The tool list_applications search parameter does not work with Argo CD REST API (v3.2.1)

[bodaWang]

I noticed a mismatch between the search parameter exposed by the list_applications tool and the actual capabilities of the Argo CD REST API.

The MCP tool:
list_applications

supports a parameter:
search: string

which implies that it can be used to filter applications.

However, when using Argo CD version:
• Version: v3.2.1+8c4ab63
• Build Date: 2025-11-30T11:48:14Z

the REST API:
GET /api/v1/applications
does not support a generic search parameter.

As a result, when an MCP client calls:
{ "name": "list_applications", "arguments": { "search": "keyword" } }

The response is not filtered at all, and returns the full list of applications. According to the Argo CD REST API, the supported query parameters are:
• name (string): the application’s name
• refresh (string): forces reconciliation
• projects (array): restrict by project
• resourceVersion (string): for watch calls
• selector (string): label selector
• repo (string): filter by repo URL
• appNamespace (string): filter by namespace
• project (array): legacy project filter

There is no search parameter supported by the API. This causes confusion because:
• The MCP tool interface suggests filtering capability via search
• But the underlying API does not support it
• The MCP server currently appears to pass search directly to the API without applying any fallback filtering