Get the full holder roster — free-for-everyone shops + hand-picked holder-only items + the weekly Monday drop schedule. Pass the session token from complete-sign-in.
AI agents call get-roster to retrieve information from Spines Underground without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This tool queries and retrieves informational data (roster, shop listings, schedule) without creating, modifying, deleting, or executing operations. It requires a session token for authentication but performs no side effects. The blast radius of misuse is limited to information disclosure, making this a low-severity Read operation.
From the tool's definition Tool description states 'Get the full holder roster' and retrieve information about 'free-for-everyone shops + hand-picked holder-only items + the weekly Monday drop schedule.' The verb 'Get' and action of retrieving roster/schedule data with no modification…
Attacks that exploit this kind of access
Get the full holder roster — free-for-everyone shops + hand-picked holder-only items + the weekly Monday drop schedule. Pass the session token from complete-sign-in. It is categorised as a Read tool in the Spines Underground MCP Server, which means it retrieves data without modifying state.
Register the Spines Underground MCP server in PolicyLayer and add a rule for get-roster: 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 Spines Underground. Nothing to install.
get-roster 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-roster 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-roster. 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-roster is provided by the Spines Underground MCP server (lisamaraventano-spine/spines-underground). 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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