set_google_ads_budget
Create a new daily budget, or change an existing budget’s daily amount (pass budgetResourceName). Raising the budget on a LIVE (ENABLED) campaign increases real spend immediately — you MUST show the user the new daily amount, get an explicit yes, then call with confirm:true. Creating a budget or ...
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What set_google_ads_budget does on Hermoso
AI agents use set_google_ads_budget to commit financial operations through Hermoso, usually the final step of a payment, billing, or trading workflow. A call moves real money.
Why set_google_ads_budget is rated Critical
This tool directly controls Google Ads spending budgets. Modifying a live campaign budget has immediate financial consequences by increasing real ad spend. This is a clear Financial category tool with critical severity since an AI agent misusing it could rapidly drain advertising budgets on live campaigns with no reversibility on already-spent funds.
From the tool's definition Raising the budget on a LIVE (ENABLED) campaign increases real spend immediately
Attacks that exploit this kind of access
The rule that runs set_google_ads_budget 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 set_google_ads_budget, this is the rule to start with:
Any call to set_google_ads_budget is blocked until a human approves it. The rest of the server keeps working.
The button opens the PolicyLayer dashboard: create your workspace, connect Hermoso, apply this rule, and every set_google_ads_budget call is checked against it from then on.
Questions about set_google_ads_budget
Create a new daily budget, or change an existing budget’s daily amount (pass budgetResourceName). Raising the budget on a LIVE (ENABLED) campaign increases real spend immediately — you MUST show the user the new daily amount, get an explicit yes, then call with confirm:true. Creating a budget or lowering one on a paused campaign is safe. It is categorised as a Financial tool in the Hermoso MCP Server, which means it involves financial transactions. Block by default and require explicit approval.
Register the Hermoso MCP server in PolicyLayer and add a rule for set_google_ads_budget: 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.
set_google_ads_budget is a Financial tool with critical risk. Critical-risk tools should be blocked by default and only enabled with explicit human approval.
Yes. Add a rate_limit block to the set_google_ads_budget 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 set_google_ads_budget. 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.
set_google_ads_budget 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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