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

microsoft/data-formulator

Python

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

Outside pull requests to microsoft/data-formulator got a first human reply in a median of 4.3 hours (13 pull requests, 10 April to 7 October 2026); 43% got none within 14 days. It ranks 2,222 of 3,219 overall. For first-time contributors it ranks 914 of 1,525 (the bottom 41%).

Key facts
Rank2,222 of 3,219
Score45.11
TierC
Median first reply4.3 hours
14-day no-reply share43%
First-timer rank914 of 1,525
EcosystemPython
Window10 April to 7 October 2026

Composite

Rank
2,222 of 3,219
Score
45.11
Tier
C
Coverage
94% · Ceiling A
Quadrant
Nursery

Coordinates: leverage 30.9 (coverage 100%), friction 43.5 (coverage 88%)

Five pillars

Score out of 100, and how much of the pillar was measured
PillarScoreCoverage
Responsiveness72.375%
Criticality21.4100%
Governance29.5100%
Rigor47.8100%
Accessibility57.5100%

The measured parameters

Responsiveness

ParameterValueScoreCountWindowSource
Decision Rate (90d)Share of outside pull requests that were merged or closed within 90 days.Not shown: Insufficient sample size
PR Ghost Rate (14d)Share of outside pull requests with no maintainer response, merge or close within 14 days.42.9%14.32120 April to 17 October 2026primaryraw/pr_window/microsoft__data-formulator.json
First-timer Merge RateShare of first-time outside authors' decided pull requests that were merged.54.6%68.211—primaryraw/author_history/microsoft__data-formulator.json
Time to First ResponseMedian hours from an outside pull request opening to its first substantive human reply.4.3 hours (0.2 days)100.01310 April to 7 October 2026primaryraw/pr_window/microsoft__data-formulator.json
Time to Merge (p90)Hours within which 90% of merged outside pull requests were merged.69.8 hours (2.9 days)84.22410 April to 7 October 2026primaryraw/pr_window/microsoft__data-formulator.json

Criticality

ParameterValueScoreCountWindowSource
DependentsPackages in the registry that depend on this project, counted once each.015.9——primaryraw/dependents/microsoft__data-formulator.json
Monthly DownloadsDownloads from the package registry in a month.1,032 downloads a month12.3——primaryraw/downloads/pypi__data-formulator.json
OpenSSF CriticalityOpenSSF criticality score from 0 to 1, computed from the project's public activity signals.0.341434.1——primaryraw/github_meta/microsoft__data-formulator.json

Governance

ParameterValueScoreCountWindowSource
Elephant FactorThe fewest organisations that account for half of the last year's commits.125.0876—primaryraw/commits_365d/microsoft__data-formulator.json
Legal IP RegimeThe contributor licence regime: DCO, none, a foundation CLA or a corporate CLA.Company CLA25.0——primaryraw/governance/microsoft__data-formulator.json
Promotion LadderHow openly a contributor can become a maintainer, from closed to verified.No written path to becoming a maintainer40.0——primaryraw/governance/microsoft__data-formulator.json

Rigor

ParameterValueScoreCountWindowSource
AI Policy PostureWhether the project has a written policy on AI-assisted contributions.Written AI policy95.0——primaryraw/governance/microsoft__data-formulator.json
Pipeline DefensesHow well the project's build and review pipeline defends against bad changes, 0 to 100.47.247.275—proxy:review_ciraw/pr_window/microsoft__data-formulator.json
Substantive Review RateShare of decided pull requests that received a substantive review.1.2%1.58110 April to 7 October 2026primaryraw/pr_window/microsoft__data-formulator.json

Accessibility

ParameterValueScoreCountWindowSource
Developer ExperienceDeveloper experience, 0 to 100: half CI run time, half setup signals.7070.030—primaryraw/actions_runs/microsoft__data-formulator.json
Newcomer ConversionShare of first-time authors whose first pull request merged within 180 days.50.0%100.012—primaryraw/author_history/microsoft__data-formulator.json
Newcomer Issue SupplyOpen, unassigned, up-to-date issues marked for newcomers.220.0——primaryraw/gfi/microsoft__data-formulator.json
Newcomer Return RateShare of those merged first-time authors who sent a second pull request within 90 days.16.7%33.36—primaryraw/author_history/microsoft__data-formulator.json

Persona view

PersonaRankScoreTierStatus
Balanced2,222 of 3,21945.11CRated
First-timer914 of 1,52553.89CRated
Career capitalThis repository's production-criticality signal is not yet high enough for career-capital ranking.
Senior systemsFewer than 3 organizations account for most commits (not multi-vendor).
AI-assisted2,474 of 3,69645.65CRated

Integrity

Snapshot
2026-10-17
Raw hash
322f6072c37b4df56d81da86b6a82ae285aefd24936f8e86ae0c48696aac0ac2

No suspicion flags on this repository.

The full record is in data/2026-10-17/repos/fb.json, under the key microsoft/data-formulator.

How every number is measured: Porchlamp methodology.

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

Porchlamp (2026). microsoft/data-formulator. Snapshot 2026-10-17. https://porchlamp.org/projects/microsoft/data-formulator/. CC BY 4.0.

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