This record as markdown: /tools/mcp-dev/create-partial-view.md
What create-partial-view does on Mcp Dev
AI agents use create-partial-view to create or update resources in Mcp Dev, usually the action step of a workflow, after the agent has gathered context. Every call changes real data in your Mcp Dev environment.
Why create-partial-view is rated Medium
This tool creates a new partial view (a reusable template component in Umbraco CMS). While it modifies the system by adding new content, it is reversible—partial views can be edited, renamed, or deleted. The impact is write-level: it adds a new artifact without irreversibly destroying data or executing arbitrary code.
From the tool's definition Tool name 'create-partial-view' and description 'Creates a new partial view' indicate creation of new content/artifacts in the CMS system.
Attacks that exploit this kind of access
The rule that runs create-partial-view safely
PolicyLayer is an MCP gateway: it sits between your AI agents and Mcp Dev, and checks every tool call against a rule you set before the call runs. Nothing changes on the server itself. For create-partial-view, this is the rule to start with:
create-partial-view 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.
The button opens the PolicyLayer dashboard: create your workspace, connect Mcp Dev, apply this rule, and every create-partial-view call is checked against it from then on.
Questions about create-partial-view
Creates a new partial view. It is categorised as a Write tool in the Mcp Dev MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.
Register the Mcp Dev MCP server in PolicyLayer and add a rule for create-partial-view: 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 Mcp Dev. Nothing to install.
create-partial-view 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 create-partial-view 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 create-partial-view. 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.
create-partial-view is provided by the Mcp Dev MCP server (@umbraco-cms/mcp-dev). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
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