query_series
AI agents call query_series to retrieve information from Simple Dicom without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
The tool performs a read-only query operation against DICOM medical data. Although the tool description is empty, the context from sibling tools and the server's stated purpose of querying/reading DICOM data strongly indicates this retrieves series-level metadata without modifying or destructively affecting any data.
From the tool's definition Tool name 'query_series' and sibling tools (query_instances, query_patients, query_studies) are all query-based retrieval functions on a DICOM medical imaging server.
Attacks that exploit this kind of access
query_series. It is categorised as a Read tool in the Simple Dicom MCP Server, which means it retrieves data without modifying state.
Register the Simple Dicom MCP server in PolicyLayer and add a rule for query_series: 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 Simple Dicom. Nothing to install.
query_series 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 query_series 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 query_series. 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.
query_series is provided by the Simple Dicom MCP server (thalesmms/simple-dicom-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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