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API · /prettier-api

Prettier API

healthy 3,273 Subscribers

Format and beautify source code with Prettier, the de-facto code formatter. Pass code and a language and get it consistently re-formatted: JavaScript, JSX, TypeScript, TSX, CSS, SCSS, LESS, GraphQL and Vue. Tune the output with print width, tab width / tabs, semicolons, single vs double quotes and trailing-comma style. Syntax errors come back with a clear message. The inverse of a minifier. Pure local processing — no key, no third-party service, instant. Live. 3 endpoints. Built for code editors and playgrounds, paste-and-format tools, snippet beautification, docs and CI formatting checks. Complements the SQL formatter and the JSON/YAML/Markdown tools (which cover their own languages).

#prettier #formatter #beautify #javascript #developer-tools #css
api.oanor.com/prettier-api
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Machine-readable spec so AI agents can integrate this API.

/api/prettier-api/openapi.json
/api/prettier-api/llms.txt

Discovery: GET /api/index.json lists every API.

Prettier API — live data on the oanor API marketplace

API health

healthy
Uptime
100.00%
Server probes · 24h
Avg latency
86 ms
Server probes · 24h
Subscribers
3,273
active
Total calls
57
last 7 days
status Full status page → · 6 probes/24h

Pricing

Pick a tier — billed monthly, cancel anytime.

Free

Free

  • 1,380 calls / month
  • 2 requests / second
  • Hard cap (429 above quota, no overage)
  • 1,380 calls/month
  • 2 req/sec
  • 9 languages
  • No credit card
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Starter

€5.60 /month

  • 22,000 calls / month
  • 8 requests / second
  • Hard cap (429 above quota, no overage)
  • 22k calls/month
  • 8 req/sec
  • Width / quote / semi options
  • Email support
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Pro

€25.20 /month

  • 170,000 calls / month
  • 20 requests / second
  • Hard cap (429 above quota, no overage)
  • 170k calls/month
  • 20 req/sec
  • Editor / CI pipelines
  • Priority support
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Mega

€61.20 /month

  • 870,000 calls / month
  • 50 requests / second
  • Hard cap (429 above quota, no overage)
  • 870k calls/month
  • 50 req/sec
  • Platform scale
  • Dedicated SLA
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Built by

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SQL Formatter API

Format, beautify and minify SQL across 15+ dialects. Pass a query and get it pretty-printed with consistent indentation and keyword casing — for PostgreSQL, MySQL, MariaDB, SQLite, SQL Server (T-SQL), Oracle (PL/SQL), BigQuery, Snowflake, Redshift, Spark, Trino, DuckDB, ClickHouse, DB2, Hive and standard SQL. Control the indent width and whether keywords are upper-cased, lower-cased or left as-is. A minify endpoint collapses a query to a single line (stripping comments while preserving string literals), and a dialects endpoint lists everything supported. Pure local processing — no key, no third-party service, instant. Live. 4 endpoints. Built for SQL editors and IDEs, query loggers, migration tooling, documentation and code review.

api.oanor.com/sqlformat-api

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Shrink your web assets. Minify CSS, JavaScript and HTML through one simple API and get back the compact output plus how many bytes (and what percent) you saved. CSS is minified with clean-css, JavaScript with Terser (with optional name-mangling and compression toggles), and HTML with html-minifier-terser (collapsing whitespace, dropping comments and redundant attributes, and minifying inline CSS and JS). Pass the source as a parameter or in the request body (up to 5 MB). Pure local processing — no key, no third-party service, instant. Live. 4 endpoints. Built for build pipelines, on-the-fly asset optimisation, email-HTML slimming, CMS and CDN tooling, and page-speed work.

api.oanor.com/minify-api

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Everything about npm packages in one clean API. Look up a package’s latest metadata — version, description, license, homepage, repository, author, keywords, dist-tags, dependencies and maintainers — list its full version history with release dates, pull download statistics for the last day, week, month or year, and search the registry across more than three million packages. Sourced live from the public npm registry and returned as tidy JSON through a fast, reliable API. Ideal for developer dashboards and tooling, package and dependency analytics, supply-chain and security checks, CI/CD and documentation sites.

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Programming Languages API

The language definitions GitHub uses to recognise code (the open-source Linguist data) as an API — a clean reference for syntax highlighting, file-type detection, repository dashboards and developer tooling. For each of 800+ languages the API returns its type (programming, markup, data or prose), its brand colour (the hex GitHub paints it), the file extensions associated with it, common aliases, the GitHub language id and the editor (ace) mode. Look a language up by name or alias (golang resolves to Go), reverse-look-up which language(s) own a file extension (.py → Python; .h → C, C++, Objective-C), list the languages of a type, search, or list them all. Distinct from languages-api (ISO 639 human languages) — this is the programming-language reference. Served from memory — always fast.

api.oanor.com/proglang-api

Frequently asked questions

Quick answers about pricing, quotas, and integration.

How do I get an API key for Prettier API?
Sign up for free at oanor.com, generate an API key from the developer dashboard, and call Prettier API with the x-oanor-key header. No credit card needed for the free tier.
What's the rate limit for Prettier API?
Free tier allows 1 request per second. Paid plans scale up to 50 requests per second on the Mega tier. Hard limits return HTTP 429 above the quota — no surprise overage charges.
How much does Prettier API cost?
Prettier API has a free tier with 100 calls / month. Paid plans start at €5.60 / month with higher quotas and faster rate limits.
Can I cancel my subscription anytime?
Yes. Plans are billed monthly and you can cancel anytime from your billing dashboard. No long-term contracts and no cancellation fee.
Is Prettier API GDPR-compliant?
All requests to Prettier API go through our EU-based gateway. Your upstream API key never leaves our server and no personal data is shared with the upstream provider beyond the request you send.

Pick an endpoint from the list on the left to see its details and try it.

Code snippets

Sign up to get an API key, then call any path under your slug.

curl https://api.oanor.com/prettier-api/SOME_PATH \
  -H "x-oanor-key: oanor_test_..."
const res = await fetch("https://api.oanor.com/prettier-api/SOME_PATH", {
  headers: { "x-oanor-key": "oanor_test_..." }
});
const data = await res.json();
$ch = curl_init("https://api.oanor.com/prettier-api/SOME_PATH");
curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
curl_setopt($ch, CURLOPT_HTTPHEADER, ["x-oanor-key: oanor_test_..."]);
$response = curl_exec($ch);
import requests
r = requests.get(
    "https://api.oanor.com/prettier-api/SOME_PATH",
    headers={"x-oanor-key": "oanor_test_..."},
)
print(r.json())

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