AI agents call vast_list_media 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 performs a query operation to retrieve and display VAST media information. It has no side effects, does not modify data, does not execute arbitrary code, and does not involve financial transactions. The 'list' verb confirms it is a read-only operation. Severity is low because listing media poses minimal risk even if misused by an AI agent.
From the tool's definition Tool name 'vast_list_media' and description 'List all VAST media (linear and non-linear)' both indicate a retrieval operation with no modification or deletion of data.
Attacks that exploit this kind of access
List all VAST media (linear and non-linear). It is categorised as a Read tool in the AdButler MCP Server, which means it retrieves data without modifying state.
vast_list_media 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 vast_list_media: 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.
vast_list_media 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 vast_list_media 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 vast_list_media. 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.
vast_list_media 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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