diff --git a/contracts/v1/moderation-action-request.json b/contracts/v1/moderation-action-request.json
new file mode 100644
index 0000000..965d8f9
--- /dev/null
+++ b/contracts/v1/moderation-action-request.json
@@ -0,0 +1,15 @@
+{
+  "$schema": "https://json-schema.org/draft/2020-12/schema",
+  "$id": "https://trixie.reaperofveriod.nl/contracts/v1/moderation-action-request.json",
+  "title": "Twitch moderation action",
+  "type": "object",
+  "additionalProperties": false,
+  "required": ["action", "user_id"],
+  "properties": {
+    "action": { "enum": ["ban", "timeout", "unban", "delete_message"] },
+    "user_id": { "type": "string", "minLength": 1, "maxLength": 64 },
+    "duration_seconds": { "type": "integer", "minimum": 1, "maximum": 1209600 },
+    "reason": { "type": "string", "maxLength": 500 },
+    "message_id": { "type": "string", "maxLength": 128 }
+  }
+}
diff --git a/contracts/v1/moderation-action-response.json b/contracts/v1/moderation-action-response.json
new file mode 100644
index 0000000..848791b
--- /dev/null
+++ b/contracts/v1/moderation-action-response.json
@@ -0,0 +1,12 @@
+{
+  "$schema": "https://json-schema.org/draft/2020-12/schema",
+  "$id": "https://trixie.reaperofveriod.nl/contracts/v1/moderation-action-response.json",
+  "title": "Twitch moderation action response",
+  "type": "object",
+  "additionalProperties": false,
+  "required": ["action", "applied"],
+  "properties": {
+    "action": { "type": "string" },
+    "applied": { "const": true }
+  }
+}
diff --git a/fixtures/v1/moderation-action.response.json b/fixtures/v1/moderation-action.response.json
new file mode 100644
index 0000000..e365041
--- /dev/null
+++ b/fixtures/v1/moderation-action.response.json
@@ -0,0 +1,4 @@
+{
+  "action": "timeout",
+  "applied": true
+}