Gets JSON Schemas for multiple data types in a single batch request. Returns JSON Schemas describing the value structure for each specified data type. This is more efficient than calling get-data-type-schema multiple times when you need schemas for several data types.
AI agents call get-data-type-schemas to retrieve information from Mcp Dev without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This tool retrieves and returns schema information about data types without creating, modifying, deleting, or executing anything. It is a read-only query operation with no side effects. The batch retrieval mechanism does not change the underlying data or trigger external operations.
From the tool's definition Gets JSON Schemas for multiple data types in a single batch request. Returns JSON Schemas describing the value structure for each specified data type. No modification, deletion, or execution keywords present.
Attacks that exploit this kind of access
Gets JSON Schemas for multiple data types in a single batch request. Returns JSON Schemas describing the value structure for each specified data type. This is more efficient than calling get-data-type-schema multiple times when you need schemas for several data types. It is categorised as a Read tool in the Mcp Dev MCP Server, which means it retrieves data without modifying state.
Register the Mcp Dev MCP server in PolicyLayer and add a rule for get-data-type-schemas: 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.
get-data-type-schemas 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 get-data-type-schemas 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 get-data-type-schemas. 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.
get-data-type-schemas 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.
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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