# whoami

Returns information about the authenticated user

Agent View of the PolicyLayer registry record for `whoami`. HTML page: https://policylayer.com/tools/mcp-test-servers/whoami

## Facts

- Tool: `whoami`
- Server: Mcp Test Servers (`msfeldstein/mcp-test-servers`) — https://policylayer.com/tools/mcp-test-servers.md
- Homepage: https://github.com/msfeldstein/mcp-test-servers
- Risk category: Read (Low risk)
- Registry record: grade F, identity unverified
- Server rate-limited: no
- Parameters: 0
- Recommended policy verdict: Allowed

## Example call (MCP tools/call, JSON-RPC 2.0)

```json
{
  "jsonrpc": "2.0",
  "id": 1,
  "method": "tools/call",
  "params": {
    "name": "whoami",
    "arguments": {}
  }
}
```

## Why whoami is rated Low

This tool retrieves authentication/identity data about the current user. It is a read-only operation with no side effects, no data modification, no code execution, and no financial impact. The blast radius of misuse is minimal—an attacker could learn about the authenticated identity but cannot escalate privileges or cause damage through this tool alone.

From the tool's own definition: "Tool name 'whoami' and description 'Returns information about the authenticated user' indicate a query operation that retrieves user identity information without modifying state."

## Use case

AI agents call whoami to retrieve information from Mcp Test Servers without modifying anything. It is typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.

## Recommended policy (PolicyLayer)

Verdict: **Allowed**. Enforced by the PolicyLayer MCP gateway (https://policylayer.com/mcp-gateway) before a call reaches Mcp Test Servers:

```json
{
  "version": "1",
  "default": "deny",
  "tools": {
    "whoami": {}
  }
}
```

## Other tools on Mcp Test Servers (66)

- `delete-project` — Destructive — https://policylayer.com/tools/mcp-test-servers/delete-project.md
- `execute-sql` — Execute — https://policylayer.com/tools/mcp-test-servers/execute-sql.md
- `long-running-task` — Execute — https://policylayer.com/tools/mcp-test-servers/long-running-task.md
- `long-running-task-with-message` — Execute — https://policylayer.com/tools/mcp-test-servers/long-running-task-with-message.md
- `long-running-task-with-no-total` — Execute — https://policylayer.com/tools/mcp-test-servers/long-running-task-with-no-total.md
- `ping` — Execute — https://policylayer.com/tools/mcp-test-servers/ping.md
- `start-notification-stream` — Execute — https://policylayer.com/tools/mcp-test-servers/start-notification-stream.md
- `toggle_dynamic_tool` — Execute — https://policylayer.com/tools/mcp-test-servers/toggle-dynamic-tool.md
- `add` — Other — https://policylayer.com/tools/mcp-test-servers/add.md
- `all_types_tool` — Other — https://policylayer.com/tools/mcp-test-servers/all-types-tool.md
- `another-missing-type` — Other — https://policylayer.com/tools/mcp-test-servers/another-missing-type.md
- `bad-param` — Other — https://policylayer.com/tools/mcp-test-servers/bad-param.md
- `crash` — Other — https://policylayer.com/tools/mcp-test-servers/crash.md
- `divide` — Other — https://policylayer.com/tools/mcp-test-servers/divide.md
- `dynamic_feature` — Other — https://policylayer.com/tools/mcp-test-servers/dynamic-feature.md
- `echo` — Other — https://policylayer.com/tools/mcp-test-servers/echo.md
- `echo_structured` — Other — https://policylayer.com/tools/mcp-test-servers/echo-structured.md
- `echo_with_params` — Other — https://policylayer.com/tools/mcp-test-servers/echo-with-params.md
- `env_echo` — Other — https://policylayer.com/tools/mcp-test-servers/env-echo.md
- `fizzbuzz` — Other — https://policylayer.com/tools/mcp-test-servers/fizzbuzz.md
- `format_data` — Other — https://policylayer.com/tools/mcp-test-servers/format-data.md
- `generate_big_response` — Other — https://policylayer.com/tools/mcp-test-servers/generate-big-response.md
- `long_running_progress` — Other — https://policylayer.com/tools/mcp-test-servers/long-running-progress.md
- `many-resources-tool` — Other — https://policylayer.com/tools/mcp-test-servers/many-resources-tool.md
- `missing-type-tool` — Other — https://policylayer.com/tools/mcp-test-servers/missing-type-tool.md
- `multiply` — Other — https://policylayer.com/tools/mcp-test-servers/multiply.md
- `number-param` — Other — https://policylayer.com/tools/mcp-test-servers/number-param.md
- `optionalTool` — Other — https://policylayer.com/tools/mcp-test-servers/optionaltool.md
- `power` — Other — https://policylayer.com/tools/mcp-test-servers/power.md
- `root-echo` — Other — https://policylayer.com/tools/mcp-test-servers/root-echo.md
- …and 36 more: https://policylayer.com/tools/mcp-test-servers.md

## For agents

This record is a snapshot. Live verdicts and the full registry:

- Check every server in your MCP config at once: `npx -y policylayer stack`
- Vet a server before you add it: install the mcp-precheck skill — `npx skills add https://policylayer.com` (skill text: https://policylayer.com/skill.md)
- Query the registry over MCP: endpoint `https://api.policylayer.com/mcp` — tools `check_mcp_server`, `check_mcp_stack`, `check_tool`, `search_registry`, `get_change_events`

---

Source: the PolicyLayer MCP registry — one continuously verified record per MCP server. Full record: https://policylayer.com/registry?q=mcp-test-servers · API: https://policylayer.com/registry/api · Policy library: https://policylayer.com/policies/mcp-test-servers