whatsapp_send_contact

Send a contact card to a WhatsApp contact or group.

Part of the WhatsApp Web Server MCP server. Enforce policies on this tool with Intercept, the open-source MCP proxy.

samihalawa/whatsapp-go-mcp Write Risk 2/5

// WHEN AI AGENTS USE THIS TOOL

AI agents use whatsapp_send_contact to create or modify resources in WhatsApp Web Server. 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.

// WHY ENFORCE A POLICY ON WHATSAPP_SEND_CONTACT

Without a policy, an AI agent could call whatsapp_send_contact repeatedly, creating or modifying resources faster than any human could review. Intercept's rate limiting ensures write operations happen at a controlled pace, and argument validation catches malformed or unexpected inputs before they reach WhatsApp Web Server.

// RECOMMENDED POLICY

Write tools can modify data. A rate limit prevents runaway bulk operations from AI agents.

samihalawa-whatsapp-go-mcp.yaml

tools:
  whatsapp_send_contact:
    rules:
      - action: allow
        rate_limit:
          max: 30
          window: 60

See the full WhatsApp Web Server policy for all 5 tools.

// DETAILS

Tool Name whatsapp_send_contact

Category Write

MCP Server WhatsApp Web Server MCP Server

Risk Level Medium

// MORE WHATSAPP WEB SERVER TOOLS

Write whatsapp_send_image Write whatsapp_send_link Write whatsapp_send_location Write whatsapp_send_text

// WHAT CAN GO WRONG

Agents calling write-class tools like whatsapp_send_contact have been implicated in these attack patterns. Read the full case and prevention policy for each:

Browse the full MCP Attack Database →

// OTHER WRITE TOOLS ACROSS MCP SERVERS

Other tools in the Write risk category across the catalogue. The same policy patterns (rate-limit, validate) apply to each.

AbraFlexi contact_create AbraFlexi contact_update AbraFlexi evidence_create AbraFlexi evidence_update AbraFlexi invoice_issued_update AbraFlexi invoice_received_create

// RELATED READING

// FAQ

What does the whatsapp_send_contact tool do? +

Send a contact card to a WhatsApp contact or group.. It is categorised as a Write tool in the WhatsApp Web Server MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.

How do I enforce a policy on whatsapp_send_contact? +

Add a rule in your Intercept YAML policy under the tools section for whatsapp_send_contact. You can allow, deny, rate-limit, or validate arguments. Then run Intercept as a proxy in front of the WhatsApp Web Server MCP server.

What risk level is whatsapp_send_contact? +

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

Can I rate-limit whatsapp_send_contact? +

Yes. Add a rate_limit block to the whatsapp_send_contact rule in your Intercept 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 whatsapp_send_contact completely? +

Set action: deny in the Intercept policy for whatsapp_send_contact. 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 whatsapp_send_contact? +

whatsapp_send_contact is provided by the WhatsApp Web Server MCP server (samihalawa/whatsapp-go-mcp). Intercept sits as a proxy in front of this server to enforce policies before tool calls reach the server.

whatsapp_send_contact

Enforce policies on WhatsApp Web Server