PorchlampFind the projects that leave the light on.2026-10-17

What happens to a stranger's pull request here, in the Porchlamp snapshot of 17 October 2026.

Outside pull requests to apple/coremltools got a first human reply in a median of 47.1 hours (93 pull requests, 19 April to 16 October 2026); 47% got none within 14 days. It ranks 796 of 3,219 overall. For first-time contributors it ranks 786 of 1,525 (the bottom 49%).

Key facts
Rank796 of 3,219
Score57.02
TierB
Median first reply47.1 hours
14-day no-reply share47%
First-timer rank786 of 1,525
EcosystemPython
Window19 April to 16 October 2026

Composite

Rank
796 of 3,219
Score
57.02
Tier
B
Coverage
98% · Full
Quadrant
Sweet Spot

Coordinates: leverage 55.4 (coverage 100%), friction 39.0 (coverage 97%)

Five pillars

Score out of 100, and how much of the pillar was measured
PillarScoreCoverage
Responsiveness54.9100%
Criticality56.5100%
Governance76.8100%
Rigor39.3100%
Accessibility52.985%

The measured parameters

Responsiveness

ParameterValueScoreCountWindowSource
Decision Rate (90d)Share of outside pull requests that were merged or closed within 90 days.55.4%69.25619 April to 18 July 2026primaryraw/pr_window/apple__coremltools.json
PR Ghost Rate (14d)Share of outside pull requests with no maintainer response, merge or close within 14 days.46.8%6.315820 April to 17 October 2026primaryraw/pr_window/apple__coremltools.json
First-timer Merge RateShare of first-time outside authors' decided pull requests that were merged.87.1%100.031—primaryraw/author_history/apple__coremltools.json
Time to First ResponseMedian hours from an outside pull request opening to its first substantive human reply.47.1 hours (2 days)50.79319 April to 16 October 2026primaryraw/pr_window/apple__coremltools.json
Time to Merge (p90)Hours within which 90% of merged outside pull requests were merged.908.1 hours (37.8 days)14.25819 April to 16 October 2026primaryraw/pr_window/apple__coremltools.json

Criticality

ParameterValueScoreCountWindowSource
DependentsPackages in the registry that depend on this project, counted once each.4364.6——primaryraw/dependents/apple__coremltools.json
Monthly DownloadsDownloads from the package registry in a month.1.1 million downloads a month62.6——primaryraw/downloads/pypi__coremltools.json
OpenSSF CriticalityOpenSSF criticality score from 0 to 1, computed from the project's public activity signals.0.427642.8——primaryraw/github_meta/apple__coremltools.json

Governance

ParameterValueScoreCountWindowSource
Elephant FactorThe fewest organisations that account for half of the last year's commits.9100.092—primaryraw/commits_365d/apple__coremltools.json
Legal IP RegimeThe contributor licence regime: DCO, none, a foundation CLA or a corporate CLA.No CLA or sign-off found85.0——primaryraw/governance/apple__coremltools.json
Promotion LadderHow openly a contributor can become a maintainer, from closed to verified.No written path to becoming a maintainer40.0——primaryraw/governance/apple__coremltools.json

Rigor

ParameterValueScoreCountWindowSource
AI Policy PostureWhether the project has a written policy on AI-assisted contributions.No written AI policy40.0——primaryraw/governance/apple__coremltools.json
Pipeline DefensesHow well the project's build and review pipeline defends against bad changes, 0 to 100.42.542.5——primaryraw/scorecard/apple__coremltools.json
Substantive Review RateShare of decided pull requests that received a substantive review.27.5%34.46919 April to 16 October 2026primaryraw/pr_window/apple__coremltools.json

Accessibility

ParameterValueScoreCountWindowSource
Developer ExperienceDeveloper experience, 0 to 100: half CI run time, half setup signals.Not shown: Insufficient sample size
Newcomer ConversionShare of first-time authors whose first pull request merged within 180 days.69.2%100.013—primaryraw/author_history/apple__coremltools.json
Newcomer Issue SupplyOpen, unassigned, up-to-date issues marked for newcomers.00.0——primaryraw/gfi/apple__coremltools.json
Newcomer Return RateShare of those merged first-time authors who sent a second pull request within 90 days.33.3%66.79—primaryraw/author_history/apple__coremltools.json

Persona view

PersonaRankScoreTierStatus
Balanced796 of 3,21957.02BRated
First-timer786 of 1,52556.17BRated
Career capitalThis repository's production-criticality signal is not yet high enough for career-capital ranking.
Senior systems491 of 1,27657.69BRated
AI-assisted1,481 of 3,69652.84CRated

Integrity

Snapshot
2026-10-17
Raw hash
5437ed4efcb4e40dcc6b9e9d270f2e3dfa916e132d6fe31d87a4ccda416066e4

No suspicion flags on this repository.

The full record is in data/2026-10-17/repos/89.json, under the key apple/coremltools.

How every number is measured: Porchlamp methodology.

Open an issue about this record and say what looks wrong.

Porchlamp (2026). apple/coremltools. Snapshot 2026-10-17. https://porchlamp.org/projects/apple/coremltools/. CC BY 4.0.

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