uniswap-python · liquid-8 · Jul 28, 2026 · Jul 28, 2026 · Jul 28, 2026 · Jul 28, 2026
diff --git a/.github/workflows/docs.yml b/.github/workflows/docs.yml
@@ -12,14 +12,13 @@ jobs:
 
     steps:
     - uses: actions/checkout@v4
-    - name: Set up Python 3.8
+    - name: Set up Python 3.12
       uses: actions/setup-python@v5
       with:
-        python-version: '3.8'
+        python-version: '3.12'
     - name: Install dependencies
       run: |
         python -m pip install --upgrade pip poetry
-        poetry config installer.modern-installation false
         poetry install
     - name: Docs
       run: |

diff --git a/.github/workflows/test.yml b/.github/workflows/test.yml
@@ -40,12 +40,7 @@ jobs:
     - name: Set up Python
       uses: actions/setup-python@v5
       with:
-        python-version: '3.8'
-    - name: Set up Node
-      uses: actions/setup-node@v4
-      with:
-        node-version: '20'
-
+        python-version: '3.12'
     # Set up poetry cache, from https://github.com/python-poetry/poetry/blob/45a9b8f20384591d0a33ae876bcf23656f928ec0/.github/workflows/main.yml
     - name: Get full python version
       id: full-python-version
@@ -56,7 +51,6 @@ jobs:
       run: |
         python -m pip install --upgrade pip poetry
         poetry config virtualenvs.in-project true
-        poetry config installer.modern-installation false
 
     - name: Set up cache
       uses: actions/cache@v4
@@ -72,7 +66,9 @@ jobs:
     - name: Install dependencies
       run: |
         poetry install
-        npm install -g ganache@7.5.0
+
+    - name: Install Foundry
+      uses: foundry-rs/foundry-toolchain@v1
 
     - name: Install Foundry
       uses: foundry-rs/foundry-toolchain@v1
@@ -100,7 +96,7 @@ jobs:
     - name: Set up Python
       uses: actions/setup-python@v5
       with:
-        python-version: '3.8'
+        python-version: '3.12'
 
     # Set up poetry cache, from https://github.com/python-poetry/poetry/blob/45a9b8f20384591d0a33ae876bcf23656f928ec0/.github/workflows/main.yml
     - name: Get full python version
@@ -113,7 +109,6 @@ jobs:
       run: |
         python -m pip install --upgrade pip poetry
         poetry config virtualenvs.in-project true
-        poetry config installer.modern-installation false
 
     - name: Set up cache
       uses: actions/cache@v4

diff --git a/Makefile b/Makefile
@@ -7,10 +7,10 @@ typecheck:
 	poetry run mypy --pretty
 
 lint:
-	poetry run flake8
+	poetry run ruff check uniswap
 
 format:
-	black uniswap
+	poetry run ruff format uniswap
 
 format-abis:
 	npx prettier --write --parser=json uniswap/assets/*/*.abi

diff --git a/README.md b/README.md
@@ -20,8 +20,6 @@ The unofficial Python client for [Uniswap](https://uniswap.io/).
 
 Documentation is available at https://uniswap-python.com/
 
-**Want to help implement support for Uniswap v4?** See [issue #337](https://github.com/uniswap-python/uniswap-python/issues/337)
-
 ## Functionality
 
 *  A simple to use Python wrapper for all available contract functions and variables
@@ -30,6 +28,9 @@ Documentation is available at https://uniswap-python.com/
 
 ### Supports
 
+ - Uniswap v4 (as of v0.8.0, beta)
+    - Swaps, price quoting, liquidity management
+    - Pool discovery via pool cache service
  - Uniswap v3 (as of v0.5.0)
     - Including beta support for Arbitrum & Optimism deployments (as of v0.5.4)
  - Uniswap v2 (as of v0.4.0)
@@ -47,7 +48,13 @@ See our [Getting started guide](https://uniswap-python.com/getting-started.html)
 
 Unit tests are under development using the pytest framework. Contributions are welcome!
 
-Test are run on a fork of the main net using ganache-cli. You need to install it with `npm install -g ganache-cli` before running tests.
+Tests run on a fork of mainnet using [Anvil](https://getfoundry.sh) (part of Foundry). Install Foundry with:
+
+```sh
+curl -L https://foundry.paradigm.xyz | bash
+export PATH="$PATH:$HOME/.foundry/bin"
+foundryup
+```
 
 To run the full test suite, in the project directory set the `PROVIDER` env variable to a mainnet provider, and run:
 
