AI agents call vast42_list_linears to retrieve information from AdButler without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
| Parameter | Type | Required | Description |
|---|---|---|---|
limit | number | — | Max results to return (default 100, max 100) |
offset | number | — | Pagination offset |
Parameters from the server's own tool schema.
This tool queries and returns information about VAST 4.2 linear media without creating, modifying, deleting, or executing any operations. It is a straightforward read operation with minimal risk if an AI agent misuses it—the worst outcome would be unauthorized information disclosure about ad inventory.
From the tool's definition Tool name contains 'list' and description states 'List all VAST 4.2 linear media', indicating a retrieval operation with no modification or side effects.
Attacks that exploit this kind of access
List all VAST 4.2 linear media. It is categorised as a Read tool in the AdButler MCP Server, which means it retrieves data without modifying state.
vast42_list_linears accepts 2 parameters: limit, offset. The full parameter table on this page comes from the server's own tool schema.
Register the AdButler MCP server in PolicyLayer and add a rule for vast42_list_linears: 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 AdButler. Nothing to install.
vast42_list_linears 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 vast42_list_linears 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 vast42_list_linears. 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.
vast42_list_linears is provided by the AdButler MCP server (adbutler/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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