Bring Contract Lifecycle
to Claude Desktop
Create your Vinkius account to connect ShangQian / 上上签 (BestSign) to Claude Desktop and start using all 8 AI tools in minutes. Fully managed, enterprise secure, and ready to use without writing a single line of code. No hosting, no server setup — just connect and start using.
GDPR Free for SubscribersCompatible with every major AI agent and IDE
Gemini
What is the 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.
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.
How it works
- Subscribe to this server
- Enter your ShangQian Developer ID and RT Secret
- Start managing your digital signatures through Claude, Cursor, or any MCP-compatible client
Who is this for?
- Legal & Compliance Teams — automate contract status tracking and identity auditing through natural language.
- HR & Operations — coordinate employee onboarding and commercial agreement signing directly from your workspace.
- Developers — integrate professional-grade digital signature APIs into your AI-driven daily routines.
- BestSign Power Users — integrate your existing signature projects into your AI-driven daily routines.
Built-in capabilities (8)
Create signature contract
Get contract metadata
Get download URL
Get user certificate
Register a new user
Sign contract
Upload new template
Verify user identity
Why Claude Desktop?
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.
- —
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) in Claude Desktop
Why run ShangQian / 上上签 (BestSign) with Vinkius?
The ShangQian / 上上签 (BestSign) connection runs on our fully managed, secure cloud infrastructure. We handle the hosting, maintenance, and security so you don't have to deal with servers or code. All 8 tools are ready to work instantly without any complex setup.
You stay in complete control of your data. Your AI only accesses the information you approve, keeping your sensitive passwords and private details completely safe. Plus, with automatic optimizations, your AI works faster and more efficiently.
* Every connection is hosted and maintained by Vinkius. We handle the security, updates, and infrastructure so you don't have to write code or manage servers. See our infrastructure
Over 4,000 integrations ready for AI agents
Explore a vast library of pre-built integrations, optimized and ready to deploy.
Connect securely in under 30 seconds
Generate tokens to authenticate and link external services in a single step.
Complete visibility into every agent action
Audit live requests, latency, success rates, and active security compliance policies.
Optimize spending and track token ROI
Analyze real-time token consumption and cost metrics detailed by connection.
Explore our live AI Agents Analytics dashboard to see it all working
This dashboard is included when you connect ShangQian / 上上签 (BestSign) using Vinkius. You will never be left in the dark about what your AI agents are doing with your tools.
ShangQian / 上上签 (BestSign) and 4,000+ other AI tools. No hosting, no code, ready to use.
Professionals who connect ShangQian / 上上签 (BestSign) to Claude Desktop through Vinkius don't need to write code, manage servers, or worry about security. Everything is pre-configured, secure, and runs automatically in the background.
Raw MCP | Vinkius | |
|---|---|---|
| Ready-to-use MCPs | Find and configure each manually | 4,000+ MCPs ready to use |
| Connection Setup | Manual coding & server setup | 1-click instant connection |
| Server Hosting | You host it yourself (needs 24/7 uptime) | 100% hosted & managed by Vinkius |
| Security & Privacy | Stored in plaintext config files | Bank-grade encrypted vault |
| Activity Visibility | Blind execution (no logs or tracking) | Live dashboard with real-time logs |
| Cost Control | Runaway AI token spend risk | Automatic budget limits |
| Revoking Access | Must delete files or code to stop | 1-click disconnect button |
How Vinkius secures
ShangQian / 上上签 (BestSign) for Claude Desktop
Every request between Claude Desktop and ShangQian / 上上签 (BestSign) is protected by our secure gateway. We automatically keep your sensitive data private, prevent unauthorized access, and let you disconnect instantly at any time.
Frequently asked questions
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.
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.
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.
Explore More MCP Servers
View all →
Eurostat Demographics — EU Population & Labor
6 toolsEU demographics and labor market: population by age and sex, monthly unemployment rates, employment data, immigration by citizenship, life expectancy, and minimum wages for all 27 EU member states.
Splitwise
10 toolsConnect your Splitwise account to AI agents to track expenses, check balances, and manage shared groups.
Snov.io
10 toolsFind business emails, verify deliverability, and run multi-step drip campaigns that fill your outbound sales pipeline.
Plex
15 toolsManage your Plex Media Server — browse libraries, search media, check active streams and control playback from any AI agent.