# FormantBoard Agent Entry Primary machine-readable guide: `/llms.txt` Quick start: 1. Use `window.fb`. 2. Validate before playback (`validatePlay` / `validateFromJSON`). 3. Keep loop off by default. Only set loop when the user explicitly asks. 4. Use only supported IPA vowels: `ɑ, ɛ, ə, æ, ɔ, u, ʊ, ɪ, i`. 5. Keep melody (pitch/time/duration) stable; treat formant overrides as advanced.