How do I connect this MCP to my AI client?

You subscribe to the MCP through Vinkius. Once subscribed, you can connect it to Claude, Cursor, Windsurf, or any other MCP-compatible client with one click.

What credentials do I need?

You will need your ShangQian Developer ID and your RT Secret to authenticate the connection.

Can I use this for identity verification?

Yes. The MCP includes capabilities to perform KYC identity checks and verify digital certificates for users.

Where are the signed documents stored?

Documents are managed within the ShangQian platform. Your agent can retrieve secure download links for any finalized PDF.

Does this work with existing ShangQian templates?

Yes. Your agent can list your existing template library and use them to create new signature-ready contracts.

How do I find my ShangQian Developer ID and Secret?

Log in to the BestSign Developer Platform, navigate to the 'Application Management' or 'Credentials' section to find your unique Developer ID and RT Secret.

What is the 'account' identifier?

The account identifier is a unique string used to identify a user in the ShangQian system, typically a mobile phone number or an email address. It is required for registration and signing operations.

Does this server handle HMAC-SHA1 signatures?

Yes! The server automatically calculates the required HMAC-SHA1 signature using your RT Secret for every request, ensuring secure authorized communication with the ShangQian API.

An astronaut overseeing a futuristic data hub

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Connect ShangQian / 上上签 (BestSign) to ChatGPT and Claude

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 entire contract lifecycle through a single chat interface.

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 · 8 capabilities

We ship only the actions that matter.

Capability set01 / 02

01-04

4 capabilities in this set.

Part of 8 available through ShangQian / 上上签 (BestSign).

01
Get contract details
Retrieves specific metadata for a contract.
02
Get contract download
Generates a secure URL to download a specific contract file.
03
Get user certificate
Fetches the digital certificate associated with a user.
04
Sign contract now
Triggers the signature process for a contract immediately.

Capability set02 / 02

05-08

4 capabilities in this set.

Part of 8 available through ShangQian / 上上签 (BestSign).

05
Verify identity v2
Performs user identity verification to ensure compliance.
06
Create shangqian contract
Starts a new signature process by creating a contract.
07
Register shangqian user
Adds a new user to the ShangQian system.
08
Upload shangqian template
Adds a new document definition to your template library.

Real work

What teams actually run

Employee Onboarding

Your agent registers new hires and sends them employment contracts for signature.

Commercial Agreements

Coordinate high-volume sales contracts by triggering signatures through your agent.

Compliance Auditing

Use your agent to verify user identities and check certificate validity.

Template Management

Upload and organize new contract definitions without leaving your workspace.

Automate a task

Put ShangQian / 上上签 (BestSign) 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

ShangQian / 上上签 (BestSign) 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 ShangQian / 上上签 (BestSign) 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

943ms average. Fast in production.

ShangQian / 上上签 (BestSign) is checked daily against the live service.

Daily averagePeak 1305ms

Oct 3Today

Fastest day: 789ms
Slowest day: 1305ms
14-day trend: Slowing+19%

Connect your client

One URL. Every client.

Activate the Connector, copy your link, and paste it into the client you already use. 8 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 ShangQian / 上上签 (BestSign), so you can see the experience inside your AI.

It does not authenticate your account with ShangQian / 上上签 (BestSign). Actions requiring credentials or live account data may not run until you activate the Connector and authorize the service.

ShangQian / 上上签 (BestSign) Connector

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

Connector linkhttps://edge.vinkius.com/vk_preview_REnopRM4m6GGCThJg3txDonFts9VRddvbFicXAhb/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 — ShangQian / 上上签 (BestSign) capabilities are ready to use.

Configuration · claude_desktop_config.jsonCopy

{
  "mcpServers": {
    "shangqian-bestsign-mcp": {
      "url": "https://edge.vinkius.com/vk_preview_REnopRM4m6GGCThJg3txDonFts9VRddvbFicXAhb/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 ShangQian / 上上签 (BestSign) in Claude and other AIs

See all the AI clients this connector works with ↑

Who it's for

Built for the work ShangQian / 上上签 (BestSign) owners hand off.

This MCP is built for professionals managing legal or operational workflows in China who need to move documents quickly.

01
Legal and Compliance Teams
They hand off identity auditing and contract status tracking to the agent.
02
HR and Operations
They use the agent to coordinate employee onboarding and commercial signing.
03
Developers
They integrate signature APIs into their automated daily routines.

FAQ

Questions ShangQian / 上上签 (BestSign) owners ask.

01
How do I connect this MCP to my AI client?
You subscribe to the MCP through Vinkius. Once subscribed, you can connect it to Claude, Cursor, Windsurf, or any other MCP-compatible client with one click.
02
What credentials do I need?
You will need your ShangQian Developer ID and your RT Secret to authenticate the connection.
03
Can I use this for identity verification?
Yes. The MCP includes capabilities to perform KYC identity checks and verify digital certificates for users.
04
Where are the signed documents stored?
Documents are managed within the ShangQian platform. Your agent can retrieve secure download links for any finalized PDF.
05
Does this work with existing ShangQian templates?
Yes. Your agent can list your existing template library and use them to create new signature-ready contracts.
06
How do I find my ShangQian Developer ID and Secret?
Log in to the BestSign Developer Platform, navigate to the 'Application Management' or 'Credentials' section to find your unique Developer ID and RT Secret.
07
What is the 'account' identifier?
The account identifier is a unique string used to identify a user in the ShangQian system, typically a mobile phone number or an email address. It is required for registration and signing operations.
08
Does this server handle HMAC-SHA1 signatures?
Yes! The server automatically calculates the required HMAC-SHA1 signature using your RT Secret for every request, ensuring secure authorized communication with the ShangQian API.

Explore

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 contract details

Get contract download

Get user certificate

Sign contract now

05-08

Verify identity v2

Create shangqian contract

Register shangqian user

Upload shangqian template

What teams actually run

Employee Onboarding

Commercial Agreements

Compliance Auditing

Template Management

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

ShangQian / 上上签 (BestSign) Connector

Claude Desktop

Legal and Compliance Teams

HR and Operations

Developers

How do I connect this MCP to my AI client?

What credentials do I need?

Can I use this for identity verification?

Where are the signed documents stored?

Does this work with existing ShangQian templates?

How do I find my ShangQian Developer ID and Secret?

What is the 'account' identifier?

Does this server handle HMAC-SHA1 signatures?

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