scope_screenshot
AI agents call scope_screenshot to retrieve information from LeCroy Oscilloscope MCP without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
Capturing a screenshot is a read-only operation that retrieves visual data from the oscilloscope display without side effects. It does not modify any configuration, trigger measurements, or alter the instrument's state.
From the tool's definition Tool name is 'scope_screenshot' which captures a visual representation of oscilloscope display state. The server description mentions 'screenshots' as one of supported operations alongside 'waveform capture, measurements, channel configuration, and…
Attacks that exploit this kind of access
scope_screenshot. It is categorised as a Read tool in the LeCroy Oscilloscope MCP MCP Server, which means it retrieves data without modifying state.
Register the LeCroy Oscilloscope MCP server in PolicyLayer and add a rule for scope_screenshot: 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 LeCroy Oscilloscope MCP. Nothing to install.
scope_screenshot 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 scope_screenshot 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 scope_screenshot. 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.
scope_screenshot is provided by the LeCroy Oscilloscope MCP server (lucasgerads/lecroy-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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