create_tiktok_ads_lookalike_audience
Create a TikTok Lookalike Audience — TikTok finds people who resemble a seed audience you already have. The seed must exist, must hold AT LEAST 100 people, and cannot itself be a lookalike. audienceSize trades reach against similarity: NARROW is closest to the seed, BROAD reaches furthest. includ...
This record as markdown: /tools/hermoso/create-tiktok-ads-lookalike-audience.md
What create_tiktok_ads_lookalike_audience does on Hermoso
AI agents use create_tiktok_ads_lookalike_audience 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 create_tiktok_ads_lookalike_audience is rated Medium
An AI agent can call create_tiktok_ads_lookalike_audience 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 create_tiktok_ads_lookalike_audience 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 create_tiktok_ads_lookalike_audience, this is the rule to start with:
create_tiktok_ads_lookalike_audience 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 create_tiktok_ads_lookalike_audience call is checked against it from then on.
Questions about create_tiktok_ads_lookalike_audience
Create a TikTok Lookalike Audience — TikTok finds people who resemble a seed audience you already have. The seed must exist, must hold AT LEAST 100 people, and cannot itself be a lookalike. audienceSize trades reach against similarity: NARROW is closest to the seed, BROAD reaches furthest. includeSource has NO DEFAULT and TikTok requires it — it decides whether the seed’s own people remain inside the new audience, which matters because including them double-targets people you are already reaching. LOOKALIKE LOCATIONS ARE A SHORTER LIST THAN ORDINARY AD TARGETING (39 countries), so a location id that works on an ad group is not automatically valid here; an unsupported one is refused by name with the full list rather than sent. Takes up to 48 hours to process, and cannot be attached to a Reach & Frequency ad group. Creating one spends nothing. 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 create_tiktok_ads_lookalike_audience: 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.
create_tiktok_ads_lookalike_audience 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_tiktok_ads_lookalike_audience 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_tiktok_ads_lookalike_audience. 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_tiktok_ads_lookalike_audience 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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