Overview
Hasura is a GraphQL and REST API engine that auto-generates a powerful API layer on top of your PostgreSQL, MySQL, or other supported databases with built-in authorization, subscriptions, and remote joins. The Hasura Cloud API also provides management endpoints for controlling projects, environments, and metadata programmatically. It is widely used in production applications that need instant, scalable APIs without manually writing resolver code.
Beginner Tip
Hasura requires you to have a database connected — the fastest way to get started is using Hasura Cloud with a free Neon or Supabase PostgreSQL database. Once connected, Hasura auto-generates GraphQL queries for all your tables. Use the Hasura Console web UI to explore your schema before writing API calls. API keys are passed via the x-hasura-admin-secret header.
Available Data
Example Response
{
"status": "success",
"data": {
"result": "Data from Hasura",
"description": "GraphQL and REST API Engine with built in Authorization",
"timestamp": "2025-01-15T10:00:00Z"
}
} Field Reference
data Top-level container for successful GraphQL query results. data.[table_name] Array of row objects for the queried table, keyed by the table name. errors Array of error objects present when the query fails; null on success. errors[].message Human-readable description of what went wrong. errors[].extensions.code Machine-readable error code such as validation-failed or access-denied. Implementation Example
const url = "https://hasura.io/opensource/";
// Replace headers or query params with the values required by this API.
const response = await fetch(url, {
headers: {
"X-API-Key": "YOUR_API_KEY"
}
});
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
Matrix Score Breakdown
Partially tested on Apr 5, 2026
Technical Specifications
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