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langchain-ai/langchain

2,953 files 19 languages 463,810 total lines @bd5b134 analysed just now
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01Overview

langchain · 317,901 lines of actual code
2,953
Files
317,901
Code lines
85,209
Comments
19
Languages
27,619
Complexity
0
Secrets
Line Composition 463,810 total lines
Code317,90168.5%
Blank60,70013.1%
Comments85,20918.4%
~99%
tokens saved
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The entire repo summarised by code_analyze — structured JSON in <2k tokens. The dossier above is built from one call. Drill into specifics with code_search.

02Languages & Tech Stack

what it’s written in, what it depends on

Language Breakdown

Language
Files
Code
Share
Python
2,638
283,845
89.3%
Markdown
55
11,861
3.7%
JSON
71
10,816
3.4%
YAML
47
5,621
1.8%
TOML
30
3,035
1.0%
Makefile
24
1,166
0.4%
License
23
391
0.1%
Shell
22
311
0.1%
JavaScript
2
235
0.1%
+ 10 more
—
559
·

Tech Stack  (47 detected)

Standard Library 230413 modules pytest 376 Pydantic 293 LangChain 129 unittest.mock / mock 67 OpenAI SDK 27 HTTPX 22 NumPy 18 PyYAML 11 Requests 11 Anthropic SDK 7 Hugging Face Transformers 4 NLTK 3 Pandas 3 python-dotenv 2 Aiohttp 1 Beautiful Soup 1 Elasticsearch Client 1 FastAPI 1 Hugging Face Datasets 1 Hugging Face Hub 1 Hugging Face Tokenizers 1 Jinja2 1 Node.js File System 1 Node.js Path 1 Playwright (Python) 1 PyTorch 1 SQLAlchemy 1 SciPy 1 Scikit-learn 1 Sentence Transformers 1 Streamlit 1 Uvicorn 1 lxml 1 spaCy 1

03Notable Files

where complexity and size live

Most Complex

FileLinesCx
libs/partners/openai/langchain_openai/chat_models/base.py3,130862
libs/core/langchain_core/runnables/base.py3,887645
libs/partners/anthropic/langchain_anthropic/chat_models.py2,239637
libs/core/langchain_core/messages/utils.py1,353436
libs/core/tests/unit_tests/runnables/test_runnable.py4,850389
libs/core/langchain_core/language_models/chat_models.py1,851347
libs/langchain_v1/langchain/agents/factory.py1,392316
libs/partners/perplexity/langchain_perplexity/chat_models.py1,121305
libs/langchain/langchain_classic/smith/evaluation/runner_utils.py1,272301
libs/partners/anthropic/tests/integration_tests/test_chat_models.py2,271287

Largest

FileLinesCx
libs/partners/openrouter/langchain_openrouter/data/_profiles.py8,5970
libs/core/tests/unit_tests/runnables/test_runnable.py4,850389
libs/partners/anthropic/tests/unit_tests/test_chat_models.py4,831201
libs/partners/openai/tests/unit_tests/chat_models/test_base.py4,722167
libs/core/langchain_core/runnables/base.py3,887645
libs/text-splitters/tests/unit_tests/test_text_splitters.py3,58782
libs/core/tests/unit_tests/test_tools.py3,25566
libs/partners/openai/langchain_openai/chat_models/base.py3,130862
libs/partners/openrouter/tests/unit_tests/test_chat_models.py2,95999
libs/core/tests/unit_tests/runnables/test_runnable_events_v2.py2,56461

04Code Quality

style, correctness, and maintainability findings

By Severity & Category

Warning
5
Info
650
Error
0
Total
655
By Category
concurrency 3 correctness 68 maintainability 584

Top Findings

Avoid global variables; use function parameters or class attributes for better scope management ×5
libs/core/langchain_core/utils/mustache.py:51 + 4 more

05Secrets & Credentials

pattern-based scan for hardcoded secrets
✓   No hardcoded credentials or secret patterns detected. Pattern-based scan only — does not catch logic-level vulnerabilities.

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