# Harmonia

- **Event:** [Meta Global AI Developer Hackathon](https://cerebralvalley.ai/e/meta-ai-developer-hackathon)
- **When:** Oct 26, 12:00 PM – Nov 4, 9:00 PM (EST)
- **Where:** Online
- **Team:** [daniel asaboro](https://cerebralvalley.ai/u/disturbedcoin)
- **GitHub:** https://github.com/danielAsaboro/harmonia-meta
- **Demo video:** https://www.youtube.com/watch?v=Mfrmh9ZC62I
- **Gallery:** https://cerebralvalley.ai/e/meta-ai-developer-hackathon/hackathon/gallery
- **Page:** https://cerebralvalley.ai/e/meta-ai-developer-hackathon/hackathon/gallery/4526

Harmonia is a marketing team of Meta-model agents for startups. 

It turns what you already have, your website, a talk, a launch page, into posts and narrated videos that say only what's true, and nothing goes out without your yes.

We built Harmonia for this hackathon from two years of hands-on content-marketing work, and one lesson from it: strategy is rarely the bottleneck; execution is. 

Marketing only works with a steady weekly cadence, but every post means finding the moment, adapting it, checking every claim and waiting on review. 

For a small team that becomes a second full-time job, while their best ideas stay buried in demos, talks and calls. Small-business owners lose 6+ hours a week to social media (VerticalResponse survey). 

The alternative is an agency at around $500 to $2,000 a month. 

Cheap AI copy is worse: 69% of people worry AI content is wrong, and 32% trust a brand less when they catch it (Meltwater/YouGov). 

Harmonia runs a full campaign for $0.13 to $0.28.

How it works, end to end:

1. Paste your website. Muse Spark reads it, Meta's web_search finds competitors and real customer complaints, and Muse Wonder writes a cited brand brief. For cal.com: 71 seconds, $0.18, every pain quote linked to its source, unverified research dropped.

2. Ask in plain language. Nimi (Muse Spark) finds grounded angles, Ryan (Muse Wonder) proposes a strategy you approve by exact version, Noni drafts LinkedIn and X posts that cite the brief, and Dara reviews every draft against seven checks.

3. Video from a talk: Muse Voice Transcribe hears it, Muse Spark watches it and anchors moments to real frames, SAM 3.1 keeps the speaker in a vertical crop. Muse Spark then grades each clip blind; a low score triggers one re-cut. In a live run, 48/100 became 82/100.

4. Video with no footage: Muse Spark writes the scenes, Muse Image draws each frame, Meta's open-weight MMS voice narrates, and ffmpeg cuts a 9:16 MP4. Voice Transcribe listens back, and a narration that doesn't match the script fails the render (our demo: 0.98 word match).

Most AI marketing tools make one step easier: a carousel, an ad, a listing. Harmonia runs the whole loop, website to cited brief to approved drafts to graded, narrated video, with one source of truth and a human gate at every release.

Built for trust:

- Other agents can hire Harmonia over MCP or A2A, but their token gets 403 on every approval route. Agents prepare; only you release.

- Teach a rule once ("never use hashtags, end with a question") and every later strategy cites it.

- Untrusted sources are screened for injected instructions. On 22 labelled cases, rules alone caught 7 of 12; adding open-weight Muse Glimmer locally caught 12 of 12, with 0 of 10 clean texts withheld.

Proof, live on Meta Model API: seven end-to-end runs at $0.13 to $0.28, three concurrent campaigns verified, 1,073 agent and 948 web tests. Every run, cost and Meta request ID: https://harmonia-meta.vercel.app/proof

## More from Meta Global AI Developer Hackathon

- [Recursion Lab](https://cerebralvalley.ai/e/meta-ai-developer-hackathon/hackathon/gallery/4523)
- [Ronce](https://cerebralvalley.ai/e/meta-ai-developer-hackathon/hackathon/gallery/4524)
- [Kyrylo Olkhovskyi](https://cerebralvalley.ai/e/meta-ai-developer-hackathon/hackathon/gallery/4525)
- [Valerius](https://cerebralvalley.ai/e/meta-ai-developer-hackathon/hackathon/gallery/4527)
- [LearnQuiz](https://cerebralvalley.ai/e/meta-ai-developer-hackathon/hackathon/gallery/4528)
- [Metantel](https://cerebralvalley.ai/e/meta-ai-developer-hackathon/hackathon/gallery/4529)

---

Markdown version of https://cerebralvalley.ai/e/meta-ai-developer-hackathon/hackathon/gallery/4526. Site index for agents: https://cerebralvalley.ai/llms.txt · full text: https://cerebralvalley.ai/llms-full.txt