Merge all visible layers into one
AI agents use photoshop_merge_visible_layers to create or update resources in Photoshop MCP Windows-First — usually the action step of a workflow, after the agent has gathered context. Every call changes real data in your Photoshop MCP Windows-First environment.
This tool creates a new composite layer state by merging visible layers together. While it modifies the document structure irreversibly in the final saved state, within Photoshop's session it can be undone. The operation affects image composition but does not delete underlying layers permanently during the session, and the change is non-destructive from a file perspective until explicitly saved.
From the tool's definition The tool name 'photoshop_merge_visible_layers' and description 'Merge all visible layers into one' indicate the tool modifies image data by combining multiple layers into a single layer. This is a reversible operation (can be undone via undo/history).
Attacks that exploit this kind of access
Merge all visible layers into one. It is categorised as a Write tool in the Photoshop MCP Windows-First MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.
Register the Photoshop MCP Windows-First MCP server in PolicyLayer and add a rule for photoshop_merge_visible_layers: 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 Photoshop MCP Windows-First. Nothing to install.
photoshop_merge_visible_layers is a Write tool with medium risk. Write tools should be rate-limited to prevent accidental bulk modifications.
Yes. Add a rate_limit block to the photoshop_merge_visible_layers 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 photoshop_merge_visible_layers. 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.
photoshop_merge_visible_layers is provided by the Photoshop MCP Windows-First MCP server (rookietopred02-gif/photoshop-mcp-windows-first). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
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