HookLine

Hookline is live on Robinhood Chain. It is a swap that checks every pool before you trade: Uniswap's new Aggregator Hooks plug in. Then it splits your order for the best price. hookline.trade CA : 0xde36bc5f7e2a2e5e04ddb9dcc7aad819ec354c07

Signed for this call. Nothing more. When an agent pays Hookline with x402, it signs one EIP-3009 authorization in USDG on Robinhood Chain. That signature is locked to: - exactly 0.01 USDG, to the unit - one recipient: the payTo address in the 402 - one nonce, settled once: a replay is refused - a short window: the 402 asks for 120 seconds Every field is checked before the call runs, and the payment settles only after the call succeeds. A call that fails is never charged. An API key is never charged at all. Pay for answers, nothing else: hookline.trade/docs

Every fee, before you sign. A real Hookline quote, 0.5 ETH to USDG on Robinhood Chain. Open Details on the swap card and it is all there: Fee: 1.6894 USDG (0.15%) Network cost: <$0.01 Price impact: 0.03% Minimum received: 1,119.01 USDG The fee is taken in the token you buy and already counted in the 1,124.63 USDG you see. The minimum is written into the transaction: below it, the swap reverts. Hold 1,000,000 HOOKLINE and the fee line reads Free. hookline.trade/swap

No API key. Just pay per call. Any agent with a wallet can now use Hookline's best-price swap API on Robinhood Chain without signing up. Past the free limit, the API answers 402 Payment Required with the exact price: 0.01 USDG. 1. The agent reads the 402: amount, asset, network, recipient 2. It signs one USDG authorization (EIP-3009). No account, no transaction, no gas 3. It repeats the call and gets its quote or its swap, built and simulated Quotes, swap builds and the MCP tools get_quote and build_swap all work this way. API keys never pay, and a call that fails is never charged. Go build: hookline.trade/docs

Swap straight from ETH. No wrapping first. No approval. On Hookline, ETH is a first-class token: sell it or buy it, the card takes it as it is. A real quote: 0.1 ETH to 1,027.29 PONS. Hookline split it in two. 40% went through a Uniswap v4 pool that takes native ETH directly. The other 60% needed WETH, so the router wrapped exactly that share, inside the same transaction. You sign once. Any ETH a pool does not take comes straight back to you. hookline.trade/swap

Hookline, in one file. hookline.trade/llms.txt is 56 lines of plain text written for AI agents. Point Cursor, Claude or your own bot at it and in one read it knows: - the API base URL, the OpenAPI spec and the MCP server - the swap flow in 7 steps, from quote to Proof of Savings - the limits: 60 quotes and 240 reads a minute per IP, more with a free key - the safety rule: never sign unless tx.to is the Universal Router and the chain is 4663 No human docs to read. Your agent gets the best price on Robinhood Chain, your wallet signs. hookline.trade/docs

Bridge in. Swap out. Your ETH sits on Base, the token you want lives on Robinhood Chain. Hookline takes you from one to the other in two cards. 1. On the bridge, pick Base, Arbitrum, OP Mainnet or Ethereum and send ETH or USDC. A real quote: 0.05 ETH from Base, 0.04998 ETH on Robinhood Chain, minimum 0.04948 ETH, bridge cost about $0.04, Hookline fee none. 2. On the swap card, sell what arrived. Those 0.04998 ETH: 513.25 PONS, best of 70 routes. Your wallet signs both. Hookline never holds your funds. hookline.trade/bridge

The pools keep coming. October 22, Hookline's launch: 102 pools behind Uniswap Aggregator Hooks on Robinhood Chain, about $7.4M of outside liquidity. October 23: 124 pools, $10.6M. November 2: 128 pools, over $11.6M, wrapped and reachable from Uniswap. That growth is fresh depth for your trades. When a new pool lands on a verified hook and its tokens are listed, Hookline picks it up on its next refresh, within minutes. No integration, no request, no waiting. From then on it competes with every native Uniswap pool for your order, and the best price wins. More liquidity in, better fills out: hookline.trade/hooks

Every hook swap feeds the UNI burn. Each swap through a Uniswap Aggregator Hook on Robinhood Chain pays a Uniswap protocol fee: 0.10% on all 126 hook pools. The hook sends it, in the same transaction, to Uniswap's token jar, the one that feeds the UNI burn. Since Hookline launched, $209.48 has gone that way. In the last 24 hours alone: 125 hook swaps and $31K of volume, over $12.2M of outside liquidity. Hookline routes those pools next to every native Uniswap pool. Better prices for you, fees for Uniswap. hookline.trade/hooks

Limit orders for Robinhood Chain tokens. PONS, DELTA, HMM and INJOH each have their own Hookline limit market against ETH, on the token's Uniswap v3 pool. Right next to ETH and WETH against USDG on Uniswap v4. Pick the pair, choose Buy or Sell, type your price, sign once. Your order becomes a Uniswap position held by your own wallet, and any trade that crosses your price fills it, day or night. No Hookline fee. No keeper. No custody. Real entries and real exits on the tokens you believe in: hookline.trade/swap

