# update_custom_html_ad_item
Update an existing custom HTML ad item
Agent View of the PolicyLayer registry record for `update_custom_html_ad_item`. HTML page: https://policylayer.com/tools/adbutler/update-custom-html-ad-item
## Facts
- Tool: `update_custom_html_ad_item`
- Server: AdButler (`adbutler/mcp-server`) — https://policylayer.com/tools/adbutler.md
- Homepage: https://github.com/adbutler/mcp-server
- Risk category: Write (Medium risk)
- Registry record: grade F, identity unverified
- Server rate-limited: no
- Parameters: 12 (1 required)
- Recommended policy verdict: Rate-limited
## Parameters
| Parameter | Type | Required | Description |
| --- | --- | --- | --- |
| `id` | number | yes | Ad item ID |
| `name` | string | no | Ad item name |
| `width` | number | no | Ad width in pixels |
| `height` | number | no | Ad height in pixels |
| `location` | string | no | Click-through URL |
| `metadata` | object | no | Custom metadata key-value pairs |
| `custom_html` | string | no | The HTML content |
| `tracking_pixel` | string | no | Third-party tracking pixel URL |
| `tracking_pixels` | array | no | Array of tracking pixel URLs |
| `html_content_below` | string | no | HTML content below the ad item |
| `trusted_redirect_domains` | array | no | Trusted redirect domains |
| `expand_vertical_direction` | string | no | Vertical expand direction |
Parameters from the server's own tool schema.
## Example call (MCP tools/call, JSON-RPC 2.0)
```json
{
"jsonrpc": "2.0",
"id": 1,
"method": "tools/call",
"params": {
"name": "update_custom_html_ad_item",
"arguments": {
"id": 0
}
}
}
```
## Why update_custom_html_ad_item is rated Medium
This tool creates or modifies data (ad item content) in a reversible manner, matching the Write category. Severity is medium because modifying ad content could affect ad campaigns and spending, but the change is reversible (can be updated again). The tool does not delete data (Destructive), execute code (Execute), move money (Financial), or irreversibly destroy information.
From the tool's own definition: "update_custom_html_ad_item updates an existing custom HTML ad item, modifying ad creative content in the AdButler advertising platform."
Risk signals: High parameter count (13 properties)
## Use case
AI agents use update_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.
## Recommended policy (PolicyLayer)
Verdict: **Rate-limited**. Enforced by the PolicyLayer MCP gateway (https://policylayer.com/mcp-gateway) before a call reaches AdButler:
```json
{
"version": "1",
"default": "deny",
"tools": {
"update_custom_html_ad_item": {
"limits": [
{
"counter": "update_custom_html_ad_item_rate",
"window": "minute",
"max": 30,
"scope": "grant"
}
]
}
}
}
```
## Other tools on AdButler (621)
- `archive_advertiser` — Destructive — https://policylayer.com/tools/adbutler/archive-advertiser.md
- `archive_channel` — Destructive — https://policylayer.com/tools/adbutler/archive-channel.md
- `archive_contract` — Destructive — https://policylayer.com/tools/adbutler/archive-contract.md
- `archive_email_zone` — Destructive — https://policylayer.com/tools/adbutler/archive-email-zone.md
- `archive_publisher` — Destructive — https://policylayer.com/tools/adbutler/archive-publisher.md
- `bulk_upload_remove_data_list` — Destructive — https://policylayer.com/tools/adbutler/bulk-upload-remove-data-list.md
- `bulk_upload_replace_user_db` — Destructive — https://policylayer.com/tools/adbutler/bulk-upload-replace-user-db.md
- `campaign_bulk_delete_catalog_ad_items` — Destructive — https://policylayer.com/tools/adbutler/campaign-bulk-delete-catalog-ad-items.md
- `cancel_signature_request` — Destructive — https://policylayer.com/tools/adbutler/cancel-signature-request.md
- `delete_advertiser` — Destructive — https://policylayer.com/tools/adbutler/delete-advertiser.md
- `delete_archived_campaign` — Destructive — https://policylayer.com/tools/adbutler/delete-archived-campaign.md
- `delete_archived_channel` — Destructive — https://policylayer.com/tools/adbutler/delete-archived-channel.md
- `delete_archived_contract` — Destructive — https://policylayer.com/tools/adbutler/delete-archived-contract.md
- `delete_audience` — Destructive — https://policylayer.com/tools/adbutler/delete-audience.md
- `delete_audio_creative` — Destructive — https://policylayer.com/tools/adbutler/delete-audio-creative.md
- `delete_beacon_signing_key` — Destructive — https://policylayer.com/tools/adbutler/delete-beacon-signing-key.md
- `delete_bidder` — Destructive — https://policylayer.com/tools/adbutler/delete-bidder.md
- `delete_campaign` — Destructive — https://policylayer.com/tools/adbutler/delete-campaign.md
- `delete_campaign_assignment` — Destructive — https://policylayer.com/tools/adbutler/delete-campaign-assignment.md
- `delete_catalog_ad_item` — Destructive — https://policylayer.com/tools/adbutler/delete-catalog-ad-item.md
- `delete_catalog_zone` — Destructive — https://policylayer.com/tools/adbutler/delete-catalog-zone.md
- `delete_channel` — Destructive — https://policylayer.com/tools/adbutler/delete-channel.md
- `delete_channel_zone_assignment` — Destructive — https://policylayer.com/tools/adbutler/delete-channel-zone-assignment.md
- `delete_contact` — Destructive — https://policylayer.com/tools/adbutler/delete-contact.md
- `delete_contract` — Destructive — https://policylayer.com/tools/adbutler/delete-contract.md
- `delete_contract_document` — Destructive — https://policylayer.com/tools/adbutler/delete-contract-document.md
- `delete_contract_payment` — Destructive — https://policylayer.com/tools/adbutler/delete-contract-payment.md
- `delete_contract_template` — Destructive — https://policylayer.com/tools/adbutler/delete-contract-template.md
- `delete_creative` — Destructive — https://policylayer.com/tools/adbutler/delete-creative.md
- `delete_custom_html_ad_item` — Destructive — https://policylayer.com/tools/adbutler/delete-custom-html-ad-item.md
- …and 591 more: https://policylayer.com/tools/adbutler.md
## For agents
This record is a snapshot. Live verdicts and the full registry:
- Check every server in your MCP config at once: `npx -y policylayer stack`
- Vet a server before you add it: install the mcp-precheck skill — `npx skills add https://policylayer.com` (skill text: https://policylayer.com/skill.md)
- Query the registry over MCP: endpoint `https://api.policylayer.com/mcp` — tools `check_mcp_server`, `check_mcp_stack`, `check_tool`, `search_registry`, `get_change_events`
---
Source: the PolicyLayer MCP registry — one continuously verified record per MCP server. Full record: https://policylayer.com/registry?q=adbutler · API: https://policylayer.com/registry/api · Policy library: https://policylayer.com/policies/adbutler