Introduction

If you're building a scalable talent workflow, access to reliable, structured applicant data is non-negotiable. JazzHR’s ATS API gives you exactly that, candidate records, job-linked applications, and metadata developers rely on for downstream automation.

This guide breaks down how to fetch job application data from the JazzHR ATS API in a clean, developer-first way. It’s part of our broader deep-dive series on JazzHR integrations, covering authentication, rate limits, sync patterns, and more.

For the full ATS API guide, visit here.

Prerequisites

• JazzHR account with API access enabled
• Valid API key
• Python environment with requests installed

Key API Endpoints

• Get a single candidate: GET /candidates/{candidate_id}
• Get all candidates: GET /candidates

Step-by-Step Guide

1. Set Up Your Environment

import requests

2. Define Your API Key

api_key = "your_api_key_here"

3. Fetch a Single Candidate

def get_single_candidate(candidate_id):
    url = f"https://api.jazzhr.com/v1/candidates/{candidate_id}"
    headers = {"Authorization": f"Bearer {api_key}"}
    response = requests.get(url, headers=headers)
    return response.json()

4. Fetch All Candidates

def get_all_candidates():
    url = "https://api.jazzhr.com/v1/candidates"
    headers = {"Authorization": f"Bearer {api_key}"}
    response = requests.get(url, headers=headers)
    return response.json()

Pitfalls to Watch Out For

Teams often underestimate the operational friction in production-grade ATS integrations. Keep an eye on:

• Silent auth failures when tokens are outdated or misconfigured
• Rate limit throttling, especially when bulk-pulling candidate lists
• Incomplete pagination handling, leading to missing candidates
• Large payload overhead, which can slow down downstream systems
• Field variability across candidates, making schema mapping tricky
• Deprecated endpoints, particularly in older JazzHR accounts
• Data privacy obligations, especially around PII and storage locations

FAQs

How do I get my JazzHR API key?
From your JazzHR admin console or via JazzHR support.

Can I filter candidates by job or status?
Yes. Use query parameters such as job ID, stage, and date filters.

Does JazzHR support pagination?
Yes. Use the pagination parameters to iterate through large datasets.

Is there a sandbox environment?
JazzHR may provide controlled access, confirm with their support team.

What format does the API return?
JSON is the standard response format.

Can I update candidate records via API?
JazzHR exposes PUT/POST endpoints for updates when permitted by your plan.

What should I do if I hit rate limits?
Implement retry logic with backoff or shift to periodic syncs rather than real-time pulls.

How Knit Simplifies JazzHR API Integration

If your engineering team is tired of managing JazzHR ATS API authentication, token handling, endpoint maintenance, and candidate sync logic, Knit takes the heavy lifting out of the equation. A single integration with Knit gives you streamlined, ready-to-consume JazzHR data pipelines, no ongoing maintenance, no breaking changes, and no integration debt piling up.