Developer utility API

One API for the utilities you keep rewriting

Hash strings, generate UUIDs, format JSON, create QR codes, render OG images. 13 endpoints, one key, zero dependencies.

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base64: aGVsbG8gd29ybGQ=
slug: hello-world
sha-256: —

62 endpoints

<50ms avg response

99.9% uptime

0 dependencies

Try it now

API playground

Pick an endpoint, edit the JSON, hit Run. Live responses, no signup required.

How it works

From zero to API call in under a minute

Get your key

Free, no credit card. 1,000 requests/day.

Call any endpoint

REST + JSON. Works from anywhere.

Ship your feature

Skip the boilerplate. Focus on your product.

Endpoints

Everything you need, one API call away

Text & data

/v1/base64/encode
Base64 encode and decode strings or files
/v1/json/format
Format, minify, and validate JSON
/v1/text/stats
Word count, reading time, sentence analysis
/v1/text/language
Detect language using trigram analysis
/v1/csv/to-json
Parse CSV to JSON with header support
/v1/html-sanitize
Strip dangerous HTML tags and attributes

Developer utilities

/v1/hash
Generate MD5, SHA-1, SHA-256, and SHA-512 hashes
/v1/jwt/generate
Sign JWTs with HS256 via Web Crypto
/v1/totp/generate
Generate and validate TOTP codes (RFC 6238)
/v1/math/evaluate
Safe math expression evaluator (no eval)
/v1/units/convert
Convert length, weight, temp, data, time units

Image generation

/v1/og-image
Generate Open Graph images with custom branding
/v1/qr-code
Create QR codes in PNG or SVG
/v1/placeholder
Generate SVG placeholder images with text
/v1/avatar
Deterministic geometric avatars from seed strings
/v1/barcode
Generate Code 128 barcodes as SVG

Quick start

Three lines to your first API call

curl -X POST \
  https://api.botoi.com/v1/hash \
  -H "Content-Type: application/json" \
  -d '{"text": "hello", "algorithm": "sha256"}'

const res = await fetch(
  "https://api.botoi.com/v1/hash",
  {
    method: "POST",
    headers: {
      "Content-Type": "application/json",
    },
    body: JSON.stringify({
      text: "hello",
      algorithm: "sha256",
    }),
  }
);
const data = await res.json();

import requests

res = requests.post(
    "https://api.botoi.com/v1/hash",
    json={
        "text": "hello",
        "algorithm": "sha256",
    },
)
data = res.json()

Pricing

Start free, scale when you need to

Free

$0 /mo

* 1,000 requests/day

* 10 req/min

* All endpoints

* JSON responses

* Community support

Get free API key

Starter

$9 /mo

* 10,000 requests/day

* 30 req/min

* All endpoints

* JSON responses

* Priority support

* Usage dashboard

Get started

Pro

$49 /mo

* 100,000 requests/day

* 300 req/min

* All endpoints

* JSON responses

* Priority support

* Usage dashboard

* Webhook notifications

Go Pro

Business

$199 /mo

* 1,000,000 requests/day

* 1,000 req/min

* All endpoints

* JSON responses

* Dedicated support

* Usage dashboard

* Webhook notifications

* Custom rate limits

Contact sales

Free browser tools

Try before you API

Every API endpoint has a matching browser tool. Test the functionality, then automate it with the API.

Formateur et validateur JSON

Formatez, embellissez, minifiez et validez des donnees JSON en ligne. Detection d'erreurs instantanee avec numeros de ligne.

Encodeur / Decodeur Base64

Encodez et decodez des chaines Base64 en ligne. Prend en charge l'encodage de texte et le Base64 compatible URL.

Convertisseur de couleurs

Convertissez des couleurs entre les formats HEX, RGB et HSL. Apercu en direct avec copie instantanee dans le presse-papiers.

Calculatrice d'interets composes

Calculez les interets composes avec des contributions mensuelles. Visualisez la croissance annee par annee.

Testeur Regex

Testez des expressions regulieres avec mise en surbrillance en direct, details des correspondances et extraction des groupes de capture.

Image Converter

Convert images between HEIC, WebP, AVIF, PNG, BMP, GIF, and SVG formats. Preserves EXIF metadata and handles orientation correctly.

View all 22 tools →

FAQ

Common questions

Do I need an API key? +

No. You can try any endpoint without a key at 5 requests/min. Sign up for a free key to get higher limits.

How is rate limiting handled? +

Each tier has a per-minute and per-day cap. When you hit the limit, the API returns a 429 status with a Retry-After header.

What response format does the API use? +

All endpoints return JSON. Error responses follow a consistent { "error": { "code": "...", "message": "..." } } shape.

Can I upgrade or downgrade my plan? +

Yes. Changes take effect at the start of your next billing cycle. You keep your existing API key.

Is there an OpenAPI spec? +

Yes. The full OpenAPI 3.1 spec is available at api.botoi.com/docs and can be imported into Postman, Insomnia, or any compatible client.

Start building in under a minute

Free API key, no credit card, 1,000 requests/day.

Get free API key View docs