update_reddit_ads_campaign
Change an existing Reddit campaign’s name, spend cap, budget, goal type or flight dates. Amounts are ordinary numbers in the ad account’s currency. The OBJECTIVE and useCatalog cannot be changed: Reddit freezes both at creation and refuses a change even from an old objective name to its new one (...
This record as markdown: /tools/hermoso/update-reddit-ads-campaign.md
What update_reddit_ads_campaign does on Hermoso
AI agents use update_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 update_reddit_ads_campaign is rated Medium
An AI agent can call update_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.
Attacks that exploit this kind of access
The rule that runs update_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 update_reddit_ads_campaign, this is the rule to start with:
update_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 update_reddit_ads_campaign call is checked against it from then on.
Questions about update_reddit_ads_campaign
Change an existing Reddit campaign’s name, spend cap, budget, goal type or flight dates. Amounts are ordinary numbers in the ad account’s currency. The OBJECTIVE and useCatalog cannot be changed: Reddit freezes both at creation and refuses a change even from an old objective name to its new one (IMPRESSIONS to BRAND_AWARENESS), so create a new campaign instead. This does NOT activate, pause or archive anything — use set_reddit_ads_status for that. The result is read back from Reddit before you are told it took. 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 update_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.
update_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 update_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 update_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.
update_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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