How do I find my eSign App ID and Secret?

Log in to the [eSign Open Platform](https://open.esign.cn/), create a new application, and you will find your App ID and App Secret in the application credentials section.

Can I retrieve the signing URL for a participant?

Yes. Use the `get_execute_url` tool with the flow ID and the signer's account ID. Your agent will retrieve the unique URL where the participant can perform the signature.

Is it possible to download the signed documents?

Yes! Once a sign flow is completed, you can use the `download_docs` tool to retrieve temporary download links for all documents included in that flow.

eSign (e签宝) MCP Server for Claude Desktop 10 tools — connect in under 2 minutes

Name: eSign (e签宝)
Availability: InStock
Author: Vinkius

modelcontextprotocol.io/quickstart/user

Built by Vinkius GDPR 10 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.

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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 eSign (e签宝) and 2,500+ MCP Servers from a single visual interface.

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Classic Setup·json

{
  "mcpServers": {
    "esign-e": {
      // 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 eSign (e签宝) MCP Server

Empower your AI agent to orchestrate your digital agreement lifecycle with eSign (e签宝), the premier electronic signature platform in China. By connecting eSign to your agent, you transform complex contract workflows and document signing into a natural conversation. Your agent can instantly list your sign flows, create new signature tasks, manage document templates, and even retrieve signing URLs for participants without you ever needing to navigate the comprehensive eSign portal. Whether you are managing high-volume employee contracts or complex B2B agreements, your agent acts as a real-time legal operations assistant, keeping your documents secure and your business moving.

Claude Desktop is the definitive way to connect eSign (e签宝) to your AI workflow. Add Vinkius Edge URL to your config, restart the app, and Claude immediately exposes all 10 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

Sign Flow Orchestration — Create and manage digital signature workflows with full support for documents and signers.
Template Management — Browse predefined document templates to accelerate your contract production.
Signature Tracking — Monitor the real-time status of active sign flows and retrieve execution URLs for participants.
Document Control — Add PDF documents to signature tasks and retrieve download links for completed agreements.
Organization Insights — Retrieve high-level information about your enterprise eSign account and authorization status.

The eSign (e签宝) MCP Server exposes 10 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 eSign (e签宝) to Claude Desktop via MCP

Follow these steps to integrate the eSign (e签宝) 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 eSign (e签宝)

Look for the 🔌 icon in the chat. your 10 tools are now available

Why Use Claude Desktop with the eSign (e签宝) MCP Server

Claude Desktop by Anthropic provides unique advantages when paired with eSign (e签宝) 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

eSign (e签宝) + Claude Desktop Use Cases

Practical scenarios where Claude Desktop combined with the eSign (e签宝) 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

eSign (e签宝) MCP Tools for Claude Desktop (10)

These 10 tools become available when you connect eSign (e签宝) to Claude Desktop via MCP:

add_docs

Add documents to flow

add_signers

Add signers to flow

create_sign_flow

Create a new sign flow

download_docs

Download flow documents

get_execute_url

Get signature URL

get_org_info

Get organization details

get_sign_flow

Get sign flow details

list_sign_flows

List sign flows

list_templates

List sign templates

start_flow

Start sign flow

Example Prompts for eSign (e签宝) in Claude Desktop

Ready-to-use prompts you can give your Claude Desktop agent to start working with eSign (e签宝) immediately.

"List all active signature flows on eSign."

"Get the signing URL for account 'acc-8821' in flow 'flow-9920'."

"Show me all available document templates."

Troubleshooting eSign (e签宝) MCP Server with Claude Desktop

Common issues when connecting eSign (e签宝) 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.

eSign (e签宝) + Claude Desktop FAQ

Common questions about integrating eSign (e签宝) 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.