Jaz MCP Server
for AI Agents
Connect your AI agent to StackOne's Jaz MCP server and give it 79 MCP tools out of the box. Auth, tool execution, and security all managed.
StackOne 
Coverage
79 Agent Actions
Agents can read, write and delete in Jaz. Extend your agent's capabilities with custom actions.
Authentication
Agent Tool Authentication
Per-user OAuth in one call. Your Jaz MCP server gets session-scoped tokens with zero credentials stored on your infra.
Agent Auth →
Security
Agent Protection
Every Jaz tool response scanned for prompt injection in milliseconds, with 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 Jaz call.
Tools Discovery →What is the Jaz MCP Server?
A Jaz MCP server lets AI agents read and write Jaz data through the Model Context Protocol, Anthropic's open standard for connecting LLMs to external tools. StackOne's Jaz MCP server ships with 79 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 Jaz MCP Tools
Every StackOne action for Jaz, ready for your agent. Read, write and delete, scoped to exactly what you need.
Bills
- Create Bill
Create a bill.
- List Bills
List the organization's bills, paginated.
- Get Bill
Get a single bill by its resource ID.
- Update Bill
Update an existing bill.
Direct Cash-Ins
- Create Direct Cash-In
Record a cash-in entry.
- List Direct Cash-In
List the organization's cash-in entries, paginated.
- Get Direct Cash-In
Get a single cash-in entry by its resource ID.
- Update Direct Cash-In
Update an existing cash-in entry.
Direct Cash-Outs
- Create Direct Cash-Out
Record a cash-out entry.
- List Direct Cash-Out
List the organization's cash-out entries, paginated.
- Get Direct Cash-Out
Get a single cash-out entry by its resource ID.
- Update Direct Cash-Out
Update an existing cash-out entry.
Chart Of Accounts
- Create Chart Of Account
Create an account in the chart of accounts.
- List Chart Of Accounts
List the organization's chart of accounts, paginated.
- Get Chart Of Account
Get a single account by its resource ID.
- Update Chart Of Account
Update an existing account.
Contact Groups
- Create Contact Group
Create a contact group.
- List Contact Groups
List the organization's contact groups, paginated.
- Get Contact Group
Get a single contact group by its resource ID.
- Update Contact Group
Update an existing contact group.
- Delete Contact Group
Delete the contact group.
Contacts
- Create Contact
Create a contact.
- List Contacts
List the organization's contacts, paginated.
- Get Contact
Get a single contact by its resource ID.
- Update Contact
Update an existing contact.
- Delete Contact
Delete the contact.
Invoices
- Create Invoice
Create an invoice.
- List Invoices
List the organization's invoices, paginated.
- Get Invoice
Get a single invoice by its resource ID.
- Update Invoice
Update an existing invoice.
Journals
- Create Journal
Create a journal.
- List Journals
List the organization's journals, paginated.
- Get Journal
Get a single journal by its resource ID.
- Update Journal
Update an existing journal.
Purchase Orders
- Create Purchase Order
Create a purchase order.
- List Purchase Orders
List the organization's purchase orders, paginated.
- Get Purchase Order
Get a single purchase order by its resource ID.
- Update Purchase Order
Update an existing purchase order.
- Delete Purchase Order
Permanently delete the purchase order.
Purchase Requests
- Create Purchase Request
Create a purchase request.
- List Purchase Requests
List the organization's purchase requests, paginated.
- Get Purchase Request
Get a single purchase request by its resource ID.
- Update Purchase Request
Update an existing purchase request.
- Delete Purchase Request
Permanently delete the purchase request.
Organization Report Templates
- List Organization Report Templates
List the organization's report templates.
- Get Organization Report Template
Get a single report template by its resource ID.
Tax Profiles
- Create Tax Profile
Create a tax profile.
- List Tax Profiles
List the organization's tax profiles, paginated.
- Get Tax Profile
Get a single tax profile by its resource ID.
- Update Tax Profile
Update an existing tax profile.
- Delete Tax Profile
Delete the tax profile.
Other (28)
- List Account Classifications
List the available account classifications.
- Search Claims
Search claims in the caller's organization using the standard {filter, sort} envelope plus limit/offset.
- List Customer Credit Notes
List the organization's customer credit notes, paginated.
- List Supplier Credit Notes
List the organization's supplier credit notes, paginated.
- Search Custom Fields
Search custom fields with filters, sort, and pagination.
- Search Tags
Search tags with filters, sort, and pagination.
- Get Organization Details
Get the organization's details.
- List Sale Orders
List the organization's sale orders, paginated.
- List Sale Quotes
List the organization's sale quotes, paginated.
- List Tax Types
List the available tax types.
- Delete A Chart Of Account
Delete the account.
- Bulk Approve Bills
Dispatch a background job that approves many bills awaiting approval.
- Bulk Request Changes On Bills
Dispatch a background job that sends many submitted bills back to their creators with one shared message.
- Void Or Delete Bill
Void an active bill, or void and permanently delete it when force is true.
- Bulk Approve Claims
Dispatch a background job to approve many claims.
- Bulk Request Changes On Claims
Dispatch a background job that sends many submitted claims back to their employees with one shared message.
- Bulk Approve Customer Credit Notes
Dispatch a background job that approves many customer credit notes awaiting approval.
- Bulk Request Changes On Customer Credit Notes
Dispatch a background job that sends many submitted customer credit notes back to their creators with one shared message.
- Bulk Approve Supplier Credit Notes
Dispatch a background job that approves many supplier credit notes awaiting approval.
- Bulk Request Changes On Supplier Credit Notes
Dispatch a background job that sends many submitted supplier credit notes back to their creators with one shared message.
- Bulk Approve Invoices
Dispatch a background job that approves many invoices awaiting approval.
- Bulk Request Changes On Invoices
Dispatch a background job that sends many submitted invoices back to their creators with one shared message.
- Void Or Delete Invoice
Void an active invoice, or void and permanently delete it when force is true.
- Void Or Delete Journal
Void an active or reversed journal, or void and permanently delete it when force is true.
- Bulk Request Changes On Purchase Orders
Dispatch a background job that sends many confirmed purchase orders back for edits with one shared message.
- Bulk Request Changes On Purchase Requests
Dispatch a background job that sends many accepted purchase requests back for edits with one shared message.
- Bulk Request Changes On Sale Orders
Dispatch a background job that sends many confirmed sale orders back for edits with one shared message.
- Bulk Request Changes On Sale Quotes
Dispatch a background job that sends many accepted sale quotes back for edits with one shared message.
Jaz AI Agent Use Cases
Connect your AI agent to Jaz 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 Jaz MCP Server in Minutes
One endpoint. Any framework. Your agent is talking to Jaz 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
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Platform Resources
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
Jaz MCP Server FAQ
Does StackOne have a Jaz MCP server?
Jaz MCP server vs direct API integration: what's the difference?
How does Jaz authentication work for AI agents?
origin_owner_id.Are Jaz MCP tools vulnerable to prompt injection?
What is the context bloat of a Jaz agent and how do I avoid it?
Can I limit which actions my Jaz agent can access?
Can I create custom agent actions for my Jaz MCP server?
When should I NOT use a Jaz MCP server?
What AI frameworks and AI clients does the StackOne Jaz 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.