Add zones to campaign blacklist.
AI agents use add_to_blacklist to create or update resources in PropellerAds MCP Server — usually the action step of a workflow, after the agent has gathered context. Every call changes real data in your PropellerAds MCP Server environment.
This tool creates or modifies campaign data (the blacklist) in a reversible manner. While it affects ad delivery, it does not delete data, execute arbitrary code, or move money. The modification is reversible (zones can be removed from blacklist). Severity is medium because misuse could degrade ad campaign performance, but it does not result in permanent data loss or financial impact.
From the tool's definition Tool description states 'Add zones to campaign blacklist' - this modifies campaign settings by adding entries to a blacklist, which is a write operation that changes campaign configuration.
Attacks that exploit this kind of access
Add zones to campaign blacklist. It is categorised as a Write tool in the PropellerAds MCP Server MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.
Register the PropellerAds MCP Server MCP server in PolicyLayer and add a rule for add_to_blacklist: 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 PropellerAds MCP Server. Nothing to install.
add_to_blacklist 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 add_to_blacklist 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 add_to_blacklist. 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.
add_to_blacklist is provided by the PropellerAds MCP Server MCP server (jannafta/propellerads-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
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