onzero MCP-The professional content-creation workflow — from any MCP client
1Connect
Add onzero as an MCP server in your client — Claude, Codex, Cursor or any other:
https://onzero.ai/mcpAuthorization: Bearer oz_xxxxxxxxxxxxxxxxFrom the moment you connect, your client gets 67 tools + the professional workflow rules — nothing to explain.One command in your terminal:
claude mcp add --transport http onzero https://onzero.ai/mcp --header "Authorization: Bearer oz_..."2The Claude Skill
The connection gives Claude the tools. The skill gives it the judgment in between.
The skill adds no capabilities — same tools, same models. What it changes is how many attempts it takes to get there: what to ask before generating, how to plan a multi-step production, when to fix a result instead of shipping it. Fewer regenerations, fewer wasted credits.
Check it works: ask for "an Instagram post and a story for my brand". Working — Claude asks about the brand, the exact copy and the platform before generating, then produces one master and adapts it to the second size. Not working — it generates two separate images straight away.
This is a local copy that does not update itself. The skill tells Claude to call list_video_models and friends for the live list, so it degrades gracefully — but re-download when new capabilities ship.
3The fixed workflow
This is what correct work looks like, brief to deliverable.
Character — once, locked forever
Exact artwork goes in as reference via create_character, stored pixel-perfect. Every image and video keeps the identity.
Brand assets
Need a logo that doesn't exist? Claude asks for it, saves via create_asset, and uses it exactly in every future creation.
Master, then adapt
One approved master → adapt_image_size reproduces the exact design at every ratio. Never regenerate per size.
Video — consult before generating
Claude presents 2–3 model + technique options with trade-offs — you choose. Per-model stability scaffolding applies automatically.
Full sound
Voiceover (in the character's voice!), music, songs with lyrics and SFX — then add_audio_to_video scores any clip.
Quality gate
Text verbatim? Identity preserved? No artifacts? Fix until it passes. Never ship "almost right".
4Video models
Always available via list_video_models — with live pricing.
| Model | Best for | Durations | Capabilities | Credits / 5s |
|---|---|---|---|---|
| Veo 3.1 | Cinematic quality, synced dialogue & SFX | 4/6/8s | Audio End frame | 34 |
| Seedance 2.0 | Best identity consistency, multi-shot, mascots | 4–15s | End frame | 200 |
| Kling v3 | Expressive character motion, up to 6 shots | 4–15s | Audio End frame | 57 |
| Hailuo 2 Pro | Physics, [Push in] camera control | 6s | End frame | 64 |
| Runway Gen-4.5 | Clean single-scene reliability | 5/10s | 80 | |
| PixVerse 4.5 | Stylized / anime, 20+ camera moves | 5/8s | 27 | |
| Wan I2V | Faithful image animation, budget | ~5s | 54 | |
| Luma Modify | Restyle existing footage (V2V) | — | 74 |
5Sound models
Available via list_audio_models. Character selected? The voiceover speaks in their voice.
| Model | Category | Best for |
|---|---|---|
| Gemini Voice | Voiceover | Fast, multilingual, character voice |
| ElevenLabs v3 | Voiceover | Most natural — ads & trailers |
| MiniMax Speech | Voiceover | 300+ voices, 30+ languages |
| Lyria 2 | Music | Google, 48kHz, negative prompt |
| Stable Audio 2.5 | Music | Up to ~3 min in one generation |
| ACE-Step | Music | Drafts & loops — cheapest |
| MiniMax Music | Song | Vocal songs — [Verse]/[Chorus] |
| ElevenLabs SFX | SFX | Text-to-sound-effects |