wa_create_instance
Create a new WhatsApp instance. Specify a name and channel type (baileys for WhatsApp Web protocol, cloud for Meta Cloud API).
This record as markdown: /tools/delltrak-wamcp/wa-create-instance.md
What wa_create_instance does on WA MCP
AI agents use wa_create_instance to create or update resources in WA MCP, usually the action step of a workflow, after the agent has gathered context. Every call changes real data in your WA MCP environment.
Why wa_create_instance is rated Medium
This tool creates a new resource (a WhatsApp instance/connection), which is a reversible write operation. It does not delete data, execute code, or move money. A sibling tool 'wa_delete_instance' suggests instances can be deleted, confirming creation is reversible. Misuse could result in unauthorized WhatsApp instances being provisioned, hence medium severity.
From the tool's definition Create a new WhatsApp instance. Specify a name and channel type (baileys for WhatsApp Web protocol, cloud for Meta Cloud API).
Attacks that exploit this kind of access
The rule that runs wa_create_instance safely
PolicyLayer is an MCP gateway: it sits between your AI agents and WA MCP, and checks every tool call against a rule you set before the call runs. Nothing changes on the server itself. For wa_create_instance, this is the rule to start with:
wa_create_instance 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.
The button opens the PolicyLayer dashboard: create your workspace, connect WA MCP, apply this rule, and every wa_create_instance call is checked against it from then on.
Questions about wa_create_instance
Create a new WhatsApp instance. Specify a name and channel type (baileys for WhatsApp Web protocol, cloud for Meta Cloud API). It is categorised as a Write tool in the WA MCP MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.
Register the WA MCP server in PolicyLayer and add a rule for wa_create_instance: 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 WA MCP. Nothing to install.
wa_create_instance 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 wa_create_instance 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 wa_create_instance. 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.
wa_create_instance is provided by the WA MCP server (delltrak/wamcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
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