AI agents call get_unlock_impact to retrieve information from Todos without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This tool performs a read-only query to determine the impact of task completion on downstream dependencies. It retrieves and presents information about which tasks are currently blocked and would transition to 'ready' status upon completion of the specified task, with no side effects, state changes, or data modifications. This is a straightforward informational query operation characteristic of the Read category.
From the tool's definition Tool name 'get_unlock_impact' and description 'Show which dependent tasks would become ready if a task completes' indicate a query/inspection operation that retrieves information about task dependencies without modifying any state.
Attacks that exploit this kind of access
Show which dependent tasks would become ready if a task completes. It is categorised as a Read tool in the Todos MCP Server, which means it retrieves data without modifying state.
Register the Todos MCP server in PolicyLayer and add a rule for get_unlock_impact: 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 Todos. Nothing to install.
get_unlock_impact 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_unlock_impact 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_unlock_impact. 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_unlock_impact is provided by the Todos MCP server (@hasna/todos). 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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