3,400+ MCP servers ready to use
Vinkius

Bring Electronic Signatures
to LangChain

Learn how to connect DottedSign to LangChain and start using 12 AI agent tools in minutes. Fully managed, enterprise secure, and ready to use without writing a single line of code.

Cancel TaskCreate TaskCreate Task From TemplateDelete TaskGet Audit TrailGet MeList TasksList TemplatesList UsersList WebhooksRetrieve TaskUpdate Task

What is the DottedSign MCP Server?

The DottedSign MCP server empowers your AI agent to manage electronic signatures, retrieve document templates, and orchestrate signing tasks entirely from the conversational interface.

Built-in capabilities (12)

cancel_task

Cancel an active signing task

create_task

Create a new signing task

create_task_from_template

Create a new signing task from a template

delete_task

Delete a signing task

get_audit_trail

Get the audit trail for a specific task

get_me

Get information about the current user/token

list_tasks

List all signing tasks

list_templates

List all available templates

list_users

List all users in the account

list_webhooks

List all configured webhooks

retrieve_task

Get details of a specific signing task

update_task

Update an existing signing task

Why LangChain?

LangChain's ecosystem of 500+ components combines seamlessly with DottedSign through native MCP adapters. Connect 12 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.

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

See it in action

DottedSign in LangChain

AI AgentVinkius
High Security·Kill Switch·Plug and Play
Why Vinkius

DottedSign and 3,400+ other MCP servers. One platform. One governance layer.

Teams that connect DottedSign to LangChain through Vinkius don't need to source, host, or maintain individual MCP servers. Every tool call runs inside a hardened runtime with credential isolation, DLP, and a signed audit chain.

3,400+MCP Servers ready
<40msCold start
60%Token savings
Raw MCP
Vinkius
Server catalogFind and host yourself3,400+ managed
InfrastructureSelf-hostedSandboxed V8 isolates
Credential handlingPlaintext in configVault + runtime injection
Data loss preventionNoneConfigurable DLP policies
Kill switchNoneGlobal instant shutdown
Financial circuit breakersNonePer-server limits + alerts
Audit trailNoneEd25519 signed logs
SIEM log streamingNoneSplunk, Datadog, Webhook
HoneytokensNoneCanary alerts on leak
Custom domainsNot applicableDNS challenge verified
GDPR complianceManual effortAutomated purge + export
Enterprise Security

Why teams choose Vinkius for DottedSign in LangChain

The DottedSign 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. All 12 tools execute in hardened sandboxes optimized for native MCP execution.

Your AI agents in LangChain only access the data you authorize, with DLP that blocks sensitive information from ever reaching the model, kill switch for instant shutdown, and up to 60% token savings. Enterprise-grade infrastructure, zero maintenance.

DottedSign
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

The Vinkius Advantage

How Vinkius secures DottedSign for LangChain

Every tool call from LangChain to the DottedSign MCP Server is protected by DLP redaction, cryptographic audit chains, V8 sandbox isolation, kill switch, and financial circuit breakers.

< 40msCold start
Ed25519Signed audit chain
60%Token savings
FAQ

Frequently asked questions

01

Can I automate the sending of a specific document template?

Yes! You can use the agent to map the document template and instantly send the signing request.

02

How can I track the signing status of a document?

Simply query the Task ID through the agent to retrieve its real-time signature status, whether pending or completed.

03

Do I need a paid plan to use the DottedSign API?

Access to the API generally requires an active DottedSign API subscription plan. Check the official docs for current restrictions.

04

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.

05

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.

06

Can I trace MCP tool calls in LangSmith?

Yes. All MCP tool invocations appear as traced steps in LangSmith, showing input parameters, response payloads, latency, and token usage.

07

MultiServerMCPClient not found

Install: pip install langchain-mcp-adapters