Bring Client Management
to OpenAI Agents SDK
Learn how to connect Assembly to OpenAI Agents SDK and start using 10 AI agent tools in minutes. Fully managed, enterprise secure, and ready to use without writing a single line of code.
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 details for a specific client
Get details for a specific company
Get a specific note
Get details for a specific user
Get a specific workspace
List all Assembly clients
List all Assembly companies
List Assembly notes
List all Assembly users
List all Assembly workspaces
Why OpenAI Agents SDK?
The OpenAI Agents SDK auto-discovers all 10 tools from Assembly through native MCP integration. Build agents with built-in guardrails, tracing, and handoff patterns. chain multiple agents where one queries Assembly, another analyzes results, and a third generates reports, all orchestrated through Vinkius.
- —
Native MCP integration via
MCPServerSse, pass the URL and the SDK auto-discovers all tools with full type safety - —
Built-in guardrails, tracing, and handoff patterns let you build production-grade agents without reinventing safety infrastructure
- —
Lightweight and composable: chain multiple agents and MCP servers in a single pipeline with minimal boilerplate
- —
First-party OpenAI support ensures optimal compatibility with GPT models for tool calling and structured output
Assembly in OpenAI Agents SDK
Assembly and 3,400+ other MCP servers. One platform. One governance layer.
Teams that connect Assembly to OpenAI Agents SDK 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.
Raw MCP | Vinkius | |
|---|---|---|
| Server catalog | Find and host yourself | 3,400+ managed |
| Infrastructure | Self-hosted | Sandboxed V8 isolates |
| Credential handling | Plaintext in config | Vault + runtime injection |
| Data loss prevention | None | Configurable DLP policies |
| Kill switch | None | Global instant shutdown |
| Financial circuit breakers | None | Per-server limits + alerts |
| Audit trail | None | Ed25519 signed logs |
| SIEM log streaming | None | Splunk, Datadog, Webhook |
| Honeytokens | None | Canary alerts on leak |
| Custom domains | Not applicable | DNS challenge verified |
| GDPR compliance | Manual effort | Automated purge + export |
Why teams choose Vinkius for Assembly in OpenAI Agents SDK
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 OpenAI Agents SDK 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.

* 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
How Vinkius secures
Assembly for OpenAI Agents SDK
Every tool call from OpenAI Agents SDK to the Assembly MCP Server is protected by DLP redaction, cryptographic audit chains, V8 sandbox isolation, kill switch, and financial circuit breakers.
Frequently asked questions
Where do I find my API Key?
Your API Key can be found in your Assembly web portal under Settings > API.
What access does this MCP need?
It requires the REST API Key, giving access to clients, companies, users, and notes.
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.
How does the OpenAI Agents SDK connect to MCP?
Use MCPServerSse(url=...) to create a server connection. The SDK auto-discovers all tools and makes them available to your agent with full type information.
Can I use multiple MCP servers in one agent?
Yes. Pass a list of MCPServerSse instances to the agent constructor. The agent can use tools from all connected servers within a single run.
Does the SDK support streaming responses?
Yes. The SDK supports SSE and Streamable HTTP transports, both of which work natively with Vinkius.
MCPServerStreamableHttp not found
Ensure you have the latest version: pip install --upgrade openai-agents
Agent not calling tools
Make sure your prompt explicitly references the task the tools can help with.
