# `TMCP025` list_all_tags returns empty list when no tags

Call `list_all_tags` when no requirements have tags and verify an empty list is returned

:::{dropdown} Is a test for
:open: 
:icon: check-circle-fill
:color: primary

[`MCP008` List all tags](/requirements/MCP008)
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:::{dropdown} Automated in
:open: 
:icon: check-circle-fill
:color: success

{fab}`python` [`test_list_all_tags_empty`](https://github.com/agagniere/speky/blob/master/tests/test_mcp_server.py#L691)
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:::{dropdown} Source
:icon: file-code
:color: info

__Source file__: [`specs/mcp/test_08.yaml`](https://github.com/agagniere/speky/blob/master/specs/mcp/test_08.yaml)

__Loaded from__: [`speky_mcp`](https://github.com/agagniere/speky/blob/master/specs/mcp/mcp.toml)

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## Initial state
An initialized MCP server with only the simple requirements, tests and comments loaded.

## Procedure
### Step 1
The client calls `list_all_tags` on a specification where no requirement has tags
```json
{
  "id": 2,
  "jsonrpc": "2.0",
  "method": "tools/call",
  "params": {
    "name": "list_all_tags",
    "arguments": {}
  }
}

```
### Step 2
Verify an empty list is returned
```json
{
  "id": 2,
  "jsonrpc": "2.0",
  "result": {
    "structuredContent": {
      "tags": []
    }
  }
}

```