list_manifest_imaging_participants_sessions
AI agents call list_manifest_imaging_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.
The 'list_manifest_imaging_participants_sessions' tool follows the naming pattern of other retrieval/listing tools on the Nipoppy server. It accesses neuroimaging participant and session metadata without executing code, modifying data, or triggering external operations.
From the tool's definition Tool name contains 'list' and 'manifest', indicating data retrieval without modification. Description is empty but sibling tools like 'list_manifest_participants_sessions', 'get_bids_participants_sessions', and 'list_processed_participants_sessions' are all…
Attacks that exploit this kind of access
list_manifest_imaging_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 list_manifest_imaging_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.
list_manifest_imaging_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 list_manifest_imaging_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 list_manifest_imaging_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.
list_manifest_imaging_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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