Change the daily budget of a Meta campaign. Takes effect immediately. Increase to scale a winning campaign, decrease to throttle spend. Minimum $1/day. Requires Starter plan or higher.
AI agents use update_meta_campaign_budget to commit financial operations through Agent1st Ads — usually the final step of a payment, billing, or trading workflow. A call moves real money.
Modifying an ad campaign's daily budget directly controls how much money is spent on advertising. Changing the budget 'immediately' commits real financial spend on Meta's platform. This falls squarely in the Financial category as it directly governs monetary outflows. Misuse by an AI agent could cause significant overspend or unintended budget increases, warranting high severity.
From the tool's definition 'Change the daily budget of a Meta campaign. Takes effect immediately. Increase to scale a winning campaign, decrease to throttle spend.'
Attacks that exploit this kind of access
Change the daily budget of a Meta campaign. Takes effect immediately. Increase to scale a winning campaign, decrease to throttle spend. Minimum $1/day. Requires Starter plan or higher. It is categorised as a Financial tool in the Agent1st Ads MCP Server, which means it involves financial transactions. Block by default and require explicit approval.
Register the Agent1st Ads MCP server in PolicyLayer and add a rule for update_meta_campaign_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 Agent1st Ads. Nothing to install.
update_meta_campaign_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 update_meta_campaign_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 update_meta_campaign_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.
update_meta_campaign_budget is provided by the Agent1st Ads MCP server (nolas-shadow/agent1st-ads-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Every MCP server has a record like this.
Type a name, get the same breakdown: verified identity, auth posture, risk grade, capabilities, recommended policy.
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