defi-skills 0.3.0

Multi-chain DeFi transaction builder — translates natural language into unsigned, ABI-encoded payloads across Ethereum, Arbitrum, Base, Optimism, Polygon, and Sepolia

defi-skills

Translate natural language into unsigned DeFi transaction payloads. A data-driven playbook engine resolves human-readable parameters (token symbols, ENS names, decimal amounts) into ABI-encoded calldata, with zero protocol-specific code in the engine.

Give your agent DeFi superpowers

Claude Code:

/plugin marketplace add NethermindEth/defi-skills
/plugin install defi-skills@nethermind-defi-skills

OpenClaw:

npx clawhub install defi-skills

That's it. Your agent can now build DeFi transactions:

"Supply 100 USDC to Aave" · "Swap 0.5 ETH for USDC on Uniswap" · "Stake 5 ETH on Lido"

https://github.com/user-attachments/assets/cdc2fd63-b007-40a4-900e-a6f775b6e9fa

Install

pip install defi-skills

Or from source:

git clone https://github.com/NethermindEth/defi-skills
cd defi-skills
python3 -m venv .venv && source .venv/bin/activate
pip install -e .

Quick Start

defi-skills config setup                  # interactive wizard
defi-skills actions                       # list all actions
defi-skills actions --chain-id 11155111   # list Sepolia actions

Build unsigned transactions (fully deterministic, no LLM requierd):

# Mainnet
defi-skills build --action aave_supply --args '{"asset":"USDC","amount":"500"}' --json

# Sepolia
defi-skills build --action aave_supply --args '{"asset":"WETH","amount":"1"}' --chain-id 11155111 --json

# More examples
defi-skills build --action uniswap_swap --args '{"asset_in":"WETH","asset_out":"USDC","amount":"0.5"}' --json
defi-skills build --action lido_stake --args '{"amount":"5"}' --json
defi-skills build --action weth_wrap --args '{"amount":"2"}' --json

Interactive chat mode (requires LLM API key):

defi-skills chat

Output

{
  "success": true,
  "transactions": [
    {
      "type": "approval",
      "raw_tx": { "chain_id": 1, "to": "0xA0b8...", "value": "0", "data": "0x095ea7b3..." }
    },
    {
      "type": "action",
      "action": "aave_supply",
      "function_name": "supply",
      "raw_tx": { "chain_id": 1, "to": "0x8787...", "value": "0", "data": "0x617ba037..." }
    }
  ]
}

Each raw_tx contains {chain_id, to, value, data} -- everything needed to sign and broadcast. The tool never signs or broadcasts. Gas estimation and nonce management are left to the signing wallet.

Supported Protocols

Protocol	Chains	Actions
Native ETH	All	transfer_native
ERC-20	All	transfer_erc20
ERC-721	All	transfer_erc721
WETH	Mainnet, Arbitrum, Base, Optimism, Sepolia	weth_wrap, weth_unwrap
Aave V3	Mainnet, Arbitrum, Base, Optimism, Polygon, Sepolia	aave_supply, aave_withdraw, aave_borrow, aave_repay, aave_set_collateral, aave_repay_with_atokens, aave_claim_rewards
Uniswap V3	Mainnet, Arbitrum, Base, Optimism, Polygon, Sepolia	uniswap_swap, uniswap_lp_mint, uniswap_lp_collect, uniswap_lp_decrease, uniswap_lp_increase
Compound V3	Mainnet, Arbitrum, Base, Optimism, Polygon	compound_supply, compound_withdraw, compound_borrow, compound_repay, compound_claim_rewards
Balancer V2	Mainnet, Arbitrum, Base, Optimism, Polygon	balancer_swap, balancer_join_pool, balancer_exit_pool
Lido	Mainnet	lido_stake, lido_wrap_steth, lido_unwrap_wsteth, lido_unstake, lido_claim_withdrawals
Curve	Mainnet	curve_add_liquidity, curve_remove_liquidity, curve_gauge_deposit, curve_gauge_withdraw, curve_mint_crv
MakerDAO DSR	Mainnet	maker_deposit, maker_redeem
Rocket Pool	Mainnet	rocketpool_stake, rocketpool_unstake
EigenLayer	Mainnet	eigenlayer_deposit, eigenlayer_delegate, eigenlayer_undelegate, eigenlayer_queue_withdrawals, eigenlayer_complete_withdrawal
Pendle V2	Mainnet	pendle_swap_token_for_pt, pendle_swap_pt_for_token, pendle_swap_token_for_yt, pendle_swap_yt_for_token, pendle_add_liquidity, pendle_remove_liquidity, pendle_mint_py, pendle_redeem_py, pendle_claim_rewards
Fibrous	Base	fibrous_swap

How It Works

The engine has two modes: build (deterministic, no LLM) and chat (interactive LLM agent on top). Both use the same pipeline:

1. Playbooks -- JSON files define each protocol's actions, parameters, and ABI mappings. Chain-agnostic: no hardcoded addresses.
2. ChainResources -- Per-chain contract addresses in data/chains/{chain_id}/{protocol}.json. Supports action overrides (different ABIs) and token overrides (different addresses) per chain.
3. Resolvers -- Pure functions that transform human inputs (token symbols, ENS names, amounts) into on-chain values (addresses, wei, calldata).
4. Encoder -- Maps resolved values to ABI parameters and produces the final {to, value, data}.

For the full component breakdown, see docs/architecture.md.

Adding a New Protocol

Use the Claude Code agent for the fastest path:

@playbook-generator Add Morpho protocol

Or generate manually:

python scripts/generate_playbook.py \
  --protocol morpho_blue \
  --contracts "pool=0xBBBB..." \
  --functions supply,withdraw,borrow,repay

See CONTRIBUTING.md for the full walkthrough, including multi-chain support and fork validation.

Configuration

defi-skills config setup   # interactive wizard

Key environment variables:

Variable	Required for
WALLET_ADDRESS	All commands
ALCHEMY_API_KEY	On-chain quotes, ENS, balance queries (enable all chains in your Alchemy dashboard)
ONEINCH_API_KEY	Token discovery on L2s (Arbitrum, Base, Optimism, Polygon)
ANTHROPIC_API_KEY	Chat mode only

See docs/configuration.md for the full list.

Safety

• Output is always unsigned. The tool never signs or broadcasts.
• No private keys involved at any stage.
• All addresses EIP-55 checksummed.
• DEX operations include on-chain quoting with configurable slippage protection.
• Resolvers raise errors on failure. Broken transactions are never silently produced.

Known Limitations

• 6 chains: Mainnet, Arbitrum, Base, Optimism, Polygon, and Sepolia. Adding a protocol to an existing chain requires only data files. Adding a new chain also requires registering it in chains.py.
• No gas estimation -- the signing wallet handles gas and nonce.
• Single-hop swaps only on Uniswap and Balancer.
• Static contract addresses -- protocol upgrades require manual updates to chain resource files.

Tests

pip install -e ".[dev]"
pytest tests/ -v   # fully offline, no API keys needed

License

MIT