How do I find my ShangQian Developer ID and Secret?

Log in to the [BestSign Developer Platform](https://open.bestsign.cn/), 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.

ShangQian / 上上签 (BestSign) MCP Server for Claude Desktop 8 tools — connect in under 2 minutes

Name: ShangQian / 上上签 (BestSign)
Availability: InStock
Author: Vinkius

modelcontextprotocol.io/quickstart/user

Built by Vinkius GDPR 8 Tools IDE

Claude Desktop is Anthropic's native application for interacting with Claude AI models on macOS and Windows. It was the first consumer application to ship with built-in MCP support, making it the reference implementation for the Model Context Protocol standard.

Get MCP Server for AI Agents

ASK AI ABOUT THIS MCP SERVER

Open in ChatGPT Open in Claude Open in Perplexity

Vinkius supports streamable HTTP and SSE.

RecommendedModern Approach — Zero Configuration

Vinkius Desktop App

The modern way to manage MCP Servers — no config files, no terminal commands. Install ShangQian / 上上签 (BestSign) and 2,500+ MCP Servers from a single visual interface.

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Classic Setup·json

{
  "mcpServers": {
    "shangqian-bestsign": {
      // Your Vinkius token. get it at cloud.vinkius.com
      "url": "https://edge.vinkius.com/[YOUR_TOKEN_HERE]/mcp"
    }
  }
}

Fully ManagedVinkius Servers

60%Token savings

High SecurityEnterprise-grade

IAMAccess control

EU AI ActCompliant

DLPData protection

V8 IsolateSandboxed

Ed25519Audit chain

<40msKill switch

Stream every event to Splunk, Datadog, or your own webhook in real-time

* Every MCP server runs on Vinkius-managed infrastructure inside AWS - a purpose-built runtime with per-request V8 isolates, Ed25519 signed audit chains, and sub-40ms cold starts optimized for native MCP execution. See our infrastructure

About ShangQian / 上上签 (BestSign) MCP Server

Empower your AI agent to orchestrate your digital document workflows and electronic signatures with ShangQian (BestSign / 上上签), the premier B2B digital signature platform in China. By connecting ShangQian to your agent, you transform complex contract lifecycle management, user identity verification (KYC), and signature orchestration into a natural conversation. Your agent can instantly register new personal or enterprise users, initialize contracts from pre-defined templates, retrieve detailed contract statuses, and even generate secure download links for executed documents without you ever needing to navigate the comprehensive BestSign Management Portal. Whether you are automating HR onboarding or coordinating high-volume commercial agreements, your agent acts as a real-time contract coordinator, providing accurate and fast results from a single, authorized source.

Claude Desktop is the definitive way to connect ShangQian / 上上签 (BestSign) to your AI workflow. Add Vinkius Edge URL to your config, restart the app, and Claude immediately exposes all 8 tools in the chat interface. ask a question, Claude calls the right tool, and you see the answer. Zero code, zero context switching.

What you can do

User Orchestration — Register new users, verify digital certificates, and perform KYC identity checks.
Contract Management — Create signature-ready contracts using templates and monitor real-time completion status.
Template Automation — List and audit your library of contract templates and upload new document definitions.
Execution Control — Trigger signature operations for authorized accounts and retrieve finalized PDF documents.
Operational Monitoring — Verify API connectivity and monitor system health to ensure signature reliability.

The ShangQian / 上上签 (BestSign) MCP Server exposes 8 tools through the Vinkius. Connect it to Claude Desktop in under two minutes — no API keys to rotate, no infrastructure to provision, no vendor lock-in. Your configuration, your data, your control.

How to Connect ShangQian / 上上签 (BestSign) to Claude Desktop via MCP

Follow these steps to integrate the ShangQian / 上上签 (BestSign) MCP Server with Claude Desktop.

Open Claude Desktop Settings

Go to Settings → Developer → Edit Config to open claude_desktop_config.json

Add the MCP Server

Paste the configuration above into the mcpServers section

Restart Claude Desktop

Close and reopen Claude Desktop to load the new server

Start using ShangQian / 上上签 (BestSign)

Look for the 🔌 icon in the chat. your 8 tools are now available

Why Use Claude Desktop with the ShangQian / 上上签 (BestSign) MCP Server

Claude Desktop by Anthropic provides unique advantages when paired with ShangQian / 上上签 (BestSign) through the Model Context Protocol.

