Research & Blogs
9 min read
LegoFlow: Easy and Interactive Data Engineering for Coding Agents
An open-source, agent-operable pipeline for building SWE tasks, collecting trajectories, training models, and evaluating the full loop.
9 min read
LegoFlow Experiments: Practical Lessons for Agentic Code Data Engineering
Detailed block-level experiments, trajectory-selection lessons, scaffold and teacher ablations, evaluation hygiene, and autonomous end-to-end iteration.
8–12 min read
Lego-RL: Harness-Native Reinforcement Learning for Coding Agents
Without modifying OpenHands SDK, Claude Code, or OpenCode, Lego-RL plugs native harnesses into GSPO training. The same Qwen3.5-35B-A3B gains +6.4 / +5.8 / +9.4 on SWE-bench Verified.
7–9 min read
SWE-Review: Closing the Loop on Issue Resolution with Agentic Code Review
An agentic reviewer that explores the repository, traces root causes, and returns structured feedback to close the generate–review–revise loop.
8–10 min read
What Makes Interaction Trajectories Effective for Training Terminal Agents?
Why the strongest agent is not always the best teacher, and how environment-grounded supervision enables far more data-efficient terminal-agent training.
8–10 min read
SWE-Lego: Pushing the Limits of Supervised Fine-Tuning for Software Issue Resolving
A supervised fine-tuning recipe built from curated instances, validated trajectories, error masking, a difficulty curriculum, and a test-time verifier.