REPOSITORY DOSSIER  ·  github.com

langchain-ai/langchain

2,721 files 19 languages 378,137 total lines @9db9628 analysed just now
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01Overview

langchain · 300,422 lines of actual code
2,721
Files
300,422
Code lines
37,249
Comments
19
Languages
16,184
Complexity
0
Secrets
Line Composition 378,137 total lines
Code300,42279.4%
Blank40,46610.7%
Comments37,2499.9%
~99%
tokens saved
Reading langchain-ai/langchain via an LLM
~2.1M tokens → ~1.4k tokens via code_analyze

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
2,478
283,478
94.4%
JSON
45
5,642
1.9%
YAML
42
4,486
1.5%
TOML
24
2,737
0.9%
Makefile
22
1,068
0.4%
Markdown
28
1,010
0.3%
License
18
306
0.1%
JavaScript
2
235
0.1%
Extensible Stylesheet Language Transformations
3
200
0.1%
+ 10 more
—
554
·

Tech Stack  (46 detected)

LangChain 2012 pytest 318 Pydantic 269 unittest.mock / mock 55 OpenAI SDK 19 HTTPX 18 NumPy 18 Requests 12 PyYAML 11 Anthropic SDK 5 Hugging Face Transformers 4 NLTK 3 Pandas 3 python-dotenv 2 Fire 2 Sentence Transformers 2 Elasticsearch Client 1 Streamlit 1 Node.js Path 1 lxml 1 FastAPI 1 Node.js File System 1 Playwright (Python) 1 Hugging Face Tokenizers 1 Scikit-learn 1 spaCy 1 SciPy 1 Jinja2 1 SQLAlchemy 1 Uvicorn 1 redis-py (Redis) 1 Aiohttp 1 Hugging Face Datasets 1 Beautiful Soup 1 Standard Library 243712 modules

03Notable Files

where complexity and size live

Most Complex

FileLinesCx
libs/core/tests/unit_tests/runnables/test_runnable.py4,667374
libs/partners/openai/langchain_openai/chat_models/base.py4,607315
libs/langchain_v1/langchain/agents/factory.py1,363246
libs/standard-tests/langchain_tests/integration_tests/chat_models.py2,961220
libs/partners/openai/tests/integration_tests/chat_models/test_responses_api.py1,514220
libs/core/langchain_core/language_models/llms.py1,128220
libs/core/langchain_core/messages/block_translators/openai.py927210
libs/core/langchain_core/callbacks/manager.py1,930167
libs/partners/perplexity/langchain_perplexity/chat_models.py677157
libs/standard-tests/langchain_tests/integration_tests/sandboxes.py1,425155

Largest

FileLinesCx
libs/core/langchain_core/runnables/base.py6,27332
libs/core/tests/unit_tests/runnables/test_runnable.py4,667374
libs/partners/openai/langchain_openai/chat_models/base.py4,607315
libs/partners/openrouter/langchain_openrouter/data/_profiles.py3,9510
libs/text-splitters/tests/unit_tests/test_text_splitters.py3,64851
libs/partners/openai/tests/unit_tests/chat_models/test_base.py3,34574
libs/partners/openrouter/tests/unit_tests/test_chat_models.py3,10635
libs/partners/anthropic/tests/unit_tests/test_chat_models.py3,03829
libs/core/tests/unit_tests/test_tools.py2,99058
libs/standard-tests/langchain_tests/integration_tests/chat_models.py2,961220

04Code Quality

style, correctness, and maintainability findings

By Severity & Category

Warning
0
Info
35
Error
0
Total
3,674
By Category
correctness 17 maintainability 18

Top Findings

Ensure functions have docstrings for documentation ×2
.github/scripts/check_diff.py:56 + 1 more
Avoid unnecessary list conversions; use generators where possible ×3
.github/scripts/check_diff.py:127 + 2 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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