starkfi

StarkFi

The AI-native DeFi toolkit for Starknet.
A production-grade CLI and MCP server that gives both developers and AI agents full access to swaps, multi-swap, atomic batch transactions, staking, lending, portfolio management, and gasless transactions — all powered by the Starkzap SDK.

npx starkfi@latest --help

Why StarkFi?

Most DeFi tools are built for humans clicking buttons. StarkFi is built for agents.

• 🤖 27 MCP tools — Any AI assistant (Cursor, Claude, Antigravity) can execute DeFi operations autonomously
• ⚡ Atomic Batching — Combine swap + stake + lend + send into a single multicall transaction
• 💸 Gas Abstraction Built-In — Pay gas in STRK, ETH, USDC, USDT, or DAI via AVNU Paymaster, or let the developer sponsor gas entirely (gasfree mode)
• 📊 Full Portfolio — Unified view of balances, staking positions, and lending positions with USD values
• 🧪 Simulate Everything — Dry-run any transaction to estimate fees before broadcasting

Architecture

┌──────────────────────────────────────────────────────────────────────────┐
│                              StarkFi                                     │
│                                                                          │
│  ┌──────────┐     ┌─────────────────────┐     ┌───────────────────────┐  │
│  │   CLI    │     │    MCP Server       │     │    Agent Skills       │  │
│  │  (30+    │     │    (27 tools)       │     │    (10 workflows)     │  │
│  │ commands)│     │ stdio transport     │     │   npx starkfi@latest  │  │
│  └────┬─────┘     └──────────┬──────────┘     └──────────┬────────────┘  │
│       │                      │                           │               │
│       └──────────────────────┼───────────────────────────┘               │
│                              ▼                                           │
│  ┌──────────────────────────────────────────────────────────────────┐    │
│  │                      Service Layer                               │    │
│  │  ┌──────────┐  ┌──────────┐  ┌────────┐  ┌──────────┐            │    │
│  │  │ Fibrous  │  │ Staking  │  │  Vesu  │  │  Batch   │            │    │
│  │  │  Swap    │  │ Lifecycle│  │   V2   │  │ Multicall│            │    │
│  │  └────┬─────┘  └────┬─────┘  └───┬────┘  └────┬─────┘            │    │
│  │       └─────────────┴────────────┴────────────┘                  │    │
│  │                       │                                          │    │
│  │       ┌───────────────┴───────────────────────────┐              │    │
│  │       │       Starkzap SDK (starkzap v1.0.0)      │              │    │
│  │       │  Wallet · TxBuilder · Tokens · Paymaster  │              │    │
│  │       └───────────────┬───────────────────────────┘              │    │
│  └───────────────────────┼──────────────────────────────────────────┘    │
│                          ▼                                               │
│  ┌──────────────────────────────────────┐  ┌──────────────────────┐      │
│  │  Auth Server (Hono + Privy TEE)      │  │  AVNU Paymaster      │      │
│  │  Email OTP · Wallet · Sign · Gas     │  │  Gas Abstraction     │      │
│  └──────────────────────────────────────┘  └──────────────────────┘      │
└──────────────────────────────────────────────────────────────────────────┘
                              │
                              ▼
                    ┌──────────────────┐
                    │  Starknet (L2)   │
                    └──────────────────┘

Starkzap Modules Used

StarkFi leverages all core Starkzap modules:

Module	Usage in StarkFi
Wallets	PrivySigner + ArgentXV050Preset for email-based wallet management via Privy TEE
Gasless Transactions (Paymaster)	Paymaster integration with 5 gas tokens (STRK, ETH, USDC, USDT, DAI) + developer-sponsored gasfree mode
Staking	Multi-token staking lifecycle (STRK, WBTC, tBTC, SolvBTC, LBTC) — stake, claim, compound, unstake (2-step)
TxBuilder	Atomic multicall batching — combine swap + stake + supply + send in one transaction
ERC-20 Tokens	Token presets, balance queries, transfers, approvals

Features

🔄 Intelligent Swap Routing (Fibrous)

DEX-aggregated swaps with optimal routing. Single swaps, multi-swap (up to 3 pairs), and batch routing.

npx starkfi@latest trade 100 USDC ETH --slippage 1
npx starkfi@latest multi-swap "100 USDC>ETH, 50 USDT>ETH"

⚛️ Atomic Transaction Batching

Bundle multiple DeFi operations into a single Starknet multicall. Minimum 2 operations.

npx starkfi@latest batch \
  --swap "100 USDC ETH" \
  --stake "50 STRK karnot" \
  --supply "200 USDC Prime" \
  --send "10 STRK 0xAddr"

🥩 Multi-Token Staking Lifecycle

Full staking lifecycle across multiple validators with STRK, WBTC, tBTC, SolvBTC, and LBTC support.

npx starkfi@latest stake 100 -v karnot
npx starkfi@latest rewards -v karnot --compound
npx starkfi@latest unstake intent -v karnot -a 50
npx starkfi@latest unstake exit -v karnot

🏦 Lending & Borrowing (Vesu V2)

Supply collateral, borrow assets, monitor health factors, and atomically close positions.

npx starkfi@latest lend-supply 100 -p Prime -t STRK
npx starkfi@latest lend-borrow -p Prime \
  --collateral-amount 200 --collateral-token STRK \
  --borrow-amount 50 --borrow-token USDC
npx starkfi@latest lend-status                                                # Auto-scan all pools
npx starkfi@latest lend-status -p Prime --collateral-token STRK --borrow-token USDC  # Specific position
npx starkfi@latest lend-close -p Prime --collateral-token STRK --borrow-token USDC

💸 Gas Abstraction

Users pay gas fees in their preferred ERC-20 token via AVNU Paymaster — no native STRK or ETH required. Alternatively, developers can sponsor gas entirely.

