rcs-send-text

Send a text message via RCS using Vonage Messages API

Part of the Vonage Mcp Server Api Bindings MCP server. Enforce policies on this tool with Intercept, the open-source MCP proxy.

@vonage/vonage-mcp-server-api-bindings Write Risk 2/5

// WHEN AI AGENTS USE THIS TOOL

AI agents use rcs-send-text to create or modify resources in Vonage Mcp Server Api Bindings. 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 RCS-SEND-TEXT

Without a policy, an AI agent could call rcs-send-text 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 Vonage Mcp Server Api Bindings.

// RECOMMENDED POLICY

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

vonage-mcp-server-api-bindings.yaml

tools:
  rcs-send-text:
    rules:
      - action: allow
        rate_limit:
          max: 30
          window: 60

See the full Vonage Mcp Server Api Bindings policy for all 13 tools.

// DETAILS

Tool Name rcs-send-text

Category Write

MCP Server Vonage Mcp Server Api Bindings MCP Server

Risk Level Medium

// MORE VONAGE MCP SERVER API BINDINGS TOOLS

Write create-application Write link-number-to-vonage-application Write outbound-voice-message Write rcs-send-text-with-sms-failover Write SMS Write whatsapp-send-text Write whatsapp-send-text-with-sms-failover Read balance

View all 13 tools →

// WHAT CAN GO WRONG

Agents calling write-class tools like rcs-send-text 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 rcs-send-text tool do? +

Send a text message via RCS using Vonage Messages API. It is categorised as a Write tool in the Vonage Mcp Server Api Bindings MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.

How do I enforce a policy on rcs-send-text? +

Add a rule in your Intercept YAML policy under the tools section for rcs-send-text. You can allow, deny, rate-limit, or validate arguments. Then run Intercept as a proxy in front of the Vonage Mcp Server Api Bindings MCP server.

What risk level is rcs-send-text? +

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

Can I rate-limit rcs-send-text? +

Yes. Add a rate_limit block to the rcs-send-text 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 rcs-send-text completely? +

Set action: deny in the Intercept policy for rcs-send-text. 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 rcs-send-text? +

rcs-send-text is provided by the Vonage Mcp Server Api Bindings MCP server (@vonage/vonage-mcp-server-api-bindings). Intercept sits as a proxy in front of this server to enforce policies before tool calls reach the server.

rcs-send-text

Enforce policies on Vonage Mcp Server Api Bindings