AI agents invoke arfcn_calculator_4g_compute to trigger actions in Rfhub. What it does depends on the arguments the agent supplies, and its effects often reach beyond the immediate call — builds kicked off, notifications sent, workflows started.
| Parameter | Type | Required | Description |
|---|---|---|---|
Band | string | — | 4G/LTE标准频带 |
FREF | number | — | 4G/LTE标准中心频率 |
Mode | string | — | 当前函数的计算模型，是选择以频点模式还是频率模式进行计算，直接关乎于后续参数的选择 |
NREF | integer | — | 4G/LTE标准中心频点 |
Bandwidth | number | — | 4G/LTE标准信道带宽 |
DataTransmissionDirection | string | Yes | 数据传输方向，是上行还是下行 |
Parameters from the server's own tool schema.
This tool performs frequency-to-channel-number conversions for 4G LTE networks and displays band details. It executes a computation/calculation rather than simply reading stored data or writing to a database. The blast radius is low since it is a pure mathematical converter with no apparent side effects on external systems or data stores.
From the tool's definition 'compute' in the name and '频率与频点之间的相互转换' (mutual conversion between frequency and channel number) indicating computational/calculation operations
Attacks that exploit this kind of access
支持4G LTE网络中频率与频点之间的相互转换，并附带特定频段的详细信息展示. It is categorised as a Execute tool in the Rfhub MCP Server, which means it can trigger actions or run processes. Use rate limits and argument validation.
arfcn_calculator_4g_compute accepts 6 parameters: Band, FREF, Mode, NREF, Bandwidth, DataTransmissionDirection. Required: DataTransmissionDirection. The full parameter table on this page comes from the server's own tool schema.
Register the Rfhub MCP server in PolicyLayer and add a rule for arfcn_calculator_4g_compute: allow, deny, rate-limit, or require approval. Point your MCP client at the PolicyLayer proxy URL and the rule is enforced on every call, before it reaches Rfhub. Nothing to install.
arfcn_calculator_4g_compute is a Execute tool with high risk. Execute tools should be rate-limited and have argument validation enabled.
Yes. Add a rate_limit block to the arfcn_calculator_4g_compute rule in your PolicyLayer policy. For example, setting max: 10 and window: 60 limits the tool to 10 calls per minute. Rate limits are tracked per agent session and reset automatically.
Set action: deny in the PolicyLayer policy for arfcn_calculator_4g_compute. The AI agent will receive a policy violation error and cannot call the tool. You can also include a reason field to explain why the tool is blocked.
arfcn_calculator_4g_compute is provided by the Rfhub MCP server (rfhub-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Every MCP server has a record like this.
Type a name, get the same breakdown: verified identity, auth posture, risk grade, capabilities, recommended policy.
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