Google Universal Commerce Protocol (UCP) vs Mastercard Agent Pay

Side by side on the same benchmark criteria.

Add a toolUp to 4 at once.

Criteria	GU Google Universal Commerce Protocol (UCP)	MA Mastercard Agent Pay
Weighted Score	3.3/5	2.6/5
Pricing	Open protocol, no licence fee	Standard card interchange; no agentic-specific fee published
Platform Type	Open commerce protocol	Agentic payments network
Agent Checkout & Payment Protocol	4.0/5	4.0/5
Merchant Catalogue Integration	3.5/5	2.0/5
Conversion & Basket Economics	3.5/5	3.0/5
Trust, Fraud & Consumer Protection	3.5/5	4.5/5
Publisher/Brand Revenue Models	2.0/5	2.5/5
Platform Reach & Demand Access	4.5/5	3.5/5
Analytics & Attribution	3.5/5	3.0/5
Integration & Onboarding Effort	3.5/5	4.0/5
Standards & Interoperability	4.5/5	4.0/5
Strengths	✓ Open standard rather than a proprietary walled garden ✓ Cart transfer lets merchants keep their own checkout	✓ Global acceptance removes payment-rail risk ✓ Tokenisation limits credential exposure
Limitations	✗ No publisher-specific solution ✗ Value to publishers is dependent on their commerce model	✗ No dedicated publisher solution ✗ Value depends on the wider agentic commerce ecosystem maturing

Google Universal Commerce Protocol (UCP)

3.3

Rating

★ 3.3/5

Pricing

Open protocol, no licence fee

Platform

Open commerce protocol

Scores

Agent Checkout & Payment Protocol

4.0

Merchant Catalogue Integration

3.5

Conversion & Basket Economics

3.5

Trust, Fraud & Consumer Protection

3.5

Publisher/Brand Revenue Models

2.0

Platform Reach & Demand Access

4.5

Analytics & Attribution

3.5

Integration & Onboarding Effort

3.5

Standards & Interoperability

4.5

Strengths

✓ Open standard rather than a proprietary walled garden

✓ Cart transfer lets merchants keep their own checkout

Limitations

✗ No publisher-specific solution

✗ Value to publishers is dependent on their commerce model

Mastercard Agent Pay

2.6

Rating

★ 2.6/5

Pricing

Standard card interchange; no agentic-specific fee published