Briefkeeper — From conversation to clarity

Briefkeeper helps independent designers and small creative agencies capture a usable brief during a voice conversation. It organizes objective, audience, deliverables, visual direction, timing, constraints and budget into seven editable fields. Each accepted AI update includes an exact quote from the client transcript. Unknown details remain open questions. Designers can inspect source statements, edit fields, review change history and export Markdown or JSON. New client speech resets existing review approvals so a later correction cannot silently retain an old approval. Empty or malformed tool updates are rejected. The browser streams speech to AssemblyAI Voice Agent API and plays spoken replies. Six interface and conversation language options, language-matched narrators and adjustable playback volume are available. Recognition has not been validated in every language. Short-lived tokens come from a protected endpoint, keeping the API key server-side. The hosted prototype requires a private reviewer access code and limits sessions to three minutes. A clearly labeled fictional example works without a microphone. Automated tests cover source validation, corrections, review invalidation, language selection and volume bounds. A current synthetic Portuguese test exercised the live API and populated three fields while unknown timing and budget remained empty. This does not replace physical-microphone and subjective audio testing. Quote matching provides traceability, not guaranteed semantic correctness. Human review remains essential. No customer outcomes are claimed.