diff --git a/scripts/fresh.js b/scripts/fresh.js
index 32a4c02..2e5cea8 100644
--- a/scripts/fresh.js
+++ b/scripts/fresh.js
@@ -13,6 +13,9 @@ const args = parseArgs({
         registry: {
             type: "string",
         },
+        gypsum: {
+            type: "string",
+        },
         dir: {
             type: "string",
         }
@@ -21,7 +24,7 @@ const args = parseArgs({
 
 const dir = utils.required(args, "dir");
 const { db_paths, db_tokenizable } = utils.parseConfigurations(utils.required(args, "config"), dir);
-const { list_projects, list_assets, list_versions, find_latest, read_summary, read_metadata } = utils.chooseSourceFunctions(utils.optional(args, "registry"));
+const { list_projects, list_assets, list_versions, find_latest, read_summary, read_metadata } = utils.chooseSourceFunctions(utils.optional(args, "registry"), utils.optional(args, "gypsum"));
 
 // Creating the timestamp here, just so that if there are any operations
 // between now and completion of the index, we catch them in the updates. This
diff --git a/scripts/manual.js b/scripts/manual.js
index a78bd06..66f0de7 100644
--- a/scripts/manual.js
+++ b/scripts/manual.js
@@ -13,6 +13,9 @@ const args = parseArgs({
         registry: {
             type: "string",
         },
+        gypsum: {
+            type: "string",
+        },
         dir: {
             type: "string",
         },
@@ -29,7 +32,7 @@ const args = parseArgs({
 });
 
 const { db_paths, db_tokenizable } = utils.parseConfigurations(utils.required(args, "config"), utils.required(args, "dir"));
-const { list_projects, list_assets, list_versions, find_latest, read_summary, read_metadata } = utils.chooseSourceFunctions(utils.required(args, "registry"));
+const { list_projects, list_assets, list_versions, find_latest, read_summary, read_metadata } = utils.chooseSourceFunctions(utils.optional(args, "registry"), utils.optional(args, "gypsum"));
 
 await manualHandler(
     db_paths, 
diff --git a/scripts/update.js b/scripts/update.js
index db1b35a..e8fb77a 100644
--- a/scripts/update.js
+++ b/scripts/update.js
@@ -21,7 +21,7 @@ const args = parseArgs({
 
 const dir = utils.required(args, "dir");
 const { db_paths, db_tokenizable } = utils.parseConfigurations(utils.required(args, "config"), dir);
-const { list_logs, read_log, read_metadata, find_latest } = utils.chooseSourceFunctions(utils.optional(args, "registry"));
+const { list_logs, read_log, read_metadata, find_latest } = utils.chooseSourceFunctions(utils.optional(args, "registry"), utils.optional(args, "gypsum"));
 
 let lastmod_path = path.join(dir, "modified");
 let lastmod = new Date(Number(fs.readFileSync(lastmod_path)));
diff --git a/scripts/utils.js b/scripts/utils.js
index 1237a90..06b6415 100644
--- a/scripts/utils.js
+++ b/scripts/utils.js
@@ -1,4 +1,5 @@
 import * as local from "../src/local/index.js";
+import * as gypsum from "../src/gypsum/index.js";
 import * as fs from "fs";
 import * as path from "path";
 
@@ -13,8 +14,8 @@ export function parseConfigurations(configs, dir) {
     return { db_paths, db_tokenizable };
 }
 
-export function chooseSourceFunctions(registry) {
-    if (registry) {
+export function chooseSourceFunctions(registry, gypsum_url) {
+    if (registry !== null) {
         return {
             list_projects: () => local.listProjects(registry),
             list_assets: (project) => local.listAssets(registry, project),
@@ -25,8 +26,19 @@ export function chooseSourceFunctions(registry) {
             read_metadata: (project, asset, version, to_extract) => local.readMetadata(registry, project, asset, version, to_extract),
             find_latest: (project, asset) => local.fetchLatest(registry, project, asset),
         };
+    } else if (gypsum_url !== null)  {
+        return {
+            list_projects: () => gypsum.listProjects(gypsum_url),
+            list_assets: (project) => gypsum.listAssets(gypsum_url, project),
+            list_versions: (project, asset) => gypsum.listVersions(gypsum_url, project, asset),
+            list_logs: since => gypsum.listLogs(gypsum_url, since),
+            read_log: name => gypsum.readLog(gypsum_url, name),
+            read_summary: (project, asset, version) => gypsum.readSummary(gypsum_url, project, asset, version),
+            read_metadata: (project, asset, version, to_extract) => gypsum.readMetadata(gypsum_url, project, asset, version, to_extract),
+            find_latest: (project, asset) => gypsum.fetchLatest(gypsum_url, project, asset),
+        };
     } else {
-        throw new Error("non-registry arguments are not yet supported");
+        throw new Error("one of 'registry' or 'gypsum' must be provided");
     }
 }