Get details of an SMS message by its ID.
AI agents call get_sms to retrieve information from Unosend MCP Server without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This is a read-only operation that queries SMS message details without modifying, deleting, executing code, or affecting financial systems. The blast radius of misuse is minimal—an attacker could retrieve message metadata they may not be authorized to see, but cannot send messages, delete them, or cause other damage through this tool alone.
From the tool's definition Tool name 'get_sms' and description 'Get details of an SMS message by its ID' indicate a retrieval operation with no side effects. The action is to fetch and display existing SMS message data.
Attacks that exploit this kind of access
Get details of an SMS message by its ID. It is categorised as a Read tool in the Unosend MCP Server MCP Server, which means it retrieves data without modifying state.
Register the Unosend MCP Server MCP server in PolicyLayer and add a rule for get_sms: 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 Unosend MCP Server. Nothing to install.
get_sms 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 get_sms 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 get_sms. 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.
get_sms is provided by the Unosend MCP Server MCP server (unosend/mcp-server). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
get_sms is one line of Unosend 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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