diff --git a/fern/openapi.json b/fern/openapi.json
index 0146c537..25bff2dc 100644
--- a/fern/openapi.json
+++ b/fern/openapi.json
@@ -22308,6 +22308,9 @@
                     "items": {
                       "type": "string"
                     }
+                  },
+                  "prompt_template": {
+                    "type": "string"
                   }
                 },
                 "required": [
@@ -23087,6 +23090,134 @@
           }
         }
       }
+    },
+    "/v1/pipelines/preview": {
+      "post": {
+        "description": "Fetch sample messages from integration to preview what agents will receive",
+        "summary": "Preview Pipeline",
+        "tags": ["pipelines"],
+        "parameters": [],
+        "operationId": "pipelines.previewPipeline",
+        "requestBody": {
+          "description": "Body",
+          "content": {
+            "application/json": {
+              "schema": {
+                "type": "object",
+                "properties": {
+                  "integration_type": {
+                    "type": "string",
+                    "enum": ["slack"]
+                  },
+                  "integration_id": {
+                    "type": "string"
+                  },
+                  "producer_config": {
+                    "discriminator": {
+                      "propertyName": "type"
+                    },
+                    "oneOf": [
+                      {
+                        "type": "object",
+                        "properties": {
+                          "type": {
+                            "type": "string",
+                            "enum": ["slack_channel_reader"]
+                          },
+                          "data": {
+                            "type": "object",
+                            "properties": {
+                              "channels": {
+                                "type": "array",
+                                "items": {
+                                  "type": "object",
+                                  "properties": {
+                                    "channel_id": {
+                                      "type": "string"
+                                    },
+                                    "channel_name": {
+                                      "type": "string"
+                                    },
+                                    "last_message_ts": {
+                                      "type": "string"
+                                    }
+                                  },
+                                  "required": ["channel_id"]
+                                },
+                                "minItems": 1,
+                                "maxItems": 100
+                              },
+                              "max_messages_per_poll": {
+                                "default": 100,
+                                "type": "number"
+                              }
+                            },
+                            "required": ["channels"]
+                          }
+                        },
+                        "required": ["type", "data"]
+                      }
+                    ]
+                  }
+                },
+                "required": [
+                  "integration_type",
+                  "integration_id",
+                  "producer_config"
+                ]
+              }
+            }
+          }
+        },
+        "responses": {
+          "200": {
+            "description": "200",
+            "content": {
+              "application/json": {
+                "schema": {
+                  "type": "object",
+                  "properties": {
+                    "sampleMessages": {
+                      "type": "array",
+                      "items": {
+                        "type": "string"
+                      }
+                    },
+                    "messageCount": {
+                      "type": "number"
+                    }
+                  },
+                  "required": ["sampleMessages", "messageCount"]
+                }
+              }
+            }
+          },
+          "400": {
+            "description": "400",
+            "content": {
+              "application/json": {
+                "schema": {
+                  "type": "object",
+                  "properties": {
+                    "message": {
+                      "type": "string"
+                    },
+                    "errorCode": {
+                      "type": "string",
+                      "enum": [
+                        "integrationNotFound",
+                        "invalidProducerConfig",
+                        "tokenExpired"
+                      ]
+                    }
+                  },
+                  "required": ["message"]
+                }
+              }
+            }
+          }
+        }
+      }
     }
   },
   "components": {