Send a WhatsApp Business template message (for outbound messaging outside the 24h window)
Part of the ManyContacts - WhatsApp Business CRM server.
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AI agents use manycontacts.messages.send.template to create or modify resources in ManyContacts - WhatsApp Business CRM. Write operations carry medium risk because an autonomous agent could trigger bulk unintended modifications. Rate limits prevent a single agent session from making hundreds of changes in rapid succession. Argument validation ensures the agent passes expected values.
Without a policy, an AI agent could call manycontacts.messages.send.template repeatedly, creating or modifying resources faster than any human could review. PolicyLayer's rate limiting ensures write operations happen at a controlled pace, and argument validation catches malformed or unexpected inputs before they reach ManyContacts - WhatsApp Business CRM.
Write tools can modify data. A rate limit prevents runaway bulk operations from AI agents.
{
"version": "1",
"default": "deny",
"tools": {
"manycontacts.messages.send.template": {
"limits": [
{
"counter": "manycontacts.messages.send.template_rate",
"window": "minute",
"max": 30,
"scope": "grant"
}
]
}
}
}See the full ManyContacts - WhatsApp Business CRM policy for all 55 tools.
These attack patterns abuse exactly the kind of access manycontacts.messages.send.template gives an agent. Each links to the full case and the policy that stops it:
Other write tools across the catalogue. The same approach applies to each: rate-limit and validate the arguments.
Send a WhatsApp Business template message (for outbound messaging outside the 24h window). It is categorised as a Write tool in the ManyContacts - WhatsApp Business CRM MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.
Register the ManyContacts - WhatsApp Business CRM MCP server in PolicyLayer and add a rule for manycontacts.messages.send.template: 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 ManyContacts - WhatsApp Business CRM. Nothing to install.
manycontacts.messages.send.template 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 manycontacts.messages.send.template 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 manycontacts.messages.send.template. 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.
manycontacts.messages.send.template is provided by the ManyContacts - WhatsApp Business CRM MCP server (@manycontacts/mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Deterministic rules across all 55 ManyContacts - WhatsApp Business CRM tools. Per-identity grants. Full audit log. Live in minutes. Nothing to install.
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