Software Self-Extension with SelfEvolve: an Agentic Architecture for Runtime Code Generation
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arXiv
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| Format: | Preprint |
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2026
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| _version_ | 1866913041586585600 |
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| author | Fahim, Md Asif Iqbal Adebayo, Oluwadamilola Ferrari, Alessio |
| author_facet | Fahim, Md Asif Iqbal Adebayo, Oluwadamilola Ferrari, Alessio |
| contents | Traditional self-adaptive systems automatically reconfigure existing components in response to changing requirements, but provide limited support for the generation of novel functionalities. The software generation capabilities of large language models (LLMs) open the possibility to create entirely new modules at runtime, enabling a form of self-evolution beyond traditional self-adaptation. We present SelfEvolve, an orchestrated agentic pipeline architecture enabling runtime self-extension--the autonomous addition of new capabilities during execution--as a preliminary form of self-evolution. Self-extension focuses on the autonomous generation and integration of new functions, based on user requests, without requiring a system restart or developer intervention. Evaluation of our architecture across 11 self-extension tasks demonstrates an average Pass@1 of 92.7% (51/55), outperforming developer-focused code generation baselines like AutoGen, MetaGPT, and AgentCoder. SelfEvolve achieves 61.8% improvement over the best baseline, i.e. Autogen, with statistical significance. This work demonstrates the feasibility of runtime capability extension through autonomous code generation. This provides preliminary evidence for a paradigm in which systems autonomously evolve to satisfy user needs, paving the way towards individualised, self-improving systems. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2604_16314 |
| institution | arXiv |
| publishDate | 2026 |
| record_format | arxiv |
| spellingShingle | Software Self-Extension with SelfEvolve: an Agentic Architecture for Runtime Code Generation Fahim, Md Asif Iqbal Adebayo, Oluwadamilola Ferrari, Alessio Software Engineering Traditional self-adaptive systems automatically reconfigure existing components in response to changing requirements, but provide limited support for the generation of novel functionalities. The software generation capabilities of large language models (LLMs) open the possibility to create entirely new modules at runtime, enabling a form of self-evolution beyond traditional self-adaptation. We present SelfEvolve, an orchestrated agentic pipeline architecture enabling runtime self-extension--the autonomous addition of new capabilities during execution--as a preliminary form of self-evolution. Self-extension focuses on the autonomous generation and integration of new functions, based on user requests, without requiring a system restart or developer intervention. Evaluation of our architecture across 11 self-extension tasks demonstrates an average Pass@1 of 92.7% (51/55), outperforming developer-focused code generation baselines like AutoGen, MetaGPT, and AgentCoder. SelfEvolve achieves 61.8% improvement over the best baseline, i.e. Autogen, with statistical significance. This work demonstrates the feasibility of runtime capability extension through autonomous code generation. This provides preliminary evidence for a paradigm in which systems autonomously evolve to satisfy user needs, paving the way towards individualised, self-improving systems. |
| title | Software Self-Extension with SelfEvolve: an Agentic Architecture for Runtime Code Generation |
| topic | Software Engineering |
| url | https://arxiv.org/abs/2604.16314 |