Parse front matter from Markdown
API · /frontmatter-api
Front Matter API
healthy
4,783 Subscribers
Read and write the front-matter metadata block at the top of Markdown and content files — the --- ... --- header used by Jekyll, Hugo, Astro, Eleventy, Gatsby, Next.js MDX and Obsidian. The parse endpoint splits a document into its structured front-matter data (title, tags, date, draft flags and anything else, as proper JSON), the body content and an optional excerpt, and tells you whether front matter was present. The stringify endpoint does the reverse: give it a JSON object of fields and a body, and it returns a clean Markdown file with a YAML front-matter block. Front matter is read as YAML (which also accepts JSON). Perfect for static-site build steps, headless-CMS imports, content migrations and validating posts. Pure local computation — no key, no third-party service, instant; send large documents via POST. Live, nothing stored. 3 endpoints. Distinct from Markdown rendering / table-of-contents extraction and from YAML/TOML format conversion.
api.oanor.com/frontmatter-api
API health
healthy- Uptime
- 100.00%
- Server probes · 24h
- Avg latency
- 90 ms
- Server probes · 24h
- Subscribers
- 4,783
- active
- Total calls
- 45
- last 7 days
Pricing
Pick a tier — billed monthly, cancel anytime.
Free
Free
- 900 calls / month
- 2 requests / second
- Hard cap (429 above quota, no overage)
- 900 calls/month
- 2 req/sec
- Parse + stringify
- No credit card
Starter
€1.80 /month
- 7,500 calls / month
- 8 requests / second
- Hard cap (429 above quota, no overage)
- 7.5k calls/month
- 8 req/sec
- Excerpt + nested YAML
- Email support
Pro
€20.40 /month
- 132,000 calls / month
- 20 requests / second
- Hard cap (429 above quota, no overage)
- 132k calls/month
- 20 req/sec
- Static-site / CMS pipelines
- Priority support
Mega
€56.40 /month
- 680,000 calls / month
- 50 requests / second
- Hard cap (429 above quota, no overage)
- 680k calls/month
- 50 req/sec
- Platform scale
- Dedicated SLA
Built by
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api.oanor.com/table-api
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api.oanor.com/htmltomarkdown-api
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api.oanor.com/yaml-api
Frequently asked questions
Quick answers about pricing, quotas, and integration.
How do I get an API key for Front Matter API?
Sign up for free at oanor.com, generate an API key from the developer dashboard, and call Front Matter API with the x-oanor-key header. No credit card needed for the free tier.
What's the rate limit for Front Matter 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 Front Matter API cost?
Front Matter API has a free tier with 100 calls / month. Paid plans start at €1.80 / 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 Front Matter API GDPR-compliant?
All requests to Front Matter 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/frontmatter-api/SOME_PATH \
-H "x-oanor-key: oanor_test_..."const res = await fetch("https://api.oanor.com/frontmatter-api/SOME_PATH", {
headers: { "x-oanor-key": "oanor_test_..." }
});
const data = await res.json();$ch = curl_init("https://api.oanor.com/frontmatter-api/SOME_PATH");
curl_setopt($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/frontmatter-api/SOME_PATH",
headers={"x-oanor-key": "oanor_test_..."},
)
print(r.json())Ratings
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