Greenhouse - Harvest v3 MCP Server
for AI Agents
Connect your AI agent to StackOne's Greenhouse - Harvest v3 MCP server and give it 99 MCP tools out of the box. Auth, tool execution, and security all managed.
StackOne 
Coverage
99 Agent Actions
Create, read, update, and delete across Greenhouse - Harvest v3 — and extend your agent's capabilities with custom actions.
Authentication
Agent Tool Authentication
Per-user OAuth in one call. Your Greenhouse - Harvest v3 MCP server gets session-scoped tokens with zero credentials stored on your infra.
Agent Auth →
Security
Agent Protection
Every Greenhouse - Harvest v3 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 Greenhouse - Harvest v3 call.
Tools Discovery →What is the Greenhouse - Harvest v3 MCP Server?
A Greenhouse - Harvest v3 MCP server lets AI agents read and write Greenhouse - Harvest v3 data through the Model Context Protocol — Anthropic's open standard for connecting LLMs to external tools. StackOne's Greenhouse - Harvest v3 MCP server ships with 99 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 Greenhouse - Harvest v3 MCP Tools
Every action from Greenhouse - Harvest v3's API, ready for your agent. Create, read, update, and delete — scoped to exactly what you need.
Applications
- Create Application
Create a new application for an existing candidate linked to specific jobs
- List Applications
Retrieve all applications with optional filtering by candidate, job, status, dates, and more
- Update Application
Modify an existing job application by updating its source, referrer, recruiter, coordinator, custom fields, or prospect pool assignment
- Move Application
Advance an application to a different interview stage or transfer it to another job posting
- Delete Application
Permanently delete a candidate application from Greenhouse. Cannot delete prospect applications.
Attachments
- Create Attachment
Create a new attachment in Greenhouse by uploading base64 encoded file content.
- List Attachments
Retrieve all attachments from Greenhouse with optional filtering.
- Delete Attachment
Delete an attachment from Greenhouse by its ID.
Candidates
- Create Candidate
Create a new candidate in Greenhouse with optional applications
- List Candidates
Retrieve a paginated list of candidates from Greenhouse with optional filters
- Update Candidate
Update an existing candidate in Greenhouse
- Delete Candidate
Permanently delete a candidate from Greenhouse
Candidate Educations
- Create Candidate Education
Add education entry to a candidate profile
- List Candidate Educations
Retrieve a paginated list of education records for candidates
- Delete Candidate Education
Delete a candidate's education entry permanently
Candidate Employments
- Create Candidate Employment
Add employment/work history entry to a candidate profile
- List Candidate Employments
Retrieve a paginated list of employment/work history records for candidates
- Delete Candidate Employment
Delete a candidate's employment entry permanently
Candidate Tags
- Create Candidate Tag
Create a new tag for labeling candidates
- List Candidate Tags
Retrieve a paginated list of candidate tags
- Delete Candidate Tag
Delete a candidate tag permanently
Applied Candidate Tags
- Create Applied Candidate Tag
Apply an existing tag to a candidate
- List Applied Candidate Tags
Retrieve a paginated list of tags applied to candidates
- Delete Applied Candidate Tag
Remove a tag from a candidate permanently
Departments
- Create Department
Create a new department in Greenhouse. Department names must be unique - submitting a duplicate name will return an error.
- List Departments
Retrieve all departments from Greenhouse with optional filtering.
- Update Department
Update an existing department in Greenhouse by ID.
Interviews
- Create Interview
Schedule a new interview for a candidate application in Greenhouse
- List Interviews
Get a list of scheduled interviews from Greenhouse
- Update Interview
Update an existing scheduled interview in Greenhouse
- Delete Interview
Delete a scheduled interview from Greenhouse
Jobs
- Create Job
Create a new job in Greenhouse
- List Jobs
Get a list of jobs from Greenhouse
- Update Job
Update an existing job in Greenhouse
Job Posts
- List Job Posts
Get a list of job posts from Greenhouse
- Update Job Post
Update a job post in Greenhouse
Job Hiring Managers
- Add Job Hiring Manager
Add a hiring manager to a job
- List Job Hiring Managers
Get hiring managers for jobs
- Remove Job Hiring Manager
Remove a hiring manager from a job
Job Owners
- Add Job Owner
Add an owner to a job (recruiter, sourcer, or coordinator)
- List Job Owners
Get job owners (recruiters, sourcers, coordinators)
- Remove Job Owner
Remove an owner from a job
Job Notes
- Create Job Note
Add a note to a job
- List Job Notes
Get notes for jobs
- Update Job Note
Update an existing job note
- Delete Job Note
Delete a job note
Openings
- Create Opening
Create a new opening (headcount slot) for a job in Greenhouse
- List Openings
Get a list of job openings from Greenhouse
- Update Opening
Update an existing opening (headcount slot) in Greenhouse
- Delete Opening
Permanently delete an opening (headcount slot) from Greenhouse
Notes
- Create Note
Create a new note on a candidate in Greenhouse.
- List Notes
Retrieve all notes from Greenhouse with optional filtering.
Offers
- Create Offer
Create a new job offer for a candidate's application in Greenhouse.
- List Offers
Retrieve all offers from Greenhouse with optional filtering by IDs, applications, jobs, candidates, status, or dates.
