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arxiv: 2605.27366 · v1 · pith:GSWXHLDXnew · submitted 2026-05-26 · 💻 cs.AI · cs.CL· cs.LG· cs.MA

MUSE-Autoskill: Self-Evolving Agents via Skill Creation, Memory, Management, and Evaluation

Pith reviewed 2026-06-29 17:38 UTC · model grok-4.3

classification 💻 cs.AI cs.CLcs.LGcs.MA
keywords LLM agentsskill creationskill memoryagent evolutionskill evaluationself-improving agentsSkillsBench
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0 comments X

The pith

Agents improve task performance by managing skills through a full lifecycle of creation, memory, evaluation and refinement.

A machine-rendered reading of the paper's core claim, the machinery that carries it, and where it could break.

The paper introduces MUSE-Autoskill, a framework that lets LLM agents create skills when needed, store them with accumulated experience across tasks, organize them for selection, evaluate them using unit tests and runtime feedback, and refine them continuously. This unified lifecycle treats skills as reusable, long-lived assets instead of isolated static items. The approach aims to enable ongoing improvement in solving complex tasks. Experiments on SkillsBench indicate gains in success rates, efficiency, skill reuse, and transfer to other agents.

Core claim

By unifying skill creation on demand, skill-level memory for experience accumulation, management for organization and selection, evaluation through unit tests and runtime feedback, and refinement, agents can continuously evolve their capabilities as long-lived, experience-aware, and testable assets.

What carries the argument

The skill lifecycle of creation, memory, management, evaluation, and refinement, with skill-level memory that accumulates experience for each skill across tasks.

If this is right

  • Skills become reusable across multiple tasks instead of being recreated each time.
  • Runtime feedback and unit tests drive ongoing refinement of individual skills.
  • Experience accumulated in skill-level memory improves adaptation when the same skill is reused.
  • Skills developed by one agent can transfer effectively to other agents.
  • Task solving shows higher success rates and lower resource use over repeated interactions.

Where Pith is reading between the lines

These are editorial extensions of the paper, not claims the author makes directly.

  • The framework could reduce reliance on retraining base models by shifting improvement to the skill layer.
  • Similar lifecycle structures might apply to other reusable components such as plans or tool sets.
  • Longer-running agent deployments would test whether refinement continues to yield gains without external intervention.

Load-bearing premise

Agents can create skills on demand and refine them meaningfully using only unit tests and runtime feedback without further human oversight.

What would settle it

Experiments on SkillsBench that compare the lifecycle-managed approach against static skills show no gains in task success rate, efficiency, reuse, or cross-agent transfer.

read the original abstract

Large language model (LLM) agents rely on reusable skills to solve complex tasks. However, existing skill creation approaches treat skills as isolated and static artifacts, limiting their reusability, reliability, and long-term improvement. We propose MUSE-Autoskill Agent (Memory-Utilizing Skill Evolution), a skill-centric agent framework that lets agents continuously improve their task-solving capability by creating, reusing, and refining skills under a unified lifecycle (creation, memory, management, evaluation, and refinement). Our framework enables agents to create skills on demand, store and reuse them across tasks, organize and select them efficiently, and evaluate them through unit tests and runtime feedback for continuous refinement. We further introduce skill-level memory that accumulates experience for each skill across tasks, enabling more effective reuse and adaptation over time. Experiments on SkillsBench provide initial evidence that lifecycle-managed skills can improve task success, efficiency, reuse, and cross-agent transfer, highlighting the importance of treating skills as long-lived, experience-aware, and testable assets.

Editorial analysis

A structured set of objections, weighed in public.

Desk editor's note, referee report, simulated authors' rebuttal, and a circularity audit. Tearing a paper down is the easy half of reading it; the pith above is the substance, this is the friction.

Referee Report

2 major / 2 minor

Summary. The manuscript proposes MUSE-Autoskill, a skill-centric framework for LLM agents that enables continuous capability improvement via a unified lifecycle of skill creation, memory storage, management, evaluation, and refinement. It introduces skill-level memory to accumulate cross-task experience for each skill and claims that experiments on SkillsBench provide initial evidence of gains in task success, efficiency, reuse, and cross-agent transfer when skills are treated as long-lived, experience-aware, and testable assets.

