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Strategy Execution Engine

Pre-approved trading strategies that execute automatically when conditions are met — oracle signals, price targets, time schedules — without per-trade signing and without handing over private keys. The user delegates spending authority; the strategy service triggers; Lighthouse validates; the protocol routes through any whitelisted DEX.

Tributary Models PayAsYouGoSubscription

Pre-approved trading strategies that execute automatically when conditions are met

Trading bots exist. Session keys exist. What doesn’t exist is non-custodial, condition-gated, third-party-triggerable strategy execution.

Core Mechanics

A strategy provider (or the user themselves) configures ComposablePolicy instances that encode trading logic:

  1. Pre-validation (Lighthouse) — Evaluates the trigger condition against oracle data: price thresholds (Pyth/Switchboard feed), technical indicators (on-chain TWAP), timing windows, or composite conditions (“price below threshold AND RSI < 30”). The strategy only fires when the signal is confirmed on-chain.
  2. Pull (Token Delegation) — Claims the trade size from the user’s wallet. Capped by the schedule — the strategy cannot trade more than the user approved.
  3. Forward (CPI) — Routes through a whitelisted DEX: Jupiter V6 for best-execution swaps, Meteora DLMM for concentrated liquidity, Raydium AMM for standard swaps. Slippage-protected via min_output_amount.
WHEN (condition: SOL/USD < $100 via Pyth oracle)
  → VALIDATE (Lighthouse: assert Pyth SOL/USD price < 100.0)
  → PULL (500 USDC)
  → FORWARD (Jupiter swap: 500 USDC → SOL, min_output: 4.5 SOL)
  → LAND (SOL → user wallet)

Any third party can trigger execution when the condition is met — the strategy service, a keeper bot, or even the user themselves. Permissionless triggering, custodied funds, validated conditions.

Business Scenarios

  • DCA with conditional entry: “Buy $200 SOL every Monday, but only if price is below the 7-day TWAP.” Lighthouse validates the TWAP condition. The DCA executes only at favorable prices.
  • Grid trading: Multiple policies at different price levels: “Buy at $90, sell at $110, buy at $85, sell at $115.” Each is a separate ComposablePolicy with a Lighthouse price gate. The grid runs autonomously.
  • Take-profit / stop-loss ladder: User holds SOL. Policies: “Sell 25% if SOL > $200,” “Sell 50% if SOL > $300,” “Sell all if SOL < $80.” Lighthouse checks price; protocol executes. No CEX, no keeper bot, no per-order signing.
  • Signal-driven execution: A strategy service publishes on-chain signals (attested via oracle). Lighthouse validates the signal. Strategy executes: pull → swap → land. The user approved the signal source at setup.

Trust Boundary Design

  • Hard trade caps: max_amount_per_period and max_chunk_amount in the schedule bound every trade. A strategy cannot exceed the user’s approved risk envelope, even if signals fire rapidly.
  • Signal source lock: The Lighthouse assertion references specific oracle accounts. A strategy service cannot swap the signal source post-creation — the user approved signals from Pyth, and only Pyth gates execution.
  • DEX allowlist: Forward targets are hard-coded. A strategy cannot route to an unlisted DEX, even if it offers better prices. New DEXs require a protocol upgrade.
  • Revocation: User revokes delegation → strategy halts. No exit period, no lock-up, no minimum commitment.

Abuse Prevention

  • Instruction-level validation: ByteRangeChecks on the forward CPI instruction ensure the strategy executes the approved instruction (swap) on the approved program (Jupiter), not an arbitrary instruction.
  • Slippage enforcement: min_output_amount in ForwardConfig prevents the triggering party from sandwiching the trade. If a MEV bot front-runs the swap, slippage exceeds the threshold and the transaction reverts.
  • Output-based fees: Protocol fees are on the output amount. A strategy service cannot inflate fees by manipulating trade parameters.
  • Auditable trail: Every strategy execution is on-chain — condition, pull amount, DEX route, slippage, output. Full post-hoc analysis possible.

Psychological Hook

“My strategy runs itself.” The relief of knowing your trading plan executes automatically when conditions are met — no missed entries, no emotional decisions, no 3am wake-up calls to catch a price move.

