AI agents use create_custom_html_ad_item 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 |
|---|---|---|---|
name | string | Yes | Ad item name |
width | number | — | Ad width in pixels (0 for flexible) |
height | number | — | Ad height in pixels (0 for flexible) |
location | string | — | Click-through URL |
metadata | object | — | Custom metadata key-value pairs |
custom_html | string | Yes | The HTML content of the ad item |
tracking_pixel | string | — | Third-party tracking pixel URL |
tracking_pixels | array | — | Array of tracking pixel URLs |
html_content_below | string | — | HTML content below the ad item |
trusted_redirect_domains | array | — | Trusted redirect domains |
expand_vertical_direction | string | — | Vertical expand direction |
expand_horizontal_direction | string | — | Horizontal expand direction |
Parameters from the server's own tool schema.
This tool creates new ad items in the AdButler advertising platform. It modifies the platform's data store by adding a new resource, which is a Write operation. The severity is medium because misuse could result in creation of malicious or policy-violating ad content, affecting user experience and brand safety, but the action is reversible through deletion/archiving mechanisms.
From the tool's definition Tool name 'create_custom_html_ad_item' and description 'Create a new custom HTML ad item' explicitly indicate creation of new advertising content.
Risk signalsHigh parameter count (12 properties)
Attacks that exploit this kind of access
Create a new custom HTML ad item. 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.
create_custom_html_ad_item accepts 12 parameters: name, width, height, location, metadata, custom_html, tracking_pixel, tracking_pixels, html_content_below, trusted_redirect_domains, expand_vertical_direction, expand_horizontal_direction. Required: name, custom_html. 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 create_custom_html_ad_item: 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.
create_custom_html_ad_item 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 create_custom_html_ad_item 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 create_custom_html_ad_item. 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.
create_custom_html_ad_item 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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