Hasura API

Development / API Key Intermediate HTTPS CORS
Varies by plan (check documentation)

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

book title and author
ISBN and publisher
cover image URL
page count
publication date

Example Response

JSON 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

400 validation-failed: field not found in type The GraphQL query references a field that does not exist on the type or has been misspelled.
Use the GraphQL introspection query or the Hasura Console API Explorer to check available fields before writing queries.
401 access-denied The x-hasura-admin-secret header is missing or incorrect, or row-level permissions deny access for the current role.
Verify the admin secret matches your Hasura project settings, or configure appropriate permission rules for the user role.
query depth limit exceeded The GraphQL query nests relationships too deeply, exceeding the configured depth limit.
Simplify the query by reducing nesting depth or increase the depth limit in Hasura project settings if you control the instance.

Matrix Score Breakdown

🌐 Reachability 30/30
⚡ Speed 10/20
🔒 Security 15/15
🛠 Developer XP 17/20
✓ Reliability 10/15

Partially tested on Apr 5, 2026

Technical Specifications

Auth API Key
HTTPS REQUIRED
CORS YES
Category Development
Difficulty Intermediate
Verified: 2026-04-07

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