• There are 384 files with units, with 48,844 lines of code.
• 5 very complex files (McCabe index sum 251+; 7,146 lines of code)
• 12 complex files (McCabe index sum 126-250; 8,196 lines of code)
• 31 medium complex files (McCabe index sum 51-125; 9,488 lines of code)
• 51 slightly complex files (McCabe index sum 26-50; 8,066 lines of code)
• 285 simple files (McCabe index sum 1-25; 15,948 lines of code)
• 11 main files have no units (e.g. languages without unit analysis, or files without functions) and are not classified.

The McCabe index of a file grows with its size: per 100 lines tells a large but plain file from a dense one, and most complex unit whether the complexity sits in one unit or is spread over many.

File	# lines	# units	McCabe index (sum)	per 100 lines	most complex unit
metadata.go in internal/flagutil	2085	92	689	33	37
output.go in internal/output	1237	74	393	32	36
agent.go in internal/sdk	1524	9	342	22	58
webhooks.go in internal/sdk	1175	8	267	23	56
triggers.go in internal/sdk	1125	7	253	22	56
interactive.go in internal/interactive	845	32	235	28	34
files.go in internal/sdk	1013	6	233	23	58
tui.go in internal/explorer	806	31	219	27	35
json.go in internal/sdk/sdkinternal/utils	640	11	200	31	65
flags.go in internal/flagutil	576	46	194	34	27
credentials.go in internal/sdk	836	6	192	23	47
diagnostics.go in internal/client	621	31	183	29	28
classify.go in internal/output	622	32	162	26	24
environments.go in internal/sdk	696	5	158	23	47
interaction.go in internal/sdk/models/interactions	592	61	132	22	12
root.go in internal/cli	531	16	131	25	25
artifact.go in internal/output	418	15	128	31	26
requestbody.go in internal/sdk/sdkinternal/utils	439	9	119	27	31
stepdeltadata.go in internal/sdk/models/interactions	582	31	113	19	56
media.go in internal/cli/custom	464	18	110	24	18
models.go in internal/sdk	481	3	107	22	58
async.go in internal/output	379	15	104	27	32
porcelain.go in internal/cli/custom	339	30	98	29	15
dispatch.go in internal/flagutil	335	15	97	29	41
createagentinteraction.go in internal/sdk/models/interactions	441	41	96	22	11
step.go in internal/sdk/models/interactions	482	26	93	19	46
utils.go in internal/sdk/sdkinternal/utils	315	25	89	28	10
transcribe.go in internal/cli/custom	365	10	87	24	26
union.go in internal/sdk/sdkinternal/utils	221	7	81	37	47
security.go in internal/sdk/sdkinternal/utils	278	9	78	28	14
queryparams.go in internal/sdk/sdkinternal/utils	270	12	75	28	22
files_upload.go in internal/cli/custom	323	7	73	23	28
async.go in internal/flagutil	193	9	73	38	19
retries.go in internal/sdk/sdkinternal/utils	293	11	72	25	19
run.ts in evals/harness-comparison/src	249	13	71	29	22
paginated.go in internal/output	233	5	71	30	26
config.go in internal/config	265	14	70	26	13
createmodelinteraction.go in internal/sdk/models/interactions	298	29	67	22	8
rawhttp.go in internal/cli/custom	254	12	65	26	19
intents.go in internal/cli	266	12	64	24	23
preset.go in internal/flagutil	210	8	64	30	28
tts.go in internal/cli/custom	251	5	59	24	26
generationconfig.go in internal/sdk/models/interactions	283	28	59	21	7
streaming.go in internal/output	171	8	58	34	31
main.go in cmd/gendocs	184	9	57	31	13
pretty.go in internal/output	208	11	55	26	11
register.go in internal/cli/custom	199	10	53	27	12
intent_video.go in internal/cli/agent	217	3	52	24	39
environmentsfiles.go in internal/sdk	232	2	50	22	49
stream.go in internal/sdk/types/stream	259	9	50	19	32

• File complexity is the sum of the McCabe indexes (conditional complexity) of the units (methods, functions...) in a file.
• Files are classified in five categories based on that sum: 1-25 (simple files), 26-50 (slightly complex files), 51-125 (medium complex files), 126-250 (complex files), 251+ (very complex files). The default bands are five times the unit complexity bands, as a file is a group of units.
• Only main code files with units are classified. Files without units (languages without unit analysis, or files without functions) have no complexity to measure and are left out rather than counted as simple.
• A very complex file holds many decisions, which often means it has too many responsibilities: a candidate to split, and a place where changes need more testing.