diff --git a/codex-rs/cli/src/marketplace_cmd.rs b/codex-rs/cli/src/marketplace_cmd.rs
index d163abfe29..48dc2e4c8e 100644
--- a/codex-rs/cli/src/marketplace_cmd.rs
+++ b/codex-rs/cli/src/marketplace_cmd.rs
@@ -91,8 +91,13 @@ async fn run_add(args: AddMarketplaceArgs) -> Result<()> {
         sparse_paths,
     } = args;
 
+    let has_explicit_ref = ref_name.is_some();
     let source = parse_marketplace_source(&source, ref_name)?;
-    if !sparse_paths.is_empty() && !matches!(source, MarketplaceSource::Git { .. }) {
+    let source_is_git = matches!(source, MarketplaceSource::Git { .. });
+    if has_explicit_ref && !source_is_git {
+        bail!("--ref can only be used with git marketplace sources");
+    }
+    if !sparse_paths.is_empty() && !source_is_git {
         bail!("--sparse can only be used with git marketplace sources");
     }
 
@@ -281,12 +286,6 @@ fn parse_marketplace_source(
         return Ok(MarketplaceSource::Git { url, ref_name });
     }
 
-    if base_source.starts_with("http://") || base_source.starts_with("https://") {
-        bail!(
-            "URL marketplace manifests are not supported yet; pass a git repository URL or a local marketplace directory"
-        );
-    }
-
     bail!("invalid marketplace source format: {source}");
 }
 
@@ -340,8 +339,7 @@ fn is_ssh_git_url(source: &str) -> bool {
 }
 
 fn is_http_git_url(source: &str) -> bool {
-    (source.starts_with("http://") || source.starts_with("https://"))
-        && (source.ends_with(".git") || source.starts_with("https://github.com/"))
+    source.starts_with("http://") || source.starts_with("https://")
 }
 
 fn looks_like_github_shorthand(source: &str) -> bool {
@@ -522,6 +520,21 @@ mod tests {
         );
     }
 
+    #[test]
+    fn non_github_https_source_parses_as_git_url() {
+        assert_eq!(
+            parse_marketplace_source(
+                "https://gitlab.com/owner/repo",
+                /* explicit_ref */ None
+            )
+            .unwrap(),
+            MarketplaceSource::Git {
+                url: "https://gitlab.com/owner/repo".to_string(),
+                ref_name: None,
+            }
+        );
+    }
+
     #[test]
     fn utc_timestamp_formats_unix_epoch_as_rfc3339_utc() {
         assert_eq!(format_utc_timestamp(0), "1970-01-01T00:00:00Z");
diff --git a/codex-rs/cli/src/marketplace_cmd/ops.rs b/codex-rs/cli/src/marketplace_cmd/ops.rs
index 1027e96fd3..b8e3091964 100644
--- a/codex-rs/cli/src/marketplace_cmd/ops.rs
+++ b/codex-rs/cli/src/marketplace_cmd/ops.rs
@@ -14,7 +14,7 @@ pub(super) fn clone_git_source(
 ) -> Result<()> {
     let destination = destination.to_string_lossy().to_string();
     if sparse_paths.is_empty() {
-        run_git(&["clone", url, destination.as_str()], None)?;
+        run_git(&["clone", url, destination.as_str()], /*cwd*/ None)?;
         if let Some(ref_name) = ref_name {
             run_git(&["checkout", ref_name], Some(Path::new(&destination)))?;
         }
@@ -29,7 +29,7 @@ pub(super) fn clone_git_source(
             url,
             destination.as_str(),
         ],
-        None,
+        /*cwd*/ None,
     )?;
     let mut sparse_args = vec!["sparse-checkout", "set"];
     sparse_args.extend(sparse_paths.iter().map(String::as_str));
diff --git a/codex-rs/cli/tests/marketplace_add.rs b/codex-rs/cli/tests/marketplace_add.rs
index d09f6d836a..46dbe663e9 100644
--- a/codex-rs/cli/tests/marketplace_add.rs
+++ b/codex-rs/cli/tests/marketplace_add.rs
@@ -255,3 +255,32 @@ async fn marketplace_add_sparse_flag_parses_before_and_after_source() -> Result<
 
     Ok(())
 }
+
+#[tokio::test]
+async fn marketplace_add_rejects_ref_for_local_directory() -> Result<()> {
+    let codex_home = TempDir::new()?;
+    let source = TempDir::new()?;
+    write_marketplace_source(source.path(), "local ref")?;
+
+    codex_command(codex_home.path())?
+        .args([
+            "marketplace",
+            "add",
+            "--ref",
+            "main",
+            source.path().to_str().unwrap(),
+        ])
+        .assert()
+        .failure()
+        .stderr(contains(
+            "--ref can only be used with git marketplace sources",
+        ));
+
+    assert!(
+        !marketplace_install_root(codex_home.path())
+            .join("debug")
+            .exists()
+    );
+
+    Ok(())
+}