Updated from Slack docs, 2026/04/17

Author: Slack API Ref Buildbot

docs.slack.dev/methods/apps.icon.set.json

@@ -0,0 +1,84 @@
+{
+  "desc": "Sets the app icon",
+  "http_method": "POST",
+  "scope": {
+    "user": [
+      "app_configurations:write"
+    ]
+  },
+  "rate_limits": "t1",
+  "json_input_supported": true,
+  "args": {
+    "type": "object",
+    "required": [
+      "token",
+      "app_id"
+    ],
+    "properties": {
+      "token": {
+        "desc": "Authentication token bearing required scopes. Tokens should be passed as an HTTP Authorization header or alternatively, as a POST parameter.",
+        "type": "string",
+        "subtype": "auth",
+        "example": "xxxx-xxxxxxxxx-xxxx"
+      },
+      "app_id": {
+        "desc": "The ID of the app whose icon you want to set.",
+        "schema": "app_id"
+      },
+      "file": {
+        "desc": "File contents via `multipart/form-data`",
+        "schema": "post_file",
+        "is_resource": false
+      },
+      "url": {
+        "desc": "URL of a publicly hosted image",
+        "type": "string",
+        "maxLength": 3000
+      }
+    }
+  },
+  "output": null,
+  "errors": {
+    "error_bad_format": {
+      "desc": "Icon must be a valid image file."
+    },
+    "invalid_app": {
+      "desc": "App does not exist."
+    },
+    "invalid_app_id": {
+      "desc": "App ID is not valid."
+    },
+    "invalid_icon_size": {
+      "desc": "Icon dimensions must be between 512x512px and 2000x2000px."
+    },
+    "invalid_parameters": {
+      "desc": "Only one of `URL` or `file` can be defined."
+    },
+    "missing_arguments": {
+      "desc": "One of `URL` or `file` must be provided."
+    },
+    "no_permission": {
+      "desc": "User does not have required permissions for app."
+    },
+    "unable_to_open_file": {
+      "desc": "Error with file upload."
+    }
+  },
+  "examples": {
+    "success": {
+      "url": "/api/apps.icon.set",
+      "description": "Typical success response",
+      "example": {
+        "ok": true
+      }
+    },
+    "error": {
+      "url": "/api/apps.icon.set",
+      "description": "Typical error response if invalid icon size",
+      "example": {
+        "ok": false,
+        "error": "invalid_icon_size"
+      }
+    }
+  }
+}

docs.slack.dev/methods/apps.manifest.create.json

@@ -24,6 +24,11 @@
       "manifest": {
         "type": "string",
         "desc": "A JSON app manifest encoded as a string. This manifest **must** use a valid [app manifest schema - read our guide to creating one](/app-manifests/configuring-apps-with-app-manifests#fields)."
+      },
+      "team_id": {
+        "schema": "workspace_id",
+        "type": "string",
+        "desc": "When called with an org token, which specific team to create app on"
       }
     }
   },

docs.slack.dev/methods/methods.json

@@ -846,6 +846,13 @@
       "apps"
     ]
   },
+  {
+    "name": "apps.icon.set",
+    "description": "Sets the app icon",
+    "family": [
+      "apps"
+    ]
+  },
   {
     "name": "apps.manifest.create",
     "description": "Create an app from an app manifest.",

methods/apps/apps.icon.set.json

@@ -0,0 +1,65 @@
+{
+  "group": "apps",
+  "name": "apps.icon.set",
+  "deprecated": false,
+  "desc": "Sets the app icon",
+  "args": {
+    "app_id": {
+      "required": true,
+      "desc": "The ID of the app whose icon you want to set."
+    },
+    "file": {
+      "required": false,
+      "desc": "File contents via multipart/form-data.",
+      "type": "file"
+    },
+    "url": {
+      "required": false,
+      "desc": "URL of a publicly hosted image.",
+      "type": "string"
+    }
+  },
+  "response": {
+    "examples": [
+      "{\n    \"ok\": true\n}",
+      "{\n    \"ok\": false,\n    \"error\": \"invalid_icon_size\"\n}"
+    ]
+  },
+  "errors": {
+    "access_denied": "Access to a resource specified in the request is denied.",
+    "accesslimited": "Access to this method is limited on the current network.",
+    "account_inactive": "Authentication token is for a deleted user or workspace when using a bot token.",
+    "deprecated_endpoint": "The endpoint has been deprecated.",
+    "ekm_access_denied": "Administrators have suspended the ability to post a message.",
+    "enterprise_is_restricted": "The method cannot be called from an Enterprise.",
+    "error_bad_format": "Icon must be a valid image file.",
+    "fatal_error": "The server could not complete your operation(s) without encountering a catastrophic error. It's possible some aspect of the operation succeeded before the error was raised.",
+    "invalid_app": "App does not exist.",
+    "invalid_app_id": "App ID is not valid.",
+    "invalid_arg_name": "The method was passed an argument whose name falls outside the bounds of accepted or expected values. This includes very long names and names with non-alphanumeric characters other than _. If you get this error, it is typically an indication that you have made a very malformed API call.",
+    "invalid_array_arg": "The method was passed an array as an argument. Please only input valid strings.",
+    "invalid_charset": "The method was called via a POST request, but the charset specified in the Content-Type header was invalid. Valid charset names are: utf-8 iso-8859-1.",
+    "invalid_form_data": "The method was called via a POST request with Content-Type application/x-www-form-urlencoded or multipart/form-data, but the form data was either missing or syntactically invalid.",
+    "invalid_icon_size": "Icon dimensions must be between 512x512px and 2000x2000px.",
+    "invalid_parameters": "Only one of `URL` or `file` can be defined.",
+    "invalid_post_type": "The method was called via a POST request, but the specified Content-Type was invalid. Valid types are: application/json application/x-www-form-urlencoded multipart/form-data text/plain.",
+    "is_bot": "This method cannot be called by a legacy bot.",
+    "method_deprecated": "The method has been deprecated.",
+    "missing_arguments": "One of `URL` or `file` must be provided.",
+    "missing_post_type": "The method was called via a POST request and included a data payload, but the request did not include a Content-Type header.",
+    "missing_scope": "The token used is not granted the specific scope permissions required to complete this request.",
+    "no_permission": "User does not have required permissions for app.",
+    "not_allowed_token_type": "The token type used in this request is not allowed.",
+    "not_authed": "No authentication token provided.",
+    "org_login_required": "The workspace is undergoing an enterprise migration and will not be available until migration is complete.",
+    "ratelimited": "The request has been ratelimited. Refer to the Retry-After header for when to retry the request.",
+    "request_timeout": "The method was called via a POST request, but the POST data was either missing or truncated.",
+    "service_unavailable": "The service is temporarily unavailable.",
+    "team_added_to_org": "The workspace associated with your request is currently undergoing migration to an Enterprise Organization. Web API and other platform operations will be intermittently unavailable until the transition is complete.",
+    "token_expired": "Authentication token has expired.",
+    "token_revoked": "Authentication token is for a deleted user or workspace or the app has been removed when using a user token.",
+    "two_factor_setup_required": "Two factor setup is required.",
+    "unable_to_open_file": "Error with file upload.",
+    "unknown_method": "This method is currently not available."
+  }
+}

methods/apps/apps.manifest.create.json

@@ -9,6 +9,11 @@
       "desc": "A JSON app manifest encoded as a string. This manifest must use a valid app manifest schema - read our guide to creating one.",
       "type": "string",
       "format": "json"
+    },
+    "team_id": {
+      "required": false,
+      "desc": "When called with an org token, which specific team to create app on.",
+      "type": "string"
     }
   },
   "response": {