Connect
Optimize
Secure
Live 64 Actions
Unleashed MCP Server
for AI Agents
Connect your AI agent to StackOne's Unleashed MCP server and give it 64 MCP tools out of the box. Auth, tool execution, and security all managed.
Unleashed MCP Server
Built by 
StackOne
StackOne 
Coverage
64 Agent Actions
Create, read, update, and delete across Unleashed — and extend your agent's capabilities with custom actions.
Authentication
Agent Tool Authentication
Per-user OAuth in one call. Your Unleashed MCP server gets session-scoped tokens with zero credentials stored on your infra.
Agent Auth →
Security
Agent Protection
Every Unleashed tool response scanned for prompt injection in milliseconds — 88.7% accuracy, all running on CPU.
Prompt Injection Defense →
Performance
Max Agent Context. Min Cost.
Free up to 96% of your agent's context window to enhance reasoning and reduce cost, on every Unleashed call.
Tools Discovery →What is the Unleashed MCP Server?
A Unleashed MCP server lets AI agents read and write Unleashed data through the Model Context Protocol — Anthropic's open standard for connecting LLMs to external tools. StackOne's Unleashed MCP server ships with 64 pre-built actions, fully extensible via the Connector Builder — plus managed authentication, prompt injection defense, observability, and agent execution runtime. Connect it from MCP clients like Claude Desktop, Claude Code, Cursor, Goose, and VS Code, or from agent frameworks like OpenAI Agents SDK, LangChain, and Vercel AI SDK.
All Unleashed MCP Tools
Every action from Unleashed's API, ready for your agent. Create, read, update, and delete — scoped to exactly what you need.
Assemblys
- Create Assembly
Create a new assembly order
- Get Assembly
Retrieve a single assembly by GUID
Bill Of Materials
- Create Bill Of Materials
Create a new bill of materials
- List Bill Of Materials
List bills of materials defining product compositions
- Get Bill Of Materials
Retrieve a single BOM by GUID
Customers
- Create Customer
Create a new customer record
- List Customers
List customers with filtering and pagination
- Get Customer
Retrieve a single customer by GUID
- Update Customer
Update an existing customer (full overwrite)
Customer Contacts
- Create Customer Contact
Add a new contact to a customer
- List Customer Contacts
List contacts for a customer
- Update Customer Contact
Update an existing customer contact
- Delete Customer Contact
Delete a customer contact
Invoices
- List Invoices
List sales invoices
- Get Invoice
Retrieve a single invoice by GUID
Products
- Create Product
Create a new product record
- List Products
List products with filtering and pagination
- Get Product
Retrieve a single product by GUID
- Update Product
Update an existing product (full overwrite)
Purchase Orders
- Create Purchase Order
Create a new purchase order
- List Purchase Orders
List purchase orders with filtering and pagination
- Get Purchase Order
Retrieve a single purchase order by GUID
- Update Purchase Order
Update an existing purchase order
- Delete Purchase Order
Delete a purchase order
Purchase Order Lines
- Create Purchase Order Line
Add a line item to an existing purchase order
- Update Purchase Order Line
Update a single line on a purchase order
Sales Orders
- Create Sales Order
Create a new sales order
- List Sales Orders
List sales orders with filtering and pagination
- Get Sales Order
Retrieve a single sales order by GUID
- Update Sales Order
Update an existing sales order
- Delete Sales Order
Delete a sales order
Sales Shipments
- List Sales Shipments
List sales shipments associated with sales orders
- Get Sales Shipment
Retrieve a single shipment by GUID
Stock Adjustments
- Create Stock Adjustment
Create a stock adjustment to modify inventory levels
- List Stock Adjustments
List stock adjustments made to inventory levels
- Get Stock Adjustment
Retrieve a single stock adjustment by GUID
Stock Counts
- List Stock Counts
List stock count records for inventory reconciliation
- Get Stock Count
Retrieve a single stock count by GUID
Stock On Hands
- List Stock On Hand
List current inventory levels across products and warehouses
- Get Stock On Hand
Retrieve stock on hand for a specific product (default warehouse)
Suppliers
- List Suppliers
List suppliers configured in Unleashed
- Get Supplier
Retrieve a single supplier by GUID
Warehouse Stock Transfers
- Create Warehouse Stock Transfer
Create a stock transfer order between warehouses
- List Warehouse Stock Transfers
List stock transfer orders between warehouses
- Get Warehouse Stock Transfer
Retrieve a single transfer by GUID
Other (19)
- Create Sales Order Line
Add a line item to an existing sales order
- List Accounts
List accounts (chart of accounts)
- List Assemblies
List assembly orders for manufacturing finished goods from components
- List Delivery Methods
List delivery methods configured for sales
- List Payment Terms
List payment terms configured in the account
- List Product Brands
List product brands
- List Product Groups
List product groups (including nested sub-groups)
- List Sales Order Groups
List sales order groups configured in the account
- List Salespersons
List salespersons configured in the account
- List Sell Price Tiers
List configured sell price tiers
- List Stock On Hand For Product Across All Warehouses
Retrieve stock on hand quantities for one product across every warehouse
- List Supplier Return Reasons
List supplier return reasons
- List Taxes
List configured taxes
- List Units Of Measure
List units of measure
- List Warehouses
List warehouses configured for inventory
- Obsolete Product
Mark a product as obsolete
- Receipt Purchase Order
Mark a purchase order as receipted (received)
- Complete Purchase Order
Mark a purchase order as completed
- Complete Sales Order
Mark a sales order as completed
Set Up Your Unleashed MCP Server in Minutes
One endpoint. Any framework. Your agent is talking to Unleashed in under 10 lines of code.
