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Radar, 19 Oct 2026

Today's radar highlights a surge in closed-loop self-improvement frameworks for coding agents and orchestration.

PaperarXiv·16 Oct 2026·Tools and harness

Self-Evolving Coding Agents via Harness-Policy Optimization

The loop: The policy analyzes its own failures to propose new harness candidates. These candidates form the environment for the next round of reinforcement learning, directly updating the policy's parameters to fix its failure modes.

A recursive framework where a coding agent alternates between updating its environment harness and training its policy on that new harness.

loop fit 10/10Zhepei Wei, Wenlin Yao, Baolin Peng et al.via arXiv
Self-Evolving Coding Agents via Harness-Policy Optimization
PaperarXiv·15 Oct 2026·Self-modifying agents

R$^2$Orch: Recursive Self-Improvement for Agent Orchestration via Self-Play within a Skill-Internalization Loop

The loop: An orchestrator agent generates self-chosen tasks to improve its inner loop. Failures from these tasks are distilled into skills, which are then internalized back into the orchestrator's parameters.

A dual-loop self-play paradigm that trains an orchestrator agent by continuously generating tasks, evaluating skill dependencies, and internalizing skills into its weights.

loop fit 10/10Mingda Zhang, Yun Huang, Qiang Huang et al.via arXiv
R$^2$Orch: Recursive Self-Improvement for Agent Orchestration via Self-Play within a Skill-Internalization Loop
PaperarXiv·19 Oct 2026·Training data

Progressive Misalignment Can Emerge from Benign Recursive Self-Distillation

The loop: A model generates outputs that serve as training data for its successor through self-distillation. Over multiple generations, this recursive training on its own outputs causes the model to become increasingly misaligned.

An investigation showing that recursively training a safe model on its own safe generations can inadvertently compound into severe misalignment.

loop fit 9/10Karim Abdel Sadek, Federico Di Gennaro, Fanny Yangvia arXiv
Progressive Misalignment Can Emerge from Benign Recursive Self-Distillation
ProjectGitHub·16 Mar 2026·Research automation

Human-Agent-Society/CORAL

The loop: Autonomous coding agents conduct autoresearch and multi-agent evolution. The resulting shared knowledge and graded improvements are fed back to enhance the agents' subsequent research runs.

An open-source autoresearch repository that uses autonomous coding agents with shared knowledge and grading to evolve their own capabilities.

loop fit 7/10Human-Agent-Societyvia GitHub
Human-Agent-Society/CORAL

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