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JazzHR MCP Server
for AI Agents

Connect your AI agent to StackOne's JazzHR MCP server and give it 26 MCP tools out of the box. Auth, tool execution, and security all managed.

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JazzHR MCP Server
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Coverage

26 Agent Actions

Create, read, update, and delete across JazzHR — and extend your agent's capabilities with custom actions.

MCP Actions → Build Actions →

Authentication

Agent Tool Authentication

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

Agent Auth →

Security

Agent Protection

Every JazzHR 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 JazzHR call.

Tools Discovery →

What is the JazzHR MCP Server?

A JazzHR MCP server lets AI agents read and write JazzHR data through the Model Context Protocol — Anthropic's open standard for connecting LLMs to external tools. StackOne's JazzHR MCP server ships with 26 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 JazzHR MCP Tools

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

Jobs

  • Create Job

    Create a job in JazzHR

  • List Jobs

    List jobs from JazzHR

  • Get Job

    Get a job from JazzHR

Candidates

  • Create Candidate

    Create a candidate in JazzHR

  • List Candidates

    List candidates from JazzHR

  • Get Candidate

    Get a candidate from JazzHR

Applications

  • Create Application

    Create an application in JazzHR

  • List Applications

    List applications from JazzHR

  • Get Application

    Get an application from JazzHR

Users

  • List Users

    List users from JazzHR

  • Get User

    Get a user from JazzHR

Notes

  • Create Note

    Create a note for a candidate in JazzHR

Files

  • Upload File

    Upload a file to JazzHR

  • List Files

    List files from JazzHR

  • Get File

    Get a file from JazzHR

Activities

  • List Activities

    List activities from JazzHR

Activitys

  • Get Activity

    Get an activity from JazzHR

Categories

  • List Categories

    List categories from JazzHR

Categorys

  • Create Category

    Create a category in JazzHR

  • Get Category

    Get a category from JazzHR

Contacts

  • List Contacts

    List contacts from JazzHR

  • Get Contact

    Get a contact from JazzHR

Tasks

  • List Tasks

    List tasks from JazzHR

  • Get Task

    Get a task from JazzHR

Hires

  • List Hires

    List hires from JazzHR

Workflows

  • List Workflows

    List workflows from JazzHR

JazzHR AI Agent Use Cases

Connect your AI agent to JazzHR and help your team scale the recruiting operations they run by hand today.

Job Posting Distribution

Use StackOne to connect your AI agent to your ATS and job boards to automate job posting distribution.

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GreenhouseLeverAshbySmartRecruitersWorkableJobviteiCIMSTeamtailor
Reference Check Automation

Use StackOne to connect your AI agent to your ATS, survey tools, and messaging systems to automate reference checks.

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GreenhouseLeverWorkdayiCIMSSmartRecruitersAshbyTeamtailorSurveyMonkey
Offer Letter Generation

Use StackOne to connect your AI agent to your ATS, HRIS, and document management tools to automate offer letter generation.

View
GreenhouseLeverAshbyWorkdayBambooHRPersonioHiBobGusto
More Recruiting use cases

Set Up Your JazzHR MCP Server in Minutes

One endpoint. Any framework. Your agent is talking to JazzHR in under 10 lines of code.

MCP Clients

Claude Desktop setup guide
Claude Code setup guide
Cursor setup guide
Goose setup guide

Agent Frameworks

Claude Desktop
{
  "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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JobAdder

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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 200+ Connector Builds Taught Us

MCP wraps APIs, it doesn't replace them. After building 200+ connectors that serve both, here's when each approach wins.

14 min read

JazzHR MCP Server FAQ

Does StackOne have a JazzHR MCP server?
Yes. StackOne offers a hosted JazzHR MCP server with 26 pre-built actions, and every action is tested and QA'd by StackOne. Connect it to Claude, Cursor, and any other MCP client, or to any agent framework through the AI Action SDK. It ships with managed agent authentication, prompt injection defense, and tool discovery with server-side execution that preserve your agent's context window and keep reasoning performance.
JazzHR MCP server vs direct API integration — what's the difference?
A JazzHR MCP server and direct API integration serve different use cases. Direct API integration is for software-to-software — backend code calling JazzHR. A JazzHR 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 JazzHR at runtime. StackOne provides both.
How does JazzHR authentication work for AI agents?
JazzHR 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 JazzHR account; StackOne handles token exchange, storage, and refresh. Credentials never reach the LLM, and each user is isolated via origin_owner_id.
Are JazzHR MCP tools vulnerable to prompt injection?
Yes — JazzHR 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 JazzHR agent and how do I avoid it?
Context bloat happens when JazzHR tool schemas and API responses eat your JazzHR agent's memory, preventing it from reasoning effectively. A single JazzHR 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 JazzHR agent can access?
Yes — you can limit which actions your JazzHR 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 JazzHR MCP server?
Yes — you can create custom agent actions for your JazzHR MCP server using Connector Builder. It's an integration agent your coding assistant (Claude Code, Cursor, or Copilot) can invoke to research JazzHR's API, generate production-ready connector YAML, test against the live API, and validate before you ship.
When should I NOT use a JazzHR MCP server?
Skip a JazzHR MCP server if your integration is purely software-to-software — direct JazzHR 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 JazzHR actions at runtime.
What AI frameworks and AI clients does the StackOne JazzHR MCP server support?
The StackOne JazzHR 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.

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