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Public story · 2026-03-06 · source-backed
— "The defining characteristic of a coding agent is that it can execute the code it writes." Never assume LLM-generated code works without verification. Patterns for python -c edge case testing, /tmp demo files, browser automation with Playwright/Rodney. Red/green TDD: when agents find issues, add permanent test coverage. (simonwillison.net)
Each link below shares sources, entities, or timing with this story.
Simon Willison released Showboat / Shared entities / Same source domain / Shared topic / Earlier coverage
Linked by a graph relationship (Simon Willison released Showboat); both cover Rodney, Simon Willison; reported by the same outlet (simonwillison.net).
Simon Willison released Agentic Engineering Patterns / Shared entities / Same source domain / Shared topic / Earlier coverage
Linked by a graph relationship (Simon Willison released Agentic Engineering Patterns); both cover Simon Willison, TDD; reported by the same outlet (simonwillison.net).
Simon Willison uses Codex Desktop / Shared entities / Same source domain / Shared topic / What happened next
Linked by a graph relationship (Simon Willison uses Codex Desktop); both cover Playwright, Simon Willison; reported by the same outlet (simonwillison.net).
Simon Willison released LLM / Shared entity: Simon Willison / Same source domain / Shared topic / What happened next / Tension
Linked by a graph relationship (Simon Willison released LLM); both cover Simon Willison; reported by the same outlet (simonwillison.net).
Simon Willison released LLM / Shared entities / Same source domain / Shared topic / Earlier coverage
Linked by a graph relationship (Simon Willison released LLM); both cover Simon Willison, TDD; reported by the same outlet (simonwillison.net).
Simon Willison released datasette-agent / Shared entities / Same source domain / Shared topic / What happened next
Linked by a graph relationship (Simon Willison released datasette-agent); both cover LLM, Simon Willison; reported by the same outlet (simonwillison.net).
Simon Willison released LLM / Shared entities / Shared topic / What happened next / Tension
Linked by a graph relationship (Simon Willison released LLM); both cover LLM, Playwright; overlapping topics (agent, code, coding).
Simon Willison uses Claude Code / Shared entities / Same source domain / Shared topic / Earlier coverage
Linked by a graph relationship (Simon Willison uses Claude Code); both cover Rodney, Simon Willison; reported by the same outlet (simonwillison.net).