Trading on Uniswap

Uniswap V2 and V3 are both deployed on Abstract mainnet and testnet. This skill covers swaps, quotes, and basic LP operations using AGW CLI commands.

ABI Format

The AGW CLI requires full JSON ABI objects, not human-readable strings. Every abi array element must be an object with type, name, inputs, outputs, and stateMutability fields. Human-readable signatures in the references are for documentation — expand them to full JSON when constructing CLI commands.

Operating Rules

• Check wallet balances with agw wallet balances or agw wallet tokens list before proposing any swap that depends on holdings.
• Default to V2 for simple swaps between common pairs. Prefer V3 when the user wants better pricing on deep-liquidity pairs or specifies a fee tier.
• Preview every swap, approval, and LP action with --dry-run before execution.
• Never hardcode amountOutMin to "0" — always derive from a quote minus slippage tolerance.
• Set deadlines to current time + 300-1200 seconds (5-20 minutes). Do not omit deadlines.
• Route generic session, wallet, and transaction safety questions back to authenticating-with-agw, reading-agw-wallet, and executing-agw-transactions.
• Read references/contracts.md for all deployed addresses.
• Read references/v2-entrypoints.md for V2 router function signatures and swap examples.
• Read references/v3-entrypoints.md for V3 router, quoter, and position manager signatures.

V2 vs V3 Decision

digraph v2_v3 {
    "User wants to swap?" [shape=diamond];
    "Simple pair, any fee?" [shape=diamond];
    "V2 Router" [shape=box];
    "V3 SwapRouter02" [shape=box];

    "User wants to swap?" -> "Simple pair, any fee?";
    "Simple pair, any fee?" -> "V2 Router" [label="yes, or unsure"];
    "Simple pair, any fee?" -> "V3 SwapRouter02" [label="specific fee tier\nor better pricing needed"];
}

• V2: Simpler ABI, single fee tier per pair, swapExactETHForTokens handles WETH wrapping. Good default.
• V3: Multiple fee tiers (500 = 0.05%, 3000 = 0.3%, 10000 = 1%). Better capital efficiency. Requires fee tier selection. Deadline is NOT in the swap struct — wrap the call in multicall(uint256 deadline, bytes[] data).

Common Tokens (Mainnet)

Token	Address	Decimals
WETH	0x3439153EB7AF838Ad19d56E1571FBD09333C2809	18
USDC	0x84A71ccD554Cc1b02749b35d22F684CC8ec987e1	6
USDT	0x0709F39376dEEe2A2dfC94A58EdEb2Eb9DF012bD	6

Swap Workflow

1. Check balances: agw wallet balances --json '{"fields":["accountAddress","nativeBalance"]}'
2. Get a quote (read-only, no broadcast):
   • V2: getAmountsOut(amountIn, path) via agw contract write --dry-run
   • V3: quoteExactInputSingle(params) via QuoterV2 agw contract write --dry-run
3. Calculate amountOutMin: quote result * (1 - slippageTolerance). Use 0.5% for stablecoin pairs, 1-2% for volatile pairs.
4. Preview the swap: agw contract write --json '{...}' --dry-run
5. Execute only after user confirms: agw contract write --json '{...}' --execute
6. Verify: agw wallet balances or agw wallet tokens list to confirm receipt.

Batching Approve + Swap

Abstract's native account abstraction enables atomic batching via agw tx calls (EIP-5792 sendCalls). This is the idiomatic approach — simpler than Permit2.

agw tx calls accepts only {to, data, value} per call — raw hex-encoded calldata, NOT ABI-level abi/functionName/args. Encode each call's calldata before passing it. The approve selector is 0x095ea7b3; swap selectors vary by function.

agw tx calls --json '{
  "calls": [
    { "to": "<TOKEN>", "data": "0x095ea7b3<spender_padded><amount_padded>", "value": "0" },
    { "to": "<ROUTER>", "data": "<encoded_swap_calldata>", "value": "0" }
  ]
}' --dry-run

Both calls execute atomically — if either reverts, both revert. Always preview first. Approve only the exact swap amount, not type(uint256).max.

For readable command construction, use agw contract write for individual calls (supports ABI-level args) and reserve agw tx calls for when atomicity across multiple calls is required.

DexScreener for Price Discovery

Use DexScreener as a fuzzy discovery surface when the exact pair or pool is unknown:

curl -Ls 'https://api.dexscreener.com/latest/dex/search/?q=<token-symbol>%20abstract' \
  | jq '.pairs[:5] | map(select(.chainId=="abstract")) | map({dexId, base:.baseToken.symbol, quote:.quoteToken.symbol, pairAddress, priceUsd})'

Do not treat DexScreener as authoritative for pair existence. Confirm on-chain via factory getPair() (V2) or pool lookup (V3).

Gas Considerations

Abstract runs ZKsync VM. Gas costs can be 1.5-4x higher than native EraVM for EVM-compiled contracts. Include a ~2x buffer over estimated gas usage when setting gas limits manually.

Error Handling

Error	Cause	Fix
INSUFFICIENT_OUTPUT_AMOUNT	Slippage exceeded	Increase amountOutMin tolerance or retry
EXPIRED	Deadline passed	Use a fresh deadline
TRANSFER_FROM_FAILED	Insufficient allowance or balance	Check approval and balance
INSUFFICIENT_LIQUIDITY	Pool has no liquidity for this pair	Try a different pair route or DEX

Escalation

• Route to executing-agw-transactions for general transaction safety and preview-first discipline.
• Route to reading-agw-wallet for balance and token inventory queries.
• Route to trading-on-aborean if the user mentions Aborean-specific pools, veABX, or gauge voting.