What is an MCP server?

MCP (Model Context Protocol) is an open standard from Anthropic that lets AI agents call external tools securely. An MCP server exposes a set of tools — like send_sms or get_inbox — that any MCP-compatible AI client (Claude, ChatGPT, Cursor, Windsurf, Gemini) can call over HTTP.

Does Texto work with ChatGPT?

Yes. Add Texto's MCP server as a custom connector in ChatGPT's Developer mode or build a GPT against it with the Apps SDK. Your GPT can then send SMS, check delivery, read replies, and validate compliance on behalf of the user.

Does Texto work with Claude Desktop and Claude Code?

Yes. Add the Texto MCP server to your Claude config file with your API key as a Bearer token, restart Claude, and the 11 SMS tools become available in any conversation.

Does Texto work with Cursor, Windsurf and Gemini?

Yes. All three support remote MCP servers. Drop the Texto config into Cursor's mcp.json, Windsurf's mcp_config.json, or Gemini CLI's settings.json and the agent gains full SMS capability.

How much does it cost to send SMS from an AI agent?

Three cents (AUD) per SMS — the same rate as the rest of Texto. There's no MCP fee, no monthly minimum, and no per-tool-call charge. The first 5 messages are free on signup.

Can AI agents send SMS to Australian mobile numbers?

Yes — Texto is built for Australian mobile delivery via licensed AU carriers. Messages route through AWS Sydney and reach any AU mobile (04xx) number. International sending is not supported.

Is sending SMS from an AI agent ACMA-compliant?

It can be. Texto provides a check_compliance tool that validates messages against the Spam Act 2003 before sending, automatically processes STOP replies, and exposes the opt-out list via get_optouts. Your agent has everything it needs to stay compliant.

How do I stop an AI agent from sending spam?

Use the preview_cost and check_compliance tools before any send. Set per-send recipient caps in your prompt, and use needsApproval-style confirmation in your agent framework for batches above a threshold. All sends are logged in your Texto inbox for audit.

What's the difference between Texto's MCP server and REST API?

Same backend, different transport. The REST API is best for code you control (CRMs, backends, scripts). The MCP server is best for AI agents — it advertises typed tools the LLM can pick from, handles auth via a Bearer header, and supports streaming responses.

Can I use Texto's MCP server with OpenClaw skills?

Yes. The texto-sms OpenClaw skill packages Australian SMS compliance rules, cost optimisation logic, and Texto API knowledge so any OpenClaw-compatible agent picks it up automatically. Install with: openclaw skills install https://texto.com.au/texto-sms-skill.md

MCP Server · AI Agents

MCP Server for SMS

Send text messages from Claude, ChatGPT, Cursor, Windsurf, Gemini, Lovable and any MCP-compatible AI agent — for 3¢ per SMS to Australia.

Get your API key View the 11 MCP tools

Endpoint: https://mcp.texto.com.au

What is an SMS MCP Server?

Model Context Protocol (MCP) is an open standard, originally proposed by Anthropic, that lets AI agents call external tools and services in a consistent way. Think of it as a USB-C port for AI: one protocol, many tools, no custom glue per client.

An MCP server exposes a set of typed tools — and Texto's exposes 11 of them, all built for Australian SMS. Any MCP-compatible client (Claude, ChatGPT, Cursor, Windsurf, Gemini, Lovable, custom agents built on the AI SDK or OpenClaw) can connect to https://mcp.texto.com.au, authenticate with a Bearer token, and start sending SMS in seconds.

Texto is one of the few SMS providers in Australia with a production MCP server. That means your AI agent can send compliant text messages, read replies, manage opt-outs, and optimise costs — without you writing a single line of integration code.

What can an AI agent do with Texto?

Hand your agent an API key and it handles the rest — from drafting compliant messages to optimising costs across thousands of recipients.

Send appointment reminders

Your AI agent checks your client list, picks the right send time based on the appointment, drafts a personalised reminder, checks it's compliant, and sends it — no clicks from you.

Checks opt-out list before sending
Picks send time based on appointment window
Keeps message under 160 chars to save credits

Run a promotional campaign

Hand your agent a spreadsheet and a campaign brief. It validates every number, removes opted-out contacts, calculates the credit cost, and batch-sends personalised messages with merge fields.

Validates AU mobile numbers
Skips opted-out recipients automatically
Uses {{name}} merge fields

Monitor replies and opt-outs

The agent reads your inbox, flags STOP requests, surfaces urgent replies like 'cancel my booking', and routes them anywhere — Slack, email, your CRM.

Reads inbound messages
Detects STOP / opt-out keywords
Flags urgent replies for review

Draft compliant SMS copy

Ask the agent to write a message and it auto-checks against ACMA Spam Act rules, avoids spam trigger words, adds the opt-out footer, and keeps it under 160 chars.

Follows ACMA Spam Act 2003 rules
Avoids spam trigger words & ALL CAPS
Adds opt-out footer when required

Optimise SMS spend

Before sending, the agent previews exactly how many credits a message costs, suggests shorter wording to avoid multi-part splits, and recommends batch sizes for big lists.

Previews credit cost before sending
Suggests shorter alternatives
Recommends batch sizes

Build multi-step SMS workflows

Chain tools together: check balance → validate recipients → preview cost → send batch → monitor delivery. Your agent runs the whole pipeline with built-in error handling.

Chains tools into workflows
Handles errors and retries
Reports back in natural language

Send SMS from your favourite AI client

Texto's MCP server works with every major AI client. Pick yours below — config snippets, example prompts, and copy-paste ready.

