prometheus/alertmanager
What happens to a stranger's pull request here, in the Porchlamp snapshot of 14 October 2026.
Outside pull requests to alertmanager got a first human reply in a median of 2.7 days (299 pull requests, 10 April to 7 October 2026); 28% got none within 14 days. It ranks 385 of 3,833 overall and 927 of 1,968 for first-time contributors.
Rating
- Score: 63.98
- Coverage: 93% · Ceiling A
- Tier: B
- Quadrant: Sweet Spot
- Ecosystem: Go
Five pillars
| Pillar | Score | Coverage |
|---|---|---|
| Responsiveness | 58.3 | 100% |
| Criticality | 69.6 | 100% |
| Governance | 82.0 | 100% |
| Rigor | 64.6 | 100% |
| Accessibility | 39.5 | 50% |
Rank in each lens
| Lens | Standing |
|---|---|
| Balanced | Rank 385 of 3,833 |
| First-timer | Rank 927 of 1,968 |
| Career capital | Rank 262 of 823 |
| Senior systems | Rank 91 of 1,206 |
| AI-assisted | Rank 351 of 3,929 |
The measured parameters
| Parameter | Value | Count | Window | What it measures |
|---|---|---|---|---|
| Time to First Response | 65.3278 | 299 | 10 April to 7 October 2026 | Median hours from an outside pull request opening to its first substantive human reply. |
| Decision Rate (90d) | 0.879 | 124 | 10 April to 9 July 2026 | Share of outside pull requests that were merged or closed within 90 days. |
| First-timer Merge Rate | 0.4762 | 42 | — | Share of first-time outside authors' decided pull requests that were merged. |
| PR Ghost Rate (14d) | 0.2766 | 235 | 16 April to 13 October 2026 | Share of outside pull requests with no maintainer response, merge or close within 14 days. |
| Time to Merge (p90) | 489.8317 | 300 | 10 April to 7 October 2026 | Hours within which 90% of merged outside pull requests were merged. |
| Dependents | 481 | — | — | Packages in the registry that depend on this project, counted once each. |
| OpenSSF Criticality | 0.5694 | — | — | OpenSSF criticality score from 0 to 1, computed from the project's public activity signals. |
| Monthly Downloads | Not shown: Not applicable | — | — | Downloads from the package registry in a month. |
| Legal IP Regime | DCO | — | — | The contributor licence regime: DCO, none, a foundation CLA or a corporate CLA. |
| Elephant Factor | 4 | 489 | — | The fewest organisations that account for half of the last year's commits. |
| Promotion Ladder | AD_HOC | — | — | How openly a contributor can become a maintainer, from closed to verified. |
| Pipeline Defenses | 72.5 | — | — | How well the project's build and review pipeline defends against bad changes, 0 to 100. |
| AI Policy Posture | REGULATED | — | — | Whether the project has a written policy on AI-assisted contributions. |
| Substantive Review Rate | 0.1883 | 377 | 10 April to 7 October 2026 | Share of decided pull requests that received a substantive review. |
| Newcomer Issue Supply | 2 | — | — | Open, unassigned, up-to-date issues marked for newcomers. |
| Newcomer Conversion | Not shown: Insufficient sample size | — | — | Share of first-time authors whose first pull request merged within 180 days. |
| Newcomer Return Rate | Not shown: Insufficient sample size | — | — | Share of those merged first-time authors who sent a second pull request within 90 days. |
| Developer Experience | 85 | 30 | — | Developer experience, 0 to 100: half CI run time, half setup signals. |
Similar projects
The ranked projects nearest this one in the same ecosystem.
- vllm-project/semantic-router (rank 378)
- vllm-project/aibrix (rank 384)
- elazarl/goproxy (rank 392)
- fyne-io/fyne (rank 393)
- securego/gosec (rank 396)
Evidence
- Snapshot 2026-10-14, data as of 13 October 2026.
- Record hash:
044b1bcf6956aa324fc02d0b00cf4ea04528029ba6e479dc8854828ac8710682 - The full record is in data/2026-10-14/repos/f3.json, under the key
prometheus/alertmanager. - How every number is measured: Porchlamp methodology.
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