RAIN PROTOCOL LIMITED
Rain Protocol provides developer tools and smart contract infrastructure for decentralized prediction markets on Arbitrum, enabling developers and AI agents to build custom forecasting platforms using SDKs, AI-powered oracles, and gas-sponsored trading.
- Company typePrivate
- Founded2025
- HeadquartersLondon, United Kingdom
- Headcount1–10
- GTM typeB2B and B2C
- OfferingSoftware
What RAIN PROTOCOL LIMITED does
Rain Protocol Limited is a London-based company developing decentralized prediction market infrastructure built natively on the Arbitrum blockchain. The protocol positions itself as the "Uniswap of prediction markets," providing SDKs, APIs, and smart contracts that enable developers, creators, and AI agents to launch their own prediction market platforms for publicly verifiable events. Its core technology stack includes automated market makers (AMMs) for liquidity, a hybrid AI-human oracle (Delphi, built by Olympus AI) for objective event resolution, an Entropy Layer powered by Chainlink VRF for high-speed randomly-generated markets, and account abstraction via Alchemy smart accounts enabling gas-sponsored trading. Cross-chain support allows deposits from Ethereum, Base, BNB Chain, and Bitcoin.
The protocol is governed by a DAO where $RAIN token holders vote on platform decisions, with the Rain Foundation (a Panama-registered non-profit) serving as steward. Revenue accrues from trading fees (5% of resolved market volume), a $1 flat AI oracle fee, and Entropy Layer fees (4%), with 2.5% of trading volume directed to $RAIN buyback-and-burn. The customer base is primarily horizontal: developers and builders using the TypeScript SDK, with a $5M Builder Grants Program incentivizing ecosystem growth. Notable enterprise backing comes from Nasdaq-listed Enlivex Therapeutics, which has committed over $221M to the ecosystem through token purchases and partnership agreements. Sub-brands include Rain Trade, Pred, Currents, and Speed Markets — consumer-facing applications built on the protocol.
RAIN PROTOCOL LIMITED firmographics
Firmographics- Name
- RAIN PROTOCOL LIMITED
- Legal name
- Rain Foundation
- Website
- https://rain.one
- Company type
- Private
- Founded year
- 2025
- Operating status
- Operating
- Headcount range
- 1–10 employees
- Short description
- Rain Protocol provides developer tools and smart contract infrastructure for decentralized prediction markets on Arbitrum, enabling developers and AI agents to build custom forecasting platforms using SDKs, AI-powered oracles, and gas-sponsored trading.
- Ownership category
- akta.pro rank
RAIN PROTOCOL LIMITED industry classification
Industry- Product category
- Decentralized Prediction Markets Protocol
- NAICS
- Securities and Commodity Exchanges (52321), Software Publishers (5132), Securities and Commodity Exchanges (523210)
- SIC
- Security & Commodity Brokers, Dealers, Exchanges & Services (6200), Services-Prepackaged Software (7372)
- akta.pro primary industry
- Prediction Markets & Event Derivatives (Crypto) (FSADAGAG)
- akta.pro secondary industries
- Deployment, Automation & DevOps (build pipelines, contract deployment tools) (FSAPABAH), Smart Contract Execution Environments (EVM/WASM, runtimes, precompiles) (FSAPABAA)
Keywords
Where RAIN PROTOCOL LIMITED is headquartered
LocationHeadquarters
- HQ city
- London
- HQ country
- United Kingdom
- HQ region
- Europe
Markets served
RAIN PROTOCOL LIMITED business model
Business model- GTM type
- B2B and B2C
- Offering type
- Software
- Cost components
- Technology or R&D, Personnel, Operations, Marketing or Sales, Infrastructure
Revenue model
- Trading Fees: 5% fee collected from total trading volume of each resolved market. Fee distribution: Market Creator (1%), Liquidity Providers (1.2%), Resolver (0.3%), $RAIN Buyback-and-Burn (2.5%). For AI oracle resolutions, resolver share splits between Oracle (0.1%) and triggerer (0.2%).
- AI Oracle Fees: Public markets using the AI Oracle (Delphi) for resolution incur an additional $1 flat fee from the creator to cover oracle services.
- Entropy Layer Fees: 4% protocol fee on Entropy Layer trading volume, split between $RAIN Buyback-and-Burn (2.5%) and Liquidity Pool Incentives (1.5%).
- Deflationary Token Mechanism: 2.5% of trading fees used to buy back and burn $RAIN tokens, creating direct relationship between protocol activity and token scarcity.