# Pay gas in USDC instead of STRK
npx starkfi@latest config set-gas-token USDC

# Developer pays all gas (gasfree mode)
npx starkfi@latest config set-gasfree on

Mode	Who Pays	Gas Tokens	Description
Gasless (default)	User	STRK, ETH, USDC, USDT, DAI	User pays in ERC-20 via Paymaster
Gasfree	Developer	—	Developer sponsors all gas

🧪 Simulation / Dry-Run

Estimate fees and validate any transaction before broadcasting.

npx starkfi@latest trade 100 USDC ETH --simulate
# → mode: SIMULATION, estimatedFee: 0.054 STRK ($0.0024), callCount: 4

📊 Portfolio Dashboard

Consolidated view of all DeFi positions in one call.

npx starkfi@latest portfolio
# → Token Balances (USD), Staking Positions, Lending Positions, Total Value

AI Integration (MCP)

StarkFi exposes 27 MCP tools via stdio transport, enabling AI assistants to execute DeFi operations.

# Start the MCP server
npx starkfi@latest mcp-start

Tool Categories

Category	Tools	Count
Auth & Config	get_auth_status, config_action	2
Wallet	get_balance, get_portfolio, deploy_account, send_tokens, get_tx_status	5
Trade	get_swap_quote, swap_tokens, get_multi_swap_quote, multi_swap, batch_execute	5
Staking	list_validators, list_pools, get_staking_info, get_stake_status, stake_tokens, unstake_tokens, claim_rewards, compound_rewards	8
Lending	list_lending_pools, get_lending_position, supply_assets, withdraw_assets, borrow_assets, repay_debt, close_position	7

Example — AI Agent Workflow

User: "Swap 100 USDC to STRK and stake half on Karnot"

Agent:
  1. get_swap_quote(amount: "100", from: "USDC", to: "STRK")   → 500 STRK
  2. swap_tokens(amount: "100", from: "USDC", to: "STRK")       → txHash: 0x...
  3. stake_tokens(amount: "250", validator: "karnot", token: "STRK") → txHash: 0x...

MCP Configuration

Add to your AI assistant's MCP config (Cursor, Claude, etc.):

{
	"mcpServers": {
		"starkfi": {
			"command": "npx",
			"args": ["-y", "starkfi@latest", "mcp-start"]
		}
	}
}

For the complete tool registry and schemas, see MCP Documentation.

Agent Skills

StarkFi ships with 10 agent skills — structured instruction sets that teach AI coding assistants how to use StarkFi without custom prompting.

Category	Skills
Auth	authenticate-wallet
Wallet Data	balance, portfolio
Transactions	send, trade, multi-swap, batch, staking, lending
Utility	config

# Install skills for your AI assistant
npx skills add ahmetenesdur/starkfi

See Skills Documentation for details.

Quick Start

Prerequisites

• Node.js v18+
• StarkFi Auth Server running (required for Privy email OTP and Paymaster proxy)

1. Authenticate

npx starkfi@latest auth login [e-mail]
npx starkfi@latest auth verify [e-mail] <OTP_CODE>

2. Deploy Account

npx starkfi@latest deploy

3. Check Balance

npx starkfi@latest balance

4. Start Trading

npx starkfi@latest trade 10 STRK ETH --simulate    # Preview first
npx starkfi@latest trade 10 STRK ETH               # Execute

Command Reference

Session & Wallet

Command	Description
auth login <email>	Start email OTP authentication
auth verify <email> <code>	Complete authentication
auth logout	Terminate session
status	Check auth status and API health
address	Display Starknet address
deploy	Deploy smart account on-chain
balance [--token <symbol>] [--json]	Query token balances
send <amount> <token> <recipient> [--simulate] [--json]	Transfer tokens
portfolio [--json]	Full DeFi portfolio

Trading (Fibrous)

Command	Description
trade <amount> <from> <to> [--slippage <%>] [--simulate] [--json]	Swap tokens
multi-swap "<pairs>" [--slippage <%>] [--simulate] [--json]	Multi-pair swap (2-3 pairs)

Batching (Multicall)

Command	Description
batch [--simulate] --swap "..." --stake "..." --supply "..." --send "..."	Atomic multicall (min 2 ops)

