Add one or more leads to a specific campaign with validation and duplicate checking.
AI agents use smartlead_add_leads_to_campaign to create or update resources in SmartLead MCP Server — usually the action step of a workflow, after the agent has gathered context. Every call changes real data in your SmartLead MCP Server environment.
This tool creates new lead records within a campaign, modifying campaign data. It is reversible (leads can be removed), so it is Write rather than Destructive. Severity is high because an AI agent with misuse could mass-add invalid, malicious, or unwanted leads to campaigns, degrading campaign quality, triggering unintended email sends to incorrect recipients, or poisoning lead databases.
From the tool's definition Tool name 'add_leads_to_campaign' explicitly performs creation/addition operation; description states 'Add one or more leads to a specific campaign' — a reversible data modification action.
Documented attack patterns abuse exactly the kind of access smartlead_add_leads_to_campaign gives an agent:
PolicyLayer is an MCP gateway — it sits between your AI agents and SmartLead MCP Server, and nothing reaches the server without passing your rules. This is the rule we recommend for smartlead_add_leads_to_campaign:
{
"version": "1",
"default": "deny",
"tools": {
"smartlead_add_leads_to_campaign": {
"limits": [
{
"counter": "smartlead_add_leads_to_campaign_rate",
"window": "minute",
"max": 30,
"scope": "grant"
}
]
}
}
}smartlead_add_leads_to_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.
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Add one or more leads to a specific campaign with validation and duplicate checking. It is categorised as a Write tool in the SmartLead MCP Server MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.
Register the SmartLead MCP Server MCP server in PolicyLayer and add a rule for smartlead_add_leads_to_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 SmartLead MCP Server. Nothing to install.
smartlead_add_leads_to_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 smartlead_add_leads_to_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 smartlead_add_leads_to_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.
smartlead_add_leads_to_campaign is provided by the SmartLead MCP Server MCP server (leadmagic/smartlead-mcp-server). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Start from SmartLead MCP Server, add the rest of your stack, and see everything your agents can call. Then put policy on all of it.
Free to start. No card required.
116 SmartLead MCP Server tools catalogued and risk-classified — across an index of 43,000+ MCP servers.