Bill.com MCP Server
for AI Agents
Connect your AI agent to StackOne's Bill.com MCP server and give it 62 MCP tools out of the box. Auth, tool execution, and security all managed.
StackOne 
Coverage
62 Agent Actions
Create, read, update, and delete across Bill.com — and extend your agent's capabilities with custom actions.
Authentication
Agent Tool Authentication
Per-user OAuth in one call. Your Bill.com MCP server gets session-scoped tokens with zero credentials stored on your infra.
Agent Auth →
Security
Agent Protection
Every Bill.com 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 Bill.com call.
Tools Discovery →What is the Bill.com MCP Server?
A Bill.com MCP server lets AI agents read and write Bill.com data through the Model Context Protocol — Anthropic's open standard for connecting LLMs to external tools. StackOne's Bill.com MCP server ships with 62 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 Bill.com MCP Tools
Every action from Bill.com's API, ready for your agent. Create, read, update, and delete — scoped to exactly what you need.
Bank Accounts
- Create Bank Account
Register a new organization bank account for funding payments.
- List Bank Accounts
List organization bank accounts (funding accounts).
- Get Bank Account
Retrieve a single organization bank account.
Bills
- Create Bill
Create a new accounts-payable bill.
- List Bills
List accounts-payable bills in the organization.
- Get Bill
Retrieve a single bill by ID.
- Update Bill
Update an existing bill.
Chart Of Accounts
- Create Chart Of Account
Create a new GL account.
- List Chart Of Accounts
List GL chart of accounts.
- Get Chart Of Account
Retrieve a single chart-of-accounts entry by ID.
- Update Chart Of Account
Update an existing GL account.
Accounting Class
- Create Accounting Class
Create a new accounting class.
- Get Accounting Class
Retrieve a single accounting class by ID.
- Update Accounting Class
Update an existing accounting class.
Customers
- Create Customer
Create a new customer.
- List Customers
List customers in the organization.
- Get Customer
Retrieve a single customer by ID.
- Update Customer
Update an existing customer.
Departments
- Create Department
Create a new department.
- List Departments
List departments (a GL dimension).
- Get Department
Retrieve a single department by ID.
- Update Department
Update an existing department.
Invoices
- Create Invoice
Create a new AR invoice for a customer.
- Send Invoice
Email an invoice to the customer.
- List Invoices
List AR invoices in the organization.
- Get Invoice
Retrieve a single invoice by ID.
- Update Invoice
Update an existing invoice.
Items
- Create Item
Create a new item.
- List Items
List items (products/services).
- Get Item
Retrieve a single item by ID.
- Update Item
Update an existing item.
Locations
- Create Location
Create a new location.
- List Locations
List locations (a GL dimension).
- Get Location
Retrieve a single location by ID.
- Update Location
Update an existing location.
Payment Terms
- Create Payment Term
Create a new payment term for the organization.
- List Payment Terms
List payment terms for the organization.
- Get Payment Term
Retrieve a single payment term by ID.
- Update Payment Term
Update an existing payment term.
Payments
- Create Payment
Create a payment to a vendor (typically against a bill).
- List Payments
List AP payments in the organization.
- Get Payment
Retrieve a single payment by ID.
Vendor Bank Accounts
- Create Vendor Bank Account
Attach a bank account to a vendor for ACH/wire payment.
- Get Vendor Bank Account
Retrieve the bank account of a vendor.
- Delete Vendor Bank Account
Remove the vendor's bank account.
Vendors
- Create Vendor
Create a new vendor.
- List Vendors
List vendors in the organization.
- Get Vendor
Retrieve a single vendor by ID.
- Update Vendor
Update an existing vendor.
Other (13)
- List Accounting Classes
List accounting classes (a GL dimension).
- Get Session Info
Retrieve details about the current API session.
- Get International Payments Configuration
Retrieve the international-payments configuration for a given vendor country + currency + accountType.
- Archive Bill
Archive (soft-delete) a bill.
- Archive Chart Of Account
Archive (soft-delete) a GL account.
- Archive Accounting Class
Archive (soft-delete) an accounting class.
- Archive Customer
Archive (soft-delete) a customer.
- Archive Department
Archive (soft-delete) a department.
- Archive Invoice
Archive (soft-delete) an invoice.
- Archive Item
Archive (soft-delete) an item.
- Archive Location
Archive (soft-delete) a location.
- Cancel Payment
Cancel a scheduled payment.
- Archive Vendor
Archive (soft-delete) a vendor.
Bill.com AI Agent Use Cases
Connect your AI agent to Bill.com 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 Bill.com MCP Server in Minutes
One endpoint. Any framework. Your agent is talking to Bill.com 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 Accounting 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 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
Bill.com MCP Server FAQ
Does StackOne have a Bill.com MCP server?
Bill.com MCP server vs direct API integration — what's the difference?
How does Bill.com authentication work for AI agents?
origin_owner_id.Are Bill.com MCP tools vulnerable to prompt injection?
What is the context bloat of a Bill.com agent and how do I avoid it?
Can I limit which actions my Bill.com agent can access?
Can I create custom agent actions for my Bill.com MCP server?
When should I NOT use a Bill.com MCP server?
What AI frameworks and AI clients does the StackOne Bill.com 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.