mitmproxy · Evidence Report

Window2025-09-08 – 2026-09-10

Timezone–

Commits read112

Contributors52

Model calls0

What the evidence shows

8 declared threshold(s) crossed

Thresholds are declared data, not prose. Each finding names its metric and the value that crossed it. None asserts a cause.

critical

Rule: process.review_coverage threshold crossed · value 8.8%

warning

Rule: ai.test_ratio_delta threshold crossed · value -33.9%

warning

Rule: delivery.stale_pr_share threshold crossed · value 40.6%

warning

Rule: people.bus_factor threshold crossed · value 1

warning

Rule: process.direct_push_share threshold crossed · value 32.9%

warning

Rule: temporal.weekend_share threshold crossed · value 24.3%

info

Rule: process.stale_branch_share threshold crossed · value 85.5%

info

Rule: quality.duplication_rate threshold crossed · value 19.4%

Delivery and process

Median time from ready to shipped

18.9 h

over 100 of 200 pull requests · (lower is generally preferred)

MEASURED50% coverage

Explain

Share of merged changes with a recorded review

40.0%

40 reviewed / 100 merged · (higher is generally preferred)

MEASURED50% coverage

Explain

Slowest tenth of changes take at least

11.8 a contributors

over 100 of 200 pull requests · (lower is generally preferred)

MEASURED50% coverage

Explain

Median wait for the first human review

23.0 h

over 60 of 200 pull requests · (lower is generally preferred)

MEASURED30% coverage

Explain

Releases to the main branch per week

2.14

over 112 of 112 commits · (higher is generally preferred)

PROXY · MED

Explain

Share of changes that needed a fix or revert

14.3%

16 failures / 112 landings · (lower is generally preferred)

PROXY · LOW

Explain

Median time to repair a reverted change

3.0 h

over 1 of 15 revert events · (lower is generally preferred)

PROXY · LOW7% coverage

Explain

Changes currently waiting

over 69 of 200 pull requests · (lower is generally preferred)

MEASURED34% coverage

Explain

Volume and cadence

Commits

112

over 112 of 112 commits

MEASURED

Explain

Lines of code added

158,974

over 1,673 of 1,980 file changes

MEASURED84% coverage

Explain

Lines of code removed

2,267

over 1,673 of 1,980 file changes

MEASURED84% coverage

Explain

Net change in codebase size

156,707

over 112 of 112 commits

MEASURED

Explain

Days per week with any activity

1.13

over 112 of 112 commits

MEASURED

Explain

Median commit size

over 107 of 112 commits

MEASURED96% coverage

Explain

Lines changed per active day

2,733

over 112 of 112 commits

MEASURED

Explain

Share of work that is new capability

21.7%

15 feature / 69 classified

PROXY · MED62% coverage

Explain

Agent and cost

7 of 11 metrics in this section are inferred. Each is marked individually; the tier is a property of how the number was obtained, not a defect.

Commits carrying an AI-tool trace (floor)

≥ 2.7%

3 detected / 112 n · a detectable floor, not a share

INFERRED · MED

Explain

Lines arriving in AI-traced commits (floor)

≥ 0.1%

224 detected_lines / 158,974 total_lines · a detectable floor, not a share

INFERRED · LOW

Explain

Contributors with any AI-traced commit

≥ 3.8%

2 adopters / 52 n · a detectable floor, not a share

INFERRED · MED

Explain

Share of AI traces from the single most-used tool

≥ 66.7%

2 top_tool_commits / 3 total_traces · a detectable floor, not a share

INFERRED · MED

Explain

Rework gap between AI-traced and untraced work

≥ -0.2%

0 ai_rate / 0.2 human_rate · a detectable floor, not a share · (lower is generally preferred)

INFERRED · LOW

Explain

Test-ratio gap between AI-traced and untraced work

≥ 35.0%

79.9 ai_rate / 44.9 human_rate · a detectable floor, not a share · (higher is generally preferred)

INFERRED · LOW

Explain

Size gap between AI-traced and untraced commits

≥ 633.3%

99 ai_size / 13.5 human_size · a detectable floor, not a share

INFERRED · LOW96% coverage

Explain

AI tool configuration files present

over 1 of 1 repositories

MEASURED

Explain

Quality signals

8 of 12 metrics in this section are proxy. Each is marked individually; the tier is a property of how the number was obtained, not a defect.

