Osero
Osero is a stablecoin yield infrastructure company that packages the Sky Protocol's Sky Savings Rate into a developer SDK for neobanks, custodians, exchanges, and wallets, and runs Osero Foundry for institutional asset tokenization, operating as a Sky Ecosystem Prime Agent.
- Company typePrivate
- Founded2025
- HeadquartersGeorge Town, Cayman Islands
- Headcount11–50
- GTM typeB2B
- OfferingSoftware
What Osero does
Osero is a stablecoin yield infrastructure company that packages the Sky Protocol's Sky Savings Rate into a developer SDK and institutional asset origination suite. It was incubated by Stablewatch over approximately one year and officially launched in May 2026 as a Prime Agent within the Sky Agent Network, operating as a Cayman Islands-registered foundation (Osero Foundation, CR-427641) with 11-50 employees. The company serves B2B platforms that hold stablecoins on behalf of end users — neobanks, custodians, exchanges, and wallets — as well as institutional asset issuers via its Foundry product. As of the May 2026 launch, $5.89B had flowed through Osero Earn offering a 3.60% APY, and Osero Foundry was allocated $2.5B through the Sky Agent Network.
Osero's core product is the open-source @osero/client TypeScript SDK, which abstracts chain-specific PSM routing, ERC-20 approvals, ERC-4626 vault operations, and multi-step execution into a wallet-agnostic ExecutionPlan model. The SDK supports Ethereum Mainnet, Base, Arbitrum One, OP Mainnet, and Unichain; uses viem internally for calldata encoding; and integrates Enso for multi-stablecoin deposits (accepting any stablecoin in a single bundled transaction). On L2 chains, Osero routes through Spark PSM3 for direct sUSDS minting in a two-transaction flow. A Transparency SDK covering Position Monitoring, Liquidity, and Risk Capital feeds is listed as forthcoming. Osero Foundry provides institutional counterparties with tokenization, anchor funding, AMM liquidity provisioning, and isolated lending markets.
Osero's business model is non-custodial with no direct user fees; the company earns compensation, commissions, or revenue share from underlying protocols (notably Sky Protocol) for facilitating ecosystem access. Distribution is API-first and horizontal: any platform integrates @osero/client to embed yield within hours, requiring no smart contract deployment or DeFi expertise. A direct-to-consumer desktop app provides retail access alongside the B2B channel. Osero is expanding into the Plasma ecosystem, and its $13.5M May 2026 genesis round was led by Sky Ecosystem and co-led by Plasma with angel participation from Spark, USDT0, Maple Finance, Accountable, RedStone, RollupTV, Four Pillars, and Kairos Research. The company is led by Co-Founder & CEO Piotr Saczuk, with Stablewatch serving as a core contributor and Soter Labs providing governance and managed operations.
Osero firmographics
Firmographics- Name
- Osero
- Legal name
- Osero Foundation
- Website
- https://osero.org
- Company type
- Private
- Founded year
- 2025
- Operating status
- Operating
- Headcount range
- 11–50 employees
- Short description
- Osero is a stablecoin yield infrastructure company that packages the Sky Protocol's Sky Savings Rate into a developer SDK for neobanks, custodians, exchanges, and wallets, and runs Osero Foundry for institutional asset tokenization, operating as a Sky Ecosystem Prime Agent.
- Ownership category
- akta.pro rank
Osero industry classification
Industry- Product category
- Stablecoin Yield Infrastructure
- NAICS
- Computer Systems Design and Related Services (5415), Computer Systems Design and Related Services (54151)
- SIC
- Finance Services (6199)
- akta.pro primary industry
- Mint/Redeem, Issuance APIs & Treasury Operations Platforms (FSADADAE)
- akta.pro secondary industries
- Stablecoins & On-Chain Money (fiat-backed, crypto-backed, algorithmic; issuance/redemption) (FSAPAEAB), On-Chain Payments & Stablecoin Infrastructure (Issuance, Rails, Treasury) (FSAGAMAD), Crypto Payments & Stablecoin Settlement Platforms (BPAMAFAL)
Keywords
Where Osero is headquartered
LocationHeadquarters
- HQ city
- George Town
- HQ country
- Cayman Islands
Offices1 record
Markets served
Osero business model
Business model- GTM type
- B2B
- Offering type
- Software
- Cost components
- Technology or R&D, Personnel, Infrastructure, Marketing or Sales, Operations
Revenue model
- Revenue Share from Sky Protocol: Osero Foundation may receive compensation, commissions, or a revenue share from underlying protocols (including Sky Protocol) for facilitating access to their ecosystem. Such compensation does not affect the availability, routing, or execution of transactions and does not create any agency, brokerage, or fiduciary relationship.
