Ignacio Detmer and Guillermo Acuña spent decades building LatAm companies before they shipped Koywe: a developer-facing payments API that lets a business collect pesos or reais on local rails, hold multi-currency balances, and convert into (or out of) crypto such as USDC without stitching together a bank in every market. In mid-July 2026 the pair cleared Endeavor’s International Selection Panel in Athens, and on August 5 Endeavor Miami published the profile. That is a founder milestone, not a product launch. The product worth profiling is the ramp and treasury stack behind it.
Who built it, and what problem they named
Detmer (CEO) and Acuña (CTO and CPO) met as children in Chile and later studied at Pontificia Universidad Católica de Chile. Detmer co-founded Americas Car Group / Frontier Car Group, a used-car marketplace later sold to Prosus; Acuña co-founded Cumplo, a digital lending platform that has publicly claimed multi-billion dollars in SME loans across Chile, Mexico, and Peru. Their Y Combinator Winter 2023 launch post framed Koywe as “the on and off ramp for crypto in LatAm”: well-documented APIs so any company could offer remittances, dollar-style wallets, and investments without reinventing local compliance and payment infrastructure.
The pain they described is still familiar. Domestic rails in the region are excellent inside a country (Pix in Brazil, SPEI in Mexico, PSE and Nequi in Colombia). Crossing a border with traditional correspondent banking is still slow, opaque, and expensive. Stablecoins settle 24/7 on public ledgers, but a fintech still needs licensed local pay-in and pay-out paths, quotes, KYB, webhooks, and reconciliation. Koywe sells that middle layer.
What the API actually does
Koywe’s platform docs describe four job families, not a single “buy crypto” button:
- Accept payments (PAYIN): create an order, send the customer a payment URL or method-specific flow, credit a virtual balance when local settlement lands.
- Pay providers (PAYOUT): send local-currency bank transfers to vendors and contractors.
- Manage balances: hold multi-currency virtual accounts (docs list COP, BRL, MXN, CLP, USD, EUR, and more) and transfer between them without opening a separate bank account per market.
- Crypto on/off-ramp: convert fiat balances into crypto (ONRAMP) or crypto into fiat (OFFRAMP).
Local methods are the conversion engine, not window dressing. The payment-methods guide currently maps:
| Country | Methods (pay-in) | Settlement (docs) |
|---|---|---|
| Colombia | PSE, Nequi | Instant–2 hours / instant |
| Brazil | Pix (static or dynamic) | Instant |
| Mexico | SPEI; cards (international) | Instant |
| Chile | Khipu | Instant–2 hours |
| Peru | QRI | Instant |
| Argentina | Local methods | Varies |
Bolivia, Venezuela, and the United States are documented as payout-only today: you can send, but you do not collect via those local pay-in methods yet. That asymmetry matters for anyone designing a multi-country collection product.
Crypto ramps use a deal + order model rather than a single opaque transfer. For ONRAMP you get a quote (origin fiat, destination asset, network, fee, quote TTL), create a deal against a Koywe crypto account id, and the deal can fund in installments as fiat credits arrive. OFFRAMP sells crypto into a fiat virtual account and, unlike on-ramp, must be funded in full. Docs list networks including Ethereum, Polygon, Solana, Base, Algorand, Tron, BSC, and Bitcoin, with assets such as USDC and USDT among the pairs. Destination for on-ramp is a registered crypto account (managed or external wallet), not a free-text address pasted into a form.
Around that core, the commercial site markets international treasury, payment links, QR collection, an OTC desk, and a Checkout app. The through-line is the same: one organization and merchant model, sandbox credentials, webhooks, and a path from local fiat into digital dollars (or back out) without each product team becoming a multi-country bank.
Compliance, partnerships, and scale claims
Koywe’s public footer is unusually specific for a LatAm fintech homepage. In Argentina, services run through Alerce Argentina, SRL, registered under No. 24 of the CNV’s PSAV (virtual asset service provider) registry. In Chile, Koywe SpA is registered under No. 196 of the CMF financial-services-provider registry and authorized for intermediation in financial instruments. Those are named license numbers a reader can treat as starting points for diligence, not as a global passport: each product still runs through the entity authorized for that service in that jurisdiction.