Priced in about a second. We timed five real Hookline quotes on Robinhood Chain: 0.1 ETH to PONS: 1.02 s, 70 routes 250 USDG to ETH: 0.58 s, 10 routes 0.5 ETH to CASHCAT: 0.79 s, 35 routes 500 USDG to PONS: 1.06 s, 96 routes 100 USDG to DELTA: 0.78 s, 21 routes 232 routes checked at the exact size, every quote back in under 1.1 seconds. Then the card prices it again every 15 seconds, and each quote lives 60 seconds. You trade on a fresh price, not an old one. hookline.trade/swap

A floor in every swap. A real Hookline quote: 2 ETH for 4,668.78 USDG after our fee. With the default 0.5% slippage, the minimum received is 4,645.44 USDG. That number is not a promise on a screen. It is written into the transaction itself: the last step of Uniswap's Universal Router pays you only if at least 4,645.44 USDG is left for you. Below that, the whole swap reverts and your ETH stays in your wallet. Prices can move between your click and the block. Your floor does not. hookline.trade/swap

One card. Every mode. Swap, Limit and Private sit side by side on Hookline's swap card. One tap moves you between them: same card, same wallet, no new app to learn. Swap: 0.5 ETH to 4,402.61 PONS, routed across every Uniswap v3, v4 and Aggregator Hook pool, 1.5585 PONS more than Uniswap pools alone. Limit: sell at your price, about 2% above the market, as your own Uniswap position. Private: the same swap, delivered to a fresh wallet. And one tap on the network switches Swap between Robinhood Chain, Base and Ethereum. hookline.trade/swap

Ranked after gas. A real Hookline quote on Ethereum: 25 USDT to ETH. Hookline checked 78 routes over 25 pools. Four of them paid more ETH on paper. Hookline took the fifth: USDT straight to ETH in one Uniswap v4 pool, 0.01063038 ETH after our fee, for 42,273 gas. Why? The top route on paper paid 0.00000219 ETH more, and its second pool cost more than that in extra gas. Every route is scored on what it leaves you once gas is paid. Not on what it shows. hookline.trade/swap

Warned before you sign. Big orders deserve straight talk. Hookline gives it to you before a single signature. A real quote on Robinhood Chain: 945,000 PONS to ETH, close to $250,000. Hookline found the best route, 0.8521 ETH more than Uniswap pools alone, then flagged the size: "High price impact: about 3.1%." The swap stays locked until you tick a box accepting a 3.11% move. Over 3% impact, you confirm first. Over 20%, Hookline refuses the order. Clear words before the trade, not a bad surprise after it. hookline.trade/swap

Four chains in. No Hookline fee. A real bridge quote on Hookline: 0.05 ETH from Base, 0.04998 ETH on Robinhood Chain. Minimum 0.04948 ETH. Bridge cost about $0.04. Hookline fee: none. That is everything you see before you sign, on Ethereum, Base, Arbitrum and OP Mainnet alike. Relay delivers, your wallet signs, and your funds never sit with Hookline. ETH arrives as ETH, USDC arrives as USDG, ready to swap at the best price. Bring your ETH or USDC over and start trading: hookline.trade/bridge

MAJOR UPDATE: Bridge to Robinhood Chain, right inside Hookline. With no Hookline fee. Bring ETH or USDC from Ethereum, Base, Arbitrum or OP Mainnet, and it lands on Robinhood Chain as ETH or USDG. Then swap it at the best price across every Uniswap and Aggregator Hook pool, on the same site. You see what arrives, the minimum and the bridge cost before you sign. Your wallet signs, Relay delivers. And taking funds back out works the same way. Every transaction is checked against your request before it reaches your wallet. Four chains in. One card. hookline.trade/bridge

Your token. Your buy button. Token teams on Robinhood Chain: put a buy button for your token on your own site, routed at the best price across every Uniswap and Aggregator Hook pool. One script tag:  data-buy picks your token, data-lock="buy" keeps it fixed, data-widget attaches your fee. In this example widget, 0.05 ETH buys 444.1806 PONS, and 0.30% (1.3365 PONS) goes to the site, paid on-chain in the same transaction. PONS here, your token there. hookline.trade/build

Signed for this swap. Nothing more. Here is a real Permit2 request from Hookline, for a 250 USDG sale on Robinhood Chain: Token: USDG  Amount: 250 USDG, exactly the sale Expires: in 30 minutes Spender: Uniswap's Universal Router You approve Permit2 once per token. After that, every swap asks for a fresh signature like this one, sized to that trade and gone in half an hour. No open-ended allowance for the router sitting on your tokens. And your browser checks it before your wallet opens: more than 110% of the sale, or more than 2 hours, and Hookline refuses to send it. Sell any token with tight permissions: hookline.trade/swap