Pricing tiers
| Model | Billing | Price |
|---|---|---|
| Other | Pay-as-you-go | No direct fee for using the Osero web interface or SDK |
Go-to-market motion1 record
Distribution channels3 records
Marketing channels4 records
Osero product offering
Product offeringCore offering
Osero provides a B2B stablecoin yield infrastructure built on Sky Protocol's Sky Savings Rate. Its flagship offering is the @osero/client TypeScript SDK, which lets neobanks, wallets, custodians, and exchanges embed institutional-grade stablecoin savings (3.60% APY) into their products in hours, without smart contract deployment or DeFi expertise. Osero Foundry additionally provides full-suite services for tokenizing, deploying, and scaling institutional assets via the Sky Agent Network.
Product overview
Osero is a stablecoin yield infrastructure company operating as a Prime Agent within the Sky Ecosystem. The core product is Osero Earn - institutional-grade savings infrastructure that packages the Sky Savings Rate into a developer-friendly TypeScript SDK (@osero/client), enabling any platform (neobanks, wallets, custodians, exchanges) to offer 3.60% APY on stablecoin balances within hours. Osero Foundry provides full-stack institutional asset tokenization services. The product ecosystem is built on Sky Protocol's USDS stablecoin and sUSDS yield-bearing token, with a Transparency SDK (Coming Soon) providing real-time auditable data on backing assets and risk capital.
Differentiator
Problem solved
Functional benefit
Brands
- Osero Earn: A developer SDK that enables platforms (neobanks, wallets, custodians, exchanges) to offer institutional-grade stablecoin savings products powered by the Sky Savings Rate to their users.
- Osero Foundry
Products and services
- Osero Earn Institutional-grade stablecoin savings infrastructure that packages the Sky Savings Rate (3.60% APY) into a developer-friendly SDK, enabling neobanks, wallets, custodians, and exchanges to offer stablecoin yield to their end users without taking on asset management risk.
- Osero Integration SDK (@osero/client) Open-source TypeScript SDK that provides a unified API for minting and redeeming sUSDS across Ethereum Mainnet, Base, Arbitrum One, OP Mainnet, and Unichain. Abstracts PSM routing, ERC-20 approvals, ERC-4626 vault operations, and multi-step execution sequencing.
- Transparency SDK Suite of live, auditable data feeds covering Position Monitoring (NAV, yield, risk capital requirements), Liquidity (idle stablecoins vs. onchain DeFi positions), and Risk Capital (junior and senior capital breakdown by entity), embeddable directly in product UI.
- Osero Foundry Full-suite services for institutional counterparties to tokenize, deploy, and scale institutional assets, including anchor funding, AMM liquidity provisioning, and isolated lending markets. Powered by the Sky Agent Network with $2.5B in allocation.
- Osero Direct Consumer App Direct-to-consumer desktop interface enabling retail depositors to access the Sky Savings Rate (3.60% APY) without going through a B2B platform integration.
Quantifiable outcome
- 3.60% APY on stablecoin savings
- +5 more outcomes
Companies that use Osero
Customer profileSegments5 records
Ideal customer profiles3 records
Osero technology and API
TechnologyTechnology focussed Yes
API detail
- Has API
- Yes
- API docs
- API detail
Core technology
AI maturity
App detail
Integration1 record
Feature6 records
Osero partnerships and signals
Strategic signalPartnerships
Three partnerships are on record, tiered core.
- Soter LabscoreSoter Labs is the trusted governance and managed operations provider for the Sky Ecosystem, partnering with Stablewatch to incubate Osero. Soter Labs provides governance and operational management.
- StablewatchcoreStablewatch is the stablecoin yield intelligence platform that incubated Osero over the past year. Stablewatch serves as a core contributor to Osero. Osero operates as a legally separate foundation, distinct from Stablewatch.
- Sky ProtocolcoreOsero integrates with Sky Protocol's infrastructure including the Sky Savings Rate, USDS stablecoin, sUSDS yield-bearing token, Peg Stability Module (PSM), and the Sky Agent Network. Osero is a Prime Agent within the Sky Ecosystem managing a portion of Sky Protocol's balance sheet.
Scale indicators8 records
Recent moves7 records
Expansion highlights6 records
Osero competitors and assessment
Company assessmentDirect peers
- Maple Finance: Institutional-grade on-chain lending and credit marketplace; both an Osero investor and Sky Ecosystem counterparty. Comparable in serving institutional borrowers/lenders with risk-managed yield products and in offering similar SDK/API distribution to fintechs.
- Beefy Finance: Multi-chain yield optimizer distributing auto-compounding strategies across dozens of chains. Comparable as a developer/yield infrastructure layer abstracting complex DeFi yield into single-click products for B2B platforms.