Rework rate: new code rewritten within 21 days

0.2%

247 reworked_lines / 158,974 added_lines · (lower is generally preferred)

PROXY · MED

Explain

Share of new code that is tests

45.0%

71,460 test_lines / 158,974 total_lines · (higher is generally preferred)

PROXY · MED

Explain

Share of code changes that updated tests too

65.8%

50 coupled / 76 code_commits · (higher is generally preferred)

PROXY · MED68% coverage

Explain

Share of all changes landing in the busiest 10 files

13.8%

10 top_n / 22,307 top_changes · (lower is generally preferred)

MEASURED

Explain

Share of changes too large to review properly

5.5%

11 large / 200 n · (lower is generally preferred)

PROXY · MED

Explain

Share of functions long enough to be hard to follow

2.0%

106 long / 5,296 n · (lower is generally preferred)

PROXY · MED

Explain

Deepest nesting in the worst tenth of functions

over 5,296 of 5,296 functions measured · (lower is generally preferred)

PROXY · MED

Explain

Share of code that is copy-pasted

11.6%

11,043 duplicated_lines / 94,845 scanned_lines · (lower is generally preferred)

PROXY · MED

Explain

People

Active contributors

over 52 of 52 commit authors

MEASURED

Explain

Bus factor: people holding half the code

over 52 of 52 contributors · (higher is generally preferred)

MEASURED

Explain

Share of the code written by one person

93.5%

150,740 top_lines / 161,241 total_lines · (lower is generally preferred)

MEASURED

Explain

Share of work from people new to this codebase

96.9%

156,231 newcomer_lines / 161,241 total_lines

MEASURED

Explain

Share of files only one person has ever touched

78.2%

919 single_owner / 1,175 files · (lower is generally preferred)

MEASURED

Explain

Share of contributors still active in the last 90 days

32.7%

17 recent / 52 total · (higher is generally preferred)

MEASURED

Explain

Commits per month

Counts · observed intervals only

Share of merges with a review

Rate · gaps are never bridged

Commits with an AI trace (floor)

A detectable floor · only tools that left a trace are counted

Proportion and completeness

Numerator and denominator always adjacent

Merged changes carrying a review

Collection completeness

Evidence and verification

33 measured · 17 proxy · 7 inferred

Each state is carried three times over: in words, in a pattern or stroke, and in placement. Any single channel can fail without losing the meaning: print, colour vision, or a high-contrast mode.

Measured · solid

Counted directly from a source record.

Proxy · 45° hatch

An estimator standing in for the thing itself. Always carries a caveat.

Inferred · stipple

Derived from detectable traces only. Reads as a floor, never a share.

Partial · 135° hatch

Opposite orientation to proxy, so the two never read as one another.

Unavailable · blank

A stated reason and the capability required. Never a zero.

Suppressed · absent

No value, no plotted position, no tooltip, no cell in any download.

Derivation · process.review_coverage

Formula	40 merged pull requests with a review / 100 merged = 40%
Sample	n = 100 of population 200 pull requests · 50.0% coverage
Excluded	100 · pull requests not merged (open or closed unmerged)
Assumption	Only GitHub review records count. Approval given in a plain comment, over chat, or in person is invisible, so a team with a different review habit will score unfairly low — verify against the listed examples before treating a low number as a finding.
Strongest evidence	Rank 1: 284.0 lines merged unreviewed.

Coverage and limitations

Repositories collected	6
Repositories failed	0
Lines excluded as generated	555,383
Pull request collection truncated	6 repository(-ies). Every pull-request metric inherits that ceiling.

