aspire mcp call command

Name

aspire mcp call - Call an MCP tool on a running resource.

Synopsis

aspire mcp call   [options]

Description

The aspire mcp call command calls an MCP tool exposed by a resource in a running AppHost. Use aspire mcp tools first if you need to discover the available resources and tool names.

When executed without the --apphost option, the command:

1
Scans for all running AppHost processes.
2
If multiple AppHosts are running within the current directory scope, prompts you to select which one to target.
3
If only one AppHost is running in scope, connects to it directly.
4
If no in-scope AppHosts are found but out-of-scope AppHosts exist, displays all running AppHosts for selection.

Arguments

<resource>

The name of the resource that exposes the MCP tool.
<tool>

The name of the MCP tool to call.

Options

The following options are available:

-i, --input <input>

JSON input to pass to the tool.
- - - - Examples
Call a tool on a running resource:
```
aspire mcp call myresource mytool
```

Pass JSON input to the tool call:

aspire mcp call myresource mytool --input '{"message":"hello"}'

Target a specific AppHost project:

aspire mcp call myresource mytool --apphost './src/MyApp.AppHost/MyApp.AppHost.csproj'