M
API Matrix

How to Choose the Best Finance API in 2026

There are 45 Finance APIs in our directory. Of these, 9 require no authentication, making them ideal for quick prototyping. 8 are rated beginner-friendly.

Last updated: April 2026

Quick Comparison: Top 10 Finance APIs

Name Auth HTTPS CORS Difficulty
Marketstack API Key ✓ ? Intermediate
Aletheia API Key ✓ ✓ Intermediate
Alpaca API Key ✓ ✓ Intermediate
Alpha Vantage API Key ✓ ✓ Intermediate
Banco do Brasil OAuth ✓ ✓ Advanced
Bank Data API API Key ✓ ? Intermediate
Billplz API Key ✓ ? Intermediate
Binlist No Auth ✓ ? Beginner
Boleto.Cloud API Key ✓ ? Intermediate
Citi API Key ✓ ? Intermediate
See all 45 Finance APIs compared side by side →

Free Finance APIs (No Auth)

These APIs require no API key or signup. Start using them immediately.

Binlist

⭐ Beginner's Pick
92

Binlist gives you free access to a database of Bank Identification Numbers (BINs), the first 6-8 digits of any credit or debit card number that identify the issuing bank and card type.

No Auth Beginner HTTPS 59ms

Econdb

⭐ Beginner's Pick
100

Econdb provides free access to global macroeconomic data including GDP, inflation, unemployment, and hundreds of other economic indicators from official sources like central banks and statistical agencies.

No Auth Beginner HTTPS 175ms

Fed Treasury

⭐ Beginner's Pick
72

The U.S.

No Auth Beginner HTTPS 1189ms

Indian Mutual Fund

⭐ Beginner's Pick
39

The Indian Mutual Fund API gives you free access to the complete history of all mutual funds registered in India.

No Auth Beginner HTTPS 8663ms

Portfolio Optimizer

⭐ Beginner's Pick
92

Portfolio Optimizer is a free REST API that helps you analyze and optimize investment portfolios using advanced mathematical models.

No Auth Beginner HTTPS 38ms

Razorpay IFSC

⭐ Beginner's Pick
92

Razorpay IFSC API lets you look up Indian bank branch details using an 11-character IFSC code — completely free and without authentication.

No Auth Beginner HTTPS 87ms
View all free Finance APIs →

Try It in 5 Minutes: Binlist

Quick implementation example using Binlist.

Using curl

curl https://binlist.net/

JavaScript

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

New to APIs? Read our Getting Started Guide →

Frequently Asked Questions

How many Finance APIs are available?

There are 45 Finance APIs in our directory as of 2026.

Are there free Finance APIs?

Yes, 9 Finance APIs require no authentication and are completely free to use.

What is the easiest Finance API to use?

Binlist is one of the easiest to get started with. It is rated as beginner-level and requires no authentication.

Do I need an API key for Finance APIs?

It depends. 9 APIs need no authentication, 31 require an API key, and 5 use OAuth.

Explore Finance APIs

Browse All APIs → Side by Side →