26 live APIs · generous free tiers

Simple, affordable APIs for developers

A small catalog of fast, affordable, no-nonsense APIs — CORS proxy, PDF tools, email validation, IP geolocation, and currency exchange rates. Generous free tiers, clean JSON, available on RapidAPI.

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The APIs

Fast, stateless, and priced to be the easy choice. Every one has a free tier and clean JSON responses.

Business

NAICS Code Finder

Semantic NAICS classification: paste a company description and get ranked codes with 0–100 match ratings — plus keyword search, code lookup, and similar-industry discovery.

Data

Image Intelligence

Analyze any image in one call — blur, exposure, saturation, dominant colors, a quality score, and on-device NSFW moderation with category tags.

Text Analysis

Text & SEO Analyzer

Word, character & sentence counts, readability scores, reading time, and keyword density.

Tools

Unit Converter

Convert length, mass, temperature, volume, area, speed, data, time, pressure, and energy.

Tools

String Toolkit

Case conversion, slugify, escape/unescape, transforms, and string stats.

Tools

Date & Time Toolkit

Parse dates, diff and add durations, business-day math, and age — ISO + epoch, UTC.

Location

Geo Toolkit

Plus Codes, geohash & Maidenhead encode/decode plus distance, bearing, destination, and DD‑DMS.

Finance

Finance Math

Loan & mortgage payments, amortization, compound interest, ROI, VAT, tip, and break‑even.

Tools

Stateless Encryption

AES‑256‑GCM and RSA encrypt/decrypt, key generation, and hashing — your keys, we store nothing.

Data

Data Anonymizer

Mask, hash, and pseudonymize (HMAC) sensitive values, plus k‑anonymity checks for datasets.

Tools

User-Agent Parser

Parse any User-Agent into browser, engine, OS, device, and bot detection — single or batch.

Data

Mock Data Generator

Generate realistic fake users, addresses, companies, products, and custom schemas — seedable.

Data

Sun & Moon Times

Sunrise, sunset, golden hour, solar position, and moon phase for any coordinate and date.

Tools

Password Strength

Score password strength (zxcvbn), check breaches via HIBP, generate strong passwords, enforce policies.

Data

PII Detector & Redactor

Detect and redact emails, phones, SSNs, credit cards, IPs, and keys in text.

Tools

CORS Proxy & Web Toolbox

Fetch any URL with permissive CORS headers, plus link metadata, favicons, and header inspection.

Tools

PDF Toolkit

Merge, split, watermark, rotate, and inspect PDFs from base64 or a URL — no bloat.

Data

Email Validator

Validate emails: syntax, MX/deliverability, disposable & role detection, typo suggestions.

Data

IP Geolocation

Geolocate any IP — country, city, coordinates, timezone — plus IP-to-IP distance.

Finance

Currency Exchange Rates

Convert currencies and fetch live exchange rates — free ECB data, 30+ currencies, daily.

Tools

DNS Lookup

Resolve DNS records (A, AAAA, MX, TXT, NS, CNAME, SOA) and reverse-lookup any IP — fast, no setup.

Tools

Crypto & Encoding Toolkit

Hashing, HMAC, Base64, UUID v4, secure password generation, and JWT decoding — one fast API.

Tools

QR Code Generator

Generate QR codes as PNG, SVG, or data URI — custom size, colors, margin, and error correction.

Data

Phone Number Validator

Validate & parse phone numbers — country, line type, E.164, and national/international formats.

Tools

Image Toolkit

Resize, convert, compress & crop images (JPEG/PNG/WebP/AVIF) from a URL or base64 — fast, no storage.

Tools

Color Toolkit

Convert colors (hex/RGB/HSL/HSV/CMYK), check WCAG contrast, and generate palettes — pure & fast.

Free online tools

Try the APIs instantly — no signup. Each tool is powered by the same API you can drop into your app.

Free tool

NAICS Code Lookup

Describe what a company does in plain English and get the best-matching NAICS codes with match ratings.

Free tool

IP Address Lookup

Find the country, city, coordinates, and timezone of any IP address.

Free tool

Email Validator

Check if an email address is valid, deliverable, disposable, or a typo.

Free tool

Currency Converter

Convert between 30+ currencies using daily European Central Bank rates.

Free tool

URL Metadata / Open Graph Checker

See the title, description, and preview image any site exposes via Open Graph tags.

Free tool

CORS Proxy Tester

Fetch any URL through a CORS proxy and see the response — right in your browser.

Why Abundance APIs

Generous free tier

1,000 requests/month free on every API. Upgrade only when you grow.

No SDK, no lock-in

Plain HTTPS and JSON. Call from any language in a few lines.

Stateless & fast

No accounts, no stored data. Hardened against SSRF and abuse.

One bill on RapidAPI

Discovery, keys, and billing handled by RapidAPI. Subscribe in a click.

Built for agents

Every API is discoverable and testable by AI agents with zero setup:

  • MCP server: https://abundanceapis.com/mcp — a keyless, rate-limited Model Context Protocol endpoint. Add it in Claude, Cursor, or ChatGPT; call list_apis to see the whole catalog, then try the sample tools.
  • Machine-readable specs: OpenAPI 3.0 at https://abundanceapis.com/openapi/<slug>.json (index at https://abundanceapis.com/openapi).
  • LLM site map: /llms.txt and /llms-full.txt.
  • Keyless in-browser tools for instant trials, then one-click subscribe on RapidAPI for production.

Ship faster with APIs that just work

Browse the catalog on RapidAPI and start on the free tier today.

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