> For the complete documentation index, see [llms.txt](https://stonkmarket.gitbook.io/docs/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://stonkmarket.gitbook.io/docs/guides/trading.md).

# Trading

In v2 there is **no trading router**. Every token is a live **Uniswap v4** pool from launch, and trading is ordinary v4 swapping against that pool. The easiest path is [the website](/docs/guides/trading-ui.md); this page covers trading directly on-chain.

## Before You Trade

1. Confirm the market is open — a swap reverts outside NYSE hours (enforced by the [StonkHook](/docs/smart-contracts/stonk-hook.md)'s `beforeSwap`) and before the token's `launchTime`.
2. Set an appropriate minimum-out for slippage and a deadline.

There is no graduation and no separate curve contract to check — the pool is real from the first bell (see [No Graduation](/docs/concepts/graduation.md)).

## How Swaps Work

Each token's pool is a standard Uniswap v4 pool identified by its `PoolKey`:

* `currency0` / `currency1` — the token and its backing asset, ordered by address.
* `fee` — **0** (the native LP fee is zeroed; the hook charges the protocol fee instead).
* `tickSpacing` — **60**.
* `hooks` — the StonkHook for that chain.

A swap goes through that chain's Uniswap v4 **PoolManager**, typically via the **Universal Router**. The hook runs on every swap: it blocks the trade if the market is closed, and it withholds **1%** from the backing-asset leg (never from the token itself).

| Network                | StonkHook                                                                                                                                | PoolManager                                                                                                                              |
| ---------------------- | ---------------------------------------------------------------------------------------------------------------------------------------- | ---------------------------------------------------------------------------------------------------------------------------------------- |
| Base (8453)            | [`0x702b1FE403Ec993a102addE47f2ab52eb2eadAcc`](https://basescan.org/address/0x702b1FE403Ec993a102addE47f2ab52eb2eadAcc)                  | [`0x498581fF718922c3f8e6A244956aF099B2652b2b`](https://basescan.org/address/0x498581fF718922c3f8e6A244956aF099B2652b2b)                  |
| Robinhood Chain (4663) | [`0x3f7b2634AeE7173Ed0F5328CeB8a2134F8B95ACc`](https://robinhoodchain.blockscout.com/address/0x3f7b2634AeE7173Ed0F5328CeB8a2134F8B95ACc) | [`0x8366a39CC670B4001A1121B8F6A443A643e40951`](https://robinhoodchain.blockscout.com/address/0x8366a39CC670B4001A1121B8F6A443A643e40951) |

## On Robinhood Chain, the Universal Router Takes an Extra Field

Robinhood Chain runs a **feature-extended build** of the Universal Router — an official Uniswap deployment, but not the same binary as Base and most other chains. Its v4 swap params carry an extra per-hop price guard:

```solidity
struct ExactInputSingleParams {
    PoolKey  poolKey;
    bool     zeroForOne;
    uint128  amountIn;
    uint128  amountOutMinimum;
    uint256  minHopPriceX36;   // <-- not present in the stock router
    bytes    hookData;
}
```

If you encode the stock shape, the router misreads the `hookData` offset in assembly and reverts **with empty returndata** — no selector, no reason string. And because the chain's V4Quoter *is* stock, sharing one encoder between quoting and trading will quote correctly and then fail every swap.

Pass `minHopPriceX36 = 0` to get exactly stock behaviour; the guard is only applied when the field is non-zero. Detect the variant per chain rather than special-casing Robinhood — other chains ship their own router builds. See [Robinhood Chain](/docs/reference/robinhood-chain.md).

Nothing about the pool, the hook, or the trading rules differs — this is purely a calldata-encoding concern.

## The Fee

The 1% is taken from the backing-asset side of your swap by the hook — a buy costs 1% more asset, a sell returns 1% less asset. It accrues in the [StonkFeeLocker](/docs/smart-contracts/stonk-fee-locker.md), split creator / platform referrer / treasury. There is no fee denominated in the launched token.

## Third-Party Routing Caveat

Because the pool uses a **custom hook**, general-purpose front-ends and aggregators — the Uniswap interface, 0x, the Base app — will only route it once the hook has been **allowlisted** on their side. Those submissions are in progress.

Until then, a **direct Universal Router swap** built from the pool's `PoolKey` works today for anyone — it does not depend on any aggregator allowlist. The website already trades this way, so swapping through [stonk.market](https://www.stonk.market/) works regardless of aggregator status.

## Slippage and Deadline

Always pass a minimum-output amount so a swap reverts rather than filling at a bad price if the market moves, and a deadline so a stale transaction can't execute later at an unexpected price. Quote the expected output first (for example, via the v4 Quoter) and set your minimum a small percentage below it.

## Market Hours Always Apply

Swaps and plain transfers are both gated to NYSE hours — the hook gates swaps, the token gates transfers. Outside 9:30 AM – 4:00 PM ET on a trading day, nothing moves. See [Market Hours](/docs/concepts/market-hours.md).


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