How do I send messages to numbers outside of China?

Use the send_international_sms capability. You must include the country code and omit the 00 prefix.

What happens if an SMS fails to deliver?

You can use the send_voice_verification capability to trigger an automated call that reads the code to the recipient.

Do I need to use templates for all messages?

For verification and specific types of SMS, you must use pre-approved templates managed through the query_template_list and create_template capabilities.

Can I check if my bulk campaign was successful?

Yes, you can use query_batch_sms_status to check the delivery status of multiple messages sent with the same identifier.

How do I know if I have enough credits left?

You can use the get_sms_balance capability to check your available messaging capacity in real time.

How do I format phone numbers for sending SMS?

Phone numbers must include the country code without the 00 prefix. For example: China uses 86 (e.g., 8615800000000), Brazil uses 55 (e.g., 5511999999999), US uses 1 (e.g., 12025551234). The number should be 5-20 digits total. For Chinese domestic SMS, the message must start with a registered signature like [YourBrand].

What's the difference between send_sms and send_international_sms capabilities?

The send_sms capability uses the standard SMS gateway (smssh.253.com) optimized for Chinese domestic messages and requires pre-registered templates and signatures. The send_international_sms capability uses the international gateway (intapi.253.com) for global delivery outside China, which supports SenderId and doesn't require Chinese-style signatures. International SMS permissions must be separately enabled in your account.

How does the MD5 signature authentication work?

The Chuanglan API uses MD5 signature authentication for security. Your password is NEVER sent in the request body. Instead, it's combined with the request parameters and timestamp (nonce), then hashed with MD5 to generate a sign header. The server validates this signature to ensure request integrity. The framework handles all signature generation automatically. you only need to provide your account and password.

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Connect Chuanglan 253 (#1) to ChatGPT, Claude and Gemini

Set it up once and it works in ChatGPT, Claude, Cursor, and any other client you love. It all runs safely in the background, so you can relax and focus on what really matters. Run your global messaging operations through natural conversation.

Ask AI about this Connector

Developed, maintained, and hosted by Vinkius.

MCP VERIFIED · PRODUCTION READY · VINKIUS GUARANTEED

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Works with modern AI clients that support MCP, including ChatGPT, Claude, Cursor, and more.

Your AI does the work. We keep it safe and sound.

No other AI tool gives you this. Your workflow runs in the client you already love, your account stays protected, and you decide what the agent can and cannot do. It is the whole reason to make the switch.

Each Connector lives inside our infrastructure, the same place where your workflow runs. The three things below are already part of it, working quietly in the background so you never have to think about them. Nothing to add, nothing to set up, nothing to worry about.

V8 Isolate01

Each Connector runs inside its own sealed environment.

Each Connector runs inside its own sealed V8 runtime — no access to your files, your system, or other servers. A Connector never sees past its own request.

Kill Switch02

One switch stops every agent. Instantly.

One action deactivates every Connector, revokes every token, and ends every session at once. AI Governance keeps the record.

FinOps per User03

Spending limits that pause instead of surprise.

Every user keeps their own connections and credentials, isolated from everyone else. Anything that would cross your spending limit is held for your approval, not billed.

Three controls, built into the layer your AI connects through.

Curated set · 10 capabilities

We ship only the actions that matter.

Capability set01 / 03

01-04

4 capabilities in this set.

Part of 10 available through Chuanglan 253.

01
Get account info
Retrieve your Chuanglan 253 account settings and permissions. This provides a snapshot of your current account status.
02
Get SMS balance
Check your Chuanglan 253 SMS account balance and remaining quota. Use this to ensure you have enough credits before starting a campaign.
03
Query batch SMS status
Check the delivery status of a group of messages sent under a single tracking ID. This is the fastest way to monitor bulk campaigns.
04
Query template list
List all pre-approved SMS templates in your account. This shows the ID, name, and content for every template you can use.

Capability set02 / 03

05-07

3 capabilities in this set.

Part of 10 available through Chuanglan 253.

05
Send international SMS
Send text messages to international numbers using the global gateway. Just provide the phone number with the country code and no 00 prefix.
06
Send verification SMS
Send a specific SMS designed for one-time passwords and 1-click logins. This uses your pre-registered templates for security.
07
Send voice verification
Trigger an automated voice call that speaks a verification code to the recipient. Use this as a fallback when SMS delivery fails.

Capability set03 / 03

08-10

3 capabilities in this set.

Part of 10 available through Chuanglan 253.

08
Create template
Register a new SMS template for approval. You can use placeholders like {1} for dynamic content in your messages.
09
Query SMS status
Get the real-time delivery status of a specific message. It tells you if a message is pending, delivered, or failed.
10
Send SMS
Send a standard SMS message to any phone number with a country code. Domestic Chinese messages require a signature in brackets at the start.

Real work

What teams actually run

User Authentication

Your agent sends a one-time password via SMS or voice call to verify a user's identity during login.

Bulk Notifications

You use the agent to send large batches of messages and then immediately check the delivery status.

Account Management

You ask your agent to check your SMS balance before launching a new marketing push.

Compliance Control

You manage and list approved templates to ensure all outgoing messages meet regulatory requirements.

Automate a task

Put Chuanglan 253 to work on one thing.

Step-by-step automations your AI runs through this Connector: the workflow, the prompts to start with, and the exact capabilities behind each move.

One connector, every AI

Chuanglan 253 works with the most popular AI clients.