Staking

Command	Description
validators [--json]	List active validators
pools <validator> [--json]	Show delegation pools
stake <amount> --validator <name> [--token <symbol>] [--simulate]	Stake tokens
stake-status [validator] [--json]	Staking dashboard
rewards --validator <name> [--token <symbol>] <--claim|--compound>	Manage rewards
unstake <intent|exit> --validator <name> [--token <symbol>] [--amount <n>]	Unstake (2-step)

Lending (Vesu V2)

Command	Description
lend-pools [name]	List lending pools
lend-supply <amount> -p <pool> -t <token>	Supply assets
lend-withdraw <amount> -p <pool> -t <token>	Withdraw assets
lend-borrow -p <pool> --collateral-amount <n> --collateral-token <t> --borrow-amount <n> --borrow-token <t> [--use-supplied]	Borrow
lend-repay <amount> -p <pool> -t <token> --collateral-token <t>	Repay debt
lend-status [-p <pool> --collateral-token <t> [--borrow-token <t>]]	Position status (auto-scan if no args)
lend-close -p <pool> --collateral-token <t> --borrow-token <t>	Close position atomically

Configuration

Command	Description
config list	Show current configuration
config reset	Reset all settings to defaults
config set-rpc <url>	Set custom RPC endpoint
config get-rpc	Show current RPC
config set-network <mainnet|sepolia>	Switch network
config set-gas-token <token|reset>	Set gas payment token
config set-gasfree <on|off>	Toggle developer-sponsored gas
tx-status <hash>	Check transaction status

Auth Server

StarkFi includes a dedicated authentication server (server/) built for secure, non-custodial wallet management.

Route Groups

Route	Purpose
/auth	Email OTP login and verification via Privy
/wallet	Wallet creation and address retrieval
/sign	Transaction signing via Privy TEE (non-custodial)
/paymaster	Paymaster proxy for gas abstraction

Security

• CORS with configurable allowlist (ALLOWED_ORIGINS)
• Secure headers via hono/secure-headers
• Body size limit (1MB)
• Request ID tracking for observability
• Graceful shutdown (SIGTERM/SIGINT with 5s force-kill)

See server/README.md for setup instructions.

Tech Stack

Layer	Technology
Core SDK	Starkzap v1.0.0
CLI	Commander.js v14.0.3
MCP	@modelcontextprotocol/sdk v1.27.1
Schema	Zod v4.3.6
Auth Server	Hono v4.12.7 + Privy TEE
DEX Routing	Fibrous Aggregator
Lending	Vesu V2 Protocol
Gas	AVNU Paymaster

Error Handling

StarkFi implements a robust error handling system with a custom StarkfiError class and 25 specific error codes organized by domain:

Domain	Error Codes
Auth	AUTH_REQUIRED, AUTH_FAILED, SESSION_EXPIRED
Wallet	WALLET_NOT_DEPLOYED, WALLET_NOT_FOUND, INSUFFICIENT_BALANCE
Network	NETWORK_ERROR, RATE_LIMITED, TX_FAILED, TX_NOT_FOUND, PAYMASTER_ERROR
Validation	INVALID_CONFIG, INVALID_ADDRESS, INVALID_AMOUNT
DeFi	SWAP_FAILED, NO_ROUTE_FOUND, SLIPPAGE_EXCEEDED, STAKING_FAILED, LENDING_FAILED, POOL_NOT_FOUND, EXIT_NOT_READY, VALIDATOR_NOT_FOUND
System	SIMULATION_FAILED, BATCH_LIMIT_EXCEEDED, UNKNOWN

All network operations include automatic retry with exponential backoff (500ms base, max 2 retries). Parallel operations use a sliding-window concurrency pool to prevent RPC rate-limiting.

Readable Starknet Errors

Raw Starknet JSON-RPC errors (hex-encoded Cairo strings like u256_sub Overflow) are automatically parsed into human-readable messages:

Raw Error	Displayed Message
u256_sub Overflow	Insufficient balance — you don't have enough tokens (including gas fees)
ERC20: insufficient allowance	Token approval required — not enough allowance for this operation
UNAUTHORIZED	Unauthorized — session may have expired, try: starkfi auth login
argent/multicall-failed	One or more calls in the transaction failed
dusty-collateral-balance	Collateral amount is below the pool's minimum (dust limit). Please increase the amount.
dusty-debt-balance	Borrow amount is below the pool's minimum (dust limit). Please increase the amount.

This applies to both CLI output (formatError) and MCP responses (withErrorHandling).

Development

Setup

git clone https://github.com/ahmetenesdur/starkfi.git
cd starkfi
pnpm install

Build

pnpm build           # Compile TypeScript → dist/

Dev Mode

pnpm dev -- --help   # Run with tsx (hot-reload)

Lint & Format

pnpm lint            # ESLint
pnpm format          # Prettier

Auth Server

cd server
pnpm install
cp .env.example .env    # Configure environment
pnpm dev

Contributing

Contributions are welcome! Here's how to get started:

• Fork the repository and create a feature branch
• Install dependencies: pnpm install
• Make your changes following the existing code style (TypeScript strict mode, ESLint + Prettier)
• Build and verify: pnpm build && pnpm lint
• Submit a pull request with a clear description

For bug reports and feature requests, please open an issue.

License

MIT — ahmetenesdur