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API · /sitemap-api

Sitemap API

healthy 3,297 Subscribers

Fetch and parse an XML sitemap (the sitemaps.org protocol). Pass a sitemap URL and the parse endpoint fetches it — following redirects and transparently gunzipping .gz sitemaps — and returns its type: a urlset with every URL and its lastmod, changefreq and priority, or a sitemapindex listing the child sitemaps, with offset/limit paging for large files. The urls endpoint goes further: when the sitemap is an index it fetches the child sitemaps too and flattens every page URL into a single list, with a configurable cap on URLs and child sitemaps and a truncated flag so you stay in control. The request is made server-side and private or internal targets are refused (SSRF-guarded). Built for SEO audits, building crawl queues and content inventories, change monitoring and migration checks. A sitemap fetcher and parser — distinct from generic XML-to-JSON conversion (xml), the robots.txt evaluator (robots) and the on-page SEO audit (seo). No upstream key, no cache.

#sitemap #seo #crawler #xml #web #developer-tools
api.oanor.com/sitemap-api
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Machine-readable spec so AI agents can integrate this API.

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

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

API health

healthy
Uptime
100.00%
Server probes · 24h
Avg latency
923 ms
Server probes · 24h
Subscribers
3,297
active
Total calls
0
last 7 days
status Full status page → · 6 probes/24h

Pricing

Pick a tier — billed monthly, cancel anytime.

Free

Free

  • 1,980 calls / month
  • 2 requests / second
  • Hard cap (429 above quota, no overage)
  • 1,980 calls/month
  • 2 req/sec
  • Parse + flatten
  • No credit card
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Starter

€5.85 /month

  • 37,000 calls / month
  • 8 requests / second
  • Hard cap (429 above quota, no overage)
  • 37k calls/month
  • 8 req/sec
  • Index recursion + gzip
  • Email support
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Pro

€19.60 /month

  • 200,000 calls / month
  • 20 requests / second
  • Hard cap (429 above quota, no overage)
  • 200k calls/month
  • 20 req/sec
  • Crawl-queue & SEO pipelines
  • Priority support
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Mega

€51.40 /month

  • 780,000 calls / month
  • 50 requests / second
  • Hard cap (429 above quota, no overage)
  • 780k calls/month
  • 50 req/sec
  • Crawl-platform scale
  • Dedicated SLA
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Related APIs

Other APIs with overlapping tags.

robots.txt API

Fetch and evaluate any website's robots.txt. Pass a URL and a user-agent and the check endpoint tells you whether that URL is crawlable — selecting the most-specific user-agent group and applying the RFC 9309 longest-match Allow/Disallow rules (with * and $ wildcards, where Allow wins ties), and returning the matched rule, the group's crawl-delay and the sitemaps the site declares. The parse endpoint returns the whole file structured into per-user-agent groups (their allow and disallow lists and crawl-delay) plus the list of sitemaps. A missing robots.txt (404/403) means everything is allowed, exactly as the spec requires. The request is made server-side and private or internal targets are refused (SSRF-guarded). Built for SEO audits, crawler and scraper compliance, sitemap discovery and pre-flight "am I allowed to fetch this?" checks. A robots.txt evaluator — distinct from the on-page SEO audit (seo), the XML toolkit (xml) and link unfurling/preview (url). No upstream key, no cache.

api.oanor.com/robots-api

Readability API

Score how easy a piece of text is to read using the standard, peer-reviewed readability formulas — Flesch Reading Ease, Flesch-Kincaid Grade, Gunning Fog, SMOG, Coleman-Liau and the Automated Readability Index. Pass text and get all six scores back together with the underlying counts (words, sentences, syllables, complex and polysyllabic words, letters and characters), an averaged grade level, an estimated reading time and a plain-English interpretation of the reading ease. A second endpoint counts syllables for a word or for every word in a phrase. Supply text inline via ?text=, as a query parameter or in a request body; everything is computed locally with no network calls, so it is fast and deterministic. Built for content and copywriting tools, SEO and editorial workflows, education and accessibility (plain-language) checks, and UX-writing review. A readability scorer — distinct from sentiment/NLP analysis (nlp), spelling and grammar checking (grammar), the case and text utilities (text) and string similarity (similarity). No upstream key, no cache.

api.oanor.com/readability-api

SEO API

Run an on-page SEO audit on any URL — title and meta-description analysis, heading structure, content length, image alt coverage, canonical / viewport / Open Graph checks and an internal/external link breakdown — with an overall 0–100 score. Plus a dedicated link analysis endpoint.

api.oanor.com/seo-api

XML API

A fast, fully-local XML toolkit: convert XML to JSON and JSON to XML with configurable attribute handling, validate XML well-formedness with line and column error details, and pretty-print XML while preserving element order. Every endpoint accepts input via the query string or the request body, up to 2 MB. Pure server-side compute, no third-party upstream, so responses are instant and always available. Ideal for system integrations, SOAP and legacy interop, RSS and sitemap processing, config tooling and data pipelines.

api.oanor.com/xml-api

Frequently asked questions

Quick answers about pricing, quotas, and integration.

How do I get an API key for Sitemap API?
Sign up for free at oanor.com, generate an API key from the developer dashboard, and call Sitemap API with the x-oanor-key header. No credit card needed for the free tier.
What's the rate limit for Sitemap 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 Sitemap API cost?
Sitemap API has a free tier with 100 calls / month. Paid plans start at €5.85 / 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 Sitemap API GDPR-compliant?
All requests to Sitemap 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/sitemap-api/SOME_PATH \
  -H "x-oanor-key: oanor_test_..."
const res = await fetch("https://api.oanor.com/sitemap-api/SOME_PATH", {
  headers: { "x-oanor-key": "oanor_test_..." }
});
const data = await res.json();
$ch = curl_init("https://api.oanor.com/sitemap-api/SOME_PATH");
curl_setopt($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/sitemap-api/SOME_PATH",
    headers={"x-oanor-key": "oanor_test_..."},
)
print(r.json())

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