configure_channel · Siglent Sds MCP: Risk & Policy

WHAT IT DOES

What configure_channel does on Siglent Sds

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

WHY IT NEEDS A POLICY

Why configure_channel needs a policy

This tool modifies oscilloscope channel parameters (likely settings like coupling, attenuation, impedance, or gain) but does not permanently destroy data or execute arbitrary code. The changes are reversible—a user can reconfigure the channel to previous settings. Therefore, it fits the Write category.

From the tool's definition Tool name is 'configure_channel' and description states 'Configure an analog channel', which modifies channel settings on the oscilloscope. This is a configuration change that is reversible.

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

configure_channel Rate-limited

configure_channel stays usable, but capped — an agent stuck in a loop can't make hundreds of changes a minute. Everything else on the server is denied unless you say otherwise.

View as policy code

policy.json

{
  "version": "1",
  "default": "deny",
  "tools": {
    "configure_channel": {
      "limits": [
        {
          "counter": "configure_channel_rate",
          "window": "minute",
          "max": 30,
          "scope": "grant"
        }
      ]
    }
  }
}

LIMIT THIS TOOL →

Instant setup, no code required.

PolicyLayer is an MCP gateway: every tool call is checked against your rule before it reaches Siglent Sds, so you can run agents against it safely.

FAQ

Questions about configure_channel

What does the configure_channel tool do? +

Configure an analog channel. It is categorised as a Write tool in the Siglent Sds MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.

How do I enforce a policy on configure_channel? +

Register the Siglent Sds MCP server in PolicyLayer and add a rule for configure_channel: 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 Siglent Sds. Nothing to install.

What risk level is configure_channel? +

configure_channel is a Write tool with medium risk. Write tools should be rate-limited to prevent accidental bulk modifications.

Can I rate-limit configure_channel? +

Yes. Add a rate_limit block to the configure_channel 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.

How do I block configure_channel completely? +

Set action: deny in the PolicyLayer policy for configure_channel. 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.

What MCP server provides configure_channel? +

configure_channel is provided by the Siglent Sds MCP server (magnusjohansson/siglent-sds-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.