@@ -59,9 +66,13 @@ make test
 poetry run pytest --capture=no  # doesn't capture output (verbose)
 ```
 
-## Support our continued work!
+## Funding
+
+Development of this library has been funded by:
 
-You can support us on [Gitcoin Grants](https://gitcoin.co/grants/2631/uniswap-python).
+* The **[Uniswap Grants Program](https://www.uniswapfoundation.org/grants)**, which awarded a $15k grant (2021) that funded the development of Uniswap v3 support.
+* **Community donations** through [Gitcoin Grants](https://gitcoin.co/grants/2631/uniswap-python), which were used to compensate contributors (see [#181](https://github.com/uniswap-python/uniswap-python/discussions/181)).
+* **[Superuser Labs](https://superuserlabs.org/)**, Erik's company, which has sponsored continued development and maintenance, including funding [@liquid-8](https://github.com/liquid-8)'s work on Uniswap v4 support.
 
 ## Authors
 
@@ -70,8 +81,6 @@ You can support us on [Gitcoin Grants](https://gitcoin.co/grants/2631/uniswap-py
 * [@liquid-8](https://github.com/liquid-8)
 * ...and [others](https://github.com/uniswap-python/uniswap-python/graphs/contributors)
 
-*Want to help out with development? We have funding to those that do! See [#181](https://github.com/uniswap-python/uniswap-python/discussions/181)*
-
 Contributors also earn this beautiful [GitPOAP](https://gitpoap.notion.site/What-s-a-GitPOAP-5b085daac4b4429994b5231be028b3d9) for their contributions!
 
 <a href="https://www.gitpoap.io/gh/uniswap-python/uniswap-python">
@@ -161,7 +170,7 @@ _A huge thank you [Erik Bjäreholt](https://github.com/ErikBjare) for adding Uni
 * Switched from setup.py to pyproject.toml/poetry
 * Switched from Travis to GitHub Actions
 * For CI to work in your repo, you need to set the secret MAINNET_PROVIDER. I use Infura.
-* Running tests on a local fork of mainnet using ganache-cli (started as a fixture)
+* Running tests on a local fork of mainnet using Anvil/Foundry (started as a fixture)
 * Fixed tests for make_trade and make_trade_output
 * Added type annotations to the entire codebase and check them with mypy in CI
 * Formatted entire codebase with black

diff --git a/docs/conf.py b/docs/conf.py
@@ -44,7 +44,7 @@
 exclude_patterns = ["_build", "Thumbs.db", ".DS_Store"]
 
 extlinks = {
-    "issue": ("https://github.com/shanefontaine/uniswap-python/issues/%s", "issue #"),
+    "issue": ("https://github.com/shanefontaine/uniswap-python/issues/%s", "issue #%s"),
 }
 
 

diff --git a/docs/examples.rst b/docs/examples.rst
@@ -1,6 +1,196 @@
 Examples
 ========
 
-No examples here yet! Why don't you contribute some?
+This page shows common usage patterns for Uniswap v2 and v3. For v4 examples,
+see the dedicated :doc:`v4` guide.
 
-In the meantime, see the :ref:`Getting started` guide.
+The code snippets here mirror the `test suite
+<https://github.com/uniswap-python/uniswap-python/tree/master/tests>`_, which
+runs every example against a live mainnet fork using
+`Anvil <https://book.getfoundry.sh/anvil/>`_.
+
+.. contents:: Table of contents
+    :local:
+    :depth: 2
+
+Uniswap v2
+----------
+
+Initialization
+``````````````
+
+.. code:: python
+
+    from uniswap import Uniswap
+
+    ETH = "0x0000000000000000000000000000000000000000"
+    USDC = "0xA0b86991c6218b36c1d19D4a2e9Eb0cE3606eB48"
+    DAI  = "0x6B175474E89094C44Da98b954EedeAC495271d0F"
+
+    uni = Uniswap(
+        address="0xYOUR_ADDRESS",
+        private_key="0xYOUR_PRIVATE_KEY",  # or None for read-only
+        version=2,
+        provider="https://mainnet.infura.io/v3/YOUR_PROJECT_ID",
+    )
+
+Getting prices
+``````````````
+
+.. code:: python
+
+    ONE_ETH = 10**18
+
+    # How much USDC do I get for 1 ETH?
+    usdc_out = uni.get_price_input(ETH, USDC, ONE_ETH)
+    print(f"1 ETH → {usdc_out / 10**6:.2f} USDC")
+
+    # How much ETH do I need to buy exactly 1000 USDC?
+    eth_needed = uni.get_price_output(ETH, USDC, 1000 * 10**6)
+    print(f"ETH needed for 1000 USDC: {eth_needed / ONE_ETH:.4f}")
+
+Making swaps
+````````````
+
+.. code:: python
+
+    # Sell 0.1 ETH, receive USDC (exact input)
+    tx = uni.make_trade(ETH, USDC, ONE_ETH // 10)
+
+    # Buy exactly 100 USDC, pay in ETH (exact output)
+    tx = uni.make_trade_output(ETH, USDC, 100 * 10**6)
+
