Chargify (Maxio) MCP Server
for AI Agents

Q: What AI frameworks and AI clients does the StackOne Chargify (Maxio) MCP server support?

The StackOne Chargify (Maxio) 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.

Production-ready Chargify (Maxio) MCP server with 118 extensible actions — plus built-in authentication, security, and optimized execution.

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Chargify (Maxio) MCP Server

Built by

StackOne

Coverage

118 Agent Actions

Create, read, update, and delete across Chargify (Maxio) — and extend your agent's capabilities with custom actions.

MCP Actions → Create Actions →

Authentication

Agent Tool Authentication

Per-user OAuth in one call. Your Chargify (Maxio) MCP server gets session-scoped tokens with zero credentials stored on your infra.

Agent Auth →

Security

Agent Protection

Every Chargify (Maxio) 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 Chargify (Maxio) call.

Tools Discovery →

What is the Chargify (Maxio) MCP Server?

A Chargify (Maxio) MCP server lets AI agents read and write Chargify (Maxio) data through the Model Context Protocol — Anthropic's open standard for connecting LLMs to external tools. StackOne's Chargify (Maxio) MCP server ships with 118 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 Chargify (Maxio) MCP Tools and Actions

Every action from Chargify (Maxio)'s API, ready for your agent. Create, read, update, and delete — scoped to exactly what you need.

Components

List Components
Retrieve a list of all components across product families
Update Component
Update an existing component by ID

Coupons

Create Coupon
Create a new coupon for a product family
List Coupons
Retrieve a list of all coupons for the site
Update Coupon
Update an existing coupon by ID

Metafields

Create Metafields
Create metafields for a resource type
List Metafields
Retrieve a paginated list of metafields for a resource type
Update Metafield
Update a metafield for a resource type
Delete Metafield
Delete a metafield for a resource type

Metadatas

Create Metadata
Create metadata for a specific resource
List Metadata
Retrieve a paginated list of metadata for a specific resource
Update Metadata
Update metadata for a specific resource
Delete Metadata
Delete metadata for a specific resource

Customers

Create Customer
Create a new customer
List Customers
Retrieve a list of all customers
Update Customer
Update an existing customer by ID
Delete Customer
Delete a customer by ID

Invoices

Create Invoice
Create a one-off invoice for a subscription
Send Invoice
Send an invoice to the customer via email
List Invoices
Retrieve a paginated list of invoices

Prepayments

Create Prepayment
Create a prepayment for a subscription
List Prepayments
Retrieve a paginated list of prepayments for a subscription

Offers

Create Offer
Create a new offer
List Offers
Retrieve a paginated list of offers

Payment Profiles

Create Payment Profile
Create a new payment profile for a customer
List Payment Profiles
Retrieve a list of all payment profiles for the site
Update Payment Profile
Update an existing payment profile by ID

Products

Create Product
Create a new product within a product family
List Products
Retrieve a list of all products
Update Product
Update an existing product by ID

Product Price Points

Create Product Price Point
Create a new price point for a product
List Product Price Points
Retrieve a paginated list of price points for a product

Proforma Invoices

Create Proforma Invoice
Create a proforma invoice for a subscription
List Proforma Invoices
Retrieve a paginated list of proforma invoices for a subscription

Reason Codes

Create Reason Code
Create a new churn reason code
List Reason Codes
Retrieve a paginated list of reason codes for the site
Update Reason Code
Update an existing churn reason code
Delete Reason Code
Delete an existing churn reason code

Subscription Components

List Subscription Components
Retrieve a list of components associated with a subscription
Get Subscription Component
Retrieve a single component associated with a subscription

Usages

Create Usage
Create a usage record for a metered component on a subscription
List Usages
Retrieve a list of usage records for a metered component on a subscription

Subscription Groups

Create Subscription Group
Create a new subscription group
List Subscription Groups
Retrieve a paginated list of subscription groups for the site
Delete Subscription Group
Delete a subscription group by UID

Subscription Notes

Create Subscription Note
Create a new note for a subscription
List Subscription Notes
Retrieve a paginated list of notes for a subscription

Subscriptions

Create Subscription
Create a new subscription for a customer with a specified product
List Subscriptions
Retrieve a paginated list of all subscriptions for the site
Update Subscription
Update an existing subscription by its ID

Endpoints

Create Endpoint
Create a new webhook endpoint for the site.
List Endpoints
Returns created endpoints for a site.
Update Endpoint
Update an existing webhook endpoint for the site.

