AI agents call sigsci_get_site_member to retrieve information from Sigsci without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This tool retrieves information about a site member without modifying, deleting, or executing external operations. It is a simple data query operation consistent with read-only access patterns. The low severity reflects minimal risk—the worst outcome is exposure of member details already stored in the Signal Sciences system, not unauthorized actions or data destruction.
From the tool's definition Tool name 'sigsci_get_site_member' and description 'Get details of a specific site member' indicate a retrieval operation.
Attacks that exploit this kind of access
Get details of a specific site member. It is categorised as a Read tool in the Sigsci MCP Server, which means it retrieves data without modifying state.
Register the Sigsci MCP server in PolicyLayer and add a rule for sigsci_get_site_member: 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 Sigsci. Nothing to install.
sigsci_get_site_member 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 sigsci_get_site_member 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 sigsci_get_site_member. 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.
sigsci_get_site_member is provided by the Sigsci MCP server (yuki777/sigsci-mcp-server). 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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