sms_mark_read
A write tool on the Twilio SMS MCP server.
This record as markdown: /tools/0x-professor-twilio-mcp-server/sms-mark-read.md
What sms_mark_read does on Twilio SMS MCP Server
AI agents use sms_mark_read to create or update resources in Twilio SMS MCP Server, usually the action step of a workflow, after the agent has gathered context. Every call changes real data in your Twilio SMS MCP Server environment.
Why sms_mark_read is rated Medium
Marking a message as read modifies metadata/state reversibly without deleting data or executing external operations. This is a Write action—it changes data (read status) but remains undoable by marking it unread.
From the tool's definition Tool name 'sms_mark_read' indicates modification of message state; description is empty, limiting precision.
Attacks that exploit this kind of access
The rule that runs sms_mark_read safely
PolicyLayer is an MCP gateway: it sits between your AI agents and Twilio SMS MCP Server, and checks every tool call against a rule you set before the call runs. Nothing changes on the server itself. For sms_mark_read, this is the rule to start with:
sms_mark_read stays usable, but capped: an agent stuck in a loop can't make hundreds of changes a minute. Everything else on the server is denied unless you say otherwise.
The button opens the PolicyLayer dashboard: create your workspace, connect Twilio SMS MCP Server, apply this rule, and every sms_mark_read call is checked against it from then on.
Questions about sms_mark_read
sms_mark_read is a write tool on the Twilio SMS MCP Server MCP server. It is categorised as a Write tool in the Twilio SMS MCP Server MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.
Register the Twilio SMS MCP Server MCP server in PolicyLayer and add a rule for sms_mark_read: 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_mark_read 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 sms_mark_read 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_mark_read. 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_mark_read 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.
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