Agent Frameworks
JSON{
"mcpServers": {
"stackone": {
"command": "npx",
"args": [
"-y",
"mcp-remote@latest",
"https://api.stackone.com/mcp?x-account-id=<account_id>",
"--header",
"Authorization: Basic <YOUR_BASE64_TOKEN>"
]
}
}
}Check More Commerce MCP Servers
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Platform Resources
MCP Code Mode: Keeping Tool Responses Out of Agent Context
Anthropic's code_execution processes data already in context. Custom MCP code mode keeps raw tool responses in a sandbox. 14K tokens vs 500.
11 min
Comparing BM25, TF-IDF, and Hybrid Search for MCP Tool Discovery
Benchmarking BM25, TF-IDF, and hybrid search for MCP tool discovery across 916 tools. The 80/20 TF-IDF/BM25 hybrid hits 21% Top-1 accuracy in under 1ms.
10 min
Indirect Prompt Injection Defense for MCP Tools: A Technical Guide
MCP tools that read emails, CRM records, and tickets are indirect prompt injection vectors. Here's how we built a two-tier defense that scans tool results in ~11ms.
12 min
MCP vs A2A: Architecture, Security, and When to Use Each
MCP vs A2A: what each protocol standardizes, how they differ, their shared security risks including indirect prompt injection, and when to use one, both, or a hybrid architecture.
12 min
MCP vs API: What 200+ Connector Builds Taught Us
MCP wraps APIs, it doesn't replace them. After building 200+ connectors that serve both, here's when each approach wins.
14 min read
Unleashed MCP Server FAQ
Does StackOne have a Unleashed MCP server?
Yes. StackOne offers a hosted Unleashed MCP server with 64 pre-built actions, and every action is tested and QA'd by StackOne. Connect it to Claude, Cursor, and any other MCP client, or to any agent framework through the AI Action SDK. It ships with managed agent authentication, prompt injection defense, and tool discovery with server-side execution that preserve your agent's context window and keep reasoning performance.
Unleashed MCP server vs direct API integration — what's the difference?
A Unleashed MCP server and direct API integration serve different use cases. Direct API integration is for software-to-software — backend code calling Unleashed. A Unleashed MCP server is for AI agents — MCP clients like Claude and Cursor, plus framework agents built with OpenAI, LangChain, or Vercel AI — discovering and calling Unleashed at runtime. StackOne provides both.
How does Unleashed authentication work for AI agents?
Unleashed authentication for AI agents works through a StackOne Connect Session. Create one via the dashboard or the SDK — you get an auth link and ready-to-paste config for Claude Desktop, Cursor, and other MCP clients. Your user authenticates their own Unleashed account; StackOne handles token exchange, storage, and refresh. Credentials never reach the LLM, and each user is isolated via
origin_owner_id.Are Unleashed MCP tools vulnerable to prompt injection?
Yes — Unleashed MCP tools can be vulnerable to indirect prompt injection. Any tool that reads user-written content — documents, messages, tickets, records, or free-text fields — is a potential vector. StackOne Defender scans every tool response before it enters the agent's context — regex patterns in ~1ms, then a MiniLM classifier in ~4ms. 88.7% accuracy, CPU-only.
What is the context bloat of a Unleashed agent and how do I avoid it?
Context bloat happens when Unleashed tool schemas and API responses eat your Unleashed agent's memory, preventing it from reasoning effectively. A single Unleashed query can return a massive JSON response, and connecting multiple tools compounds the problem. Tools Discovery and Code Mode reduce context bloat — loading only relevant tools per query and keeping raw responses out of the agent's context.
Can I limit which actions my Unleashed agent can access?
Yes — you can limit which actions your Unleashed agent can access directly from the StackOne dashboard. Toggle actions on or off, or restrict them to specific accounts, with no code changes to your agent. Session tokens can be scoped to exact actions so if one leaks, exposure stays contained.
Can I create custom agent actions for my Unleashed MCP server?
Yes — you can create custom agent actions for your Unleashed MCP server using Connector Builder. It's an integration agent your coding assistant (Claude Code, Cursor, or Copilot) can invoke to research Unleashed's API, generate production-ready connector YAML, test against the live API, and validate before you ship.
When should I NOT use a Unleashed MCP server?
Skip a Unleashed MCP server if your integration is purely software-to-software — direct Unleashed API integration is simpler when no AI agent is involved. For deterministic, compliance-critical operations (financial transactions, regulatory reporting), direct API gives you predictable behavior without agent-driven decision-making. MCP shines when AI agents need to dynamically discover and call Unleashed actions at runtime.
What AI frameworks and AI clients does the StackOne Unleashed MCP server support?
The StackOne Unleashed MCP server supports both. MCP clients (paste-and-go apps): Claude Desktop, Claude Code, Cursor, VS Code, Goose. Agent frameworks (code SDKs you build with): OpenAI Agents SDK, Anthropic, Vercel AI, Google ADK, CrewAI, Pydantic AI, LangChain, LangGraph, Azure AI Foundry.
Put your AI agents to work
All the tools you need to build and scale AI agent integrations, with best-in-class connectivity, execution, and security.