AI Coding Agents Changed Design Handoff — Here's the New Playbook

When Claude Code or Codex implements your Figma in hours, handoff becomes continuous review — not a one-time spec dump.

The old handoff: final Figma, PDF spec, then silence until staging. The 2026 handoff: living tokens, annotated components, and agent-generated PRs all week. Designers who treat AI coding agents as part of the pipeline — not a threat — ship more consistent UI with less burnout on both sides.

What to put in writing for agents

Spacing scale, type ramp, and color tokens (Figma variables → code names).
Interactive states: hover, focus, disabled, loading, error, empty.
Breakpoint behavior — not just a single mobile artboard.
Do-not-automate list (brand moments, marketing hero, illustrations).

Review rhythm

Short daily or per-PR design pass beats a big review at the end. Use staging links, screenshot diff tools, and a11y checkers. Agents will get typography 90% right and miss the 10% users notice first.

When to push back

Reject agent output that invents new components, drops focus states, or ships placeholder copy in production paths. File issues against the skill/spec, not only the developer — fix the instruction loop.

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