# Agent Experience (AX)

> The discipline of designing products and websites so that AI agents can use them effectively — the agent-era counterpart to UX.

_The Agentic Web Lexicon · /glossary/agent-experience · [JSON](/api/glossary/agent-experience) · [all The Agentic Web Lexicon](/glossary)_

- **term:** Agent Experience (AX)
- **category:** optimization
- **short_def:** The discipline of designing products and websites so that AI agents can use them effectively — the agent-era counterpart to UX.
- **long_def:** Coined by Netlify CEO Matt Biilmann in January 2025. AX asks: when an agent (not a human) is the user, can it discover what your service does, understand its options, take action, and have its principal trust the result? Biilmann's framework has four pillars — Access, Context, Tools and Orchestration.
- **see_also:** agentic-web, intent-preview, action-audit
- **etymology_origin:** Coined by Matt (Mathias) Biilmann, co-founder and CEO of Netlify, in his essay 'Introducing AX: Why Agent Experience Matters', published January 2025.
- **related_to:** agentic-web, intent-preview, action-audit, accessibility-tree, geo
- **contrast_with:** Unlike UX (user experience), which optimizes for a human at the screen, AX (agent experience) optimizes for an AI agent as the primary user class — discovery, machine-readable context and callable tools rather than visual layout.
- **example:** Netlify positioned AX as its 'North Star for the next decade', following the essay Biilmann published in January 2025.
- **source:** https://biilmann.blog/articles/introducing-ax/
- **status:** emerging
- **why_it_matters:** AX is the umbrella discipline under which agent-readiness engineering sits; it reframes site quality from 'how it looks to a human' to 'how usable it is to an agent'.
- **sameAs:** —
- **bridge_entity:** agent-readiness
- **last_verified:** 2026-06-15
- **md_twin:** /glossary/agent-experience.md