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Tools2026-07-10 · source-backed
Simon Willison shipped it July 9 for issue #1521: the default OpenAI plugin converted arguments=None to an empty string then called json.loads(""), crashing on any provider returning null arguments for a zero-argument tool call. He found it running llm -m meta-ai/muse-spark-1.1 -T llm_time 'time?' against his brand-new llm-meta-ai plugin. Meta's API surfaced the bug within a day of launch. If you maintain an OpenAI-compatible client that talks to anything other than OpenAI, go audit for exactly this class of bug right now.
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Simon Willison uses Claude / Shared entities / Same source domain / What happened next
Linked by a graph relationship (Simon Willison uses Claude); both cover July, None, OpenAI, Simon Willison; reported by the same outlet (simonwillison.net).
Simon Willison uses Claude / Shared entities / Same source domain / Shared topic / What happened next
Linked by a graph relationship (Simon Willison uses Claude); both cover Meta, OpenAI, Simon Willison; reported by the same outlet (simonwillison.net).
Meta released Muse Spark / Shared entities / Same source domain / Shared topic / What happened next
Linked by a graph relationship (Meta released Muse Spark); both cover July, OpenAI, Simon Willison; reported by the same outlet (simonwillison.net).
Simon Willison released LLM / Shared entities / Same source domain / Shared topic / What happened next / Tension
Linked by a graph relationship (Simon Willison released LLM); both cover OpenAI, Simon Willison; reported by the same outlet (simonwillison.net).
Anthropic partners with OpenAI / Shared entities / Same source domain / Shared topic / What happened next / Tension
Linked by a graph relationship (Anthropic partners with OpenAI); both cover July, OpenAI; reported by the same outlet (simonwillison.net).
Meta uses Gemini / Shared entities / Same source domain / What happened next / Tension
Linked by a graph relationship (Meta uses Gemini); both cover July, OpenAI, Simon Willison; reported by the same outlet (simonwillison.net).
Simon Willison uses Fable / Shared entities / Same source domain / What happened next
Linked by a graph relationship (Simon Willison uses Fable); both cover July, OpenAI, Simon Willison; reported by the same outlet (simonwillison.net).
OpenAI uses Artifactory / Shared entities / Same source domain / What happened next
Linked by a graph relationship (OpenAI uses Artifactory); both cover July, OpenAI, Simon Willison; reported by the same outlet (simonwillison.net).