Pricing tiers
| Model | Billing | Price |
|---|---|---|
| Transaction based/ take rate | Pay-as-you-go | Trading Fee Structure |
| Transaction based/ take rate | Pay-as-you-go | AI Oracle Resolution Fee |
| Transaction based/ take rate | Pay-as-you-go | Builder Rewards |
| Transaction based/ take rate | Pay-as-you-go | Liquidity Provider Rewards |
| Transaction based/ take rate | Pay-as-you-go | Entropy Layer Fee Structure |
Go-to-market motion2 records
Distribution channels4 records
Marketing channels7 records
RAIN PROTOCOL LIMITED product offering
Product offeringCore offering
Rain Protocol provides decentralized infrastructure for building and operating prediction markets. Built natively on Arbitrum with cross-chain funding support (Ethereum, Base, BNB Chain, Bitcoin), it offers a TypeScript SDK, smart contract framework, and APIs that allow developers and AI agents to permissionlessly create and trade on both public and private markets. The protocol includes automated market makers for liquidity, an AI-powered oracle (Delphi) for objective resolution, account abstraction with gas sponsorship, and a Chainlink VRF-based Entropy Layer for high-speed markets.
Product overview
Rain Protocol is a decentralized prediction markets infrastructure layer designed to be the 'Uniswap of prediction markets.' Built natively on Arbitrum with cross-chain support, it provides the foundational SDKs, APIs, and smart contracts enabling anyone to launch prediction market platforms. The product portfolio includes: the core Rain Protocol and Shared Liquidity Pool infrastructure; Rain SDK and Rain for AI Agents developer tools for building custom applications; the Entropy Layer (RNG Layer) for high-speed markets with Chainlink VRF; RainAA for account abstraction with Alchemy-powered gas sponsorship; the Pred marketplace aggregator and Rain Trade consumer application; $RAIN governance token; and the Raindrops rewards system. The protocol is governed by the Rain DAO, and builders can access funding through the $5M Builder Grants Program.
Differentiator
Problem solved
Functional benefit
Brands
- Rain Trade: A prediction market application powered by the Rain Protocol serving as a primary implementation of the protocol's core features.
- Pred
- Currents
- Speed Markets
Products and services
- Rain Protocol Core decentralized prediction markets protocol built natively on Arbitrum with cross-chain support, providing automated market makers, AI-powered oracle resolution, and the foundational smart contracts, SDKs, and APIs that enable anyone to launch prediction market platforms.
- Rain SDK (TypeScript) Full-featured TypeScript SDK (@buidlrrr/rain-sdk) providing market queries, transaction builders, positions/portfolio data, account management, transaction history/analytics, and WebSocket subscriptions for developers building prediction market applications on Rain Protocol.
- Rain for AI Agents SDK component specifically formatted for AI coding assistants and autonomous agents, including the AGENTS.md machine-readable reference file and OpenClaw Skills packages enabling AI agents to autonomously create markets, execute trades, and access real-time protocol data.
- Pred Global marketplace aggregator application for prediction markets built on Rain Protocol. Centralizes all protocol-based markets regardless of language or topic, allowing users to discover, track, and participate in forecasts across the entire ecosystem.
- Rain Trade Primary prediction market application powered by Rain Protocol, offering permissionless market creation for any verifiable event, public and private markets, AI-powered resolutions, gas-sponsored trading, and cross-chain funding support for end users.
- Currents
Quantifiable outcome
- RAIN token market cap reached $3.39 billion with 44th ranking among cryptocurrencies
- +2 more outcomes
Companies that use RAIN PROTOCOL LIMITED
Customer profileNamed customers1 record
Segments1 record
Ideal customer profiles3 records
RAIN PROTOCOL LIMITED technology and API
TechnologyTechnology focussed Yes
API detail
- Has API
- Yes
- API docs
- API detail
Core technology
AI maturity
App detail
Integration4 records
AI capability4 records
Feature8 records
RAIN PROTOCOL LIMITED partnerships and signals
Strategic signalPartnerships
Four partnerships are on record, tiered core.
- Olympus AI (Delphi Oracle)coreAI company providing Delphi, the advanced AI-based oracle system for Rain Protocol. Delphi uses a consensus-driven system with five Explorer Agents requiring at least three agreeing for market resolution confirmation. Provides objective, unbiased resolution for publicly verifiable events.
- AlchemycoreInfrastructure provider enabling Rain's account abstraction layer with gas sponsorship. Alchemy smart accounts power the gasless trading experience where users can trade without holding native ETH.
- ChainlinkcoreChainlink VRF (Verifiable Random Function) powers the Entropy Layer's verifiable randomness for high-speed, randomly pre-generated scenarios with instant settlement.
- ArbitrumcoreRain Protocol is built natively on Arbitrum blockchain, which powers prediction markets, automated liquidity, and seamless user experience. Cross-chain support enables deposits from other networks.
Scale indicators6 records
Recent moves6 records
Expansion highlights6 records
RAIN PROTOCOL LIMITED competitors and assessment
Company assessmentBroad incumbents
- Hyperliquid: High-performance decentralized perpetual exchange with growing prediction market features. Competes indirectly for on-chain event-derivative and speculative trading volume.
- dYdX: Decentralized perpetual derivatives exchange. Broader incumbent in on-chain event/derivative trading, with overlapping developer ecosystem on Arbitrum where Rain is natively deployed.
Direct peers
- Kalshi: CFTC-regulated US prediction market exchange for event contracts. Competes for the same forecasting use cases via a compliant fiat-onramp rather than a permissionless crypto protocol.
