The Case for a Neutral Product Catalog API in Southeast Asia
Target audience: Founders, VCs, product leaders | UTM: utm_source=blog&utm_medium=content&utm_campaign=founder-post-2
Every e-commerce platform in Southeast Asia wants to be the definitive product catalog. Lazada, Shopee, Tokopedia, and Qoo10 each hold fragments of the truth — their own listings, their own pricing, their own inventory data. None of them have an incentive to make that data accessible to developers building on top of the ecosystem.
This is the infrastructure gap BuyWhere was built to fill.
Why neutrality matters
When a product catalog is owned by a marketplace, every API decision reflects that marketplace commercial interests:
- Lazada API shows Lazada listings. It will not surface the Shopee listing that is 15% cheaper.
- Shopee API prioritises sponsored placements. The organic cheapest result may not rank first.
- Google Shopping is geo-limited, ad-funded, and missing large swaths of SEA merchant inventory.
For an AI agent that is supposed to act in the user interest — find the best price, flag availability issues, compare specs — a biased catalog is a liability. The agent recommendations are only as trustworthy as the data underneath them.
A neutral catalog has one job: reflect reality accurately, regardless of who is selling.
The SEA-specific opportunity
Southeast Asia is a structurally interesting market for this kind of infrastructure:
Fragmented merchant landscape. No single dominant platform. Users routinely check 3–4 apps before buying. An agent that checks one platform gives partial answers.
High mobile-first, price-sensitive behaviour. SEA consumers are experienced comparison shoppers. They want the cheapest option in the fewest taps. AI agents that can automate this are genuinely useful.
Rapid AI adoption among developers. Singapore, in particular, has a dense developer community that is early on AI agent tooling. The API-first developer culture here is ready for this abstraction.
No existing neutral catalog API. We checked. There is no equivalent to what BuyWhere is building for the SEA market.
What a neutral API enables
When developers can access a unified, neutral product catalog, the applications compound:
- Price alert agents that watch an item across all merchants and notify when it drops
- Gifting agents that find the best deal on a specific item for a specific budget
- Procurement tools for SMBs sourcing office equipment or supplies across platforms
- Voice assistants that answer "where is the cheapest iPhone 16 in Singapore right now?"
- Analytics products that track category price trends over time
None of these are possible with a single-marketplace API. All of them become relatively straightforward with a clean, well-maintained neutral catalog.
The infrastructure play
BuyWhere is not trying to be a consumer product. We are infrastructure — the same way Stripe is not a bank, and Twilio is not a telco. We sit between the fragmented SEA merchant ecosystem and the developers building the next generation of AI-powered commerce applications.
The bet is simple: as AI agents become the primary way people interact with e-commerce, the developers building those agents will need reliable, structured product data. BuyWhere is building that layer now, while the agent ecosystem is still forming.
For investors and founders tracking this space: the neutral catalog layer is the obvious missing piece. We are building it.
BuyWhere is the product catalog API for AI agents in Southeast Asia. Beta access is open at buywhere.io.
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