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@xpaysh/ucp-schemas

v0.2.0

Published

Universal Commerce Protocol (UCP) schemas + business-profile generator. Emits the JSON body for /.well-known/ucp per Google's UCP profile guide and ucp.dev specification. Ships real JSON Schemas vendored from Universal-Commerce-Protocol/ucp (83 files: dis

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Links

Git

Maintainers

xpayaixpayai

Keywords

agentic-commerceucpuniversal-commerce-protocoljson-schemaopenapirfc-9421ai-agentscheckout

Readme

@xpaysh/ucp-schemas

JSON Schemas for the Universal Commerce Protocol (UCP), packaged as a versioned, npm-installable dependency for the agentic-commerce-for-* plugin family and any third-party consumer.

Vendor-neutral. Tracks the canonical upstream spec — we do not modify schemas, only mirror them with stable versioning.

Status

  • v0.0.x — namespace and package shape. No schema content yet. Use this release to verify your import path; do not rely on schemas having entries.
  • v0.1.0 — first schema content drop. Lifted from the upstream source/schemas/ directory and source/services/shopping/openapi.json. Pinned via SPEC_VERSION.
  • Future revisions tag a new minor version per upstream dated revision.

Install

npm install @xpaysh/ucp-schemas

Usage

import { SPEC_VERSION, SPEC_URL, getSchema, schemas } from '@xpaysh/ucp-schemas';

console.log(SPEC_VERSION); // '2026-04-08'

// v0.1.0+:
// const cartSchema = getSchema('cart');
// const result = validate(cartSchema, payload);

Versioning policy

The package version tracks the package shape, not the spec. SPEC_VERSION always identifies which upstream revision the bundled schemas come from. New upstream revisions → minor bump (additive). Breaking package-API changes → major bump.

Upstream

  • Spec repo: Universal-Commerce-Protocol/ucp
  • Current revision tracked: 2026-04-08
  • Notable: UCP normatively requires HTTP Message Signatures (RFC 9421) for request integrity. Signature-related schemas (Signature, Signature-Input, Content-Digest payloads) ship in v0.1.0.
  • MCP / A2A binding shapes are included in v0.1.0.

License

Apache-2.0. Schema content (when added in v0.1.0) inherits the upstream spec's Apache-2.0 license.

See also