- Update Offer
Update an existing offer in Greenhouse by ID.
Offices
- Create Office
Create a new office in Greenhouse.
- List Offices
Retrieve all offices from Greenhouse with optional filtering.
- Update Office
Update an existing office in Greenhouse.
Users
- Create User
Create a new user in Greenhouse
- List Users
Get a list of users from Greenhouse (v3 API)
- Update User
Update an existing user in Greenhouse
User Job Permissions
- Create User Job Permission
Grant a user access to a specific job with a defined permission role in Greenhouse
- List User Job Permissions
Get user's job permissions
- Delete User Job Permission
Remove a user's access to a specific job by deleting their job permission record
Other (35)
- Create Prospect Application
Create a new application for an existing candidate (prospect or candidate workflow)
- Create Attachment From URL
Create a new attachment in Greenhouse by providing a publicly accessible URL.
- List Application Stages
Retrieve the interview stage history for applications showing which pipeline stages they have passed through
- List Custom Fields
Retrieve all custom fields from Greenhouse with optional filtering.
- List Custom Field Options
Retrieve all custom field options from Greenhouse with optional filtering.
- List Email Templates
Retrieve all email templates from Greenhouse with optional filtering.
- List Interviewers
Get interviewer assignments and response statuses from Greenhouse
- List Interviewer Tags
Get tags that can be applied to interviewers in Greenhouse
- List Default Interviewers
Get default interviewer assignments for interview kits in Greenhouse
- List Interview Kits
Get interview kit configurations from Greenhouse
- List Scorecards
Get interview scorecards from Greenhouse
- List Scorecard Questions
Get questions configured for scorecards
- List Scorecard Question Options
Get answer options for scorecard questions
- List Scorecard Question Answers
Get answers submitted for scorecard questions
- List Job Post Locations
Get locations for job posts
- List Job Interview Stages
Retrieve job interview stages from Greenhouse to understand hiring pipeline structure
- List Job Interviews
Retrieve job interview definitions from Greenhouse to understand interview types and scheduling requirements
- List Prospect Pools
Retrieve all prospect pools from Greenhouse with optional filtering.
- List Prospect Details
Retrieve all prospect details from Greenhouse with optional filtering.
- List Prospect Stages
Retrieve all prospect pool stages from Greenhouse with optional filtering.
- List Close Reasons
Retrieve job close reasons from Greenhouse to understand why positions were closed
- List Rejection Reasons
Retrieve rejection reasons from Greenhouse to understand why candidates were rejected
- List Rejection Details
Retrieve detailed rejection information including custom field answers for rejected applications
- List Referrers
Retrieve referrers from Greenhouse to track employee referral sources
- List Sources
Retrieve candidate sources from Greenhouse to understand where applicants originate
- List Tracking Links
Retrieve tracking links from Greenhouse for job board and referral attribution
- List User Roles
Get user role definitions from Greenhouse
- Reject Application
Reject a candidate application with optional rejection reason, notes, and email notification
- Unreject Application
Restore a previously rejected application back to active status
- Hire Application
Complete the hiring process by marking an application as hired with optional start date and opening details
- Convert Prospect To Candidate
Transform a prospect from the talent pool into an active job applicant
- Merge Candidates
Merge a secondary candidate into a primary candidate record
- Activate User
Re-enable a previously deactivated user account in Greenhouse, restoring their system access
- Deactivate User
Disable a user account in Greenhouse, preventing login while preserving all historical data
- Revoke User Permissions
Remove all job-level permissions from a user in a single bulk operation
Greenhouse - Harvest v3 AI Agent Use Cases
Connect your AI agent to Greenhouse - Harvest v3 and help your team scale the recruiting operations they run by hand today.
Use StackOne to connect your AI agent to your ATS and job boards to automate job posting distribution.
ViewUse StackOne to connect your AI agent to your ATS, survey tools, and messaging systems to automate reference checks.
ViewUse StackOne to connect your AI agent to your ATS, HRIS, and document management tools to automate offer letter generation.
ViewSet Up Your Greenhouse - Harvest v3 MCP Server in Minutes
One endpoint. Any framework. Your agent is talking to Greenhouse - Harvest v3 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>"
]
}
}
}Greenhouse - Harvest v3 Resources
How I Built an AI Hiring Analyst in Under an Hour
A Head of People connected Claude to Ashby through StackOne's MCP gateway to answer hiring questions from real-time data via chat. No code required.
5 min read
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
Greenhouse - Harvest v3 MCP Server FAQ
Does StackOne have a Greenhouse - Harvest v3 MCP server?
Greenhouse - Harvest v3 MCP server vs direct API integration — what's the difference?
How does Greenhouse - Harvest v3 authentication work for AI agents?
origin_owner_id.Are Greenhouse - Harvest v3 MCP tools vulnerable to prompt injection?
What is the context bloat of a Greenhouse - Harvest v3 agent and how do I avoid it?
Can I limit which actions my Greenhouse - Harvest v3 agent can access?
Can I create custom agent actions for my Greenhouse - Harvest v3 MCP server?
When should I NOT use a Greenhouse - Harvest v3 MCP server?
What AI frameworks and AI clients does the StackOne Greenhouse - Harvest v3 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.