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CaP-X: A framework for benchmarking and improving coding agents for robot manipulation

15 Pith papers cite this work. Polarity classification is still indexing.

15 Pith papers citing it
abstract

"Code-as-Policy" considers how executable code can complement data-intensive Vision-Language-Action (VLA) methods, yet their effectiveness as autonomous controllers for embodied manipulation remains underexplored. We present CaP-X, an open-access framework for systematically studying Code-as-Policy agents in robot manipulation. At its core is CaP-Gym, an interactive environment in which agents control robots by synthesizing and executing programs that compose perception and control primitives. Building on this foundation, CaP-Bench evaluates frontier language and vision-language models across varying levels of abstraction, interaction, and perceptual grounding. Across 12 models, CaP-Bench reveals a consistent trend: performance improves with human-crafted abstractions but degrades as these priors are removed, exposing a dependence on designer scaffolding. At the same time, we observe that this gap can be mitigated through scaling agentic test-time computation--through multi-turn interaction, structured execution feedback, visual differencing, automatic skill synthesis, and ensembled reasoning--substantially improves robustness even when agents operate over low-level primitives. These findings allow us to derive CaP-Agent0, a training-free framework that recovers human-level reliability on several manipulation tasks in simulation and on real embodiments. We further introduce CaP-RL, showing reinforcement learning with verifiable rewards improves success rates and transfers from sim2real with minimal gap. Together, CaP-X provides a principled, open-access platform for advancing embodied coding agents.

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2026 15

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representative citing papers

Recover, Discover, Plan: Learning Skills and Concepts from Robot Failures

cs.RO · 2026-06-16 · unverdicted · novelty 7.0

ReSYNC learns recovery skills via RL then discovers and refines relational predicates to enable abstract planning that generalizes failure avoidance to unseen long-horizon tasks, outperforming baselines by over 50% in simulation and transferring to real robots.

Improving Robotic Generalist Policies via Flow Reversal Steering

cs.RO · 2026-06-11 · unverdicted · novelty 7.0

Flow Reversal Steering steers flow matching generalist policies by reversing suboptimal actions to nearby better modes, enabling improved zero-shot control, quick distillation, and RL bootstrapping in robotic manipulation.

VoLo: A Physical Orchestrator for Open-Vocabulary Long-Horizon Manipulation

cs.RO · 2026-06-05 · unverdicted · novelty 7.0

VoLoAgent uses a VLM to steer heterogeneous robot capabilities as interruptible tools for long-horizon manipulation and introduces the RoboVoLo benchmark, claiming substantial outperformance over single VLA/VLM or tool-based systems with real-robot validation.

Sequential Planning via Anchored Robotic Keypoints

cs.RO · 2026-06-29 · unverdicted · novelty 6.0

SPARK reaches 43.7% success on six LIBERO-PRO cells by LLM-generated typed behavior trees plus multi-prompt perception and recovery, more than doubling CaP-Agent0 and VLA baselines.

Playful Agentic Robot Learning

cs.RO · 2026-06-17 · unverdicted · novelty 6.0

RATs agents generate and solve their own exploratory tasks during play, distill successful code into a skill library, and reuse it to improve held-out task performance by 20.6 and 17.0 points on two benchmarks.

Guava: An Effective and Universal Harness for Embodied Manipulation

cs.RO · 2026-06-16 · unverdicted · novelty 6.0

Guava harness enables 4B open-source models to achieve performance comparable to frontier models on embodied manipulation tasks by distilling capabilities from under 2K simulation trajectories using three identified design principles.

GraspGen-X: Cross-Embodiment 6-DOF Diffusion-based Grasping

cs.RO · 2026-05-31 · unverdicted · novelty 6.0

GraspGen-X extends diffusion 6-DOF grasping to cross-embodiment via swept-volume gripper encoding, trained on procedural grippers and 2B grasps, claiming best zero-shot generalization to novel grippers in sim and real tests.

InSight: Self-Guided Skill Acquisition via Steerable VLAs

cs.RO · 2026-06-23 · unverdicted · novelty 5.0

InSight enables autonomous acquisition of manipulation primitives in VLAs via automated segmentation for steerability and a VLM-guided data flywheel that generates and integrates new demonstrations for tasks like pouring and sweeping.

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