# Oishii UCP Agentic Commerce Endpoint

**Canonical:** https://apis.io/apis/oishii/oishii-ucp-agentic-commerce-endpoint/  
**Provider:** Oishii — https://apis.io/providers/oishii/  
**Base URL:** https://oishii.com/api/ucp/mcp  
**Documentation:** https://oishii.com/.well-known/ucp

Oishii UCP Agentic Commerce Endpoint is one of 2 APIs that [Oishii](https://apis.io/providers/oishii/) publishes on the [APIs.io](https://apis.io/) network. Tagged areas include Universal Commerce Protocol, Agent Commerce, Checkout, Payments, and MCP. The published artifact set on APIs.io includes API documentation.

Universal Commerce Protocol (UCP) endpoint for agent-driven purchasing from the Oishii store, advertised in the merchant profile at https://oishii.com/.well-known/ucp with supported protocol versions 2026-04-08 and 2026-01-23. It declares the cart, checkout, fulfillment, discount, order and catalog capabilities, plus Google Pay and Shopify card payment handlers. The MCP transport at /api/ucp/mcp is gated: an unauthenticated tools/list returns HTTP 422 with JSON-RPC error -32001 invalid_profile_url, because UCP requires the calling agent to present a profile URI. Checkout completion requires contemporaneous human buyer approval.

## Machine-readable artifacts (2)

- **Documentation** — https://oishii.com/agents.md
- **WellKnown** — https://raw.githubusercontent.com/api-evangelist/oishii/refs/heads/main/well-known/oishii-well-known.yml

## Other Oishii APIs (1)

- [Oishii Storefront MCP Server](https://apis.io/apis/oishii/oishii-storefront-mcp-server/)

## Tags

Universal Commerce Protocol, Agent Commerce, Checkout, Payments, MCP

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Profiled by [API Evangelist](https://apievangelist.com) and published on [APIs.io](https://apis.io/apis/oishii/oishii-ucp-agentic-commerce-endpoint/). The API's provider profile, Kin Score and agent-readiness rating are at https://apis.io/providers/oishii/.