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Getting Started

Getting Started

Welcome to API Codex! We're excited to have you here. This guide will help you understand what we offer and how to get the most out of our APIs.

What is API Codex?

API Codex is a suite of production-ready APIs designed to help developers solve common challenges in their applications. Whether you're building an email marketing platform, a recruitment system, a financial application, or anything in between, we have APIs that can help.

Everything runs on one platform, which means you get:

• One API key for all 40 APIs
• One plan and one bill, managed from your dashboard
• A free tier with 1,000 credits every month, no credit card
• Interactive docs to try any endpoint before you code
• Copy-paste examples in cURL, JavaScript, Python, and PHP

Our API Categories

Email APIs

Perfect for applications that need to validate, verify, or process emails:

• Email Intelligence - Validate email addresses, detect disposable emails, check domain reputation
• Email Deliverability - Test SMTP configuration, verify SPF/DKIM/DMARC, monitor blacklists
• Email Parser - Extract structured data from email content

Document Parsing APIs

Automate data extraction from documents with AI-powered parsing:

• Resume Parser - Extract skills, experience, education from resumes
• Invoice Parser - Pull line items, totals, vendor info from invoices
• Receipt Parser - Digitize receipts for expense tracking
• Skill Parser - Identify and categorize skills from any text

Text Intelligence APIs

Analyze and process text with advanced NLP:

• Text Analysis - Sentiment analysis, entity recognition, language detection
• Text Anonymization - Detect and redact PII for privacy compliance

Infrastructure APIs

Essential tools for web and network applications:

• DNS Lookup - Query DNS records, reverse lookups, domain info
• SERP API - Access search engine results programmatically

How It Works

Getting started with API Codex is straightforward:

1. Browse Our APIs

Explore our API Catalog to find the APIs that fit your needs. Each API page includes detailed documentation, example requests and responses, and pricing information.

2. Create Your Account

Sign up at dash.apicodex.io with just your email. You get a magic link, no password and no credit card required.

3. Get Your API Key

Create a key from the API Keys page. The key (acx_live_...) works across all 40 APIs and starts on the Free plan with 1,000 credits every month.

4. Make Your First Request

Call any API at https://api.apicodex.io/<segment> and pass your key as an apikey query parameter or an X-Api-Key header:

Code
curl "https://api.apicodex.io/dns-lookup/v1/check?name=example.com&apikey=YOUR_API_KEY"

5. Scale When You Need To

Upgrade to Starter ($29.99/mo, 50,000 credits, 10 rps) or Pro ($99.99/mo, 250,000 credits, 25 rps) from dash.apicodex.io/billing. Your key stays the same, so there are no code changes.

Choosing the Right API

Not sure which API you need? Here's a quick guide:

If you need to...	Use this API
Validate email addresses	Email Intelligence
Check email sending reputation	Email Deliverability
Parse email content	Email Parser
Extract data from resumes	Resume Parser
Process invoices automatically	Invoice Parser
Digitize receipts	Receipt Parser
Extract skills from text	Skill Parser
Analyze sentiment/entities	Text Analysis
Anonymize sensitive data	Text Anonymization
Query DNS records	DNS Lookup
Get search engine results	SERP API

What Makes API Codex Different?

Developer-Friendly

We design our APIs with developers in mind. Clear documentation, consistent response formats, helpful error messages, and comprehensive examples in multiple languages.

Production-Ready

Our APIs are built for reliability. We maintain high uptime, fast response times, and scale to handle whatever you throw at them.

Fair Pricing

Every account starts on the free plan with 1,000 credits a month. No credit card required to get started. Pay only when you need more capacity.

Unified Experience

All our APIs follow consistent patterns for authentication, error handling, and response formats. Learn one, and you'll feel at home with all of them.

Ready to Dive In?

Here are your next steps:

Need Help?

We're here to help you succeed:

• Documentation - Each API has comprehensive docs in our API Catalog
• Interactive Testing - Try any endpoint straight from the API Catalog with your own key
• FAQ - Check our frequently asked questions for quick answers
• Support - Contact us for technical assistance

Welcome aboard! We can't wait to see what you build with API Codex.