AI agents use vast42_update_linear to create or update resources in AdButler — usually the action step of a workflow, after the agent has gathered context. Every call changes real data in your AdButler environment.
| Parameter | Type | Required | Description |
|---|---|---|---|
id | number | Yes | VAST 4.2 linear media ID |
name | string | — | Linear media name |
bitrate | number | — | Bitrate in kbps |
duration | number | — | Duration in seconds |
mime_type | string | — | MIME type (e.g. video/mp4) |
Parameters from the server's own tool schema.
This tool modifies existing VAST 4.2 media configuration, which is reversible (can be updated again or reverted). It does not delete data (would be Destructive) or execute arbitrary code (would be Execute). The blast radius is medium because incorrect updates could affect ad serving and revenue, but changes are recoverable. Not Financial as it does not move money or create financial obligations.
From the tool's definition Tool name contains 'update' and description states 'Update a VAST 4.2 linear media', indicating modification of existing ad configuration data.
Attacks that exploit this kind of access
Update a VAST 4.2 linear media. It is categorised as a Write tool in the AdButler MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.
vast42_update_linear accepts 5 parameters: id, name, bitrate, duration, mime_type. 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_update_linear: 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_update_linear is a Write tool with medium risk. Write tools should be rate-limited to prevent accidental bulk modifications.
Yes. Add a rate_limit block to the vast42_update_linear 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_update_linear. 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_update_linear 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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