1 files changed, 20 insertions, 0 deletions
diff --git a/packages/json-schemas/schemas/subscription_opts_schema.ts b/packages/json-schemas/schemas/subscription_opts_schema.ts
new file mode 100644
index 000000000..a476e6963
--- /dev/null
+++ b/packages/json-schemas/schemas/subscription_opts_schema.ts
@@ -0,0 +1,20 @@
+export const blockParamSchema = {
+    id: '/BlockParam',
+    oneOf: [
+        {
+            type: 'number',
+        },
+        {
+            enum: ['latest', 'earliest', 'pending'],
+        },
+    ],
+};
+
+export const subscriptionOptsSchema = {
+    id: '/SubscriptionOpts',
+    properties: {
+        fromBlock: {$ref: '/BlockParam'},
+        toBlock: {$ref: '/BlockParam'},
+    },
+    type: 'object',
+};