- Yearn Finance: Largest DeFi yield aggregator with multi-protocol vault strategies and developer-friendly integrations. Directly comparable as a yield-infrastructure layer sitting between retail/institutional users and underlying DeFi protocols.
- Morpho: Optimized lending protocol with Morpho Blue vaults and an emerging B2B/SDK distribution layer. Comparable as on-chain lending infrastructure offering yield with developer-friendly integration and institutional risk documentation.
- Spark: Another Prime Agent within the Sky Ecosystem focused on retail and DeFi-native distribution of the Sky Savings Rate. Closest comparable: shares the same protocol rails, capital base, and target use case but targets a different distribution segment than Osero.
Broad incumbents
- Aave Companies: Largest decentralized lending protocol offering stablecoin yield via Aave v3 with extensive institutional and B2B integrations (Aave Arc, Fireblocks). Broad incumbent offering overlapping yield functionality across many chains.
- Sky Ecosystem (Sky Protocol / MakerDAO): The protocol Osero is built on. Operates the USDS stablecoin, sUSDS yield-bearing token, Sky Savings Rate, and Sky Agent Network. Indirectly comparable as the upstream balance-sheet and collateral layer Osero distributes to B2B platforms.
Others
- Tether (USDT0): Issuer of the largest fiat-backed stablecoin (USDT) and a strategic investor in Osero's funding round. Related as a stablecoin ecosystem participant whose USDT0 product competes with USDS for stablecoin distribution.
Emerging players
- Convex Finance: Yield booster for Curve liquidity providers with an established B2B boost model. Comparable as a yield-infrastructure layer with developer-facing APIs and multi-protocol routing that abstracts DeFi complexity.
- Pendle Finance: Yield-tokenization protocol that splits yield-bearing assets into PT/YT tokens, enabling fixed-yield and leveraged-yield strategies. Emerging player in adjacent yield-infrastructure with overlapping institutional and retail distribution focus.
Market position
Strengths5 records
Weaknesses5 records
Competitive moat5 records
Key risks6 records
Key highlights7 records
Customer concentration
Osero social profiles
Digital presenceOsero compliance and trust
Trust signalCompliance1 record
Osero financial estimates
Financial estimateRevenue estimate
Valuation estimate
Osero leadership team
Management profileNumber of profiles
Profiles1 record
Osero funding detail
Funding detailFunding overview
Funding rounds1 record
Investors2 records
Funding detail is available on the Subscription and Enterprise plan.Contact sales →
Osero M&A and investment
M&A and investmentM&A
Investments
M&A and investment is available on the Subscription and Enterprise plan.Contact sales →
Frequently asked questions about Osero
What does Osero do?
Osero provides a B2B stablecoin yield infrastructure built on Sky Protocol's Sky Savings Rate. Its flagship offering is the @osero/client TypeScript SDK, which lets neobanks, wallets, custodians, and exchanges embed institutional-grade stablecoin savings (3.60% APY) into their products in hours, without smart contract deployment or DeFi expertise. Osero Foundry additionally provides full-suite services for tokenizing, deploying, and scaling institutional assets via the Sky Agent Network.
Is Osero a public or private company?
Osero is a private company. It is classified as venture growth investor backed and is currently operating.
When was Osero founded?
Osero was founded in 2025. It employs 11 to 50 people.
Where is Osero based?
Osero is headquartered in George Town, Cayman Islands.
How does Osero make money?
One revenue line is on record: revenue Share from Sky Protocol.
Who are Osero's main competitors?
Direct peers on record are Maple Finance, Beefy Finance, Yearn Finance, Morpho and Spark. Broad incumbents are Aave Companies and Sky Ecosystem (Sky Protocol / MakerDAO). Tether (USDT0) is listed as an others. Emerging players are Convex Finance and Pendle Finance.
Does Osero have an API?
Yes. Osero offers a TypeScript SDK (@osero/client) that provides two clients: OseroClient (local, builds plans from on-chain reads, no API key required) and OseroApiClient (hosted API, returns priced swap quotes including cross-chain routes). The SDK supports minting and redeeming USDS and sUSDS tokens, with preview helpers for quoting expected output amounts. The API is available at api.osero.org/v1/ and supports methods including getSupportedAssets, getSwapQuote, getSwapStatus, and getSwapStatusForQuote. Custom RPC transports are configured via viem. The SDK is open-source and available on GitHub at stablewatch-io/osero-kit. Developer documentation is at docs.osero.org.
What industry is Osero in?
Osero's product category is Stablecoin Yield Infrastructure. Its primary akta.pro industry code is FSADADAE, Mint/Redeem, Issuance APIs & Treasury Operations Platforms, with a secondary code of FSAPAEAB, Stablecoins & On-Chain Money (fiat-backed, crypto-backed, algorithmic; issuance/redemption). Its NAICS code is 5415 and its SIC code is 6199.