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Supporting developers, startups, and full-fledged companies building on Stellar and Soroban
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By Fuul
Stellar projects today have access to incentive tools, but they serve different purposes and come with different tradeoffs. Galxe handles social growth and task-based campaigns — a fixed set of actions, a campaign window, rewards at the end. Merkl handles liquidity incentives and has recently announced Stellar support, though no campaigns are live yet; it indexes on-chain LP and trading activity and batches reward distributions every 8 hours through a shared distributor contract that Merkl controls — and after one year, any rewards users never claimed can be reclaimed by Merkl itself, not returned to the project. Neither platform covers the full incentive surface that DeFi protocols need: referral attribution, multi-level affiliate programs, conversion-based commissions, tiered reward structures, or continuous behavioral rewards that compound over time. And neither was designed with enterprise security requirements in mind — Fuul operates a SOC2 compliance program, never takes custody of project funds at any point, and deploys a separate contract per project that the project owns and controls entirely. Unclaimed or expired rewards return to the project, not to Fuul. Fraud protection is built in — wallet clustering, wash trading detection, self-referral prevention, and per-project blacklists — because incentive budgets at scale attract abuse that a simple dispute window doesn't catch.
Fuul is infrastructure, not a campaign tool. It reads on-chain activity continuously, computes rewards from that data, and distributes them through a non-custodial Soroban contract that the project owns and controls. No comparable platform currently runs production Soroban contracts for reward distribution on Stellar.
Fuul is the incentives infrastructure platform for digital asset companies. It lets Institutions, DeFi, Fintechs, Exchanges (among others) pay tokens or points for any on-chain activity, in three steps:
Define conversion events: Teams log into Fuul's incentives manager, point to a smart contract or integrated protocol, and select which on-chain activities they want to incentivize (swaps, deposits, holdings, looping strategies, etc.).
Configure distribution rules: Teams choose how rewards are calculated and distributed: based on fees generated, TVL contributed, transaction volume, referral conversions, time-weighted positions, or custom combinations.
Fund and go live: For on-chain payouts, teams deploy their own reward contract through the Fuul app with one click (they remain the sole admins, Fuul never holds custody of funds). Fuul tracks user activity across the configured conversion events and distributes points or tokens automatically based on the defined criteria.
The Stellar integration extends Fuul's full proven infrastructure to Stellar, giving projects building on Stellar access to the same growth infrastructure used by Coinbase, Kraken, dYdX, and Morpho on other chains.
This is how we will be expanding our product onto Stellar, in three layers:
Full Platform Extension (Webapp, APIs, SDK)
Stellar is added as a first-class chain across Fuul's entire platform: the REST API supports Stellar addresses and assets, the JavaScript SDK handles Stellar transaction signing for claim flows, and the Fuul app allows program configuration, trigger setup, and analytics.
Impact: Stellar projects gain immediate access to Fuul's full incentive suite: affiliate programs, DeFi liquidity rewards, referral systems, trading competitions, cashback programs, and points programs.
Stellar Wallets Kit Integration
Fuul's white-label claiming pages and referral hubs integrate with Stellar Wallets Kit, supporting wallets for authentication and reward claiming. Users connect their Stellar wallet, verify their allocation proof, and claim their reward tokens directly from the Soroban contract, either through Fuul's hosted claiming page or any web app integrating Fuul's APIs/SDKs.
Impact: Projects get a fully white-labeled, production-grade claiming experience without building any wallet infrastructure (and any team already using Fuul's APIs can extend the same flow to their own frontend)
Aquarius DEX Integration
A pre-built trigger connector indexes LP provision and trading volume events on Aquarius, normalizing them into Fuul's event schema. Projects configure rules directly on Fuul's app. For example, "reward wallets that provide >$500 of USDC/XLM liquidity for 7+ days." Stellar's ledger is the source of truth for event verification.
Impact: DeFi protocols and ecosystem teams can incentivize Aquarius liquidity in minutes, accelerating swap volume and TVL growth across Stellar's DEX layer.
