Universal Commerce Protocol (UCP)
Open standard co-developed by Google and Shopify for AI agents to discover, negotiate, and transact with any merchant across the full commerce journey.
- Sato Score59
Universal Commerce Protocol (UCP) is an open-source API or SDK by Shopify & Google, with no code activity tracked. Sato Score 59/100 (how open, active and verifiable it is, not a safety grade), as of 2026-10-23. How the score works →
Check what an install would ask of your keys, before you run it →No code activity tracked
Listed from shopify.com on 2026-06-08. Install: not attempted — no install path on record. Evidence →
Next step
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https://satohub.ai/api/mcpAsk Sato Hub what is on record about Universal Commerce Protocol (UCP) before I use it.Your project?
Prove you control the domain and correct this page — description, links, tags, chains. A claim proves control, not verification: it never changes the Sato Score.
Claim this listing →Overview
The Universal Commerce Protocol (UCP) is an open-source standard developed by Google in collaboration with Shopify and other partners to standardize the full agentic commerce journey: discovery, consideration, purchase, order management, fulfillment, returns, and loyalty. It defines capability discovery and negotiation between agents and merchants and can compose with REST, MCP, AP2, and A2A. Note: an earlier draft referred to it as 'Universal Checkout Protocol'; the verified official name is 'Universal Commerce Protocol.' It is a Web2-oriented commerce standard.
Sato Score
59/100· MediumHow open, active & verifiable — not a safety or returns grade.
- Maintenance & liveness
- 20/35
- Code transparency
- 8/20
- Interface verifiability
- 0/10
- Docs & demo
- 10/10
- Listing transparency & provenance
- 13/15
- Independent verification
- 8/10
Independently verified — listing reviewed against evidence, never self-reported.
Evidence — listed vs checked · what the words mean
Listed from shopify.com on 2026-06-08. Install: not attempted — no install path on record.
| Claim | Value | Evidence | Source | Checked |
|---|---|---|---|---|
| Chains supported | not stated | self-reported | developers.google.com | as of 2026-10-23 |
| Verification status | Verifiedreview date and evidence link not recorded on this listing | ✓ reviewed | — | not dated |
| Website answers | answered (HTTP 200) | observed | shopify.com | 2026-10-23 |
| Daily check record | 90 of 90 daily checks since 2026-07-25 succeededa success rate of our checks, not uptime; the source is this listing's own history | observed | — | 2026-10-22 |
| Built by | Shopify & Googleconfidence 0.85 | self-reported | shopify.com | as of 2026-06-25 |
| Deploys as | API, MCP serverconfidence 0.70 | self-reported | shopify.com | as of 2026-06-25 |
| Works with | AP2, A2A, MCP, Shop Pay, Google Payconfidence 0.85 | self-reported | developers.google.com | as of 2026-06-25 |
| Demo available | yesconfidence 0.70 | self-reported | shopify.com | as of 2026-06-25 |
| Sato Score | 59/100 (Medium)how open, active and verifiable — not a safety or quality grade | computed | satohub.ai | 2026-10-23 |
Self-reported rows are the project’s own words, dated when we recorded them — not a check. Only reproduced and reviewed rows carry a mark. None of these rows is a safety or quality rating.
Observed record — 91 daily checks since 2026-07-25
- Succeeded
- 91
- Failed
- 0
- Their error
- 0
- Unattributed
- 0
This is the share of our daily checks that succeeded — not an availability guarantee. A check can fail because the host was down, because our runner timed out, or because the network in between dropped it, and only the first of those is a fact about this project. Failures are split by what we can attribute; anything we cannot attribute is counted, not hidden. 38 of these checks predate 2026-09-01, when the probe counted a bot-block (HTTP 403) as a failure and recorded no reason for any failure. Every one of them passed, so the rate covers them too.
Last 30 days — to 2026-10-23, one point per UTC day
A gap is a day we have no attributable observation — never a zero. Thirty points is the whole shape the free layer carries; the daily rows behind it stay in the snapshot series.
Details
- Chains
- Unknown
- Agent types
- Commerce Agent, Payment Protocol
- Open source
- Yes
- Pricing
- Free (open standard)
- Deploys as
- API, MCP server
- Works with
- AP2, A2A, MCP, Shop Pay, Google Pay
- Last checked
- 2026-10-23
Marketplace Signals
- ▸ Demo available
Verification status reflects evidence reviewed by Sato Hub. Self-reported claims are never presented as verified.
Where Universal Commerce Protocol (UCP) fits
Related concepts: How Agents Interact With Smart Contracts, How Agents Use Wallets, What Are Onchain Agents?
Listing History
Recorded changes to Universal Commerce Protocol (UCP)'s listing — status, verification, Sato Score, and recent releases. Full history is kept in the listing record.
- Jul 26, 2026Sato Hub began tracking this listing
- Jun 25, 2026Enriched: deployment options, has demo, marketplace notes
- Jun 25, 2026Auto-enriched: supported integrations, creator name
Compared with
Appears in
Related Resources
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Reference
QuestionsWhat people ask about this pageShowHide
Questions people ask about Universal Commerce Protocol (UCP)
- Is Universal Commerce Protocol (UCP) open source?
- Yes. Universal Commerce Protocol (UCP) is open source. Checked as of 2026-10-23.
- Which chains does Universal Commerce Protocol (UCP) support?
- Sato Hub has no confirmed chain list for Universal Commerce Protocol (UCP) as of 2026-10-23; treat chain support as unknown.
- Is Universal Commerce Protocol (UCP) still maintained?
- Sato Hub tracks no commit or release for Universal Commerce Protocol (UCP); it cannot say whether it is maintained.
- How do I install or run Universal Commerce Protocol (UCP)?
- Sato Hub has no deploy spec for Universal Commerce Protocol (UCP); follow the project's own documentation at https://developers.google.com/merchant/ucp.
- Is Universal Commerce Protocol (UCP) verified on Sato Hub?
- Sato Hub holds one earned check for Universal Commerce Protocol (UCP): Independently verified — listing reviewed against evidence, never self-reported. Its Sato Score is 59 of 100, a measure of how open, active and verifiable the project is, not a safety, quality or returns grade.
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Cite this page
Sato Hub. "Universal Commerce Protocol (UCP) — Sato Hub." Sato Hub, updated 2026-10-23, accessed 2026-10-23. https://satohub.ai/resources/universal-commerce-protocol-ucpData last refreshed 2026-10-23; this page is rebuilt daily. Citations carry the date so a reader can tell which snapshot a claim came from. Catalog data is licensed CC-BY-4.0.
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