Endeavor Miami’s August 5 write-up attributes roughly $12.5M in funding (Y Combinator, Franklin Templeton, Concentric VC among named backers) and strategic partnerships with Circle (Circle Payments Network), Tether (T-0), and Mastercard (Mastercard Move). It also repeats the company scale line of more than $2B in annual transaction volume. Treat volume and partnership depth as company- and network-reported figures until you see audited or on-chain breakdowns; they are useful context for “this is past demo day,” not independent proof of corridor quality.
Koywe’s own Spanish blog on the Endeavor selection stresses multi-country treasury, local-currency to stablecoin conversion, automated invoicing, and ISO 27001 as the security posture. That framing matches the docs: stablecoins as a payment rail for businesses, not as a retail trading product.
How it sits next to BlindPay, Conduit, and consumer wallets
PTYcoin has already profiled B2B rails in this neighborhood: Conduit and BlindPay. Koywe is adjacent, not identical. BlindPay’s public story leans hard into US–LatAm stablecoin sandwiches, named virtual accounts, and a younger seed-stage timeline. Conduit is often discussed as high-volume B2B stablecoin payments infrastructure. Koywe’s public surface is broader multi-country treasury + local-method collection + explicit crypto deal APIs, with Chilean founding roots and explicit CNV/CMF registration language on the marketing site.
Consumer products we cover (Belo, Meru, Takenos, Muun) are what end users open on a phone. Koywe is closer to the integration layer those apps, payroll platforms, and marketplaces may call so a Brazilian contractor can get Pix while a treasury team settles the cross-border leg in USDC. If you hold your own keys and only need a self-custody wallet, Koywe is the wrong product. If you are building the company that has to cash people out in five countries by Friday, the on/off-ramp API category is the conversation.
Limits worth reading before a pilot
This is business infrastructure, not a retail wallet. End customers complete bank or wallet flows Koywe orchestrates; the merchant holds virtual balances and runs KYB. Self-custody of the business crypto leg is possible via external crypto accounts, but day-to-day fiat balances sit in the platform model the docs describe.
Corridor quality is partner-dependent. Instant SPEI or Pix in the docs does not guarantee identical cost, limits, or failure modes in every corridor at every hour. Quotes expire; fees and FX sit in the quote object. Production economics only show up in a real sandbox-to-live pilot on your volumes.
Regulatory coverage is multi-entity. PSAV in Argentina and CMF registration in Chile do not automatically cover every product in every country on the marketing map. Read the entity footnotes and ask which legal entity sits under each rail.
Payout-only markets and method gaps. Bolivia, Venezuela, and the US as payout-only; Argentina’s pay-in methods listed more vaguely than Pix/SPEI; cards available in some contexts with higher fees and 3DS friction. Design for the documented methods, not the press-release country list.
Company-reported scale. The $2B annual volume line and partnership logos are directional. For treasury risk, ask for corridor SLAs, liquidity behavior under stress, and what happens when a local rail or banking partner fails mid-settlement.
No endorsement. A Projects profile maps a product; it does not recommend integrating Koywe, holding stablecoins, or treating any yield or FX claim as advice.
Takeaway
Koywe is a Chilean-founded, YC W23 payments company that productized a boring, valuable job: connect LatAm’s best domestic payment methods to multi-currency balances and fiat↔crypto conversion through one API surface. The Endeavor selection is a timely reason to look again; the durable story is the documented PAYIN/PAYOUT/ONRAMP/OFFRAMP model, named local methods, and explicit regulatory entities.
For builders, the useful next step is concrete. Open the docs, map the countries and methods you actually need, run sandbox quotes for the assets and networks you care about, and price the full path (local method + FX + crypto network fees) against BlindPay, Conduit, Bitso Business, or a home-grown bank stack. For readers who only use crypto apps, the lesson is structural: when a LatAm product “just works” with Pix or SPEI and settles in dollars on-chain, someone had to wire that ramp. Koywe is one of the teams selling that wire.
