DeFi Intents: Intent-Based Execution Explained

What are DeFi intents?

DeFi intents are a new paradigm where users express what they want to achieve rather than how to achieve it. Instead of manually constructing transactions, users declare their desired outcome:

Traditional Approach	Intent-Based Approach
”Call Uniswap router at 0x… with exactInputSingle, set path to WETH→USDC, amount 1e18…"	"Swap 1 ETH for USDC with best price”
User must know contracts, routes, parameters	User states goal, system handles execution

The intent infrastructure finds the optimal path, handles approvals, and executes the transaction—all from a simple declaration.

How do DeFi intents work?

Intent-based systems have several components:

┌──────────────────────────────────────────────────────────┐
│                    User Intent                            │
│           "Swap 1 ETH → USDC, best price"                │
└──────────────────────────────────────────────────────────┘
                           │
                           ▼
┌──────────────────────────────────────────────────────────┐
│                    Intent Solver                          │
│  • Queries multiple DEXs (Uniswap, Curve, 1inch...)     │
│  • Finds optimal route and price                         │
│  • Handles token approvals                               │
│  • Manages slippage protection                           │
└──────────────────────────────────────────────────────────┘
                           │
                           ▼
┌──────────────────────────────────────────────────────────┐
│                   Execution Layer                         │
│  • Bundles operations efficiently                        │
│  • Submits atomic transaction                            │
│  • Handles gas payment                                   │
└──────────────────────────────────────────────────────────┘

User submits intent: Declares desired outcome
Solver processes: Finds optimal execution path
Quote generated: User sees exact outcome before signing
Atomic execution: All operations execute together

What types of intents are supported?

Biconomy’s intent system supports a wide range of DeFi operations:

Intent Type	Description	Example
Swap	Exchange one token for another	”Swap 100 USDC for ETH”
Bridge	Move assets across chains	”Bridge 1 ETH from Ethereum to Base”
Deposit	Add liquidity or stake	”Deposit 1000 USDC into Aave”
Withdraw	Remove liquidity or unstake	”Withdraw all from Compound”
Borrow	Take a loan	”Borrow 500 USDC against ETH collateral”
Repay	Pay back loans	”Repay 50% of my AAVE debt”

// Intent examples with Biconomy
const swapIntent = {
  type: "intent",
  intent: "swap",
  params: {
    from: { token: "ETH", amount: "1.0" },
    to: { token: "USDC" },
    slippage: 0.5 // 0.5% max slippage
  }
};

const bridgeIntent = {
  type: "intent",
  intent: "bridge",
  params: {
    token: "USDC",
    amount: "1000",
    fromChain: 1,
    toChain: 8453
  }
};

What are intent solvers?

Solvers are specialized services that fulfill user intents by finding optimal execution paths. They compete to provide:

Best prices: Aggregate across DEXs, find arbitrage opportunities
Lowest gas: Optimize calldata and execution path
Fastest execution: Route through liquid pools
MEV protection: Shield users from sandwich attacks

User Intent: "Swap 10 ETH → USDC"
                    │
        ┌───────────┼───────────┐
        ▼           ▼           ▼
   Solver A     Solver B     Solver C
   via Uniswap  via Curve    via 1inch
   $31,250      $31,300      $31,275
        │           │           │
        └───────────┼───────────┘
                    ▼
              Best: Solver B
              User gets $31,300

Biconomy integrates with multiple solver networks to ensure users always get competitive execution.

How do intents differ from regular transactions?

Aspect	Regular Transactions	Intent-Based
Specification	Exact calldata required	Outcome-based declaration
Route finding	User’s responsibility	Solver handles
Optimization	Manual	Automatic
Composability	Complex to chain	Native chaining support
UX	Technical knowledge needed	Simple, declarative
Failure handling	User manages	System optimizes for success

Example comparison:Regular transaction:

// User must know exact contract, function, parameters
const tx = {
  to: "0x68b3465833fb72A70ecDF485E0e4C7bD8665Fc45",
  data: "0x5ae401dc...", // Encoded swap params
  value: parseEther("1.0")
};

Intent-based:

// Just declare what you want
const intent = {
  intent: "swap",
  from: "ETH",
  to: "USDC", 
  amount: "1.0"
};

Can intents span multiple chains?

