upload_apple_ads_asset
Upload an image into the Apple Ads asset library for an APPLE MAPS brand creative. APPLE MAPS ONLY, and that is Apple’s rule rather than ours: it refuses uploads for App Store apps outright, because an App Store ad is rendered from the app’s product page in App Store Connect and not from an image...
This record as markdown: /tools/hermoso/upload-apple-ads-asset.md
What upload_apple_ads_asset does on Hermoso
AI agents use upload_apple_ads_asset to create or update resources in Hermoso, usually the action step of a workflow, after the agent has gathered context. Every call changes real data in your Hermoso environment.
Why upload_apple_ads_asset is rated Medium
An AI agent can call upload_apple_ads_asset faster than any human can review: one bad instruction and it creates or modifies resources in Hermoso by the hundred, each call as confident as the last.
Attacks that exploit this kind of access
The rule that runs upload_apple_ads_asset safely
PolicyLayer is an MCP gateway: it sits between your AI agents and Hermoso, and checks every tool call against a rule you set before the call runs. Nothing changes on the server itself. For upload_apple_ads_asset, this is the rule to start with:
upload_apple_ads_asset stays usable, but capped: an agent stuck in a loop can't make hundreds of changes a minute. Everything else on the server is denied unless you say otherwise.
The button opens the PolicyLayer dashboard: create your workspace, connect Hermoso, apply this rule, and every upload_apple_ads_asset call is checked against it from then on.
Questions about upload_apple_ads_asset
Upload an image into the Apple Ads asset library for an APPLE MAPS brand creative. APPLE MAPS ONLY, and that is Apple’s rule rather than ours: it refuses uploads for App Store apps outright, because an App Store ad is rendered from the app’s product page in App Store Connect and not from an image anyone uploads. That refusal is stated up front instead of being sent and rejected, so if you want a different-looking App Store ad the answer is App Store Connect, not this tool. PNG, JPG or HEIC. Pass imageUrl (upload_file turns a local file into one) and brandId, which list_apple_ads_brands returns. Apple processes the upload asynchronously, so re-read it with list_apple_ads_assets until its eligibility says it is ready before referencing it in a creative. Uploading spends nothing. Free. It is categorised as a Write tool in the Hermoso MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.
Register the Hermoso MCP server in PolicyLayer and add a rule for upload_apple_ads_asset: 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 Hermoso. Nothing to install.
upload_apple_ads_asset 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 upload_apple_ads_asset 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 upload_apple_ads_asset. 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.
upload_apple_ads_asset is provided by the Hermoso MCP server (https://app.hermoso.ai/mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
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