Rillet MCP Server
for AI Agents
Connect your AI agent to StackOne's Rillet MCP server and give it 83 MCP tools out of the box. Auth, tool execution, and security all managed.
StackOne 
Coverage
83 Agent Actions
Create, read, update, and delete across Rillet — and extend your agent's capabilities with custom actions.
Authentication
Agent Tool Authentication
Per-user OAuth in one call. Your Rillet MCP server gets session-scoped tokens with zero credentials stored on your infra.
Agent Auth →
Security
Agent Protection
Every Rillet 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 Rillet call.
Tools Discovery →What is the Rillet MCP Server?
A Rillet MCP server lets AI agents read and write Rillet data through the Model Context Protocol — Anthropic's open standard for connecting LLMs to external tools. StackOne's Rillet MCP server ships with 83 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 Rillet MCP Tools
Every action from Rillet's API, ready for your agent. Create, read, update, and delete — scoped to exactly what you need.
Accounts
- Create Account
Create an account
- List Accounts
List all accounts
Bank Accounts
- Create Bank Account
Create a bank account
- Get Bank Account
Retrieve a bank account
- List Bank Accounts
List all bank accounts
- Delete Bank Account
Delete a bank account
Bank Transactions
- Create Bank Transaction
Create a bank transaction
- List Bank Transactions
List all bank transactions
- Get Bank Transaction
Retrieve a bank transaction
- Update Bank Transaction
Update a bank transaction
- Delete Bank Transaction
Delete a bank transaction
Bill Payments
- Create Bill Payment
Create a bill payment
- List Bill Payments
List bill payments
- Delete Bill Payment
Delete a bill payment
Bills
- Create Bill
Create a bill
- List Bills
List all bills
- Get Bill
Retrieve a bill
- Update Bill
Update a bill
- Delete Bill
Delete a bill
Charges
- Create Charge
Create a charge
- List Charges
List all charges
- Get Charge
Retrieve a charge
- Delete Charge
Delete a charge
Contracts
- Create Contract
Create a contract
- List Contracts
List all contracts
- Get Contract
Retrieve a contract
- Delete Contract
Delete a contract
Credit Memos
- Create Credit Memo
Create a credit memo
- List Credit Memos
List all credit memos
- Get Credit Memo
Retrieve a credit memo
- Update Credit Memo
Update a credit memo
- Delete Credit Memo
Delete a credit memo
Customers
- Create Customer
Create a customer
- List Customers
List all customers
- Get Customer
Retrieve a customer
- Update Customer
Update a customer
- Delete Customer
Delete a customer
Invoice Payments
- Create Invoice Payment
Create an invoice payment
- List Invoice Payments
List all invoice payments
- Update Invoice Payment
Update an invoice payment
- Delete Invoice Payment
Delete an invoice payment
Invoices
- Create Invoice
Create an invoice
- List Invoices
List all invoices
- Get Invoice
Retrieve the invoice
- Update Invoice
Update an invoice
- Delete Invoice
Delete an invoice
Journal Entrys
- Create Journal Entry
Create a journal entry
- Get Journal Entry
Retrieve a journal entry
- Update Journal Entry
Update a journal entry
- Delete Journal Entry
Delete a journal entry
Products
- Create Product
Create a product
- List Products
List all products
- Get Product
Retrieve a product
- Update Product
Update a product
- Delete Product
Delete a product
Reimbursements
- Create Reimbursement
Create a reimbursement
- List Reimbursements
List all reimbursements
- Get Reimbursement
Retrieve a reimbursement
- Delete Reimbursement
Delete a reimbursement
Vendor Credits
- Create Vendor Credit
Create a vendor credit
- List Vendor Credits
List all vendor credits
- Get Vendor Credit
Retrieve a vendor credit
- Update Vendor Credit
Update a vendor credit
- Delete Vendor Credit
Delete a vendor credit
Vendors
- Create Vendor
Create a vendor
- List Vendors
List all vendors
- Get Vendor
Retrieve a vendor
- Update Vendor
Update a vendor
- Delete Vendor
Delete a vendor
Other (14)
- List Custom Fields
Gets custom fields
- List Payments For Invoice
List payments for a given invoice
- List Journal Entries
List all journal entries
- Get API Key Information
Get API key information
- Get Organization
Retrieve the organization
- Get Subsidiary
Retrieve a subsidiary
- List Books
List all books
- List Subsidiaries
List all subsidiaries
- Get Balance Sheet Report
Retrieve balance sheet report
- Get Cash Flow Statement Report
Retrieve cash flow statement report
- Get Income Statement Report
Retrieve income statement report
- Get Trial Balance Report
Retrieve trial balance report
- List Tax Rates
List all tax rates
- Preview Contract Invoice Schedule
Preview the invoice schedule for a contract
Rillet AI Agent Use Cases
Connect your AI agent to Rillet and help your team scale the finance operations they run by hand today.
Automate invoice processing with AI agents connected to your ERP, accounting software, and AP tools through StackOne.
ViewUse StackOne to connect your AI agent to your accounting, CRM, and messaging systems to automate Accounts Receivable dunning and payment follow-up.
ViewUse StackOne to connect your AI agent to your accounting, email, and document management systems to automate invoice processing and purchase order matching.
ViewSet Up Your Rillet MCP Server in Minutes
One endpoint. Any framework. Your agent is talking to Rillet 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 finance-payments MCP Servers
100+ actions
70+ actions
68+ actions
62+ actions
60+ actions
52+ actions
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 Hundreds of Connector Builds Taught Us
MCP wraps APIs, it doesn't replace them. After building hundreds of connectors that serve both, here's when each approach wins.
14 min read
Rillet MCP Server FAQ
Does StackOne have a Rillet MCP server?
Rillet MCP server vs direct API integration — what's the difference?
How does Rillet authentication work for AI agents?
origin_owner_id.Are Rillet MCP tools vulnerable to prompt injection?
What is the context bloat of a Rillet agent and how do I avoid it?
Can I limit which actions my Rillet agent can access?
Can I create custom agent actions for my Rillet MCP server?
When should I NOT use a Rillet MCP server?
What AI frameworks and AI clients does the StackOne Rillet MCP server support?
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.