visual_baseline
A read tool on the Looking Glass MCP server.
This record as markdown: /tools/io-github-sahib-sawhney-wh-looking-glass-mcp/visual-baseline.md
What visual_baseline does on Looking Glass
AI agents call visual_baseline to retrieve information from Looking Glass without modifying anything. It is typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
| Parameter | Type | Required | Description |
|---|---|---|---|
name | string | Yes | Baseline name (e.g., "homepage", "login-form") |
Parameters from the server's own tool schema.
Why visual_baseline is rated Low
Based on sibling tools (browser_analyze_page, browser_click, browser_console_messages), this server provides browser automation. 'visual_baseline' likely captures or compares visual state (Read category), similar to screenshot operations. The empty description significantly lowers confidence. No evidence of side effects, destruction, code execution, or financial impact.
From the tool's definition Tool name 'visual_baseline' suggests screenshot or visual state capture; description is empty, limiting confidence.
Attacks that exploit this kind of access
The rule that runs visual_baseline safely
PolicyLayer is an MCP gateway: it sits between your AI agents and Looking Glass, and checks every tool call against a rule you set before the call runs. Nothing changes on the server itself. For visual_baseline, this is the rule to start with:
visual_baseline is read-only, so it stays allowed. Everything else on the server is denied unless you say otherwise.
The button opens the PolicyLayer dashboard: create your workspace, connect Looking Glass, apply this rule, and every visual_baseline call is checked against it from then on.
Questions about visual_baseline
visual_baseline is a read tool on the Looking Glass MCP server. It is categorised as a Read tool in the Looking Glass MCP Server, which means it retrieves data without modifying state.
visual_baseline accepts 1 parameter: name. Required: name. The full parameter table on this page comes from the server's own tool schema.
Register the Looking Glass MCP server in PolicyLayer and add a rule for visual_baseline: 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 Looking Glass. Nothing to install.
visual_baseline 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 visual_baseline 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 visual_baseline. 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.
visual_baseline is provided by the Looking Glass MCP server (looking-glass-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
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