This guide will help you create a Harvest API key in Greenhouse for integration purposes.
Step 1: Log in to Greenhouse
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Go to the Greenhouse login page:
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Enter your email and password.
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Click Sign In to access your Greenhouse dashboard.
Note: You must have Site Admin permissions to create API keys.
Step 2: Open Dev Center
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In the top right corner, click the Settings (⚙️ icon).

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In the left sidebar, scroll down to the Dev Center section.
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Click on Dev Center

Step 3: Open API Credential Management
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Inside Dev Center, click API Credential Management

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You will see multiple API types:
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Harvest API
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Job Board API
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Ingestion API
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Step 4: Create a New Harvest API Key
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Click Create New API credentials( top right corner)

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Fill in the following details:
API Type: Harvest
Partner: Custom

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Click Manage Permissions
Step 6: Copy and Save the API Key
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Your new API key will be created.
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Copy the API key immediately.
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Store it securely.
Important: You may not be able to see the full API key again later.
Step 7: Select Harvest V3 Permissions
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After storing the API key, scroll down to the Manage Permissions section.
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In the permissions page, locate and select Harvest V3 and click Save

Notes
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Each integration should ideally use its own API key.
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Keep your API key secure.
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Do not share it publicly.