From 8fb21257e09fa5b727122fade5f266e90ba7459c Mon Sep 17 00:00:00 2001
From: mUniKeS <munikes@members.fsf.org>
Date: Wed, 18 Mar 2026 10:49:29 +0100
Subject: [PATCH] Add Celo blockchain support

Add Celo (chain ID 42220) as a supported EVM blockchain:
- Add 'celo' to supported blockchains list
- Add Uniswap V3 exchange config for Celo with official contract addresses
- Add wcelo wrapped token exchange (CELO/WCELO swap)
- Add Celo exchange routing (Uniswap V3 + WCELO)
---
 src/blockchains.js          |  8 ++++----
 src/exchanges.js            | 16 ++++++++++++++++
 src/exchanges/uniswap_v3.js | 24 +++++++++++++++++++++++-
 src/exchanges/wcelo.js      | 37 +++++++++++++++++++++++++++++++++++++
 4 files changed, 80 insertions(+), 5 deletions(-)
 create mode 100644 src/exchanges/wcelo.js

diff --git a/src/blockchains.js b/src/blockchains.js
index 2b50a0c..91235b4 100644
--- a/src/blockchains.js
+++ b/src/blockchains.js
@@ -1,7 +1,7 @@
 /*#if _EVM
 
-let supported = ['ethereum', 'bsc', 'polygon', 'fantom', 'arbitrum', 'avalanche', 'gnosis', 'optimism', 'base', 'worldchain']
-supported.evm = ['ethereum', 'bsc', 'polygon', 'fantom', 'arbitrum', 'avalanche', 'gnosis', 'optimism', 'base', 'worldchain']
+let supported = ['ethereum', 'bsc', 'polygon', 'fantom', 'arbitrum', 'avalanche', 'gnosis', 'optimism', 'base', 'worldchain', 'celo']
+supported.evm = ['ethereum', 'bsc', 'polygon', 'fantom', 'arbitrum', 'avalanche', 'gnosis', 'optimism', 'base', 'worldchain', 'celo']
 supported.svm = []
 
 /*#elif _SVM
@@ -12,8 +12,8 @@ supported.svm = ['solana']
 
 //#else */
 
-let supported = ['ethereum', 'bsc', 'polygon', 'solana', 'fantom', 'arbitrum', 'avalanche', 'gnosis', 'optimism', 'base', 'worldchain']
-supported.evm = ['ethereum', 'bsc', 'polygon', 'fantom', 'arbitrum', 'avalanche', 'gnosis', 'optimism', 'base', 'worldchain']
+let supported = ['ethereum', 'bsc', 'polygon', 'solana', 'fantom', 'arbitrum', 'avalanche', 'gnosis', 'optimism', 'base', 'worldchain', 'celo']
+supported.evm = ['ethereum', 'bsc', 'polygon', 'fantom', 'arbitrum', 'avalanche', 'gnosis', 'optimism', 'base', 'worldchain', 'celo']
 supported.svm = ['solana']
 
 //#endif
diff --git a/src/exchanges.js b/src/exchanges.js
index 2092a02..85e1e0d 100644
--- a/src/exchanges.js
+++ b/src/exchanges.js
@@ -9,6 +9,7 @@ import uniswap_v2 from './exchanges/uniswap_v2'
 import uniswap_v3 from './exchanges/uniswap_v3'
 import wavax from './exchanges/wavax'
 import wbnb from './exchanges/wbnb'
+import wcelo from './exchanges/wcelo'
 import weth from './exchanges/weth'
 import weth_arbitrum from './exchanges/weth_arbitrum'
 import weth_base from './exchanges/weth_base'
@@ -34,6 +35,7 @@ const exchanges = [
   wftm(),
   wavax(),
   wxdai(),
+  wcelo(),
 ]
 
 exchanges.forEach((exchange)=>{
@@ -105,6 +107,12 @@ exchanges.worldchain = [
 ]
 exchanges.worldchain.forEach((exchange)=>{ exchanges.worldchain[exchange.name] = exchange })
 
