get_pre_reorg_participants_sessions
AI agents call get_pre_reorg_participants_sessions to retrieve information from Nipoppy 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 participant and session information from neuroimaging datasets organized under BIDS standard. The 'get' prefix, context of clinical data management, and sibling tool patterns all indicate a read-only query operation with no side effects. While it accesses sensitive clinical data (which could elevate concern in a healthcare context), the tool itself performs only retrieval.
From the tool's definition Tool name 'get_pre_reorg_participants_sessions' uses the verb 'get', and sibling tools on this server (get_bids_participants_sessions, get_dataset_info, get_participants_sessions, list_manifest_imaging_participants_sessions, navigate_dataset) are all…
Attacks that exploit this kind of access
get_pre_reorg_participants_sessions. It is categorised as a Read tool in the Nipoppy MCP Server MCP Server, which means it retrieves data without modifying state.
Register the Nipoppy MCP Server MCP server in PolicyLayer and add a rule for get_pre_reorg_participants_sessions: 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 Nipoppy MCP Server. Nothing to install.
get_pre_reorg_participants_sessions 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_pre_reorg_participants_sessions 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_pre_reorg_participants_sessions. 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_pre_reorg_participants_sessions is provided by the Nipoppy MCP Server MCP server (nipoppy/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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