- Augur: Pioneer Ethereum-based prediction market protocol using reputation-based oracles and REP token. Comparable decentralized prediction market infrastructure with similar AMM-style market creation.
- Azuro Protocol: Decentralized prediction market and liquidity layer focused on sports and gaming outcomes. Competes with Rain's Entropy Layer and Speed Markets apps in fast-settlement, event-derived markets.
- SX Network (SX Bet): Sports-focused prediction market and betting protocol with on-chain settlement. Directly comparable to Rain's sports-prediction use cases, especially around FIFA World Cup timing.
- Polymarket: Leading decentralized prediction market on Polygon with the largest active user base and trading volume in crypto event-derivatives. Direct competitor to Rain Trade and Pred for event-based market share.
- Omen (Gnosis): Gnosis-built decentralized prediction market using conditional tokens and market makers. Overlaps with Rain's permissionless market creation and SDK-driven approach to event forecasting.
Others
- Chainlink: Decentralized oracle network that powers Rain's Entropy Layer via VRF. Enabler/infrastructure provider rather than competitor, but comparable in serving crypto developers with composable oracle primitives.
Emerging players
- Limitless Exchange: Emerging Base-based prediction market with simple UI for event contracts. Targets the same retail-friendly prediction market audience Rain is pursuing via Rain Trade.
Market position
Strengths5 records
Weaknesses5 records
Competitive moat5 records
Key risks6 records
Key highlights7 records
Customer concentration
RAIN PROTOCOL LIMITED social profiles
Digital presenceRAIN PROTOCOL LIMITED compliance and trust
Trust signalCompliance2 records
RAIN PROTOCOL LIMITED financial estimates
Financial estimateRevenue estimate
Valuation estimate
RAIN PROTOCOL LIMITED leadership team
Management profileNumber of profiles
RAIN PROTOCOL LIMITED funding detail
Funding detailFunding overview
Funding rounds
Investors
Funding detail is available on the Subscription and Enterprise plan.Contact sales →
RAIN PROTOCOL LIMITED 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 RAIN PROTOCOL LIMITED
What does RAIN PROTOCOL LIMITED do?
Rain Protocol provides decentralized infrastructure for building and operating prediction markets. Built natively on Arbitrum with cross-chain funding support (Ethereum, Base, BNB Chain, Bitcoin), it offers a TypeScript SDK, smart contract framework, and APIs that allow developers and AI agents to permissionlessly create and trade on both public and private markets. The protocol includes automated market makers for liquidity, an AI-powered oracle (Delphi) for objective resolution, account abstraction with gas sponsorship, and a Chainlink VRF-based Entropy Layer for high-speed markets.
Is RAIN PROTOCOL LIMITED a public or private company?
RAIN PROTOCOL LIMITED is a private company. It is classified as nonprofit foundation owned and is currently operating.
When was RAIN PROTOCOL LIMITED founded?
RAIN PROTOCOL LIMITED was founded in 2025. It employs 1 to 10 people.
Where is RAIN PROTOCOL LIMITED based?
RAIN PROTOCOL LIMITED is headquartered in London, United Kingdom, in the Europe region.
How does RAIN PROTOCOL LIMITED make money?
Four revenue lines are on record. Trading Fees are the primary driver. The others are AI Oracle Fees, entropy Layer Fees and deflationary Token Mechanism.
Who are RAIN PROTOCOL LIMITED's main competitors?
Broad incumbents on record are Hyperliquid and dYdX. Direct peers are Kalshi, Augur, Azuro Protocol, SX Network (SX Bet), Polymarket and Omen (Gnosis). Chainlink is listed as an others. Limitless Exchange is listed as an emerging player.
Does RAIN PROTOCOL LIMITED have an API?
Yes. Rain Protocol provides a TypeScript SDK (@buidlrrr/rain-sdk) for building prediction market applications on Arbitrum. The SDK includes methods for market queries, transaction builders, positions/portfolio data, account management, transaction history/analytics, and WebSocket subscriptions. It operates via Rain API (getPublicMarkets, getMarketDetails), on-chain reads (getMarketPrices, getPositions), and Subgraph queries (getTransactions, getPriceHistory, getPnL). The SDK splits into two classes: Rain (stateless) for queries and transaction building, and RainAA (stateful) for account abstraction via Alchemy smart accounts with gas sponsorship. Additionally, the Entropy Layer SDK (rng-layer-sdk) provides separate TypeScript package for interacting with the limited shared liquidity pool. OpenAPI specs available at rain.one/docs/api-reference/openapi.json. Developer documentation is at rain.one/docs.
What industry is RAIN PROTOCOL LIMITED in?
RAIN PROTOCOL LIMITED's product category is Decentralized Prediction Markets Protocol. Its primary akta.pro industry code is FSADAGAG, Prediction Markets & Event Derivatives (Crypto), with a secondary code of FSAPABAH, Deployment, Automation & DevOps (build pipelines, contract deployment tools). Its NAICS code is 52321 and its SIC code is 6200.