Update node-providers.md

ethereum-optimism · Jan 20, 2024 · 3ea39bf · 3ea39bf
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diff --git a/community/tools/node-providers.md b/community/tools/node-providers.md
@@ -135,3 +135,14 @@ The URL format is `https://optimism.nownodes.io/?API_key=<API key from NOWNodes`
 
 *   OP Mainnet
 
+## Stackup
+
+### Description and Pricing
+
+[Stackup](https://www.stackup.sh/) provides ERC-4337 account abstraction infrastructure, including nodes, on EVM-compatible blockchains.
+
+### Supported Networks
+
+*   OP Mainnet
+*   OP Sepolia
+