+    # Sell ETH → DAI with a custom recipient
+    tx = uni.make_trade(ETH, DAI, ONE_ETH // 10, recipient="0xSOME_OTHER_ADDRESS")
+
+Multi-hop swaps
+```````````````
+
+For pairs without a direct v2 pool, route through an intermediate token:
+
+.. code:: python
+
+    WBTC = "0x2260FAC5E5542a773Aa44fBCfeDf7C193bc2C599"
+
+    # ETH → WBTC (routed automatically through WETH by the v2 router)
+    wbtc_out = uni.get_price_input(ETH, WBTC, ONE_ETH // 10)
+    tx = uni.make_trade(ETH, WBTC, ONE_ETH // 10)
+
+Uniswap v3
+----------
+
+v3 adds concentrated liquidity pools at multiple fee tiers. Always specify
+``fee`` to select the pool — the right tier depends on the pair's volatility.
+
+Initialization
+``````````````
+
+.. code:: python
+
+    from uniswap import Uniswap
+
+    ETH = "0x0000000000000000000000000000000000000000"
+    USDC = "0xA0b86991c6218b36c1d19D4a2e9Eb0cE3606eB48"
+    WBTC = "0x2260FAC5E5542a773Aa44fBCfeDf7C193bc2C599"
+    DAI  = "0x6B175474E89094C44Da98b954EedeAC495271d0F"
+
+    uni = Uniswap(
+        address="0xYOUR_ADDRESS",
+        private_key="0xYOUR_PRIVATE_KEY",
+        version=3,
+        provider="https://mainnet.infura.io/v3/YOUR_PROJECT_ID",
+    )
+
+Fee tiers
+`````````
+
+Common v3 fee tiers:
+
+- ``500`` — 0.05% (stablecoin pairs, e.g. USDC/USDT)
+- ``3000`` — 0.30% (most pairs, e.g. ETH/USDC)
+- ``10000`` — 1.00% (exotic/volatile pairs)
+
+Getting prices
+``````````````
+
+.. code:: python
+
+    ONE_ETH = 10**18
+
+    # Quote using the 0.30% ETH/USDC pool
+    usdc_out = uni.get_price_input(ETH, USDC, ONE_ETH, fee=3000)
+    print(f"1 ETH → {usdc_out / 10**6:.2f} USDC (0.30% pool)")
+
+    # Compare with the 0.05% pool (better rate for large trades)
+    usdc_out_low = uni.get_price_input(ETH, USDC, ONE_ETH, fee=500)
+    print(f"1 ETH → {usdc_out_low / 10**6:.2f} USDC (0.05% pool)")
+
+    # Exact output quote
+    eth_needed = uni.get_price_output(ETH, USDC, 1000 * 10**6, fee=500)
+
+Making swaps
+````````````
+
+.. code:: python
+
+    # Sell 0.1 ETH for USDC via the 0.05% pool
+    tx = uni.make_trade(ETH, USDC, ONE_ETH // 10, fee=500)
+
+    # Buy exactly 100 USDC, paying in ETH
+    tx = uni.make_trade_output(ETH, USDC, 100 * 10**6, fee=500)
+
+Multi-hop swaps
+```````````````
+
+The v3 client does not expose a multi-hop path parameter in ``make_trade``.
+For pairs without a direct pool, execute two single-hop trades in sequence.
+Wait for the first transaction and use the wallet's confirmed balance increase,
+not its quote, as the second hop's input:
+
+.. code:: python
+
+    DAI = "0x6B175474E89094C44Da98b954EedeAC495271d0F"
+
+    # ETH → USDC (first hop, 0.05% pool)
+    usdc_before = uni.get_token_balance(USDC)
+    tx1 = uni.make_trade(ETH, USDC, ONE_ETH // 10, fee=500)
+    uni.w3.eth.wait_for_transaction_receipt(tx1)
+    usdc_received = uni.get_token_balance(USDC) - usdc_before
+
+    # USDC → DAI (second hop, 0.01% stable pool)
+    tx2 = uni.make_trade(USDC, DAI, usdc_received, fee=100)
+
+Liquidity management (v3)
+`````````````````````````
+
+.. code:: python
+
+    from uniswap.util import default_tick_range
+
+    ETH = "0x0000000000000000000000000000000000000000"
+    USDC = "0xA0b86991c6218b36c1d19D4a2e9Eb0cE3606eB48"
+    ONE_ETH = 10**18
+
+    # Get the pool contract instance
+    pool = uni.get_pool_instance(ETH, USDC, fee=500)
+
+    # Sensible full-range tick bounds for this fee tier
+    tick_lower, tick_upper = default_tick_range(fee=500)
+
+    # Mint a liquidity position (returns TxReceipt)
+    receipt = uni.mint_liquidity(
+        pool,
+        amount0=ONE_ETH // 10,
+        amount1=340 * 10**6,
+        tick_lower=tick_lower,
+        tick_upper=tick_upper,
+        deadline=2**64,
+    )
+    assert receipt["status"]
+
+    # Get your token IDs (ERC-721 NFTs representing positions)
+    positions = uni.get_liquidity_positions()
+    token_id = positions[0]
+
+    # Close the position (collects fees + withdraws liquidity in one call)
+    receipt = uni.close_position(token_id, deadline=2**64)
diff --git a/docs/index.rst b/docs/index.rst
@@ -28,8 +28,9 @@ A good place to start is the :doc:`getting-started` guide.
    :caption: Contents:
 
    getting-started
+   v4
    api
-   cli 
+   cli
    examples
    supported-deployments