Founder Letter Audio
Turn a polished monthly founder letter into an MP3 for subscribers using ElevenLabs TTS through MCP with usage caps enforced.
Overview
founder-letter-audio is an MCP server for the Grow phase that converts an edited founder letter to MP3 using ElevenLabs TTS with pre-flight voice and scrubber gates.
What is this MCP server?
- Renders Cooper-edited founder letter text to MP3 via ElevenLabs TTS
- Voice-gate and scrubber are HARD gates before any cloud TTS call
- Pinned voice Sarah (EXAVITQu4vr4xnSDxMaL) and model eleven_multilingual_v2
- Tracks character usage against ElevenLabs 10K-char free-tier monthly cap
- MIT DailyAI federation skill with audio, founder, letter, monthly, voice tags
- Pinned voice Sarah ID EXAVITQu4vr4xnSDxMaL
- 10,000-character free-tier monthly cap tracked by the skill
What problem does it solve?
Recording founder updates is slow, and sending raw letter text to TTS risks quota waste, policy issues, and inconsistent voice branding.
Who is it for?
Indie founders publishing recurring investor or community letters who want ElevenLabs audio without manual studio work.
Skip if: Builders without ElevenLabs access, one-off podcasts needing multi-speaker mixing, or teams that skip editorial scrubbing.
What do I get? / Deliverables
After registration, you get a gated, metered path from letter draft to branded MP3 your agent can produce on a monthly rhythm.
- MP3 audio file of the founder letter
- Usage accounting against monthly character allowance
- Cloud calls only after voice-gate and scrubber hard checks
Recommended MCP Servers
Journey fit
How it compares
ElevenLabs letter-to-MP3 MCP pipeline, not a general music generator or newsletter writing skill.
Common Questions / FAQ
Who is founder-letter-audio for?
Solo founders and small teams shipping monthly founder letters who want MCP-driven MP3 versions for email or audio feeds.
When should I use founder-letter-audio?
Use it in Grow after the letter is Cooper-edited and you are ready to publish an audio edition under your ElevenLabs quota.
How do I add founder-letter-audio to my agent?
Configure the MCP server from dailyai-os skills/founder-letter-audio, set your ElevenLabs API credentials per publisher docs, and invoke only after voice-gate and scrubber pass.