# updateValue

更新值内容

Agent View of the PolicyLayer registry record for `updateValue`. HTML page: https://policylayer.com/tools/7gugu-whistle-mcp/updatevalue

## Facts

- Tool: `updateValue`
- Server: Whistle (`7gugu/whistle-mcp`) — https://policylayer.com/tools/7gugu-whistle-mcp.md
- Homepage: https://github.com/7gugu/whistle-mcp
- Risk category: Write (Medium risk)
- Registry record: grade F, identity unverified
- Server rate-limited: no
- Parameters: 0
- Recommended policy verdict: Rate-limited

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

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

## Why updateValue is rated Medium

This tool creates or modifies configuration data reversibly within the Whistle proxy server. It does not delete data (which would be Destructive), execute arbitrary commands (Execute), or involve financial transactions. Users can revert changes by updating values again, making it a Write operation.

From the tool's own definition: "Tool name is 'updateValue' and description states '更新值内容' (update value content). This modifies existing data within the Whistle proxy configuration by updating stored values."

## Use case

AI agents use updateValue to create or update resources in Whistle, usually the action step of a workflow, after the agent has gathered context. Every call changes real data in your Whistle environment.

## Recommended policy (PolicyLayer)

Verdict: **Rate-limited**. Enforced by the PolicyLayer MCP gateway (https://policylayer.com/mcp-gateway) before a call reaches Whistle:

```json
{
  "version": "1",
  "default": "deny",
  "tools": {
    "updateValue": {
      "limits": [
        {
          "counter": "updatevalue_rate",
          "window": "minute",
          "max": 30,
          "scope": "grant"
        }
      ]
    }
  }
}
```

## Other tools on Whistle (33)

- `deleteGroup` — Destructive — https://policylayer.com/tools/7gugu-whistle-mcp/deletegroup.md
- `deleteRule` — Destructive — https://policylayer.com/tools/7gugu-whistle-mcp/deleterule.md
- `deleteValue` — Destructive — https://policylayer.com/tools/7gugu-whistle-mcp/deletevalue.md
- `deleteValueGroup` — Destructive — https://policylayer.com/tools/7gugu-whistle-mcp/deletevaluegroup.md
- `replayRequest` — Execute — https://policylayer.com/tools/7gugu-whistle-mcp/replayrequest.md
- `toggleHttpInterception` — Execute — https://policylayer.com/tools/7gugu-whistle-mcp/togglehttpinterception.md
- `toggleHttpsInterception` — Execute — https://policylayer.com/tools/7gugu-whistle-mcp/togglehttpsinterception.md
- `toggleProxy` — Execute — https://policylayer.com/tools/7gugu-whistle-mcp/toggleproxy.md
- `getAllValues` — Read — https://policylayer.com/tools/7gugu-whistle-mcp/getallvalues.md
- `getCurrentTimestamp` — Read — https://policylayer.com/tools/7gugu-whistle-mcp/getcurrenttimestamp.md
- `getInterceptInfo` — Read — https://policylayer.com/tools/7gugu-whistle-mcp/getinterceptinfo.md
- `getRules` — Read — https://policylayer.com/tools/7gugu-whistle-mcp/getrules.md
- `getValue` — Read — https://policylayer.com/tools/7gugu-whistle-mcp/getvalue.md
- `getValueList` — Read — https://policylayer.com/tools/7gugu-whistle-mcp/getvaluelist.md
- `getWhistleStatus` — Read — https://policylayer.com/tools/7gugu-whistle-mcp/getwhistlestatus.md
- `addRuleToGroup` — Write — https://policylayer.com/tools/7gugu-whistle-mcp/addruletogroup.md
- `addValueToGroup` — Write — https://policylayer.com/tools/7gugu-whistle-mcp/addvaluetogroup.md
- `createGroup` — Write — https://policylayer.com/tools/7gugu-whistle-mcp/creategroup.md
- `createRule` — Write — https://policylayer.com/tools/7gugu-whistle-mcp/createrule.md
- `createValue` — Write — https://policylayer.com/tools/7gugu-whistle-mcp/createvalue.md
- `createValuesGroup` — Write — https://policylayer.com/tools/7gugu-whistle-mcp/createvaluesgroup.md
- `disableRule` — Write — https://policylayer.com/tools/7gugu-whistle-mcp/disablerule.md
- `enableRule` — Write — https://policylayer.com/tools/7gugu-whistle-mcp/enablerule.md
- `removeRuleFromGroup` — Write — https://policylayer.com/tools/7gugu-whistle-mcp/removerulefromgroup.md
- `removeValueFromGroup` — Write — https://policylayer.com/tools/7gugu-whistle-mcp/removevaluefromgroup.md
- `renameGroup` — Write — https://policylayer.com/tools/7gugu-whistle-mcp/renamegroup.md
- `renameRule` — Write — https://policylayer.com/tools/7gugu-whistle-mcp/renamerule.md
- `renameValue` — Write — https://policylayer.com/tools/7gugu-whistle-mcp/renamevalue.md
- `renameValueGroup` — Write — https://policylayer.com/tools/7gugu-whistle-mcp/renamevaluegroup.md
- `setAllRulesState` — Write — https://policylayer.com/tools/7gugu-whistle-mcp/setallrulesstate.md
- …and 3 more: https://policylayer.com/tools/7gugu-whistle-mcp.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`

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Source: the PolicyLayer MCP registry — one continuously verified record per MCP server. Full record: https://policylayer.com/registry?q=7gugu-whistle-mcp · API: https://policylayer.com/registry/api · Policy library: https://policylayer.com/policies/7gugu-whistle-mcp