Blend v2 Integration
A pre-built trigger connector reads Blend v2's index to track lending supply and borrow positions per wallet. Enables programs that automatically reward lenders for supplying assets or borrowers for sustained utilization.
Impact: Lending protocols on Stellar can run automated supplier and borrower incentive programs without any custom engineering.
Stellar Token Holders
A pre-built trigger connector reads the holding positions for any specific token on the Stellar Network, allowing its issuer to reward users as they wish. Many times, these token holder triggers are also used to track DeFi receipt tokens.
Impact: Any Stellar team can incentivize users to hold their tokens.
These contracts will handle budget deposits and reward distribution, natively on Stellar. Projects can deposit XLM, stablecoins (e.g. Stellar-issued USDC), or any other SEP-41 token into the contract; Fuul's engine computes per-wallet allocations and users claim directly on-chain using their Stellar wallet. Contracts will be open-sourced on GitHub.
Impact: Any Stellar project can run fully on-chain, trustless incentive programs without building or managing distribution infrastructure.
$105.0K
Fuul is live in production and operating at scale across EVM and Solana chains:
164 incentive programs launched since 2024
36 active clients paying monthly retainers
146M+ incentivized transactions processed
12M+ unique wallets rewarded on-chain
$2.6M+ in token rewards distributed on-chain (excludes points programs)
30+ native protocol integrations (DEXs, lending, liquidity, staking, trading, social)
9x MRR growth in 2025, expanding from early DeFi adopters to enterprise clients
Notable clients: Coinbase, Kraken, Morpho, dYdX, Sushi, Vertex, Nado, Euler
Clients actively looking to deploy incentives on Stellar: Etherfuse (Has already initiated contact between Stellar and Fuul in a group with Etherfuse. POC: Andres Salcedo), M1X Global (POC: Jeremy Coffey), Sentora (POC: Lucas Outumuro)
Case studies: https://www.fuul.xyz/case-studies
Platform: https://app.fuul.xyz
Fuul was accelerated by a16z Crypto CSX (2024 cohort). The core infrastructure (event indexing, incentive engine, distribution contracts, analytics) is already production-hardened across multiple chains. This grant funds the Stellar-specific extension of proven infrastructure.
Why SCF Funding
Fuul's current revenue comes from EVM and Solana clients. Extending to Stellar requires upfront engineering investment, a dedicated hire, Soroban contracts, new protocol connectors, before any Stellar client revenue is generated. SCF funding bridges this gap and allows us to commit fully to Stellar without pulling resources from existing clients.
Stellar Community Engagement
Upon approval, Fuul commits to: (A) Continuous posts on the Stellar Community Forum, (B) AMA in Stellar Discord, (C) integration demo at a Stellar developer meetup, (D) open-sourcing all Soroban contracts on GitHub for community review.
Tranche #1: Full Platform Extension to Stellar
Deliverables:
REST API: Stellar Support: Stellar added as a supported chain_id across all relevant endpoints: program creation, event ingestion, allocation calculation, and distribution. Endpoints accept Stellar wallet addresses and Stellar asset formats.
Budget: $13,000
Incentives Setup: Stellar Chain: Stellar chain selection available in Fuul's program setup UI. Supports trigger configuration and reward token selection (XLM, stablecoins, or any SEP-41 Stellar token).
Budget: $11,000
SDK: Stellar Transaction Signing: JavaScript/TypeScript SDK updated to support Stellar transaction signing for claim flows. The API endpoint returns the claim data; the client application constructs and submits the transaction.
Budget: $8,000
Analytics: Stellar Metrics: Stellar-specific metrics (active wallets, reward volume by token, protocol-level attribution) surfaced in program analytics dashboards.
