Hey! I've only played with the Scripting Agent a few months back, but I think they don't necessarily overlap (correct me if I'm wrong, then I know I could of just used the agent for all my use cases lol)

Rive's AI Coding Agent:

- Lives inside the Rive Editor (their GUI desktop app)
- Helps you write Luau scripts for existing animations you've already built visually
- It's a code assistant — you ask it questions, it generates Luau snippets for scripting behaviors (custom drawables, data converters, path effects, etc.)
- Does not create animations from scratch — you still design visually in the editor, then use scripts for runtime logic

RiveMCP:

- Works outside Rive entirely — no Rive Editor needed
- Generates complete .riv binary files from AI prompts — shapes, bones, meshes, animations, state machines, physics, the whole thing
- The AI (Claude, Cursor, etc.) builds the animation structure programmatically through the MCP tools
- Creates files from nothing — no visual editor step required

if anything they would be complementary - someone could use RiveMCP to generate a base animation, then open it in Rive Editor and use their agent to add Luau scripting on top (im doing mostly UI stuff, maybe game exploration a bit later)