Can I see who has already signed a document?

Yes. Use the `get_document` tool with the specific Document ID. The agent will return the list of participants and their respective signing status.

What is an audit log in Modusign?

An audit log records every action taken on a document, including when it was sent, opened, and signed, providing legal proof of the transaction. Use the `get_audit_logs` tool to retrieve this history.

How do I reuse my existing contract templates?

Use the `list_templates` tool to find the Template ID you need, and then provide that ID to the `create_document_from_template` tool along with the signer's details.

Modusign MCP Server for LangChain 10 tools — connect in under 2 minutes

Name: Modusign
Availability: InStock
Author: Vinkius

python.langchain.com/docs/integrations/tools/mcp

Built by Vinkius GDPR 10 Tools Framework

LangChain is the leading Python framework for composable LLM applications. Connect Modusign through Vinkius and LangChain agents can call every tool natively. combine them with retrievers, memory, and output parsers for sophisticated AI pipelines.

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.

python

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({
        "modusign": {
            "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 Modusign, show me what tools are available.",
            }]
        })
        print(response["messages"][-1].content)

asyncio.run(main())

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 Modusign MCP Server

Connect your Modusign account to your AI agent and streamline your document signing workflows through natural conversation.

LangChain's ecosystem of 500+ components combines seamlessly with Modusign through native MCP adapters. Connect 10 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 Tracking — List all electronic contracts and get real-time status updates (e.g., signed, pending).
Deep Inspection — Fetch complete metadata and audit trails for specific documents using their IDs.
Template Management — List your pre-defined contract templates for quick reuse.
Signature Requests — Create new signature requests from templates with a simple natural language command.
Automation & Webhooks — Monitor your automated signature workflows and active webhooks.
Org Structure — Access folders and organization metadata to keep your documents organized.

The Modusign MCP Server exposes 10 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.

How to Connect Modusign to LangChain via MCP

Follow these steps to integrate the Modusign MCP Server with LangChain.

Install dependencies

Run pip install langchain langchain-mcp-adapters langgraph langchain-openai

Replace the token

Replace [YOUR_TOKEN_HERE] with your Vinkius token

Run the agent

Save the code and run python agent.py

Explore tools

The agent discovers 10 tools from Modusign via MCP

Why Use LangChain with the Modusign MCP Server

LangChain provides unique advantages when paired with Modusign through the Model Context Protocol.

The largest ecosystem of integrations, chains, and agents. combine Modusign 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 Modusign queries for multi-turn workflows

Modusign + LangChain Use Cases

Practical scenarios where LangChain combined with the Modusign MCP Server delivers measurable value.

RAG with live data: combine Modusign tool results with vector store retrievals for answers grounded in both real-time and historical data

Autonomous research agents: LangChain agents query Modusign, synthesize findings, and generate comprehensive research reports

Multi-tool orchestration: chain Modusign tools with web scrapers, databases, and calculators in a single agent run

Production monitoring: use LangSmith to trace every Modusign tool call, measure latency, and optimize your agent's performance

Modusign MCP Tools for LangChain (10)

These 10 tools become available when you connect Modusign to LangChain via MCP:

create_document_from_template

Create document from template

get_audit_logs

Get document audit logs

get_document

Get specific document details

get_org_info

Get organization metadata

list_automations

List signature automations

list_documents

List electronic documents

list_external_files

List external document files

list_folders

List document folders

list_templates

List contract templates

list_webhooks

List active webhooks

Example Prompts for Modusign in LangChain

Ready-to-use prompts you can give your LangChain agent to start working with Modusign immediately.

"List my most recent electronic documents."

"Send a 'Standard NDA' to ryan@example.com using template ID tmp_123."

"Show me the audit logs for document doc_987."

Troubleshooting Modusign MCP Server with LangChain

Common issues when connecting Modusign to LangChain through the Vinkius, and how to resolve them.

MultiServerMCPClient not found

Install: pip install langchain-mcp-adapters

Modusign + LangChain FAQ

Common questions about integrating Modusign MCP Server with LangChain.

How does LangChain connect to MCP servers?

Use langchain-mcp-adapters to create an MCP client. LangChain discovers all tools and wraps them as native LangChain tools compatible with any agent type.

Which LangChain agent types work with MCP?

All agent types including ReAct, OpenAI Functions, and custom agents work with MCP tools. The tools appear as standard LangChain tools after the adapter wraps them.