Send a map pin with GPS coordinates to a Viber user. The recipient sees an interactive map. Use when sharing a meeting point, address, or place of interest. Returns message_token for delivery tracking.
AI agents use send_location to create or update resources in Viber — usually the action step of a workflow, after the agent has gathered context. Every call changes real data in your Viber environment.
The tool writes/sends data (a location message) to a user account, which is a reversible action typical of messaging systems. It does not execute code, delete data, or move money. Severity is medium because sending unsolicited or sensitive location data to many users could constitute spam or privacy violation, but the action itself is not destructive or financial.
From the tool's definition Tool sends a message (location data) to a Viber user; description states 'Send a map pin with GPS coordinates to a Viber user' and 'Returns message_token for delivery tracking.' This is a reversible communication action that creates a new message.
Attacks that exploit this kind of access
Send a map pin with GPS coordinates to a Viber user. The recipient sees an interactive map. Use when sharing a meeting point, address, or place of interest. Returns message_token for delivery tracking. It is categorised as a Write tool in the Viber MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.
Register the Viber MCP server in PolicyLayer and add a rule for send_location: 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 Viber. Nothing to install.
send_location 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 send_location 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 send_location. 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.
send_location is provided by the Viber MCP server (serhiizghama/viber-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Every MCP server has a record like this.
Type a name, get the same breakdown: verified identity, auth posture, risk grade, capabilities, recommended policy.
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