These are the most popular clients, each with a step-by-step guide: one link, set up once, with governance and visibility built in. And because everything runs on the MCP standard, the same connection also works in any other compatible client — nothing to rebuild.

Building your own app? The connector is yours to use.

You don't need a client to put Chuanglan 253 to work: the same hosted connection plugs into your own applications and agent code, with the same governance on every request. Build with it, chat with it — one connection for both.

Observed, not estimated

935ms average. Fast in production.

Chuanglan 253 is checked daily against the live service.

Daily averagePeak 1086ms

Oct 3Today

Fastest day: 714ms
Slowest day: 1086ms
14-day trend: Stable-3%

Connect your client

One URL. Every client.

Activate the Connector, copy your link, and paste it into the client you already use. 10 capabilities arrive ready to run.

Preview access · not provider authentication

The vk_preview_* token belongs to Vinkius preview infrastructure. It lets Claude discover and display the capabilities of Chuanglan 253, so you can see the experience inside your AI.

It does not authenticate your account with Chuanglan 253. Actions requiring credentials or live account data may not run until you activate the Connector and authorize the service.

Chuanglan 253 Connector

You're all set. Choose your MCP client and follow the setup instructions.

Connector linkhttps://edge.vinkius.com/vk_preview_A8LXcTtN7OPNZmCl3chvWjKGwueVIZ6uegR1yEW3/mcp

Claude Desktop

Follow the steps below to connect in seconds.

1In Claude Desktop, open Settings → Connectors.
2Click “Add custom connector” and paste the connector link above as the remote MCP server URL.
3Click Add and start a new chat — Chuanglan 253 capabilities are ready to use.

Configuration · claude_desktop_config.jsonCopy

{
  "mcpServers": {
    "chuanglan-253-1-mcp": {
      "url": "https://edge.vinkius.com/vk_preview_A8LXcTtN7OPNZmCl3chvWjKGwueVIZ6uegR1yEW3/mcp"
    }
  }
}

Claude
ChatGPT
Cursor
VS Code
Windsurf
Claude Code
JetBrains
Cline

Step-by-step instructions for each client are in the guide. How to connect

Guided setup for Claude? Set up Chuanglan 253 in Claude and other AIs

See all the AI clients this connector works with ↑

Who it's for

Built for the work Chuanglan 253 owners hand off.

This MCP is built for technical teams who need to bridge the gap between AI logic and real-world telecommunications.

01
Developers
Integrate SMS verification and 1-click login flows directly into AI-driven applications.
02
Product Teams
Monitor template compliance and delivery rates through natural language queries.
03
Operations
Track bulk SMS campaign progress and account balances without using a web dashboard.
04
Security Teams
Deploy voice and SMS verification codes for multi-factor authentication workflows.

FAQ

Questions Chuanglan 253 owners ask.

01
How do I send messages to numbers outside of China?
Use the send_international_sms capability. You must include the country code and omit the 00 prefix.
02
What happens if an SMS fails to deliver?
You can use the send_voice_verification capability to trigger an automated call that reads the code to the recipient.
03
Do I need to use templates for all messages?
For verification and specific types of SMS, you must use pre-approved templates managed through the query_template_list and create_template capabilities.
04
Can I check if my bulk campaign was successful?
Yes, you can use query_batch_sms_status to check the delivery status of multiple messages sent with the same identifier.
05
How do I know if I have enough credits left?
You can use the get_sms_balance capability to check your available messaging capacity in real time.
06
How do I format phone numbers for sending SMS?
Phone numbers must include the country code without the 00 prefix. For example: China uses 86 (e.g., 8615800000000), Brazil uses 55 (e.g., 5511999999999), US uses 1 (e.g., 12025551234). The number should be 5-20 digits total. For Chinese domestic SMS, the message must start with a registered signature like [YourBrand].
07
What's the difference between send_sms and send_international_sms capabilities?
The send_sms capability uses the standard SMS gateway (smssh.253.com) optimized for Chinese domestic messages and requires pre-registered templates and signatures. The send_international_sms capability uses the international gateway (intapi.253.com) for global delivery outside China, which supports SenderId and doesn't require Chinese-style signatures. International SMS permissions must be separately enabled in your account.
08
How does the MD5 signature authentication work?
The Chuanglan API uses MD5 signature authentication for security. Your password is NEVER sent in the request body. Instead, it's combined with the request parameters and timestamp (nonce), then hashed with MD5 to generate a sign header. The server validates this signature to ensure request integrity. The framework handles all signature generation automatically. you only need to provide your account and password.

Explore

More in Talk To Me

Connect Chuanglan 253 to Claude, Cursor, ChatGPT & more

Your AI does the work. We keep it safe and sound.

Each Connector runs inside its own sealed environment.

One switch stops every agent. Instantly.

Spending limits that pause instead of surprise.

We ship only the actions that matter.

01-04

Get account info

Get SMS balance

Query batch SMS status

Query template list

05-07

Send international SMS

Send verification SMS

Send voice verification

08-10

Create template

Query SMS status

Send SMS

What teams actually run

User Authentication

Bulk Notifications

Account Management

Compliance Control

Building your own app? The connector is yours to use.

Chuanglan 253 Connector

Claude Desktop

Developers

Product Teams

Operations

Security Teams

How do I send messages to numbers outside of China?

What happens if an SMS fails to deliver?

Do I need to use templates for all messages?

Can I check if my bulk campaign was successful?

How do I know if I have enough credits left?

How do I format phone numbers for sending SMS?

What's the difference between send_sms and send_international_sms capabilities?

How does the MD5 signature authentication work?

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