GET /v1/lists/{object_type}/{list_slug}. object_type: company or contact. list_slug: e.g. target-accounts. Parameters: page, page_size (max 100), sort_by, sort_order (asc/desc).
AI agents call get_list_items to retrieve information from DataMerge MCP without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This tool performs a read-only retrieval of paginated list items (companies or contacts) from the DataMerge API. The parameters (page, page_size, sort_by, sort_order) are all for controlling how data is retrieved and displayed, not for modifying or executing operations. There are no indications of write, delete, or execute capabilities.
From the tool's definition GET request that retrieves list items with pagination and sorting parameters. No modification, deletion, or execution capability indicated. The endpoint is explicitly a GET operation which retrieves data without side effects.
Attacks that exploit this kind of access
GET /v1/lists/{object_type}/{list_slug}. object_type: company or contact. list_slug: e.g. target-accounts. Parameters: page, page_size (max 100), sort_by, sort_order (asc/desc). It is categorised as a Read tool in the DataMerge MCP MCP Server, which means it retrieves data without modifying state.
Register the DataMerge MCP server in PolicyLayer and add a rule for get_list_items: 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 DataMerge MCP. Nothing to install.
get_list_items 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_list_items 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_list_items. 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_list_items is provided by the DataMerge MCP server (poolside-ventures/datamerge-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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