M
API Matrix

Open Government, USA API

⭐ Beginner's Pick Government / No Auth Required Beginner HTTPS
Free to Use Varies (check documentation)
82 Score
Grade A
Visit Official Site Compare Alternatives

Overview

The USA Government Open Data API (data.gov) gives free access to hundreds of thousands of datasets from US federal agencies covering topics like climate, health, energy, and finance. It is built on CKAN and requires no API key for searching and browsing. It is one of the best open data portals for beginners due to its massive scale and excellent documentation.

💡

Beginner Tip

Start at catalog.data.gov/api/3/action/package_search to discover datasets — look for resources with res_format:JSON or res_format:CSV for the easiest programmatic access.

Available Data

Open Government, USA data via REST API
JSON-formatted response data
Freely accessible without authentication

Example Response

JSON Response 
{
  "status": "success",
  "data": {
    "result": "Data from Open Government, USA",
    "description": "United States Government Open Data",
    "timestamp": "2025-01-15T10:00:00Z"
  }
}

Field Reference

success Whether the catalog API call succeeded
result.results Array of dataset metadata objects matching the search
result.count Total number of matching datasets across all federal agencies
result.results[].title Dataset title as provided by the publishing agency
result.results[].resources List of files attached to the dataset with format, URL, and description
result.results[].organization.name Slug identifier of the federal agency that owns the dataset

Implementation Example 

const url = "https://www.data.gov/";
const response = await fetch(url);
if (!response.ok) throw new Error(`Request failed: ${response.status}`);
const data = await response.json();
console.log(data);

What Can You Build?

Note: These code examples are AI-generated and unverified. Always refer to the official API documentation for accurate usage.

Common Errors & Troubleshooting

Timeout on large package_search request The data.gov catalog is enormous and unfiltered queries can be slow
✓ Add filters like fq=res_format:JSON to limit scope, and always use the rows parameter with start for pagination
Resource URL returns redirect loop or 403 Many dataset files are hosted on agency servers that have independent access controls
✓ Try the data.gov dataset page directly in a browser first; some files require agency registration or are restricted
JSON parse error on resource file download Some resources labeled as JSON are actually GeoJSON or non-standard formats
✓ Check the format field in the resource object and use appropriate parsers such as geopandas for GeoJSON

Matrix Score Breakdown

🌐 Reachability 30/30
⚡ Speed 15/20
🔒 Security 15/15
🛠 Developer XP 15/20
✓ Reliability 7/15
Response Time 224ms

Fully tested on Apr 5, 2026

Technical Specifications

Auth No Auth
HTTPS REQUIRED
CORS UNKNOWN
Category Government
Difficulty Beginner
Verified: 2026-04-07

Similar APIs

View All →

Bank Negara Malaysia Open Data

⭐ Beginner's Pick
82

Bank Negara Malaysia Open Data provides free access to official financial data published by Malaysia's central bank, including exchange rates, interest rates, and key economic indicators.

No Auth Beginner HTTPS 449ms

BCLaws

77

BCLaws gives you free access to the full text of British Columbia's laws and regulations.

No Auth Beginner 145ms

Brazil

⭐ Beginner's Pick
92

BrasilAPI is a free, community-driven API that centralizes public data about Brazil in one easy-to-use place.

No Auth Beginner HTTPS 45ms

Brazil Central Bank Open Data

77

The Brazil Central Bank Open Data API provides free access to official financial and economic data from Brazil s central bank (Banco Central do Brasil).

No Auth Beginner HTTPS 673ms

Brazil Receita WS

82

Brazil Receita WS lets you look up official information about Brazilian companies using their CNPJ (tax registration number).

No Auth Beginner HTTPS 214ms