Over the past decade, dozens of governments have started publishing their tenders as open, machine-readable data using the Open Contracting Data Standard (OCDS). Ukraine’s ProZorro, national eProcurement systems across Latin America, and transparency portals in Europe and Africa all speak this common format. If you sell across borders, these feeds are a goldmine — but bidding through them works differently from what most suppliers expect.

The key thing to understand up front: OCDS is a data standard, not a bidding platform. It exists to make government spending transparent and comparable. You can discover opportunities in the data, but you almost always register and submitsomewhere else — on that country’s official procurement system.

The data feed is not the submission system

An OCDS record describes a contracting process in a structured way: the buyer, the tender title and description, the category, the value, key dates, and links to the official documents. Aggregators and national portals expose this as a searchable feed or an API, which is how a service like ours can surface an opportunity in Kyiv or Bogotá next to one in your own city. But the record is a window into the process, not the place you act on it. To actually compete, you follow the links back to the country’s official procurement system and register there.

You register and submit locally

Each country runs its own eProcurement system with its own rules, and that is where the real work happens. Expect several practical hurdles that domestic bidding never involves:

  • Local registration. You typically create a supplier account on the national system, which may require a national tax identifier, a company registration number, or a local electronic signature to submit.
  • Legal presence or a local partner.Many tenders — especially for works and services — require bidders to be locally registered entities, to have a local office, or to bid as part of a joint venture or consortium with a local firm.
  • Language. The binding tender documents and your response are usually in the national language. The OCDS summary you found may be translated; the contract almost never is.
  • Currency, tax, and payment terms. Pricing, tax treatment, and payment are all local, and they materially affect whether a contract is worth winning.

Read eligibility first, and get local help

Before you translate a single page of a specification, confirm you are actually allowed to bid. Some procurements are restricted to domestic firms, to a trade bloc, or to entities meeting local certification requirements. If the tender is open to you but the barriers are high, the fastest route in is usually a local partner— an in-country firm, a distributor, or a lawyer or bid consultant who knows the national system. They handle registration, translation, and the formalities that trip up foreign bidders, and in many markets a credible local presence is itself part of how bids are scored.

Where the funding comes from a development institution rather than the government’s own budget, a different rulebook may apply — see how to bid on development-bank contracts, which explains the borrower-executed model that sits behind many of these tenders.

How to use open-contracting feeds well

Treat OCDS feeds as an early-warning and research tool. Because the data is structured, you can filter by category and country to spot the handful of tenders worth pursuing, and — because awarded contracts are published too — you can study who has won similar work, at what value, and how often a buyer goes to market. Use that to decide where to invest in local registration. Our directory pulls open opportunities from many of these systems into one place, so you can browse open bids without checking each national portal by hand — then follow the link through to the official system to compete.

The bottom line

Open-contracting portals make it easier than ever to findgovernment opportunities anywhere in the world, but finding is not bidding. The OCDS record points you to the country’s official system, where you register with local credentials, respond in the local language, and often need a local partner to be competitive. Confirm eligibility first, budget time for registration, and lean on in-country help. For the smaller cousin of these feeds — tenders published as plain open data — see how to bid using CKAN open-data feeds, and for the mechanics that apply once you reach any national system, the government-portal playbook.