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API · /admetrics-api

Ad Metrics API

healthy 4,862 Subscribers

Marketing and advertising metrics as an API — the everyday campaign maths, computed locally and deterministically and entirely currency-agnostic. The funnel endpoint takes any of impressions, clicks, conversions, spend and revenue and computes every metric the inputs allow: click-through rate (CTR), cost per click (CPC), cost per mille (CPM), conversion rate, cost per acquisition (CPA), average order value, return on ad spend (ROAS), return on investment (ROI) and profit — anything not derivable is returned as null rather than guessed. The roas endpoint focuses on profitability: ROAS, ROI and profit, and — given a gross margin — the break-even ROAS and gross profit, with a profitable flag. The target endpoint reverse-plans a campaign: from a conversion or revenue goal and your known rates it works out the required clicks, impressions and budget and the expected revenue and ROAS. Everything is computed locally and deterministically, so it is instant and private. Rates such as conversion_rate and ctr are given as fractions (0.05 = 5%). Ideal for marketing dashboards and reporting, media-buying and bid tools, agency and campaign planners, and e-commerce analytics. Pure local computation — no key, no third-party service, instant. Live, nothing stored. 3 endpoints. This is advertising-metric maths; for loan and investment maths use a finance-calculator API.

#marketing #advertising #roas #ctr #analytics #developer-tools
api.oanor.com/admetrics-api
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Machine-readable spec so AI agents can integrate this API.

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

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

Ad Metrics API — live data on the oanor API marketplace

API health

healthy
Uptime
100.00%
Server probes · 24h
Avg latency
75 ms
Server probes · 24h
Subscribers
4,862
active
Total calls
76
last 7 days
status Full status page → · 8 probes/24h

Pricing

Pick a tier — billed monthly, cancel anytime.

Free

Free

  • 9,735 calls / month
  • 2 requests / second
  • Hard cap (429 above quota, no overage)
  • 9,735 calls/month
  • 2 req/sec
  • Funnel + ROAS + planning
  • No credit card
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Starter

€11.25 /month

  • 19,350 calls / month
  • 8 requests / second
  • Hard cap (429 above quota, no overage)
  • 19.35k calls/month
  • 8 req/sec
  • CTR / CPC / CPM / CPA
  • Email support
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Pro

€31.15 /month

  • 243,500 calls / month
  • 20 requests / second
  • Hard cap (429 above quota, no overage)
  • 243.5k calls/month
  • 20 req/sec
  • Dashboards / reporting pipelines
  • Priority support
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Mega

€69.15 /month

  • 1,260,000 calls / month
  • 50 requests / second
  • Hard cap (429 above quota, no overage)
  • 1.26M calls/month
  • 50 req/sec
  • Platform scale
  • Dedicated SLA
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Related APIs

Other APIs with overlapping tags.

Marketing Metrics API — oanor API marketplace

Marketing Metrics API

Digital-marketing metrics maths as an API, computed locally and deterministically. The ads endpoint computes campaign KPIs from any two of the spend, impressions, clicks and conversions: the CPM (cost per thousand impressions), the CPC (cost per click), the CTR (click-through rate), the conversion rate and the CPA (cost per acquisition). The roas endpoint computes the return on ad spend, ROAS = revenue ÷ spend, the ROI percentage and the gross profit, and — given a gross margin — the break-even ROAS of 1 ÷ margin. The ltv endpoint computes the customer lifetime value, average order value × purchase frequency × lifespan × gross margin, and, with the marketing spend and number of new customers, the customer acquisition cost, the all-important LTV:CAC ratio and the CAC payback period in months. Everything is computed locally and deterministically, so it is instant and private. Ideal for marketing, advertising, e-commerce and growth app developers, campaign dashboards and reporting tools, and agency calculators. Pure local computation — no key, no third-party service, instant. Live, nothing stored. 3 endpoints. This is marketing-metrics maths; for percentage maths use a percentage API and for currency conversion use a currency API.

api.oanor.com/marketing-api

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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

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ads.txt API

Fetch and evaluate any publisher's ads.txt / app-ads.txt — the IAB authorized-digital-sellers standard. Pass a domain and the check endpoint fetches its ads.txt server-side, then returns every seller record parsed into its fields — advertising system, the publisher's seller/account id, the DIRECT or RESELLER relationship and the optional certification-authority id (TAG-ID) — alongside counts (direct, reseller, distinct ad systems) and the declared variables OWNERDOMAIN, MANAGERDOMAIN, CONTACT and SUBDOMAINS. The verify endpoint answers the one question programmatic-advertising integrations actually ask: is this advertising system, with this publisher id, authorized to sell this domain's inventory? — returning an authorized boolean and the matching records. A missing file is reported as found:false (not an error), and soft-404 HTML pages are detected and rejected so you never parse a "page not found" as records. The request is made server-side and private or internal targets are refused (SSRF-guarded). Built for ad-tech supply-chain verification, SSP/DSP onboarding checks, anti-fraud and inventory audits. An ads.txt seller-authorization checker — distinct from the security-contact file reader (securitytxt), the robots.txt crawlability evaluator (robots) and the sitemap parser (sitemap). No upstream key, no cache.

api.oanor.com/adstxt-api

 Homebrew Install Analytics API — oanor API marketplace

Homebrew Install Analytics API

Live install analytics for Homebrew, the macOS and Linux package manager, from the public formulae.brew.sh feed — no key, nothing stored. The adoption view of the Homebrew ecosystem: how much each command-line formula and each desktop-app cask is installed, and the most-installed packages overall, distinct from the Homebrew formula-catalog API in the catalogue (which describes a package — this measures how much it is actually used). The formula endpoint returns a command-line tool's install counts over 30, 90 and 365 days plus install-on-request, with its version and description. The cask endpoint returns a desktop app's install counts. The top endpoint returns the most-installed formulae or casks over a chosen window, ranked. Build developer-tool popularity dashboards, "is this tool still maintained and used" widgets, package-trend trackers and ecosystem-health tools on top of real Homebrew analytics. Look up a formula by its name (wget, node, ffmpeg) or a cask by its token (google-chrome, visual-studio-code); counts come from Homebrew's opted-in user analytics.

api.oanor.com/brewanalytics-api

Frequently asked questions

Quick answers about pricing, quotas, and integration.

How do I get an API key for Ad Metrics API?
Sign up for free at oanor.com, generate an API key from the developer dashboard, and call Ad Metrics API with the x-oanor-key header. No credit card needed for the free tier.
What's the rate limit for Ad Metrics 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 Ad Metrics API cost?
Ad Metrics API has a free tier with 100 calls / month. Paid plans start at €11.25 / 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 Ad Metrics API GDPR-compliant?
All requests to Ad Metrics 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/admetrics-api/SOME_PATH \
  -H "x-oanor-key: oanor_test_..."
const res = await fetch("https://api.oanor.com/admetrics-api/SOME_PATH", {
  headers: { "x-oanor-key": "oanor_test_..." }
});
const data = await res.json();
$ch = curl_init("https://api.oanor.com/admetrics-api/SOME_PATH");
curl_setopt($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/admetrics-api/SOME_PATH",
    headers={"x-oanor-key": "oanor_test_..."},
)
print(r.json())

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