 | primaryraw/pr_window/alibaba__fastjson2.json |
| PR Ghost Rate (14d)Share of outside pull requests with no maintainer response, merge or close within 14 days. | 31.0% | 37.9 | 87 | 20 April to 17 October 2026 | primaryraw/pr_window/alibaba__fastjson2.json |
| First-timer Merge RateShare of first-time outside authors' decided pull requests that were merged. | 50.0% | 62.5 | 12 | — | primaryraw/author_history/alibaba__fastjson2.json |
| Time to First ResponseMedian hours from an outside pull request opening to its first substantive human reply. | 48.3 hours (2 days) | 49.7 | 68 | 19 April to 16 October 2026 | primaryraw/pr_window/alibaba__fastjson2.json |
| Time to Merge (p90)Hours within which 90% of merged outside pull requests were merged. | 1630.0 hours (67.9 days) | 6.8 | 18 | 19 April to 16 October 2026 | primaryraw/pr_window/alibaba__fastjson2.json |
Criticality
| Parameter | Value | Score | Count | Window | Source |
|---|---|---|---|---|---|
| DependentsPackages in the registry that depend on this project, counted once each. | 5,171 | 93.9 | — | — | primaryraw/dependents/alibaba__fastjson2.json |
| 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. | 0.5005 | 50.0 | — | — | primaryraw/github_meta/alibaba__fastjson2.json |
Governance
| Parameter | Value | Score | Count | Window | Source |
|---|---|---|---|---|---|
| Elephant FactorThe fewest organisations that account for half of the last year's commits. | 1 | 25.0 | 207 | — | primaryraw/commits_365d/alibaba__fastjson2.json |
| Legal IP RegimeThe contributor licence regime: DCO, none, a foundation CLA or a corporate CLA. | Company CLA | 25.0 | — | — | primaryraw/governance/alibaba__fastjson2.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/alibaba__fastjson2.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/alibaba__fastjson2.json |
| Pipeline DefensesHow well the project's build and review pipeline defends against bad changes, 0 to 100. | 55 | 55.0 | — | — | primaryraw/scorecard/alibaba__fastjson2.json |
| Substantive Review RateShare of decided pull requests that received a substantive review. | 84.6% | 100.0 | 26 | 19 April to 16 October 2026 | primaryraw/pr_window/alibaba__fastjson2.json |
Accessibility
| Parameter | Value | Score | Count | Window | Source |
|---|---|---|---|---|---|
| Developer ExperienceDeveloper experience, 0 to 100: half CI run time, half setup signals. | 47.375 | 47.4 | 30 | — | primaryraw/actions_runs/alibaba__fastjson2.json |
| Newcomer ConversionShare of first-time authors whose first pull request merged within 180 days. | 33.3% | 66.7 | 9 | — | primaryraw/author_history/alibaba__fastjson2.json |
| Newcomer Issue SupplyOpen, unassigned, up-to-date issues marked for newcomers. | 0 | 0.0 | — | — | primaryraw/gfi/alibaba__fastjson2.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 | 966 of 3,219 | 55.62 | B | Rated |
| First-timer | 1,110 of 1,525 | 50.05 | C | Rated |
| Career capital | 471 of 798 | 56.47 | B | Rated |
| Senior systems | Fewer than 3 organizations account for most commits (not multi-vendor). | |||
| AI-assisted | 455 of 3,696 | 62.00 | B | Rated |
Integrity
- Snapshot
- 2026-10-17
- Raw hash
- b72e7c2c6f24e66b6891121c9ab8b6c7c360db9ab29b514f24f7138cd4b1610c
No suspicion flags on this repository.
The full record is in data/2026-10-17/repos/5f.json, under the key alibaba/fastjson2.
How every number is measured: Porchlamp methodology.
Open an issue about this record and say what looks wrong.
Porchlamp (2026). alibaba/fastjson2. Snapshot 2026-10-17. https://porchlamp.org/projects/alibaba/fastjson2/. CC BY 4.0.
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