Automated Code Review Agent

from deepagents import create_deep_agent
from langchain.chat_models import init_chat_model

agent = create_deep_agent(
    model=init_chat_model("anthropic:claude-sonnet-4-5-20250929"),
    system_prompt="""You are a senior code reviewer. For each file:
1. Read the code with read_file
2. Check for bugs, security issues, and style problems
3. Write a review report with write_file
4. If issues are fixable, apply the fix with edit_file""",
)

# The agent has built-in filesystem tools:
# read_file, write_file, edit_file, ls, glob, grep, execute
result = agent.invoke({
    "messages": [("user", "Review all Python files in src/ for security vulnerabilities and write a report to REVIEW.md")]
})