fmtlib/fmt
What happens to a stranger's pull request here, in the Porchlamp snapshot of 17 October 2026.
Outside pull requests to fmtlib/fmt got a first human reply in a median of 42.4 hours (120 pull requests, 18 April to 15 October 2026); 1% got none within 14 days. It ranks 639 of 3,219 overall. For first-time contributors it ranks 482 of 1,525 (the top 32%).
| Rank | 639 of 3,219 |
|---|---|
| Score | 58.39 |
| Tier | B |
| Median first reply | 42.4 hours |
| 14-day no-reply share | 1% |
| First-timer rank | 482 of 1,525 |
| Ecosystem | C and C++ |
| Window | 18 April to 15 October 2026 |
Composite
- Rank
- 639 of 3,219
- Score
- 58.39
- Tier
- B
- Coverage
- 100% · Full
- Quadrant
- Sweet Spot
Coordinates: leverage 53.1 (coverage 100%), friction 36.7 (coverage 100%)
Five pillars
| Pillar | Score | Coverage |
|---|---|---|
| Responsiveness | 74.7 | 100% |
| Criticality | 51.6 | 100% |
| Governance | 50.5 | 100% |
| Rigor | 57.4 | 100% |
| Accessibility | 54.2 | 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. | 100.0% | 100.0 | 49 | 18 April to 17 July 2026 | primaryraw/pr_window/fmtlib__fmt.json |
| PR Ghost Rate (14d)Share of outside pull requests with no maintainer response, merge or close within 14 days. | 0.9% | 98.2 | 114 | 20 April to 17 October 2026 | primaryraw/pr_window/fmtlib__fmt.json |
| First-timer Merge RateShare of first-time outside authors' decided pull requests that were merged. | 48.8% | 61.0 | 43 | — | primaryraw/author_history/fmtlib__fmt.json |
| Time to First ResponseMedian hours from an outside pull request opening to its first substantive human reply. | 42.4 hours (1.8 days) | 54.4 | 120 | 18 April to 15 October 2026 | primaryraw/pr_window/fmtlib__fmt.json |
| Time to Merge (p90)Hours within which 90% of merged outside pull requests were merged. | 239.8 hours (10 days) | 63.7 | 83 | 18 April to 15 October 2026 | primaryraw/pr_window/fmtlib__fmt.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. | 0.5157 | 51.6 | — | — | proxy:no_dependents_signalraw/github_meta/fmtlib__fmt.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 | 359 | — | primaryraw/commits_365d/fmtlib__fmt.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/fmtlib__fmt.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/fmtlib__fmt.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/fmtlib__fmt.json |
| Pipeline DefensesHow well the project's build and review pipeline defends against bad changes, 0 to 100. | 80 | 80.0 | — | — | primaryraw/scorecard/fmtlib__fmt.json |
| Substantive Review RateShare of decided pull requests that received a substantive review. | 35.8% | 44.7 | 151 | 18 April to 15 October 2026 | primaryraw/pr_window/fmtlib__fmt.json |
Accessibility
| Parameter | Value | Score | Count | Window | Source |
|---|---|---|---|---|---|
| Developer ExperienceDeveloper experience, 0 to 100: half CI run time, half setup signals. | 50 | 50.0 | 12 | — | primaryraw/actions_runs/fmtlib__fmt.json |
| Newcomer ConversionShare of first-time authors whose first pull request merged within 180 days. | 78.6% | 100.0 | 14 | — | primaryraw/author_history/fmtlib__fmt.json |
| Newcomer Issue SupplyOpen, unassigned, up-to-date issues marked for newcomers. | 1 | 10.0 | — | — | primaryraw/gfi/fmtlib__fmt.json |
| Newcomer Return RateShare of those merged first-time authors who sent a second pull request within 90 days. | 27.3% | 54.5 | 11 | — | primaryraw/author_history/fmtlib__fmt.json |
Persona view
| Persona | Rank | Score | Tier | Status |
|---|---|---|---|---|
| Balanced | 639 of 3,219 | 58.39 | B | Rated |
| First-timer | 482 of 1,525 | 60.86 | 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 | 779 of 3,696 | 58.33 | B | Rated |
Integrity
- Snapshot
- 2026-10-17
- Raw hash
- 75d9833f4e8a5f3f66e2e3108a9510349ebc267db89ae33ac179525b5239f20f
No suspicion flags on this repository.
The full record is in data/2026-10-17/repos/d5.json, under the key fmtlib/fmt.
How every number is measured: Porchlamp methodology.
Open an issue about this record and say what looks wrong.
Porchlamp (2026). fmtlib/fmt. Snapshot 2026-10-17. https://porchlamp.org/projects/fmtlib/fmt/. CC BY 4.0.
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