insert_leads

THE RISK

Medium Risk

Why insert_leads needs a policy

The tool creates or adds new lead data to the system, which is a reversible write operation. While 'insert' typically implies database insertion, there is no indication this operation is destructive or irreversible—leads can presumably be modified or removed later.

From the tool's definition Tool name 'insert_leads' and description indicates it creates new lead records. The instruction 'Use this ONLY when the user asks for NEW opportunities/leads' confirms the tool writes/creates data into the prospecting system.

Documented attack patterns abuse exactly the kind of access insert_leads gives an agent:

POLICY

How to control insert_leads

PolicyLayer is an MCP gateway — it sits between your AI agents and Prospectio MCP API, and nothing reaches the server without passing your rules. This is the rule we recommend for insert_leads:

policy.json

{
  "version": "1",
  "default": "deny",
  "tools": {
    "insert_leads": {
      "limits": [
        {
          "counter": "insert_leads_rate",
          "window": "minute",
          "max": 30,
          "scope": "grant"
        }
      ]
    }
  }
}

insert_leads 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.

Create a free account and register Prospectio MCP API — nothing to install.
Add this policy — paste it, or build it visually.
Point your MCP client (Claude, Cursor, anything) at your gateway URL.

LIMIT THIS TOOL →

Free to start. No card required.

EXPLORE

Related tools and policies

More Prospectio MCP API tools

Write generate_campaign Generate prospecting messages for contacts WITHOUT existing messages as a campaign. Write upsert_profile Insert or update the user profile into the database. Read get_campaign_by_id Retrieve a specific campaign by its ID. Read get_campaign_messages Retrieve messages for a specific campaign with pagination. Read get_campaign_result Retrieve the full result of a completed campaign generation task. Read get_campaigns Retrieve all campaigns with pagination. Read get_leads ALWAYS USE THIS FIRST to retrieve existing data from the database before searching for new Read get_new_contacts Retrieve contacts that have NOT received any messages yet.

All 12 Prospectio MCP API tools →

Write tools on other servers

M-Team MCP Server download_torrent YouTube MCP Server generate_video_title Android Forensics ADB MCP Server combine_reports 0xarchive web3_signup

Go deeper

The MCP Attack Database → Documented attack patterns against MCP deployments — and the policies that stop them.
Argument validation → Checking tool call arguments against schema and policy before they run.
Scoped token → Per-person credentials that grant a defined subset of servers and tools.
Rate Limiting MCP Tool Calls: A Practical Guide →
MCP Security: Why Prompt Guardrails Aren't Enough →

FAQ

Questions about insert_leads

What does the insert_leads tool do? +

Use this ONLY when the user asks for NEW opportunities/leads or when get/leads returns insufficient data. It is categorised as a Write tool in the Prospectio MCP API MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.

How do I enforce a policy on insert_leads? +

Register the Prospectio MCP API MCP server in PolicyLayer and add a rule for insert_leads: 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 Prospectio MCP API. Nothing to install.

What risk level is insert_leads? +

insert_leads is a Write tool with medium risk. Write tools should be rate-limited to prevent accidental bulk modifications.

Can I rate-limit insert_leads? +

Yes. Add a rate_limit block to the insert_leads 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.

How do I block insert_leads completely? +

Set action: deny in the PolicyLayer policy for insert_leads. 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.

What MCP server provides insert_leads? +

insert_leads is provided by the Prospectio MCP API MCP server (prospectio-ai/prospectio-api-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.

Enforce policy on every Prospectio MCP API tool call.

Start from Prospectio MCP API, add the rest of your stack, and see everything your agents can call. Then put policy on all of it.

CHECK YOUR STACK →