Agent commerce protocols
llms.txt, agents.md, Schema, UCP: What Actually Matters?
A practical ranking of agent-facing files, schema, policies, and protocols for AI shopper outcomes.
Updated June 6, 2026 · 8 min
Short answer
All of these surfaces can help, but none of them replaces clear product and policy evidence tied to real buyer scenarios.
- Schema helps machines parse product facts.
- Agent files guide discovery.
- UCP exposes capabilities.
- Scenarios prove outcomes.
How to prioritize
Fix the surfaces that correspond to failed scenarios before chasing every new file format.
- Start with product facts.
- Clarify policies.
- Add structured data.
- Validate protocol discovery.
Turn this into a real scenario report
Run an audit to see transcripts, competitor outcomes, evidence gaps, and rerun recommendations for your own store.
Run a shopper audit