3,400+ MCP servers ready to use
Vinkius

Bring Client Management
to LangChain

Learn how to connect Assembly to LangChain and start using 10 AI agent tools in minutes. Fully managed, enterprise secure, and ready to use without writing a single line of code.

Get ClientGet CompanyGet NoteGet UserGet WorkspaceList ClientsList CompaniesList NotesList UsersList Workspaces
Use with Your AI Agent
Ask AI about this MCP Server
ChatGPT Claude Perplexity

What is the Assembly MCP Server?

Assembly

The Assembly MCP Server allows AI agents to interact with your Assembly platform data seamlessly.

What you can do

  • Retrieve clients, companies, and users.
  • Access workspaces and CRM details.
  • Manage notes and internal data.

How it works

Connect your Assembly account via your API Key to manage your professional service data dynamically.

Built-in capabilities (10)

get_client

Get details for a specific client

get_company

Get details for a specific company

get_note

Get a specific note

get_user

Get details for a specific user

get_workspace

Get a specific workspace

list_clients

List all Assembly clients

list_companies

List all Assembly companies

list_notes

List Assembly notes

list_users

List all Assembly users

list_workspaces

List all Assembly workspaces

Why LangChain?

LangChain's ecosystem of 500+ components combines seamlessly with Assembly 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.

  • —

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

See it in action

Assembly in LangChain

AI Agent→Vinkius
High Security·Kill Switch·Plug and Play
Why Vinkius

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

Teams that connect Assembly 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
Use with Your AI Agent View step-by-step setup guide for LangChain →
Enterprise Security

Why teams choose Vinkius for Assembly in LangChain

The Assembly 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 10 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.

Use with Your AI Agent View full Assembly details →
Assembly
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 Assembly for LangChain

Every tool call from LangChain to the Assembly 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

Where do I find my API Key?

Your API Key can be found in your Assembly web portal under Settings > API.

02

What access does this MCP need?

It requires the REST API Key, giving access to clients, companies, users, and notes.

03

Can I browse workspaces and internal notes through the AI agent?

Yes. Use list_workspaces to see all workspaces and get_workspace to inspect a specific one. For notes, list_notes retrieves all entries and get_note fetches the full content of a specific note by ID.

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