API CodexAPI Codex

40 REST APIs · JSON over HTTPS

One catalog of production APIs.

Email validation, document parsing, DNS, IP intelligence, finance, and open data. Every API has clear docs, a sample response, and a free tier to start with.

Get your free API keyBrowse the catalog

Free tier included. No credit card required.

production APIs
40
production APIs
free credits / month
1,000
free credits / month
key for everything
1
key for everything
from the edge
<100ms
from the edge
GET /email-intelligence/v1/check200 OK · 41ms
$ curl api.apicodex.io/email-intelligence/v1/check \
    ?email=jane@startup.io

{
  "email": "jane@startup.io",
  "valid": true,
  "disposable": false,
  "mx_found": true,
  "risk_score": 0.04
}

Index

What's in the catalog

Email02Parsers04HR & Recruiting02Infrastructure06Text & NLP02Search01Privacy01Finance03Data04Social Media05Vehicle Data05Developer Tools05

Start here

Popular APIs

Email Intelligence API

Validate addresses, detect disposable email, and inspect domain signals.

emailFree 1K
Invoice Parser API

Extract structured invoice data from documents and images.

parsersFree 1K
DNS Lookup API

Query all DNS record types and reverse lookups over REST.

infrastructureFree 1K
IP Intelligence API

Reverse DNS, ASN ownership, and network information for any IP.

infrastructureFree 1K
Currency API

Real-time and historical exchange rates with conversion.

financeFree 1K
SERP API

Structured search-result data across major search engines.

searchFree tier
View all 40 APIs

How it works

From catalog to first call

01

Pick an API

Browse the catalog and read the endpoint docs and current plan.

02

Create a free key

Sign up in seconds at the dashboard. One key works across all 40 APIs, with 1,000 free credits every month.

03

Make the request

Start from the copy-paste examples, then call with your own data.

Free tier

What 1,000 free credits get you, every month

1,000
data lookups
countries, vehicles, holidays, aviation
200
email or DNS checks
validation, deliverability, lookups
40
AI document parses
invoices, receipts, resumes
40
search queries
structured SERP results

Credits renew monthly and work across every API. Mix and match however you like. Claim yours.

Coming soon · MCP

One MCP server. All 40 APIs become your agent's tools.

The API Codex MCP server plugs the entire catalog into Claude, Cursor, or any MCP-compatible agent. One key, one config entry, forty APIs at once: the best value on the platform, and your existing key will work on day one.

See how MCP will work 
"mcpServers": {
  "apicodex": {
    "url": "https://mcp.apicodex.io",
    "headers": { "X-Api-Key": "acx_live_..." }
  }
}

Pricing

Simple pricing, no surprises

Start free, upgrade when you outgrow it. One subscription covers all 40 APIs; credits are shared across everything you call.

Free

Free
1,000 credits · ~1,000 requests/mo · 2 rps
  • All 40 APIs included
  • No credit card required
  • Full documentation and examples
Start for free

Starter

Popular
$29.99/month
50,000 credits · ~50,000 requests/mo · 10 rps
  • All 40 APIs included
  • Email support
  • Usage dashboard and analytics
Start with Starter

Pro

$99.99/month
250,000 credits · ~250,000 requests/mo · 25 rps
  • All 40 APIs included
  • Priority support
  • Up to 5 API keys
Start with Pro

Need a different plan?

Tell us about your API, volume, or support requirements.

Contact us

Ready when you are.

Create a free API key and make your first call in minutes. 1,000 credits a month, every API included, no credit card.

Get your free API keyRead the docs