anthropics/claude-agent-sdk-python
File Complexity*
The distribution of files by complexity: the sum of the McCabe indexes of their units.
File Complexity Overall
  • There are 30 files with units, with 7,974 lines of code.
    • 0 very complex files (McCabe index sum 251+; 0 lines of code)
    • 3 complex files (McCabe index sum 126-250; 2,144 lines of code)
    • 4 medium complex files (McCabe index sum 51-125; 2,055 lines of code)
    • 5 slightly complex files (McCabe index sum 26-50; 2,084 lines of code)
    • 18 simple files (McCabe index sum 1-25; 1,691 lines of code)
  • 7 main files have no units (e.g. languages without unit analysis, or files without functions) and are not classified.
system0% | 26% | 25% | 26% | 21%
Legend:
251+
126-250
51-125
26-50
1-25


explore: grouped by folders | grouped by complexity
File Complexity per Extension
251+
126-250
51-125
26-50
1-25
py0% | 26% | 25% | 26% | 21%
js0% | 0% | 0% | 0% | 100%
File Complexity per Logical Decomposition
primary
251+
126-250
51-125
26-50
1-25
src0% | 27% | 23% | 27% | 21%
.github0% | 93% | 0% | 0% | 6%
scripts0% | 0% | 53% | 21% | 24%
Most Complex Files (Top 30)

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# unitsMcCabe index
(sum)		per 100
lines		most complex
unit
sessions.py
in src/claude_agent_sdk/_internal
 1113 48 189 17 27
subprocess_cli.py
in src/claude_agent_sdk/_internal/transport
 731 21 175 24 72
check_workflow_hardening.py
in .github/scripts
 300 14 134 45 32
build_wheel.py
in scripts
 489 21 99 20 11
query.py
in src/claude_agent_sdk/_internal
 678 20 61 9 8
session_resume.py
in src/claude_agent_sdk/_internal
 380 10 58 15 14
__init__.py
in src/claude_agent_sdk
 508 11 53 10 21
session_mutations.py
in src/claude_agent_sdk/_internal
 508 15 39 8 11
download_cli.py
in scripts
 200 14 37 19 6
types.py
in src/claude_agent_sdk
 894 7 32 4 12
session_summary.py
in src/claude_agent_sdk/_internal
 142 5 30 21 16
message_parser.py
in src/claude_agent_sdk/_internal
 340 2 29 9 26
_task_compat.py
in src/claude_agent_sdk/_internal
 95 13 21 22 4
session_store.py
in src/claude_agent_sdk/_internal
 119 7 21 18 10
38 3 16 42 10
sdk_mcp_bridge.py
in src/claude_agent_sdk/_internal
 233 7 13 6 3
102 3 12 12 7
_errors.py
in src/claude_agent_sdk
 59 6 11 19 6
24 2 9 38 6
session_store_validation.py
in src/claude_agent_sdk/_internal
 27 2 8 30 6
session_import.py
in src/claude_agent_sdk/_internal
 79 1 6 8 6
34 1 5 15 5
_mcp_compat.py
in src/claude_agent_sdk/_internal
 66 4 5 8 2
transcript_mirror_batcher.py
in src/claude_agent_sdk/_internal
 132 1 3 2 3
refresh-identity-token.js
in .github/actions/setup-claude-auth
 20 1 2 10 2
__init__.py
in src/claude_agent_sdk/_internal/transport
 23 2 2 9 1
session_store_conformance.py
in src/claude_agent_sdk/testing
 221 2 2 1 1
31 1 1 3 1
client.py
in src/claude_agent_sdk/_internal
 149 1 1 1 1
client.py
in src/claude_agent_sdk
 239 1 1 0 1
About This Analysis
  • 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.
Learn more...