AI agents use create_lead to create or update resources in EspoCRM-MCP — usually the action step of a workflow, after the agent has gathered context. Every call changes real data in your EspoCRM-MCP environment.
This tool creates new lead records in the CRM, which is a reversible write operation. The severity is medium because creating leads can populate the system with data and trigger downstream workflows, but the operation is not destructive and does not inherently move money or execute arbitrary code.
From the tool's definition Tool name 'create_lead' and description 'Create a new lead with full field support' indicate data creation in EspoCRM CRM system.
Documented attack patterns abuse exactly the kind of access create_lead gives an agent:
PolicyLayer is an MCP gateway — it sits between your AI agents and EspoCRM-MCP, and nothing reaches the server without passing your rules. This is the rule we recommend for create_lead:
{
"version": "1",
"default": "deny",
"tools": {
"create_lead": {
"limits": [
{
"counter": "create_lead_rate",
"window": "minute",
"max": 30,
"scope": "grant"
}
]
}
}
}create_lead 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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Create a new lead with full field support. It is categorised as a Write tool in the EspoCRM-MCP MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.
Register the EspoCRM- MCP server in PolicyLayer and add a rule for create_lead: 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 EspoCRM-MCP. Nothing to install.
create_lead 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 create_lead 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 create_lead. 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.
create_lead is provided by the EspoCRM- MCP server (zaphod-black/espomcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Deterministic rules across all 46 EspoCRM-MCP tools. Per-identity grants. Full audit log. Live in minutes. Nothing to install.
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46 EspoCRM-MCP tools catalogued and risk-classified — across an index of 42,500+ MCP servers.