This record as markdown: /tools/adbutler/vast42-get-media-file.md
What vast42_get_media_file does on AdButler
AI agents call vast42_get_media_file to retrieve information from AdButler without modifying anything. It is typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
| Parameter | Type | Required | Description |
|---|---|---|---|
id | number | Yes | VAST 4.2 media file ID |
Parameters from the server's own tool schema.
Why vast42_get_media_file is rated Low
This tool retrieves a single media file from the AdButler system with no indication of side effects, modification, deletion, or external state changes. It is a straightforward read operation with minimal blast radius if misused by an AI agent.
From the tool's definition Tool name includes 'get' and description states 'Get a single VAST 4.2 media file' — both indicate retrieval without modification.
Attacks that exploit this kind of access
The rule that runs vast42_get_media_file safely
PolicyLayer is an MCP gateway: it sits between your AI agents and AdButler, and checks every tool call against a rule you set before the call runs. Nothing changes on the server itself. For vast42_get_media_file, this is the rule to start with:
vast42_get_media_file is read-only, so it stays allowed. Everything else on the server is denied unless you say otherwise.
The button opens the PolicyLayer dashboard: create your workspace, connect AdButler, apply this rule, and every vast42_get_media_file call is checked against it from then on.
Questions about vast42_get_media_file
Get a single VAST 4.2 media file. It is categorised as a Read tool in the AdButler MCP Server, which means it retrieves data without modifying state.
vast42_get_media_file accepts 1 parameter: id. Required: id. 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_get_media_file: 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_get_media_file 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_get_media_file 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_get_media_file. 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_get_media_file 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.
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