Send SMS from Claude

Claude Desktop and Claude Code both speak MCP natively. Add Texto to your config, restart Claude, and your agent can send messages straight from a conversation.

claude_desktop_config.json

{
  "mcpServers": {
    "texto-sms": {
      "url": "https://mcp.texto.com.au",
      "headers": {
        "Authorization": "Bearer YOUR_API_KEY"
      }
    }
  }
}

Example prompts

“Text +61412345678 to remind them about their 2pm appointment tomorrow.”

“Read my inbox for any STOP replies from the last 24 hours and list the senders.”

Send SMS from ChatGPT

ChatGPT supports remote MCP servers through Developer mode and the Apps SDK. Point a custom connector at Texto and your GPT can send and read SMS for any user who supplies an API key.

ChatGPT custom connector

# In ChatGPT (Developer mode / Apps SDK) add a custom connector:
Server URL:  https://mcp.texto.com.au
Auth header: Authorization: Bearer YOUR_API_KEY
Transport:   Streamable HTTP (MCP)

Example prompts

“Send a 50%-off promo to my customer list and skip anyone who's opted out.”

“How many credits will it cost to send a 180-character message to 2,400 recipients?”

Send SMS from Cursor

Cursor's agent mode can call MCP tools mid-task. Use Texto to ping your phone when a long task finishes, notify your team on deploy, or send release notes by SMS.

~/.cursor/mcp.json

{
  "mcpServers": {
    "texto-sms": {
      "url": "https://mcp.texto.com.au",
      "headers": {
        "Authorization": "Bearer YOUR_API_KEY"
      }
    }
  }
}

Example prompts

“When the test suite passes, text my number to say the build is green.”

“Draft a one-line SMS update for our standup channel and send it to the team list.”

Send SMS from Windsurf

Windsurf (Codeium) supports MCP servers in Cascade. Drop in Texto and your AI pair can send delivery confirmations, on-call alerts, or release pings from inside your editor.

~/.codeium/windsurf/mcp_config.json

{
  "mcpServers": {
    "texto-sms": {
      "serverUrl": "https://mcp.texto.com.au",
      "headers": {
        "Authorization": "Bearer YOUR_API_KEY"
      }
    }
  }
}

Example prompts

“Send my on-call engineer a text with the staging URL once the deploy finishes.”

“Validate this list of mobile numbers and text the first 10 a thank-you message.”

Send SMS from Gemini

Gemini CLI and Gemini Code Assist both support MCP servers. Configure Texto once and Gemini can send Australian SMS as part of any agent workflow — including bulk sends from Sheets.

~/.gemini/settings.json

{
  "mcpServers": {
    "texto-sms": {
      "httpUrl": "https://mcp.texto.com.au",
      "headers": {
        "Authorization": "Bearer YOUR_API_KEY"
      }
    }
  }
}

Example prompts

“Read my Google Sheet of customers and text the ones whose subscription expires this week.”

“What's my current Texto credit balance, and how many 160-char messages can I send with it?”

11 MCP tools for SMS

Endpoint: https://mcp.texto.com.au

Every tool below is exposed automatically to any connected agent. Tools cover sending, reading, validation, cost preview, and compliance — everything you need for production SMS.

Tool	Description
send_sms	Send a single SMS to an Australian mobile number
send_batch_sms	Send personalised SMS to up to 1,000 recipients with merge fields
get_message	Retrieve a sent message and its delivery receipt
get_campaign	Get campaign stats and individual message statuses
get_inbox	List inbound messages with date/sender filters and pagination
get_optouts	List all opted-out numbers
get_balance	Check your current SMS credit balance
check_compliance	Validate a message against ACMA Spam Act rules
preview_cost	Calculate credits required before sending
suggest_send_time	Recommend optimal send time based on message type and timezone
check_spam_triggers	Scan message for spam trigger words and suggest alternatives

{
  "mcpServers": {
    "texto-sms": {
      "url": "https://mcp.texto.com.au",
      "headers": {
        "Authorization": "Bearer YOUR_API_KEY"
      }
    }
  }
}

MCP vs REST API — which should I use?

Texto's MCP server and REST API hit the same backend. Use the MCP server when an AI agent is making the decisions; use the REST API when your own code is.

	MCP Server	REST API
Best for	AI agents (Claude, ChatGPT, Cursor, Gemini)	Backends, CRMs, scripts
Transport	MCP over HTTP (Streamable)	HTTPS / JSON
Auth	Bearer token in header	API key in header
Tool discovery	Auto — agent reads tool schemas	You read the docs
Compliance helpers	check_compliance, check_spam_triggers, preview_cost	Same backend, called manually
Endpoint	mcp.texto.com.au	api.texto.com.au

Send SMS from OpenClaw

Skill: texto-sms

The texto-sms OpenClaw skill gives any compatible agent deep knowledge of Australian SMS compliance, cost optimisation, and the Texto API — without you hard-coding any of it.

Capabilities

Australian SMS compliance (ACMA Spam Act 2003)
Spam trigger word detection & avoidance
Cost optimisation (160-char limit, multi-part awareness)
Send time recommendations by message type
Opt-out management & recipient validation
Merge field personalisation for batch sends

Install with OpenClaw CLI

openclaw skills install https://texto.com.au/texto-sms-skill.md

Or download the skill definition

Download texto-sms-skill.md

Example prompts

“Use the texto-sms skill to send a compliant booking reminder to my client list at 9am tomorrow.”

“Draft an SMS promo under 160 chars, run it through the texto-sms compliance check, then send.”

Frequently asked questions

Everything you might want to know about sending SMS from an AI agent with Texto.

All integrations →REST API docs →Pricing →

Ready to connect your AI agent?

Sign up free, generate an API key, and your agent can send SMS from Claude, ChatGPT, Cursor, Windsurf, Gemini or Lovable in minutes. 5 free credits included.

Get your API key