upload_tiktok_ads_creative
Put a finished creative onto the TikTok AD ACCOUNT so an ad can point at it — this is the bridge between making an ad and running one, and create_tiktok_ads_ad has no other source for the ids it needs. Pass the public https url of a Hermoso render (every render already is one) or any other public...
This record as markdown: /tools/hermoso/upload-tiktok-ads-creative.md
What upload_tiktok_ads_creative does on Hermoso
AI agents use upload_tiktok_ads_creative 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_tiktok_ads_creative is rated Medium
An AI agent can call upload_tiktok_ads_creative 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_tiktok_ads_creative 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_tiktok_ads_creative, this is the rule to start with:
upload_tiktok_ads_creative 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_tiktok_ads_creative call is checked against it from then on.
Questions about upload_tiktok_ads_creative
Put a finished creative onto the TikTok AD ACCOUNT so an ad can point at it — this is the bridge between making an ad and running one, and create_tiktok_ads_ad has no other source for the ids it needs. Pass the public https url of a Hermoso render (every render already is one) or any other public https file; TikTok fetches it from its own servers, so a local path, a data: url or anything on http:// is refused here for free. A VIDEO UPLOAD ALSO UPLOADS ITS OWN COVER and hands back coverImageId — pass that straight to create_tiktok_ads_ad as imageIds, because TikTok requires a cover on a video ad and rejects any whose dimensions differ from the video. CHECK usableInAds BEFORE BUILDING THE AD: TikTok happily accepts a creative it will then refuse to build an ad from, and says so only in this flag — a 720x1280 render is fine and a 496x864 one is not, so a false here means re-render larger, and the note says so. Uploading the same file twice is fine; TikTok refuses a repeated file NAME, so leave fileName out unless you want a specific label in TikTok Ads Manager. Free — TikTok charges nothing for storage and Hermoso bills no credits for this. 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_tiktok_ads_creative: 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_tiktok_ads_creative 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_tiktok_ads_creative 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_tiktok_ads_creative. 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_tiktok_ads_creative 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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