diff --git a/pyth-rng/config.yaml b/pyth-rng/config.yaml
new file mode 100644
index 000000000..e6d6ddfd6
--- /dev/null
+++ b/pyth-rng/config.yaml
@@ -0,0 +1,4 @@
+chains:
+  - chain_id: "optimism-goerli"
+    geth_rpc_addr: https://goerli.optimism.io
+    contract_addr: 0x28F16Af4D87523910b843a801454AEde5F9B0459
diff --git a/pyth-rng/src/api/chain_ids.rs b/pyth-rng/src/api/chain_ids.rs
new file mode 100644
index 000000000..f29e1eda3
--- /dev/null
+++ b/pyth-rng/src/api/chain_ids.rs
@@ -0,0 +1,26 @@
+use {
+    crate::api::{
+        ChainId,
+        RestError,
+    },
+    anyhow::Result,
+    axum::{
+        extract::State,
+        Json,
+    },
+};
+
+/// Get the list of supported chain ids
+#[utoipa::path(
+get,
+path = "/v1/chains",
+responses(
+(status = 200, description = "Successfully retrieved the list of chain ids", body = GetRandomValueResponse),
+)
+)]
+pub async fn chain_ids(
+    State(state): State<crate::api::ApiState>,
+) -> Result<Json<Vec<ChainId>>, RestError> {
+    let chain_ids = state.chains.iter().map(|(id, _)| id.clone()).collect();
+    Ok(Json(chain_ids))
+}