Yes! Cross-chain intents are a core capability:

const crossChainIntent = {
  instructions: [
    // Intent 1: Swap on source chain
    {
      chainId: 1,
      type: "intent",
      intent: "swap",
      params: { from: "ETH", to: "USDC", amount: "2.0" }
    },
    // Intent 2: Bridge to destination
    {
      type: "intent",
      intent: "bridge",
      params: { 
        token: "USDC",
        fromChain: 1,
        toChain: 8453
      }
    },
    // Intent 3: Deposit on destination
    {
      chainId: 8453,
      type: "intent",
      intent: "deposit",
      params: { protocol: "aave", token: "USDC" }
    }
  ]
};

The system:

Finds optimal swap route on Ethereum
Selects best bridge (cost vs. speed)
Deposits on Base
All with one signature

How does intent pricing work?

When you submit an intent, you receive a quote before execution:

const quote = await biconomy.getQuote({
  intent: "swap",
  from: { token: "ETH", amount: "1.0" },
  to: { token: "USDC" }
});

console.log(quote);
// {
//   inputAmount: "1.0 ETH",
//   outputAmount: "3125.50 USDC",
//   minOutputAmount: "3109.87 USDC", // With 0.5% slippage
//   route: "Uniswap V3 ETH→USDC",
//   gasCost: "$2.50",
//   priceImpact: "0.02%",
//   validUntil: 1699900000
// }

The quote is:

Guaranteed: Execute within validity period for quoted price
Slippage protected: Minimum output amount enforced
Transparent: See route, fees, and price impact

What is intent composability?

Intents can be composed into complex workflows where each step depends on previous outputs:

import { runtime } from "@biconomy/abstractjs";

const composedIntents = [
  // Step 1: Swap ETH to USDC
  {
    type: "intent",
    intent: "swap",
    params: { from: "ETH", to: "USDC", amount: "1.0" }
  },
  // Step 2: Use EXACT output from step 1
  {
    type: "intent",
    intent: "deposit",
    params: {
      protocol: "aave",
      token: "USDC",
      amount: runtime.outputOf(0) // Dynamic reference
    }
  },
  // Step 3: Borrow against the deposit
  {
    type: "intent",
    intent: "borrow",
    params: {
      protocol: "aave",
      token: "DAI",
      amount: runtime.multiply(runtime.outputOf(0), 0.5) // 50% of deposited
    }
  }
];

No leftover tokens, no estimation errors—execution is perfectly composed.

Are intents MEV-protected?

Yes, intent-based execution provides MEV protection through several mechanisms:

Protection	How It Works
Private submission	Intents don’t enter public mempool
Solver competition	Solvers compete to give best price
Slippage bounds	Guaranteed minimum output
Atomic execution	No intermediate states to exploit
Trusted execution	Bundlers submit on user’s behalf

Unlike regular DEX swaps that can be sandwiched, intent-based swaps are protected from front-running and MEV extraction.

How do I use intents with Biconomy?

Using AbstractJS SDK:

import { createMeeClient, buildIntent } from "@biconomy/abstractjs";

const client = await createMeeClient({ account: smartAccount });

// Build intent-based instructions
const instructions = [
  buildIntent({
    type: "swap",
    from: { token: "ETH", chainId: 1, amount: "1.0" },
    to: { token: "USDC" }
  }),
  buildIntent({
    type: "bridge",
    token: "USDC",
    fromChain: 1,
    toChain: 8453
  })
];

// Get quote and execute
const quote = await client.getQuote({ instructions });
const result = await client.executeQuote(quote);

Using Supertransaction API:

curl -X POST "https://api.biconomy.io/v1/intent" \
  -H "x-api-key: $API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
    "intent": "swap",
    "params": {
      "from": { "token": "ETH", "amount": "1.0" },
      "to": { "token": "USDC" },
      "slippage": 0.5
    },
    "sender": "0x..."
  }'

Concepts

How-To Guides

DeFi Intents: Intent-Based Execution Explained

DeFi Intents: Intent-Based Execution Explained

Explore intent-based execution

Onchain Orchestration

Multi-Chain Execution

Concepts

How-To Guides

​DeFi Intents: Intent-Based Execution Explained

​Explore intent-based execution

Onchain Orchestration

Multi-Chain Execution

DeFi Intents: Intent-Based Execution Explained

Explore intent-based execution