marvin_get_children
AI agents call marvin_get_children to retrieve information from Amazing Marvin MCP Server without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
The tool name strongly suggests retrieval of child tasks or subtasks (likely from Amazing Marvin's hierarchical task structure). Consistent with the server's task management context and the Get pattern of sibling tools, this is a read-only operation with no side effects. Even if misused by an AI agent, it would only expose existing data without causing damage or unintended modifications.
From the tool's definition Tool name 'marvin_get_children' with 'get' prefix suggests a retrieval operation. Sibling tools on the server include 'marvin_get_categories', 'marvin_get_due_tasks', 'marvin_get_labels', and 'marvin_get_todays_tasks', all Read operations that query task…
Attacks that exploit this kind of access
marvin_get_children. It is categorised as a Read tool in the Amazing Marvin MCP Server MCP Server, which means it retrieves data without modifying state.
Register the Amazing Marvin MCP Server MCP server in PolicyLayer and add a rule for marvin_get_children: 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 Amazing Marvin MCP Server. Nothing to install.
marvin_get_children 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 marvin_get_children 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 marvin_get_children. 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.
marvin_get_children is provided by the Amazing Marvin MCP Server MCP server (lucadeleo/amazing-marvin-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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