Connect
Optimize
Secure
Squarespace MCP Server
for AI Agents
Production-ready Squarespace MCP server with 27 extensible actions — plus built-in authentication, security, and optimized execution.
Squarespace MCP Server
Built by 
StackOne
StackOne 
Coverage
27 Agent Actions
Create, read, update, and delete across Squarespace — and extend your agent's capabilities with custom actions.
Authentication
Agent Tool Authentication
Per-user OAuth in one call. Your Squarespace MCP server gets session-scoped tokens with zero credentials stored on your infra.
Agent Auth →
Security
Agent Protection
Every Squarespace 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 Squarespace call.
Tools Discovery →What is the Squarespace MCP Server?
A Squarespace MCP server lets AI agents read and write Squarespace data through the Model Context Protocol — Anthropic's open standard for connecting LLMs to external tools. StackOne's Squarespace MCP server ships with 27 pre-built actions, fully extensible via the Connector Builder — plus managed authentication, prompt injection defense, and optimized agent context. Connect it from MCP clients like Claude Desktop, Cursor, and VS Code, or from agent frameworks like OpenAI Agents SDK, LangChain, and Vercel AI SDK.
All Squarespace MCP Tools and Actions
Every action from Squarespace's API, ready for your agent. Create, read, update, and delete — scoped to exactly what you need.
Site Informations
- Get Site Information
Retrieve basic website information for the connected Squarespace site.
Inventorys
- List Inventory
Retrieve all inventory items with pagination support.
- Get Inventory
Retrieve inventory details for specific items by their variant IDs.
Adjust Stock Quantities
- Adjust Stock Quantities
Adjust inventory stock quantities using increment, decrement, set finite, or set unlimited operations.
Orders
- Create Order
Import a third-party order into Squarespace.
- List Orders
Retrieve all orders with optional filtering by customer, date range, and fulfillment status.
- Get Order
Retrieve a specific order by its ID.
Fulfill Orders
- Fulfill Order
Add shipment information to an order to mark it as fulfilled.
Products
- Create Product
Create a new product in a store page with at least one variant.
- List Products
Retrieve all products with optional filtering by modification date and product type.
- Get Product
Retrieve specific products by their IDs.
- Update Product
Update an existing product's name, description, tags, visibility, or SEO options.
- Delete Product
Permanently delete a product and all its variants and images.
Product Variants
- Create Product Variant
Add a new variant to an existing product with SKU and pricing.
- Update Product Variant
Update an existing product variant's SKU, pricing, attributes, or shipping measurements.
- Delete Product Variant
Delete a variant from a product (product must have more than one variant).
Product Images
- Upload Product Image
Upload an image file to a product (JPEG, PNG, or GIF, max 20MB).
- Update Product Image
Update the alt text of a product image for SEO and accessibility.
- Delete Product Image
Remove a product image and all variant references to it.
Product Image Upload Status
- Get Product Image Upload Status
Check the processing status of an uploaded product image.
Reorder Product Images
- Reorder Product Image
Change the display order of a product image.
Assign Product Image To Variants
- Assign Product Image To Variant
Assign a product image to a specific variant or remove the assignment.
Profiles
- List Profiles
Retrieve all customer, subscriber, and user profiles with optional filtering and sorting.
- Get Profile
Retrieve specific profiles by their IDs.
Store Pages
- List Store Pages
Retrieve all store pages on the merchant site.
Transactions
- List Transactions
Retrieve all transactions with optional filtering by modification date.
- Get Transaction
Retrieve specific transactions by their document IDs.
Set Up Your Squarespace MCP Server in Minutes
One endpoint. Any framework. Your agent is talking to Squarespace in under 10 lines of code.
MCP Clients
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>"
]
}
}
}More Commerce MCP Servers
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Squarespace MCP Server 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
Squarespace MCP Server FAQ
Squarespace MCP server vs direct API integration — what's the difference?
A Squarespace MCP server and direct API integration serve different use cases. Direct API integration is for software-to-software — backend code calling Squarespace. A Squarespace 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 Squarespace at runtime. StackOne provides both.
How does Squarespace authentication work for AI agents?
Squarespace 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 Squarespace account; StackOne handles token exchange, storage, and refresh. Credentials never reach the LLM, and each user is isolated via
origin_owner_id.Are Squarespace MCP tools vulnerable to prompt injection?
Yes — Squarespace 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 Squarespace agent and how do I avoid it?
Context bloat happens when Squarespace tool schemas and API responses eat your Squarespace agent's memory, preventing it from reasoning effectively. A single Squarespace 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 Squarespace agent can access?
Yes — you can limit which actions your Squarespace 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 Squarespace MCP server?
Yes — you can create custom agent actions for your Squarespace MCP server using Connector Builder. It's an integration agent your coding assistant (Claude Code, Cursor, or Copilot) can invoke to research Squarespace's API, generate production-ready connector YAML, test against the live API, and validate before you ship.
When should I NOT use a Squarespace MCP server?
Skip a Squarespace MCP server if your integration is purely software-to-software — direct Squarespace 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 Squarespace actions at runtime.
What AI frameworks and AI clients does the StackOne Squarespace MCP server support?
The StackOne Squarespace 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.