Get all child work packages of a parent work package
AI agents call get_work_package_children to retrieve information from OpenProject 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 hierarchical data about work packages without modifying, deleting, or executing any operations. It is a straightforward query that fetches existing child work packages associated with a parent, consistent with Read category semantics. The low severity reflects minimal blast radius—misuse would at worst expose project structure information already accessible to authorized users.
From the tool's definition Tool name 'get_work_package_children' and description 'Get all child work packages of a parent work package' indicate a retrieval operation with no side effects.
Attacks that exploit this kind of access
Get all child work packages of a parent work package. It is categorised as a Read tool in the OpenProject MCP Server MCP Server, which means it retrieves data without modifying state.
Register the OpenProject MCP Server MCP server in PolicyLayer and add a rule for get_work_package_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 OpenProject MCP Server. Nothing to install.
get_work_package_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 get_work_package_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 get_work_package_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.
get_work_package_children is provided by the OpenProject MCP Server MCP server (widjis/mcp-openproject). 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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