Budget: $3,000
How to measure completion:
API reference updated; reviewer can receive valid API responses for incentives programs on Stellar
Reviewer can create a complete Stellar incentive program in the staging Fuul dashboard without writing any code
SDK updated in npm; code example demonstrating a Stellar claim flow is publicly available
Reviewer can view analytics for a test Stellar program in the Fuul dashboard
Budget: $35,000
Tranche #2: Protocol Trigger Integrations
Deliverables:
Aquarius DEX Trigger Connector: Connector indexing Aquarius liquidity pool activity on Stellar's ledger: LP token minting/burning and swap volume per wallet. Normalized into Fuul's event schema. Configurable rules in Fuul's dashboard (minimum liquidity threshold, time-weighted position requirements, volume targets).
Budget: $8,000
Blend v2 Lending Trigger Connector: Connector reading Blend v2's index to track supply and borrow positions per wallet. Enables projects to reward lenders and borrowers automatically based on position size, duration, or utilization thresholds.
Budget: $8,000
Stellar Token Holders Trigger Connector: Connector reading holding positions for any specific token on the Stellar Network. Allows token issuers to configure reward programs for holders directly from Fuul's dashboard.
Budget: $4,000
How to measure completion:
Live connector running against Stellar testnet, processing Aquarius events. Reviewer can create a test program using Aquarius as a trigger and verify that test wallet actions are captured and allocated rewards
Live connector running against Stellar. Test program using Blend v2 triggers; test wallet lending activity captured and allocated rewards verifiably
Live connector running against Stellar. Test program using token holding as a trigger; test wallet balances captured and rewards allocated verifiably
Budget: $20,000
Tranche #3: Soroban Contracts + Mainnet Launch
Deliverables:
Soroban Reward Distribution Contracts: Testnet + Mainnet Deployment: Non-custodial reward distribution contracts deployed to Stellar mainnet. Support: (a) budget deposit in XLM, stablecoins, or any SEP-41 token, (b) cryptographic proof creation for user claims, (c) trustless claim with wallet signatures. Built on Soroban's auth framework and SEP-41 token interface.
Budget: $45,000
Smart Contracts Open-Sourced: Full contract code published to a public GitHub repository under MIT license.
Budget: $0
End-to-End Claiming Flow on Mainnet: Users connect a Stellar wallet via Stellar Wallets Kit on a live Fuul claiming page or any white-label web app, view earned rewards, and claim from the Soroban contract on mainnet.
Budget: $3,000
Public Developer Documentation: Integration guide and developer docs for Stellar projects: contract reference, API docs for Stellar-specific endpoints, SDK usage examples, and step-by-step guide for launching a Stellar incentive program.
Budget: $2,000
How to measure completion:
Public mainnet contract addresses on Stellar explorer. Successful end-to-end transactions: deposit → allocation → claim, with real wallets and mainnet tokens
Public GitHub repo link with commit history and MIT license file
Reviewer can connect a wallet on a live claiming page and observe a verifiable on-chain claim transaction on Stellar mainnet explorer
Publicly accessible documentation URL covering all Stellar-specific integration surfaces
Budget: $50,000
Fuul is a team of 10, led by two complementary founders:
Leandro Schlottchauer (CEO) — 3rd time founder with deep expertise in performance marketing and incentive systems. Co-founded Trocafone (BackMarket for LATAM) and BullMetrix (one of the top PPC marketing agencies in LATAM). MIT MBA 2022. Leandro brings a decade of experience designing and scaling user acquisition and rewards programs, which directly shaped Fuul's product vision. LinkedIn: https://www.linkedin.com/in/leandrosch/
Andre Brener (CTO) — Solidity and blockchain engineer, 1st place winner at ETH Buenos Aires Hackathon 2018. Started in data engineering within AdTech before transitioning fully to web3. Andre architected Fuul's multi-chain smart contract infrastructure and has shipped production contracts across EVM and Solana. LinkedIn: https://www.linkedin.com/in/andre-brener-2b026671/
The rest of the team brings complementary skills across backend and frontend development, data engineering, and customer success.
Locha
By Fuul
Unlocking DeFi Incentives on Stellar