UCP Playground
Open testing and benchmarking environment for UCP-enabled AI agent commerce. Benchmark 11 AI models shopping real stores via MCP, REST, and ECP transports. Compare Claude, GPT, Gemini, Grok, DeepSeek, and Llama checkout rates, run multi-turn evaluations, share session replays, audit store UCP compliance, and debug integrations with full protocol visibility.
Compatible Platforms
Works with 5 platforms in the UCP ecosystem.
Explore the ecosystem
Category
Developer Tools
Maintainer
UCP Checker
Website
ucpplayground.comPlatforms
5 compatible
Registry ID
UCP-T-000014
Activity (30d)
62
Views
0
API queries
Related Tools
All toolsUCPChecker
Developer Tools
UCP Checker crawls .well-known/ucp manifests to verify whether merchants are agent-ready for agentic commerce. It provides real-time verification with public status pages, embeddable badges, a browser extension, and a full MCP server with 10 tools including cross-store product search, cart building, and checkout. AI agents can discover verified stores, browse catalogs, compare products, and complete purchases across any UCP-enabled merchant.
Mastercard Verifiable Intent
Security
Open specification for cryptographic agent authorization in commerce. Provides SD-JWT delegation chains that bind AI agent actions to human-approved scope with tamper-evident constraint enforcement. Supports eight constraint types including amount bounds, merchant allowlists, budget caps, and recurrence terms. Protocol agnostic with integration mappings for AP2, ACP, and UCP.
UCP Checker Extension
Browser Extension
Free Chrome extension that detects UCP manifests on any store you visit. Shows capabilities, payment handlers, transports, AI bot policies, and spec version in one click. Optionally contributes anonymous uptime telemetry back to UCP Checker. Works on Chrome, Edge, and Brave.