Every metric

All metrics in this scope

Metric	Identifier	Value	Evidence kind	Confidence	Coverage	State
Median time from ready to shipped	delivery.lead_time_p50	18.9 h	measured	high	50%	Observed
Slowest tenth of changes take at least	delivery.lead_time_p90	11.8 a contributors	measured	high	50%	Observed
Median wait for the first human review	delivery.time_to_first_review_p50	23.0 h	measured	high	30%	Observed
Releases to the main branch per week	delivery.deploy_frequency_per_week	2.14	proxy	medium	100%	Observed
Share of changes that needed a fix or revert	delivery.change_failure_rate	14.3%	proxy	low	100%	Observed
Median time to repair a reverted change	delivery.mttr_hours	3.0 h	proxy	low	7%	Observed
Changes currently waiting	delivery.wip_open_prs	69	measured	high	34%	Observed
Share of open changes stalled over 30 days	delivery.stale_pr_share	40.6%	measured	high	34%	Observed
Commits	velocity.commits_total	112	measured	high	100%	Observed
Lines of code added	velocity.lines_added	158,974	measured	high	84%	Observed
Lines of code removed	velocity.lines_removed	2,267	measured	high	84%	Observed
Net change in codebase size	velocity.net_lines	156,707	measured	high	100%	Observed
Days per week with any activity	velocity.active_days_per_week	1.13	measured	high	100%	Observed
Median commit size	velocity.commit_size_p50	16	measured	high	96%	Observed
Lines changed per active day	velocity.lines_per_active_day	2,733	measured	high	100%	Observed
Share of work that is new capability	velocity.feature_work_share	21.7%	proxy	medium	62%	Observed
Share of commits that are trivial	velocity.trivial_commit_share	34.8%	proxy	medium	100%	Observed
Rework rate: new code rewritten within 21 days	quality.rework_rate	0.2%	proxy	medium	100%	Observed
Share of new code that is tests	quality.test_line_ratio	45.0%	proxy	medium	100%	Observed
Share of code changes that updated tests too	quality.test_coupling_rate	65.8%	proxy	medium	68%	Observed
Share of all changes landing in the busiest 10 files	quality.hotspot_concentration	13.8%	measured	high	100%	Observed
Share of changes too large to review properly	quality.large_change_share	5.5%	proxy	medium	100%	Observed
Share of functions long enough to be hard to follow	quality.long_function_share	2.0%	proxy	medium	100%	Observed
Deepest nesting in the worst tenth of functions	quality.max_nesting_p90	3	proxy	medium	100%	Observed
Share of code that is copy-pasted	quality.duplication_rate	11.6%	proxy	medium	100%	Observed
Share of lines that are comments	quality.comment_density	9.4%	proxy	medium	100%	Observed
Commits carrying an AI-tool trace (floor)	ai.detected_commit_share	2.7%	inferred	medium	100%	Observed
Lines arriving in AI-traced commits (floor)	ai.detected_line_share	0.1%	inferred	low	100%	Observed
Contributors with any AI-traced commit	ai.adopter_share	3.8%	inferred	medium	100%	Observed
Share of AI traces from the single most-used tool	ai.tool_concentration	66.7%	inferred	medium	100%	Observed
Rework gap between AI-traced and untraced work	ai.rework_delta	-0.2%	inferred	low	100%	Observed
Test-ratio gap between AI-traced and untraced work	ai.test_ratio_delta	35.0%	inferred	low	100%	Observed
Size gap between AI-traced and untraced commits	ai.commit_size_delta	633.3%	inferred	low	96%	Observed
AI tool configuration files present	ai.config_artifact_count	1	measured	high	100%	Observed
Share of AI suggestions actually accepted	ai.native_acceptance_rate	–	measured	high	–	Unavailable
Lines accepted from AI suggestions (measured)	ai.native_lines_accepted	–	measured	high	–	Unavailable
How far the commit-trace floor understates measured AI use	ai.floor_understatement	–	measured	medium	–	Unavailable
Active contributors	people.active_contributors	52	measured	high	100%	Observed
Bus factor: people holding half the code	people.bus_factor	1	measured	high	100%	Observed
Share of the code written by one person	people.top_contributor_share	93.5%	measured	high	100%	Observed
Share of work from people new to this codebase	people.newcomer_share	96.9%	measured	high	100%	Observed
Share of files only one person has ever touched	people.knowledge_silo_share	78.2%	measured	high	100%	Observed
Share of contributors still active in the last 90 days	people.contributor_retention	32.7%	measured	high	100%	Observed
Share of merged changes with a recorded review	process.review_coverage	40.0%	measured	high	50%	Observed
Share of changes merged by their own author	process.self_merge_share	3.0%	measured	high	50%	Observed
Median change size	process.pr_size_p50	36	measured	high	100%	Observed
Share of reviews done by one person	process.reviewer_load_top_share	40.6%	measured	high	100%	Observed
Share of work that bypassed pull requests	process.direct_push_share	58.0%	proxy	medium	100%	Observed
Share of branches abandoned over 90 days	process.stale_branch_share	50.0%	measured	high	100%	Observed
Branches	process.branch_count	20	measured	high	100%	Observed
Share of work saved outside working hours	temporal.after_hours_share	47.3%	proxy	medium	100%	Observed
Share of work saved at weekends	temporal.weekend_share	25.9%	proxy	medium	100%	Observed
Busiest hour of the day	temporal.peak_hour	19:00–20:00 local	measured	high	100%	Observed
How bursty the work pattern is	temporal.burstiness	1.94x	proxy	low	100%	Observed
Share of automated checks that failed	ci.failure_rate	31.4%	measured	high	84%	Observed
Median time for automated checks to finish	ci.duration_p50_minutes	1.1 min	measured	high	100%	Observed
Automated check runs per week	ci.runs_per_week	3.23	measured	high	84%	Observed

Provenance. Computed from mitmproxy, window [2025-09-08, 2026-09-10). 0 language-model calls. 555,383 lines excluded as generated before any metric was computed.

Redaction 1 · privacy policy 1.1.0.

No contributor is named, ranked or ordered anywhere in this document. That capability does not exist in the system that produced it.