phone.telnyx.sms_premium

SERVERApibase SOURCEapibase-mcp-client

Critical RISK CLASS

Category Financial

Parameters 43 required

Recommended Approval-gatedsee the rule below

Registry record Grade F, identity unverified Pull the record →

This record as markdown: /tools/io-github-whiteknightonhorse-apibase/phone.telnyx.sms-premium.md

WHAT IT DOES

What phone.telnyx.sms_premium does on Apibase

AI agents use phone.telnyx.sms_premium to commit financial operations through Apibase, usually the final step of a payment, billing, or trading workflow. A call moves real money.

Parameter	Type	Required	Description
`to`	string	Yes	Recipient phone number in E.164 format (e.g. "+14155551234"). Trial accounts can only send to verified destination numbers added in the Telnyx portal.
`from`	string	Yes	Sender phone number in E.164 format — must be a Telnyx number you own (e.g. "+15551234567"). Provision via Telnyx portal Numbers > Buy Numbers.
`text`	string	Yes	SMS body text (max 1600 chars; >160 splits into multiple billing segments).
`messaging_profile_id`	string	—	Optional Telnyx messaging profile UUID to route through a specific profile (10DLC campaign, sender pool).

Parameters from the server's own tool schema.

RISK

Why phone.telnyx.sms_premium is rated Critical

Each call incurs direct financial charges, making misuse financially damaging.

From the tool's definition Send SMS to high-cost destinations, $0.25/message, financial commitment

Attacks that exploit this kind of access

RECOMMENDED RULE

The rule that runs phone.telnyx.sms_premium safely

PolicyLayer is an MCP gateway: it sits between your AI agents and Apibase, and checks every tool call against a rule you set before the call runs. Nothing changes on the server itself. For phone.telnyx.sms_premium, this is the rule to start with:

phone.telnyx.sms_premium Approval-gated

Any call to phone.telnyx.sms_premium is blocked until a human approves it. The rest of the server keeps working.

View as policy code

policy.json

{
  "version": "1",
  "default": "deny",
  "tools": {
    "phone.telnyx.sms_premium": {
      "deny_if": [
        {
          "conditions": [],
          "on_deny": "Requires human approval."
        }
      ]
    }
  }
}

GATE THIS TOOL → Instant setup, no code required.

The button opens the PolicyLayer dashboard: create your workspace, connect Apibase, apply this rule, and every phone.telnyx.sms_premium call is checked against it from then on.

FAQ

Questions about phone.telnyx.sms_premium

What does the phone.telnyx.sms_premium tool do? +

⚡ ACTION: Send SMS to high-cost destinations: Russia +7, Belarus +375, Ukraine +380, China +86, Turkey +90, MENA (SA/AE/EG/JO/...), Africa (NG/KE/ZA/...), and any unknown prefix (default). $0.25/message. Highest tier — use telnyx.estimate_price to verify before sending (Telnyx). It is categorised as a Financial tool in the Apibase MCP Server, which means it involves financial transactions. Block by default and require explicit approval.

What parameters does phone.telnyx.sms_premium accept? +

phone.telnyx.sms_premium accepts 4 parameters: to, from, text, messaging_profile_id. Required: to, from, text. The full parameter table on this page comes from the server's own tool schema.

How do I enforce a policy on phone.telnyx.sms_premium? +

Register the Apibase MCP server in PolicyLayer and add a rule for phone.telnyx.sms_premium: 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 Apibase. Nothing to install.

What risk level is phone.telnyx.sms_premium? +

phone.telnyx.sms_premium is a Financial tool with critical risk. Critical-risk tools should be blocked by default and only enabled with explicit human approval.

Can I rate-limit phone.telnyx.sms_premium? +

Yes. Add a rate_limit block to the phone.telnyx.sms_premium 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 phone.telnyx.sms_premium completely? +

Set action: deny in the PolicyLayer policy for phone.telnyx.sms_premium. 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 phone.telnyx.sms_premium? +

phone.telnyx.sms_premium is provided by the Apibase MCP server (apibase-mcp-client). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.

KEEP EXPLORING

More on Apibase, and thousands of servers like it.

This server

All 1384 Apibase tools → Critical-risk tools on this server →

Across the catalogue

All critical-risk MCP tools → The MCP Attack Database →

Guides

Govern MCP payment tools →Human-in-the-loop →Tool call approval →