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REST APIs

Property intelligence.
One request at a time.

Connect to HTAG through HTTP APIs and work with more than 100 endpoints covering market trends and risk, property history, H3 spatial metrics, demographics and geographic concordance.

01 / QUICKSTART

Your first locality lookup.

Start with a locality lookup to find the area identifier your market requests need. Replace the placeholder with your API key and run the request from your terminal or server.

cURL · locality lookup
curl "https://api.htagai.com/v1/reference/locality?name=Richmond&state_name=VIC&limit=5" \
  -H "x-api-key: YOUR_API_KEY"

Base URL: https://api.htagai.com/v1 · Authentication: x-api-key

Read the locality parameters ↗

Use the response in your application.

This Python example reads your API key from an environment variable and checks the response before using it.

Python · requests
import os
import requests

response = requests.get(
    "https://api.htagai.com/v1/reference/locality",
    params={"name": "Richmond", "state_name": "VIC", "limit": 5},
    headers={"x-api-key": os.environ["HTAG_API_KEY"]},
    timeout=30,
)
response.raise_for_status()
print(response.json())

Build with the endpoint contract.

Before you integrate

  • Check parameters, limits, pricing tiers and response fields for the endpoint you use.
  • Keep API keys on your server and in your secret store.
  • Handle missing records, rate limits and error responses.
  • Preserve source attribution where the dataset requires it.
  • Use the HtAG data dictionary for metric meanings, and retain each endpoint’s statistic, geography, units and reporting window.

Use the developer workspace to test authenticated calls, explore response schemas and monitor usage.

Open the playground ↗
BUILD WITH THE DATA

From a response to a useful product.

Market research

Bring market trends and risk data into internal research tools, reports and decision workflows.

Property context

Use property history alongside other data in your application to give users clearer context.

Spatial analysis

Combine H3 spatial metrics, demographics and geographic concordance for location-based analysis.

Data integration

Connect HTAG data to your existing services and processing pipelines through standard HTTP requests.

Your next build starts here.

Create a developer account and explore the data behind your idea.