Significance. If the experimental claims hold after details are supplied, the work could meaningfully advance autonomous agent research by shifting from static, isolated skills to dynamically managed ones with built-in evaluation and memory. The skill-level memory construct is a clear conceptual contribution that addresses long-term adaptation, and the unified lifecycle framing offers a coherent organizing principle for future systems.

major comments (2)
  1. [Abstract, §3] Abstract and §3 (Framework): the central claim that unit tests plus runtime feedback drive meaningful continuous refinement without human oversight rests on unspecified mechanisms; no concrete procedure, prompt template, decision rule, or guardrail is given for translating test failures into skill edits, so observed gains cannot be attributed to the proposed lifecycle rather than base LLM capabilities.
  2. [Abstract, §4] Abstract and §4 (Experiments): the statement that 'experiments on SkillsBench provide initial evidence' of improved success, efficiency, reuse, and transfer supplies no methods, baselines, quantitative results, error analysis, or ablation, rendering it impossible to evaluate whether the data supports the load-bearing claim that lifecycle-managed skills are responsible for the gains.
minor comments (2)
  1. [§3.1] Notation for skill-level memory is introduced without a formal definition or pseudocode, which would aid reproducibility.
  2. [Abstract] The abstract uses 'initial evidence' without clarifying the scale of SkillsBench or number of tasks/agents evaluated.

Simulated Author's Rebuttal

2 responses · 0 unresolved

We thank the referee for the constructive feedback and for recognizing the potential conceptual contributions of the skill-level memory and unified lifecycle. We address the two major comments below and will incorporate the requested details into the revised manuscript.

read point-by-point responses
  1. Referee: [Abstract, §3] Abstract and §3 (Framework): the central claim that unit tests plus runtime feedback drive meaningful continuous refinement without human oversight rests on unspecified mechanisms; no concrete procedure, prompt template, decision rule, or guardrail is given for translating test failures into skill edits, so observed gains cannot be attributed to the proposed lifecycle rather than base LLM capabilities.

    Authors: We agree that the current description of the refinement process in §3 is high-level and lacks the requested implementation specifics. In the revision we will add the concrete prompt templates for generating skill edits from unit-test failures and runtime feedback, the decision rules that determine when and how an edit is applied, and the guardrails that keep the process autonomous. These additions will make it possible to attribute observed gains to the lifecycle rather than base LLM behavior. revision: yes

  2. Referee: [Abstract, §4] Abstract and §4 (Experiments): the statement that 'experiments on SkillsBench provide initial evidence' of improved success, efficiency, reuse, and transfer supplies no methods, baselines, quantitative results, error analysis, or ablation, rendering it impossible to evaluate whether the data supports the load-bearing claim that lifecycle-managed skills are responsible for the gains.

    Authors: We accept that the experimental reporting in §4 is insufficient for rigorous evaluation. The revised manuscript will expand this section with complete methods, the full set of baselines, all quantitative results (including means, variances, and statistical tests), error analysis, and ablation studies that isolate the contribution of skill-level memory and the evaluation-refinement loop. This will directly address whether the lifecycle is responsible for the reported gains. revision: yes

Circularity Check

0 steps flagged

No significant circularity; framework claims rest on empirical evaluation rather than self-referential reduction.

full rationale

The paper describes a proposed agent framework (MUSE-Autoskill) with a skill lifecycle and reports experimental results on SkillsBench showing improvements in success, efficiency, reuse, and transfer. No derivation chain, equations, predictions, or first-principles results are present that reduce by construction to fitted inputs, self-citations, or renamed known results. The central claims are supported by external benchmark evaluation of the implemented system, with no load-bearing self-citation chains or self-definitional loops identified in the abstract or framework description.

Axiom & Free-Parameter Ledger

0 free parameters · 2 axioms · 1 invented entities

Based on abstract only; limited information available. The framework relies on domain assumptions about agent capabilities for on-demand creation and feedback-driven refinement. Introduces the new concept of skill-level memory without independent evidence provided.

axioms (2)
  • domain assumption Skills can be created on demand by the agent
    Central to the creation stage of the proposed lifecycle.
  • domain assumption Unit tests and runtime feedback suffice to drive continuous skill refinement
    Assumed for the evaluation and refinement stages to enable long-term improvement.
invented entities (1)
  • skill-level memory no independent evidence
    purpose: Accumulates experience for each skill across tasks to enable better reuse and adaptation
    New postulated component introduced to support the memory part of the lifecycle.

pith-pipeline@v0.9.1-grok · 5721 in / 1380 out tokens · 122480 ms · 2026-06-29T17:38:52.769481+00:00 · methodology

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Forward citations

Cited by 1 Pith paper

Reviewed papers in the Pith corpus that reference this work. Sorted by Pith novelty score.

  1. MUSE: A Unified Agentic Harness for MLLMs

    cs.CV 2026-06 unverdicted novelty 6.0

    MUSE is a unified agentic harness that improves off-the-shelf MLLMs on visual spatial planning, perception, multimodal reasoning, and fine-grained discrimination benchmarks through structured execution modules and ver...

Reference graph

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    Numbered list of invariants the implementation must preserve. ## Recommended tools and libraries - Concrete library names, CLI commands, or sandbox tools. ## Workflow Step-by-step procedure the agent should follow at runtime. Catalog routing.The frontmatter description field is the only piece of the skill that is surfaced eagerly: at the start of every ta...