  • Set-and-forget: Configure once, execute continuously
  • Emotional detachment: Strategy executes based on signals, not feelings
  • Transparency: Every trade is on-chain and verifiable
  • Control: User retains custody, only delegates spending authority

Brief Market Research

Automated trading exists on Solana, but no solution combines non-custodial execution with protocol-level condition validation.

Current alternatives:

  • Robo-DeFi-Advisor: AI-powered portfolio management — autonomous decisions, no user-defined conditions
  • Ava AI Agent: AI-driven trading — autonomous, not condition-gated
  • SeiLens: Portfolio analytics — read-only, no execution capabilities
  • Autonomous Finance Dexi: DeFi agent — AI-managed, not user-defined strategies
  • Singularry: AI portfolio advisor — recommendations only, no automated execution
  • zkde.fi: DeFi rebalancer — rebalancing only, not strategy execution

The gap: Every existing solution either makes autonomous decisions (AI) or provides read-only analytics. None enable users to define declarative trading strategies with oracle-validated conditions and non-custodial execution. Tributary’s v1 composable contract with Lighthouse validation solves this natively.

Business Model

Revenue streams:

  • Execution fee: 0.1-0.5% per trade executed
  • Platform subscription: $50-500/month for strategy dashboard and management
  • Premium strategies: Advanced condition types, multi-asset strategies ($100-1,000/month)
  • Signal marketplace: Trading signal providers pay for placement ($500-5,000/month)

Unit economics:

  • 1,000 active strategies × $100 average monthly volume = $100,000/month processed
  • Execution fee at 0.25% = $250/month
  • 100 premium users × $200/month = $20,000/month
  • Total: ~$20,250/month at early stage

Technical Specifications

Architecture

Strategy Service → Defines conditions and trade parameters
  ↓
Lighthouse → Validates trigger conditions against oracle data
  ↓
Tributary Pull → Claims trade amount from user wallet
  ↓
Forward CPI → Routes through whitelisted DEX (Jupiter, Meteora, Raydium)
  ↓
User Wallet → Receives output tokens
  ↓
Audit Trail → Every execution recorded on-chain

How This Hooks Into Tributary

  • v1 Composable Contract: Direct implementation — ComposablePolicy with condition, validation, and forward targets
  • Lighthouse integration: Critical — condition validation ensures strategy only fires when signals are confirmed
  • Guardian module: Rate limiting, abuse prevention, emergency stops for strategy execution
  • Loyalty module: Volume discounts for high-frequency traders, performance rewards for successful strategies
  • Frontend: Next.js strategy dashboard with condition builder
  • Backend: Rust strategy engine, Redis for oracle caching, PostgreSQL for strategy storage
  • Database: PostgreSQL for strategy/user data, Redis for real-time oracle feeds
  • Solana: Tributary v1 program, Lighthouse for validation, Jupiter/Meteora/Raydium for execution
  • Oracles: Pyth/Switchboard for price feeds, custom oracles for technical indicators

MVP Scope

  1. Basic condition types (price threshold, time-based)
  2. Single forward target (Jupiter swap)
  3. Lighthouse validation for conditions
  4. Simple strategy dashboard
  5. Basic audit trail

Non-Technological Requirements

  • Legal review for automated trading (securities regulations?)
  • Oracle reliability assessment (what happens if Pyth goes down?)
  • User education on strategy risks and condition design
  • MEV protection considerations (Jito bundles, private mempools)
  • Performance monitoring for strategy execution metrics

Potential Risks

  • MEV exposure: Despite slippage protection, strategy transactions are visible in the mempool. Deterministic strategies (always buy at $100) can be front-run. Jito bundles or private mempools mitigate this.
  • Strategy overlap: Multiple policies on the same asset can conflict — e.g., a buy signal and sell signal triggering simultaneously. Careful policy design is required.
  • Oracle dependency: The strategy is only as reliable as its oracle. Pyth/Switchboard are robust but not infallible. Price spikes during oracle updates can trigger false executions.
  • Gas economics: For small trade sizes, per-execution gas + protocol fees may erode returns. Strategies work best with meaningful trade sizes or longer intervals.
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