References
Curated links, standards, and further reading for agent experience design.
Standards & Specifications
| Resource | URL | Description |
|---|---|---|
| AX Design Standard | axd.md | 12 principles, 15 primitives, anti-patterns, scoring |
| MCP Specification | modelcontextprotocol.io | Model Context Protocol for connecting agents to tools |
| A2A Protocol | github.com/google/A2A | Agent-to-Agent communication protocol |
| auth.md | workos.com/auth-md | Agent authentication protocol |
| llms.txt | llmstxt.org | Standard for AI-friendly site descriptions |
| agents.json | agents.json | Agent capability registry format |
| AgentReady Standard | agentready.org | Open standard for agent readiness |
| OpenAPI 3.1 | spec.openapis.org | API description specification |
| RFC 8414 | tools.ietf.org | OAuth Authorization Server Metadata |
| RFC 9427 | tools.ietf.org | structured suffixes for API versioning |
| RFC 9421 | tools.ietf.org | HTTP Message Signatures (Web Bot Auth) |
| x402 Payment Protocol | x402.org | HTTP 402 Payment Required protocol for agents |
Assessment & Scoring
| Resource | URL | Description |
|---|---|---|
| ora.ai | ora.ai | Agent readiness scoring and ranking (11,000+ sites) |
| ora.ai Methodology | ora.ai/methodology | How ora scores across 5 layers and 110 checks |
| AX Scoring Rubric | github.com/souls-zip/ax | Score any site across 15 primitives (0-30 scale) |
Key Articles & Talks
Foundational
- Matt Biilmann, “Introducing AX” (Jan 2025) — The original AX formulation: biilmann.blog/articles/introducing-ax
- Matt Biilmann, “One Year of AX” (Jan 2026) — Reflections on the first year: biilmann.blog/articles/one-year-of-ax
- Sean Roberts, “AX: The Next Evolution in UX” (Mar 2025) — agentexperience.ax/all/ax-the-next-evolution-in-ux
- Zeno Rocha, “What is AX and How to Improve It” (Feb 2025) — resend.com/blog/agent-experience
Agent-Native Architecture
- Builder.io, “Agent-Native: The Next Architecture for Software” (May 2026) — builder.io/blog/agent-native-architecture
- Every, “Agent-Native Architectures” — every.to/guides/agent-native
- Microsoft Design, “UX Design for Agents” — microsoft.design/articles/ux-design-for-agents
Auth & Identity
- WorkOS, “auth.md: Agent Auth is the Last Mile” (May 2026) — workos.com/auth-md
- ora.ai, “Agent auth is the last mile, and auth.md is the first real path through it” — ora.ai/blog/deep-scan-v1-2
- Descope, “Securing Your APIs with Progressive Scoping” — descope.com/blog/post/progressive-scoping
Industry Reports
- ora.ai, “The State of Agent Readiness” (Apr 2026) — ora.ai/blog/state-of-agent-readiness-2026
- Stytch, “The Age of Agent Experience” (Feb 2025) — stytch.com/blog/the-age-of-agent-experience
Community & Discussion
| Resource | URL |
|---|---|
| AX Community Discussions | github.com/orgs/agentexperience/discussions |
| AX Standard (Open Source) | github.com/souls-zip/ax |
| MCP Community | modelcontextprotocol.io/community |
Comparison of Agent Protocols
| Protocol | What it solves | Direction | Status |
|---|---|---|---|
| MCP | Agent ↔ Tool | Agent calls tools on a service | Adopted by Anthropic, OpenAI, others |
| A2A | Agent ↔ Agent | Agents delegate tasks to other agents | Proposed by Google |
| x402 | Agent ↔ Payment | Agents pay for API access | Adopted by Coinbase, AWS Bedrock |
| auth.md | Agent ↔ Auth | Agents authenticate on behalf of users | Proposed by WorkOS |
| agents.json | Agent ↔ Discovery | Agents discover service capabilities | Proposed |
| llms.txt | Agent ↔ Context | Agents understand what a service does | Widely adopted |
| Arazzo | Agent ↔ Workflow | Agents execute multi-step API workflows | OpenAPI Initiative standard |
Books & Longer Reads
- OpenAI, “A Practical Guide to Building Agents” — openai.com/business/guides-and-resources/a-practical-guide-to-building-ai-agents
- Anthropic, “Building Effective AI Agents: Architecture Patterns and Implementation Frameworks” — resources.anthropic.com
- Mockplus, “The Ultimate Guide to Agent Experience Design in 2025” — mockplus.com/blog/post/ultimate-guide-to-agent-experience-design