+exchanges.celo = [
+  uniswap_v3('celo'),
+  wcelo('celo'),
+]
+exchanges.celo.forEach((exchange)=>{ exchanges.celo[exchange.name] = exchange })
+
 
 /*#elif _SVM
 
@@ -148,6 +156,7 @@ import weth_optimism from './exchanges/weth_optimism'
 import weth_base from './exchanges/weth_base'
 import wftm from './exchanges/wftm'
 import wmatic from './exchanges/wmatic'
+import wcelo from './exchanges/wcelo'
 import wxdai from './exchanges/wxdai'
 
 const exchanges = [
@@ -170,6 +179,7 @@ const exchanges = [
   wftm(),
   wavax(),
   wxdai(),
+  wcelo(),
 ]
 exchanges.forEach((exchange)=>{
   exchanges[exchange.name] = exchange
@@ -247,6 +257,12 @@ exchanges.worldchain = [
 ]
 exchanges.worldchain.forEach((exchange)=>{ exchanges.worldchain[exchange.name] = exchange })
 
+exchanges.celo = [
+  uniswap_v3('celo'),
+  wcelo('celo'),
+]
+exchanges.celo.forEach((exchange)=>{ exchanges.celo[exchange.name] = exchange })
+
 //#endif
 
 export default exchanges
diff --git a/src/exchanges/uniswap_v3.js b/src/exchanges/uniswap_v3.js
index a1ae8f6..d556b50 100644
--- a/src/exchanges/uniswap_v3.js
+++ b/src/exchanges/uniswap_v3.js
@@ -11,7 +11,7 @@ const exchange = {
   slippage: true,
   fees: [100, 500, 3000, 10000],
   
-  blockchains: ['ethereum', 'bsc', 'polygon', 'optimism', 'arbitrum', 'base', 'avalanche', 'worldchain', 'gnosis'],
+  blockchains: ['ethereum', 'bsc', 'polygon', 'optimism', 'arbitrum', 'base', 'avalanche', 'worldchain', 'gnosis', 'celo'],
   
   ethereum: {
     router: {
@@ -211,6 +211,28 @@ const exchange = {
     }
   },
 
+  celo: {
+    router: {
+      address: '0x5615CDAb10dc425a742d643d949a7F474C01abc4',
+      api: UniswapV3.ROUTER
+    },
+    factory: {
+      address: '0xAfE208a311B21f13EF87E33A90049fC17A7acDEc',
+      api: UniswapV3.FACTORY
+    },
+    pool: {
+      api: UniswapV3.POOL
+    },
+    quoter: {
+      address: '0x82825d0554fA07f7FC52Ab63c961F330fdEFa8E8',
+      api: UniswapV3.QUOTER
+    },
+    permit: {
+      address: '0x000000000022D473030F116dDEE9F6B43aC78BA3',
+      api: UniswapV3.PERMIT2
+    }
+  },
+
 }
 
 export default (scope)=>{
diff --git a/src/exchanges/wcelo.js b/src/exchanges/wcelo.js
new file mode 100644
index 0000000..c2094df
--- /dev/null
+++ b/src/exchanges/wcelo.js
@@ -0,0 +1,37 @@
+import Blockchains from '@depay/web3-blockchains'
+import Exchange from '../classes/Exchange'
+import WETH from '../platforms/evm/weth'
+
+const exchange = {
+
+  name: 'wcelo',
+  label: 'Wrapped Celo',
+  logo: Blockchains.celo.wrapped.logo,
+  protocol: 'weth',
+
+  slippage: false,
+
+  blockchains: ['celo'],
+
+  celo: {
+    router: {
+      address: Blockchains.celo.wrapped.address,
+      api: WETH.WETH
+    },
+  }
+}
+
+export default (scope)=>{
+
+  return new Exchange(
+
+    Object.assign(exchange, {
+      scope,
+      findPath: (args)=>WETH.findPath({ ...args, exchange }),
+      pathExists: (args)=>WETH.pathExists({ ...args, exchange }),
+      getAmounts: (args)=>WETH.getAmounts({ ...args, exchange }),
+      getPrep: (args)=>{},
+      getTransaction: (args)=>WETH.getTransaction({ ...args, exchange }),
+    })
+  )
+}