Provides details about a specific GraphQL type (Object, Input, Scalar, Enum, Interface, Union)...
AI agents call describe_graphql_type to retrieve information from Advanced Hasura GraphQL MCP Server without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This tool retrieves and queries GraphQL schema information (types, structures, definitions) without creating, modifying, deleting, or executing any data operations. It is a pure read/discovery operation used for schema exploration. Even in the context of a server that supports mutations via sibling tools (run_graphql_mutation), this specific tool performs only read-only introspection.
From the tool's definition Tool name 'describe_graphql_type' and description 'Provides details about a specific GraphQL type' indicate retrieval of schema metadata with no side effects. The verb 'Provides details' and 'describe' are introspection operations.
Attacks that exploit this kind of access
Provides details about a specific GraphQL type (Object, Input, Scalar, Enum, Interface, Union). It is categorised as a Read tool in the Advanced Hasura GraphQL MCP Server MCP Server, which means it retrieves data without modifying state.
Register the Advanced Hasura GraphQL MCP Server MCP server in PolicyLayer and add a rule for describe_graphql_type: 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 Advanced Hasura GraphQL MCP Server. Nothing to install.
describe_graphql_type 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 describe_graphql_type 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 describe_graphql_type. 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.
describe_graphql_type is provided by the Advanced Hasura GraphQL MCP Server MCP server (vikasversetest-debug/hasura_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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