Dev builds screen-reader Unity plugin using Codex AI, shares accessibility lessons
A blind developer has spent the past week building Unity Access, a plugin that makes the Unity Editor compatible with the NVDA screen reader by bridging the two APIs. The project was coded almost entirely using OpenAI's Codex running GPT-4.5 Sol, prompting the developer to share practical lessons learned along the way. A key takeaway is that achieving accessibility with AI requires precise, testable behavioural instructions rather than vague prompts like 'make it accessible'. The developer also relied on VS Code for writing specification files due to its strong out-of-the-box NVDA compatibility, enabling independent navigation and code review. Setting detailed boundaries in a root AGENTS.md file — covering permitted file changes, required APIs, and completion criteria — was highlighted as critical to getting consistent, predictable results from the model.
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