AI agents call read_all_channels to retrieve information from Niscope without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
The tool appears designed to query or retrieve waveform data from all oscilloscope channels simultaneously, which is a Read operation (data retrieval with no side effects). However, confidence is moderate (0.75) rather than high because the description is empty, leaving some ambiguity about potential configuration side-effects.
From the tool's definition Tool name 'read_all_channels' indicates data retrieval from oscilloscope channels. Context shows this is part of an NI oscilloscope control server with waveform acquisition and measurement capabilities.
Attacks that exploit this kind of access
read_all_channels. It is categorised as a Read tool in the Niscope MCP Server, which means it retrieves data without modifying state.
Register the Niscope MCP server in PolicyLayer and add a rule for read_all_channels: 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 Niscope. Nothing to install.
read_all_channels is a Read tool with low risk. Read-only tools are generally safe to allow by default.
Yes. Add a rate_limit block to the read_all_channels 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 read_all_channels. 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.
read_all_channels is provided by the Niscope MCP server (ymzds/niscope-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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