sms_cancel_scheduled

A destructive tool on the Twilio SMS MCP server.

SERVERTwilio SMS MCP Server SOURCE0x-professor/twilio-mcp-server

Critical RISK CLASS

Category Destructive

Parameters 00 required

Recommended Hiddensee the rule below

Registry record Grade F, identity unverified Pull the record →

This record as markdown: /tools/0x-professor-twilio-mcp-server/sms-cancel-scheduled.md

WHAT IT DOES

What sms_cancel_scheduled does on Twilio SMS MCP Server

AI agents call sms_cancel_scheduled to permanently remove resources in Twilio SMS MCP Server, typically in cleanup and lifecycle workflows. It does its job in a single call, and there is no undo.

RISK

Why sms_cancel_scheduled is rated Critical

Canceling a scheduled message is likely irreversible — once canceled, the scheduled send cannot be undone. The name strongly implies cancellation of a previously scheduled operation. Description is empty, which lowers confidence, but given the server context and naming convention, this is most likely a destructive/irreversible action.

From the tool's definition Tool name 'sms_cancel_scheduled' on a server that handles scheduled SMS/MMS messaging; description is empty

Attacks that exploit this kind of access

RECOMMENDED RULE

The rule that runs sms_cancel_scheduled 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_cancel_scheduled, this is the rule to start with:

sms_cancel_scheduled Hidden

sms_cancel_scheduled is removed from the agent's tool list entirely, so the agent never calls it. The rest of the server keeps working.

View as policy code

policy.json

{
  "version": "1",
  "default": "deny",
  "hide": [
    "sms_cancel_scheduled"
  ]
}

RESTRICT THIS TOOL → Instant setup, no code required.

The button opens the PolicyLayer dashboard: create your workspace, connect Twilio SMS MCP Server, apply this rule, and every sms_cancel_scheduled call is checked against it from then on.

FAQ

Questions about sms_cancel_scheduled

What does the sms_cancel_scheduled tool do? +

sms_cancel_scheduled is a destructive tool on the Twilio SMS MCP Server MCP server. It is categorised as a Destructive tool in the Twilio SMS MCP Server MCP Server, which means it can permanently delete or destroy data. Block by default and require explicit approval.

How do I enforce a policy on sms_cancel_scheduled? +

Register the Twilio SMS MCP Server MCP server in PolicyLayer and add a rule for sms_cancel_scheduled: 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.

What risk level is sms_cancel_scheduled? +

sms_cancel_scheduled is a Destructive tool with critical risk. Critical-risk tools should be blocked by default and only enabled with explicit human approval.

Can I rate-limit sms_cancel_scheduled? +

Yes. Add a rate_limit block to the sms_cancel_scheduled 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.

How do I block sms_cancel_scheduled completely? +

Set action: deny in the PolicyLayer policy for sms_cancel_scheduled. 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 sms_cancel_scheduled? +

sms_cancel_scheduled 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.

KEEP EXPLORING

More on Twilio SMS MCP Server, and thousands of servers like it.

This server

All 16 Twilio SMS MCP Server tools → Critical-risk tools on this server →

Across the catalogue

cancel_all_orders on Lighter MCP → All critical-risk MCP tools → The MCP Attack Database →

Guides

Govern database agents →Blast radius →Tool call approval →