Ernest Ryu releases AI agent workflow that finds and reproduces SymPy bugs

The system uses Codex-era prompt strategies to scan source code.

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@fpedregosa Hi Fabian! The prompts are 'simple' but kind of long. (The prompt itself was written with Codex.) But it mostly comes down to: "Look through code and find reproducible bugs." You can find the prompt here: https://raw.githubusercontent.com/xinjiegit/agentic-bug-hunt-sympy/main/harness/prompts/shared_bug_policy.md

@fpedregosa You can also check out our PDF write-up: https://github.com/xinjiegit/agentic-bug-hunt-sympy/blob/main/report.pdf

Ashwinee Panda @ICML2026@PandaAshwinee

AP

@ErnestRyu i think anyone who has used sympy for more than 5 minutes knows how many bugs there are :D

12:56 AM · Jul 15, 2026

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Source Posts on X

@fpedregosa Hi Fabian! The prompts are 'simple' but kind of long. (The prompt itself was written with Codex.) But it mostly comes down to: "Look through code and find reproducible bugs." You can find the prompt here: https://raw.githubusercontent.com/xinjiegit/agentic-bug-hunt-sympy/main/harness/prompts/shared_bug_policy.md

@fpedregosa You can also check out our PDF write-up: https://github.com/xinjiegit/agentic-bug-hunt-sympy/blob/main/report.pdf

Ashwinee Panda @ICML2026@PandaAshwinee

AP

@ErnestRyu i think anyone who has used sympy for more than 5 minutes knows how many bugs there are :D

12:56 AM · Jul 15, 2026