Fetch account balance, status, and friendly name.
AI agents call sms_account_info to retrieve information from Twilio SMS MCP Server without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This tool queries account information without side effects. While it exposes sensitive data (balance, status), the action itself is non-destructive read-only retrieval. Severity is low because viewing account info poses minimal direct risk; the blast radius is limited to information disclosure rather than unauthorized actions or financial harm.
From the tool's definition Tool name 'sms_account_info' and description 'Fetch account balance, status, and friendly name' indicate read-only retrieval of account metadata. No modification, deletion, or financial transaction occurs—it merely retrieves existing data.
Attacks that exploit this kind of access
Fetch account balance, status, and friendly name. It is categorised as a Read tool in the Twilio SMS MCP Server MCP Server, which means it retrieves data without modifying state.
Register the Twilio SMS MCP Server MCP server in PolicyLayer and add a rule for sms_account_info: 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 Twilio SMS MCP Server. Nothing to install.
sms_account_info is a Read tool with low risk. Read-only tools are generally safe to allow by default.
Yes. Add a rate_limit block to the sms_account_info 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 sms_account_info. 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.
sms_account_info is provided by the Twilio SMS MCP Server MCP server (0x-professor/twilio-mcp-server). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
sms_account_info is one line of Twilio SMS MCP Server's registry record.
The record carries the whole server: verified identity, auth posture, risk grade, every tool classified, recommended policy — re-checked continuously.
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