diff --git a/examples/with-foundry/.env.example b/examples/with-foundry/.env.example
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+++ b/examples/with-foundry/.env.example
@@ -0,0 +1,5 @@
+# Base RPC URL used for fetching blockchain data. Alchemy is recommended.
+PONDER_RPC_URL_8453=https://base-mainnet.g.alchemy.com/v2/...
+
+# (Optional) Postgres database URL. If not provided, SQLite will be used. 
+DATABASE_URL=
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