Claude Desktop is the reference MCP client. it was designed alongside the protocol itself, ensuring the most complete and stable MCP implementation available

Zero-code configuration: add a server URL to a JSON file and Claude instantly discovers and exposes all available tools in the chat interface

Claude's extended thinking capability lets it reason through multi-step tool usage, chaining multiple API calls to answer complex questions

Enterprise-grade security with local config storage. your tokens never leave your machine, and connections go directly to Vinkius Edge network

ShangQian / 上上签 (BestSign) + Claude Desktop Use Cases

Practical scenarios where Claude Desktop combined with the ShangQian / 上上签 (BestSign) MCP Server delivers measurable value.

Interactive data exploration: ask Claude to query DNS records, look up WHOIS data, and cross-reference results in a single conversation

Ad-hoc security audits: type a domain name and let Claude enumerate subdomains, check DNS history, and flag configuration anomalies. all through natural language

Executive briefings: generate comprehensive domain intelligence reports by asking Claude to compile findings into a formatted summary

Learning and training: new team members can explore API capabilities conversationally without needing to read documentation

ShangQian / 上上签 (BestSign) MCP Tools for Claude Desktop (8)

These 8 tools become available when you connect ShangQian / 上上签 (BestSign) to Claude Desktop via MCP:

create_shangqian_contract

Create signature contract

get_contract_details

Get contract metadata

get_contract_download

Get download URL

get_user_certificate

Get user certificate

register_shangqian_user

sign_contract_now

Sign contract

upload_shangqian_template

Upload new template

verify_identity_v2

Verify user identity

Example Prompts for ShangQian / 上上签 (BestSign) in Claude Desktop

Ready-to-use prompts you can give your Claude Desktop agent to start working with ShangQian / 上上签 (BestSign) immediately.

"List all contract templates in my ShangQian account."

"Register a new enterprise user 'Vinkius' with account 'vinkius@example.com'."

"What is the status of contract '88210934'?"

Troubleshooting ShangQian / 上上签 (BestSign) MCP Server with Claude Desktop

Common issues when connecting ShangQian / 上上签 (BestSign) to Claude Desktop through the Vinkius, and how to resolve them.

Server not appearing after restart

Ensure the JSON is valid (no trailing commas). Check the file path: ~/Library/Application Support/Claude/claude_desktop_config.json (macOS) or %APPDATA%\\Claude\\ (Windows).

Authentication error

Verify your Vinkius token is correct. Go to cloud.vinkius.com to regenerate it if needed.

Tools not showing in chat

Click the 🔌 icon at the bottom of the chat input. If it shows 0 tools, the server may still be connecting. wait a few seconds.

ShangQian / 上上签 (BestSign) + Claude Desktop FAQ

Common questions about integrating ShangQian / 上上签 (BestSign) MCP Server with Claude Desktop.

How does Claude Desktop discover MCP tools?

When Claude Desktop starts, it reads the claude_desktop_config.json file and connects to each configured MCP server. It calls the tools/list endpoint to fetch the schema for every available tool, then surfaces them as clickable options in the chat interface via the 🔌 icon.

What happens if the MCP server is temporarily unavailable?

Claude Desktop handles disconnections gracefully. if the server is unreachable at startup, the tools simply won't appear. Once the server becomes available again, restarting Claude Desktop will re-establish the connection. There is no timeout penalty or error loop.

Can I connect multiple MCP servers simultaneously?

Yes. You can add as many servers as you need in the mcpServers section of the config file. Each server appears as a separate tool provider, and Claude can use tools from multiple servers in a single conversation turn.

Is there a limit on the number of tools per server?

Claude Desktop can handle hundreds of tools per server. However, for optimal LLM performance, Vinkius servers are designed to expose focused, well-documented tool sets rather than overwhelming the model with too many options.

Does Claude Desktop support Streamable HTTP transport?

Yes. Claude Desktop supports both SSE (Server-Sent Events) and the newer Streamable HTTP transport that Vinkius uses. Simply provide the server URL. Claude auto-negotiates the transport protocol.