diff --git a/lib/facts/blob-service.js b/lib/facts/blob-service.js
--- a/lib/facts/blob-service.js
+++ b/lib/facts/blob-service.js
@@ -2,16 +2,21 @@
 
 import { isDev } from '../utils/dev-utils.js';
 
-type BlobServicePath = '/blob/:blobHash' | '/blob' | '/holders';
-
-export type BlobServiceHTTPEndpoint = {
-  +path: BlobServicePath,
-  +method: 'GET' | 'POST' | 'PUT' | 'DELETE',
+type BlobHTTPEndpoints = {
+  GET_BLOB: { +path: '/blob/:blobHash', +method: 'GET' },
+  ASSIGN_HOLDER: { +path: '/blob', +method: 'POST' },
+  ASSIGN_MULTIPLE_HOLDERS: { +path: '/holders', +method: 'POST' },
+  UPLOAD_BLOB: { +path: '/blob', +method: 'PUT' },
+  DELETE_BLOB: { +path: '/blob', +method: 'DELETE' },
+  REMOVE_MULTIPLE_HOLDERS: { +path: '/holders', +method: 'DELETE' },
 };
 
+export type BlobServiceHTTPEndpoint =
+  BlobHTTPEndpoints[$Keys<BlobHTTPEndpoints>];
+
 type BlobServiceConfig = {
   +url: string,
-  +httpEndpoints: { +[endpoint: string]: BlobServiceHTTPEndpoint },
+  +httpEndpoints: BlobHTTPEndpoints,
 };
 
 const httpEndpoints = Object.freeze({