Sproof MCP Server for LangChainGive LangChain instant access to 11 tools to Cancel Signature Request, Create Contact, Create Signature Request, and more
LangChain is the leading Python framework for composable LLM applications. Connect Sproof through Vinkius and LangChain agents can call every tool natively. combine them with retrievers, memory, and output parsers for sophisticated AI pipelines.
Ask AI about this App Connector for LangChain
The Sproof app connector for LangChain is a standout in the Industry Titans category — giving your AI agent 11 tools to work with, ready to go from day one.
Vinkius delivers Streamable HTTP and SSE to any MCP client
import asyncio
from langchain_mcp_adapters.client import MultiServerMCPClient
from langchain_openai import ChatOpenAI
from langgraph.prebuilt import create_react_agent
async def main():
# Your Vinkius token. get it at cloud.vinkius.com
async with MultiServerMCPClient({
"sproof": {
"transport": "streamable_http",
"url": "https://edge.vinkius.com/[YOUR_TOKEN_HERE]/mcp",
}
}) as client:
tools = client.get_tools()
agent = create_react_agent(
ChatOpenAI(model="gpt-4o"),
tools,
)
response = await agent.ainvoke({
"messages": [{
"role": "user",
"content": "Using Sproof, show me what tools are available.",
}]
})
print(response["messages"][-1].content)
asyncio.run(main())
* 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 Sproof MCP Server
Connect your Sproof account to any AI agent to automate your European-compliant digital signature workflows. Sproof provides a premier platform for qualified electronic signatures (QES), and this integration allows you to retrieve document metadata, monitor signature requests, and manage contacts through natural conversation.
LangChain's ecosystem of 500+ components combines seamlessly with Sproof through native MCP adapters. Connect 11 tools via Vinkius and use ReAct agents, Plan-and-Execute strategies, or custom agent architectures. with LangSmith tracing giving full visibility into every tool call, latency, and token cost.
What you can do
- Document Orchestration — List all managed documents and retrieve detailed profile metadata, including signature status programmatically.
- Signature Request Control — Create and monitor signature requests to ensure your legal documents are executed efficiently directly from the AI interface.
- Contact Management — Access and monitor your contact database to keep your signer records synchronized via natural language.
- Profile & Account Oversight — Retrieve detailed account profile metadata and monitor system usage to ensure your signature pipeline is optimized.
- Compliance Monitoring — Track document validity and signature authenticity using simple AI commands.
The Sproof MCP Server exposes 11 tools through the Vinkius. Connect it to LangChain in under two minutes — no API keys to rotate, no infrastructure to provision, no vendor lock-in. Your configuration, your data, your control.
All 11 Sproof tools available for LangChain
When LangChain connects to Sproof through Vinkius, your AI agent gets direct access to every tool listed below — spanning sproof, digital-signature, electronic-signature, and more. Every call is secured with network, filesystem, subprocess, and code evaluation entitlements inside a sandboxed runtime. Beyond a simple connection, you get a full AI Gateway with real-time visibility into agent activity, enterprise governance, and optimized token usage.
Cancel a pending signature request
Create a new contact for signing
Pass data as a JSON string. Create a new signature request
Get document details
Get account profile details
Get details for a signature request
Get the audit trail for a signature request
List all contacts
List all documents
List all signature requests
List all signers for a signature request
Connect Sproof to LangChain via MCP
Follow these steps to wire Sproof into LangChain. The entire setup takes under two minutes — your credentials stay safe behind the Vinkius.
Install dependencies
pip install langchain langchain-mcp-adapters langgraph langchain-openaiReplace the token
[YOUR_TOKEN_HERE] with your Vinkius tokenRun the agent
python agent.pyExplore tools
Why Use LangChain with the Sproof MCP Server
LangChain provides unique advantages when paired with Sproof through the Model Context Protocol.
The largest ecosystem of integrations, chains, and agents. combine Sproof MCP tools with 500+ LangChain components
Agent architecture supports ReAct, Plan-and-Execute, and custom strategies with full MCP tool access at every step
LangSmith tracing gives you complete visibility into tool calls, latencies, and token usage for production debugging
Memory and conversation persistence let agents maintain context across Sproof queries for multi-turn workflows
Sproof + LangChain Use Cases
Practical scenarios where LangChain combined with the Sproof MCP Server delivers measurable value.
RAG with live data: combine Sproof tool results with vector store retrievals for answers grounded in both real-time and historical data
Autonomous research agents: LangChain agents query Sproof, synthesize findings, and generate comprehensive research reports
Multi-tool orchestration: chain Sproof tools with web scrapers, databases, and calculators in a single agent run
Production monitoring: use LangSmith to trace every Sproof tool call, measure latency, and optimize your agent's performance
Example Prompts for Sproof in LangChain
Ready-to-use prompts you can give your LangChain agent to start working with Sproof immediately.
"List all pending signature requests in Sproof."
"Show me all pending signature requests with their signing progress and deadline status."
"Create a new signature request for the annual vendor agreement and add three signers."
Troubleshooting Sproof MCP Server with LangChain
Common issues when connecting Sproof to LangChain through the Vinkius, and how to resolve them.
MultiServerMCPClient not found
pip install langchain-mcp-adaptersSproof + LangChain FAQ
Common questions about integrating Sproof MCP Server with LangChain.
How does LangChain connect to MCP servers?
langchain-mcp-adapters to create an MCP client. LangChain discovers all tools and wraps them as native LangChain tools compatible with any agent type.