Agentless

Simplified LLM-based approach to automated software engineering without agents

Code & DevelopmentFree

Agentless is an open-source automated software engineering framework that uses a simplified, two-phase approach—localization followed by repair—to fix software bugs, without complex autonomous agent frameworks. The method locates relevant code using hierarchical search, then generates and validates fixes, achieving strong performance on software engineering benchmarks with lower complexity and cost than full agent-based approaches. Researchers in software engineering automation, teams evaluating lightweight alternatives to autonomous coding agents, and organizations benchmarking automated bug repair approaches use Agentless for its simplicity, reproducibility, and competitive performance.

Key Features

• ✓Two-phase approach
• ✓Code localization
• ✓Bug repair
• ✓SWE-bench performance
• ✓Open-source