create_reddit_ads_campaign
Create the top tier of a Reddit ad — the campaign, which sets the OBJECTIVE everything under it optimises toward and (optionally) a lifetime spend cap. ALWAYS created PAUSED, with no override; it spends nothing until set_reddit_ads_status(confirm:true). Pick the objective deliberately, because th...
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What create_reddit_ads_campaign does on Hermoso
AI agents use create_reddit_ads_campaign 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_reddit_ads_campaign is rated Medium
An AI agent can call create_reddit_ads_campaign 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.
Risk signalsBulk/mass operation — affects multiple targets
Attacks that exploit this kind of access
The rule that runs create_reddit_ads_campaign 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_reddit_ads_campaign, this is the rule to start with:
create_reddit_ads_campaign 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_reddit_ads_campaign call is checked against it from then on.
Questions about create_reddit_ads_campaign
Create the top tier of a Reddit ad — the campaign, which sets the OBJECTIVE everything under it optimises toward and (optionally) a lifetime spend cap. ALWAYS created PAUSED, with no override; it spends nothing until set_reddit_ads_status(confirm:true). Pick the objective deliberately, because the ad group\u2019s bid type has to match it and it cannot be changed afterwards: CLICKS is Reddit\u2019s name for traffic to a website (there is no TRAFFIC), CONVERSIONS optimises toward pixel events and needs a working pixel, LEAD_GENERATION optimises toward LEAD / SIGN_UP pixel events (Reddit retired onsite lead forms), IMPRESSIONS and VIDEO_VIEWABLE_IMPRESSIONS buy reach, APP_INSTALLS and CATALOG_SALES are for apps and product feeds. Reddit\u2019s NEW names (since 2026-09-21) are accepted too: BRAND_AWARENESS (= IMPRESSIONS / VIDEO_VIEWABLE_IMPRESSIONS) and SALES (= CONVERSIONS, or CATALOG_SALES when useCatalog is true); Reddit rolls them out per account, so an account without them yet answers with Reddit\u2019s own refusal \u2014 use the legacy name then. A campaign on its own can never serve: create an ad group under it, then an ad pointing at a post. The result is read back from Reddit. 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_reddit_ads_campaign: 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_reddit_ads_campaign 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_reddit_ads_campaign 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_reddit_ads_campaign. 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_reddit_ads_campaign 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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