CodexSpark turns agent output into strict visual contracts.

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Ready

Generate a typed interface spec.

Active runtime is Claude. New output renders below as prose plus any `json-render` blocks the assistant returns.

JSON Contract

Schema and rules

Valid

{
  "root": "render-stream",
  "schema": "json-render",
  "status": "validated",
  "components": ["Card", "Chart", "Grid"],
  "fallback": "typed parse error"
}

0messages

5rules shown

Treat front-end output as evidence: first-frame clarity must show contrast, hierarchy, state, and action.

Keep one strong visual language per route; sibling modules should support the same narrative, not compete with it.

Every render spec is a contract: typed props, semantic units, deterministic output, and fallback path are required.

Use explicit status language over decoration; motion must explain state transitions, urgency, or intent.

Charts must always include clear titles, axis labels, units, and source assumptions in-band.