What is Coupa Open Buy?
Coupa Open Buy is a native capability within the Coupa Business Spend Management platform that lets buyers search external supplier catalogues directly from their purchasing workflow. Unite uses this capability to bring its curated European marketplace, with 117+ million articles from pre-vetted suppliers, straight into your Coupa search results, with transparent pricing, availability and CO2 data. The result: your team discovers competitive alternatives and benchmarks prices without leaving the interface they already use. Same approval rules, same compliance controls, broader market reach, and Unite handles the catalogue.
How the Unite × Coupa Open Buy integration works
Search in Coupa
A user initiates a purchase in Coupa. Open Buy sends the search query to Unite's catalogue in real time.
Browse and select in Unite
Unite returns matching products with pricing, availability, supplier details and CO2 data directly inside the Coupa interface. The user selects what they need.
Order flows back to Coupa
Fill the shopping basket and create the order directly in Coupa. Fully compliant, fully documented.
Catalogue connectivity
Unite's catalogue is connected to Coupa via API. Search results are returned in real time. No batch uploads, no stale data. Your team always sees current pricing and availability from Unite's marketplace of 117+ million articles.
Seamless order processing
Once a user selects products, all required data fields like item descriptions, pricing, supplier information, quantities and delivery details, are passed directly into Coupa for approval and PO creation. Your team stays inside Coupa throughout the entire process, with no manual re-entries required.
Data and compliance
Every transaction is documented automatically. Unite provides full price transparency (item price, net price, service fee), CO2 emissions data per product, and a purchasing protocol that records the competitive alternatives considered. This supports audit readiness and ESG reporting without additional effort.
Why procurement teams choose Unite with Coupa
Stay inside Coupa
No workflow disruption. Your team searches, selects and orders without leaving Coupa.
Compliant purchasing from vetted suppliers
Every supplier on Unite is pre-vetted for compliance, quality and ESG standards. No anonymous sellers, no surprises.
Real-time pricing and availability
See current market prices alongside your contracted catalogues and benefit from instant benchmarking on every search.
Automated PO creating and order routing
Selected items flow back into Coupa's approval and PO workflow. No manual steps, no data gaps.
Reduce maverick buying
Channel indirect spend through a governed, transparent marketplace. Unite applies your category restrictions and view management settings.
Fast setup
Go live in days rather than months. Lightweight API connection, no heavy IT project required.
Who uses the Unite integration
This integration is built for organisations that already run Coupa and want to expand their indirect procurement reach without adding systems or complexity.
Procurement teams at mid-to-large enterprises
You manage a mix of framework agreements and spot purchases. Unite gives your buyers access to a broader, competitively priced market, governed by the same Coupa rules and approvals they already follow.
IT and procurement operations
You need integrations that are low-effort to deploy and maintain. Unite connects via Coupa's native Open Buy API. No custom middleware, no ongoing technical overhead
Highly regulated industries where compliance and transparency matter most
Unite is trusted by organisations in the public sector, manufacturing, healthcare and services. Anywhere procurement decisions need to be auditable, documented and free from conflicts of interest.
New to Unite? Here's what you need to know
If you're exploring Coupa integrations for the first time, here's a quick overview of what Unite brings to the table and why it's worth a closer look.
Benchmark every purchase against a huge marketplace
With Unite connected to Coupa, your team automatically sees competitive market prices alongside your contracted catalogues on every search. That means instant benchmarking without extra tools, manual research, or separate sourcing rounds.
Europe's leading marketplace
We connect buyers with over 750 pre-vetted suppliers across categories like office supplies, IT equipment, MRO, and PPE. All through a single, managed platform.
Built for procurement, not retail
Unite is designed around the needs of professional buyers: framework agreement support, customisable category restrictions, view management, and full audit trails. Every supplier is screened for compliance, quality, and ESG standards before they appear in search results.
Transparent pricing without hidden costs
What you see is what you pay including net price, service fee, and CO2 data per product.. There are no supplier commissions, no mark-ups, and no listing fees that get passed on to buyers.
Companies already connecting Unite with Coupa
Join the launch list
Coupa Open Buy support is on its way. Sign up to be among the first to know when it goes live and get priority access when it does.
Frequently asked questions
With Open Buy, search results from Unite appear directly inside Coupa. Your team never leaves the Coupa interface. With PunchOut, users click through to Unite's full marketplace, build a basket there, and transfer it back. Open Buy is lighter and faster; PunchOut offers access to Unite's complete platform experience, including advanced features like the purchasing protocol and spend analytics dashboards.
Yes. Unite integrates with SAP Ariba, Jaggaer, Onventis and others. Additional integrations are on our roadmap.
See all integrations
When a user searches in Coupa, the query is sent to Unite's API. Unite returns product data (descriptions, pricing, availability, supplier details, CO₂ data). When the user selects items, the order data flows back to Coupa for PO creation. All data is hosted on EU-based servers and processed in compliance with GDPR.
Learn how P2P works and where Unite fits in.
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