Other (65)

Create Metered Component
Create a new metered component for a product family
Create Quantity-Based Component
Create a new quantity-based component for a product family
Create On/Off Component
Create a new on/off component for a product family
Create Product Family
Create a new product family
List Metadata For Resource Type
Retrieve a paginated list of all metadata for a resource type
List Customer Subscriptions
Retrieve all subscriptions for a specific customer
List Events
Retrieve a list of events for the site
List Subscription Events
Retrieve a list of events for a specific subscription
List Credit Notes
Retrieve a paginated list of credit notes
List Invoice Events
Retrieve a paginated list of invoice events
List Product Families
Retrieve a list of all product families
List Allocations
Retrieve a list of allocations for a component on a subscription
List Webhooks
Retrieve a list of webhooks for the site
Update Automatic Subscription Resumption
Update the automatic resumption date for a paused subscription
Delete Unused Payment Profile
Delete an unused payment profile by ID
Remove Coupon From Subscription
Remove a coupon from an existing subscription
Enable Billing Portal
Enable the billing portal for a customer
Read Billing Portal Link
Retrieve the billing portal management link for a customer
Read Component
Retrieve a single component by product family and component ID
Archive Component
Archive a component by product family and component ID
Archive Coupon
Archive an existing coupon by ID
Read Coupon
Retrieve a single coupon by ID
Find Coupon
Find a coupon by code
Validate Coupon
Validate whether a coupon code is valid
Read Customer
Retrieve a single customer by ID
Read Customer By Reference
Look up a customer by their unique reference value
Read Invoice
Retrieve a single invoice by UID
Void Invoice
Void an invoice by UID
Refund Invoice
Issue a refund for an invoice by UID
Refund Invoice Consolidated
Issue a refund for an invoice by UID
Record Payment For Invoice
Record a payment for an invoice by UID
Read Credit Note
Retrieve a single credit note by UID
Record Payment For Multiple Invoices
Record a payment across multiple invoices
Reopen Invoice
Reopen a previously voided or cancelled invoice
Issue Invoice
Issue a pending invoice by UID
Read Account Balances
Retrieve the account balances for a subscription
Issue Service Credit
Issue a service credit for a subscription
Read Offer
Retrieve a single offer by ID
Archive Offer
Archive an existing offer
Unarchive Offer
Unarchive a previously archived offer
Read Payment Profile
Retrieve a single payment profile by ID
Read Product
Retrieve a single product by ID
Archive Product
Archive a product by ID
Read Product Family
Retrieve a single product family by ID
Read Reason Code
Retrieve a single reason code by its ID
Read Site
Retrieve the current site details
Allocate Component
Create an allocation for a component on a subscription
Read Subscription Group
Retrieve a single subscription group by UID
Read Subscription
Retrieve the details of a single subscription by its ID
Cancel Subscription
Cancel an active subscription by its ID
Find Subscription
Look up a subscription by its reference value
Reactivate Subscription
Reactivate a canceled or expired subscription
Pause Subscription
Place a subscription on hold to temporarily pause billing
Resume Subscription
Resume a paused subscription to restart billing
Activate Subscription
Activate a subscription that is in an inactive state
Retry Subscription
Retry a failed subscription payment
Initiate Delayed Cancellation
Schedule a subscription for cancellation at the end of the current billing period
Cancel Delayed Cancellation
Remove a scheduled delayed cancellation from a subscription
Cancel Dunning
Cancel the dunning process for a past-due subscription
Preview Subscription
Preview a new subscription before creating it
Preview Renewal
Preview the next renewal for a subscription
Apply Coupon To Subscription
Apply a coupon code to an existing subscription
Migrate Subscription Product
Migrate a subscription to a different product or price point
Replay Endpoint
Replay a webhook endpoint for the site.
Enable Webhooks
Enable webhook endpoints for the site.

Set Up Your Chargify (Maxio) MCP Server in Minutes

One endpoint. Any framework. Your agent is talking to Chargify (Maxio) in under 10 lines of code.

MCP Clients

Agent Frameworks

Claude Desktop-

JSON

Docs

{
  "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>"
      ]
    }
  }
}

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Chargify (Maxio) 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

Chargify (Maxio) MCP Server FAQ

Chargify (Maxio) MCP server vs direct API integration — what's the difference?

A Chargify (Maxio) MCP server and direct API integration serve different use cases. Direct API integration is for software-to-software — backend code calling Chargify (Maxio). A Chargify (Maxio) 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 Chargify (Maxio) at runtime. StackOne provides both.

How does Chargify (Maxio) authentication work for AI agents?

Chargify (Maxio) 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 Chargify (Maxio) account; StackOne handles token exchange, storage, and refresh. Credentials never reach the LLM, and each user is isolated via origin_owner_id.

Are Chargify (Maxio) MCP tools vulnerable to prompt injection?

Yes — Chargify (Maxio) 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 Chargify (Maxio) agent and how do I avoid it?

Context bloat happens when Chargify (Maxio) tool schemas and API responses eat your Chargify (Maxio) agent's memory, preventing it from reasoning effectively. A single Chargify (Maxio) 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 Chargify (Maxio) agent can access?

Yes — you can limit which actions your Chargify (Maxio) 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 Chargify (Maxio) MCP server?

Yes — you can create custom agent actions for your Chargify (Maxio) MCP server using Connector Builder. It's an integration agent your coding assistant (Claude Code, Cursor, or Copilot) can invoke to research Chargify (Maxio)'s API, generate production-ready connector YAML, test against the live API, and validate before you ship.

When should I NOT use a Chargify (Maxio) MCP server?

Skip a Chargify (Maxio) MCP server if your integration is purely software-to-software — direct Chargify (Maxio) 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 Chargify (Maxio) actions at runtime.

What AI frameworks and AI clients does the StackOne Chargify (Maxio) MCP server support?

The StackOne Chargify (Maxio) 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.

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Chargify (Maxio) MCP Serverfor AI Agents