Everything you need to build with the RankParse SEO data API and its MCP server.

RankParse is an SEO data API for developers and AI agents. It combines a link graph built from pre-processed public web data (backlinks, referring domains, anchor text, domain authority, top pages) with live page checks (on-page SEO, tech stack, site health, structured data, Core Web Vitals) and your own search data (rankings from Google, Bing and Yandex, Search Console, indexing). You call it over plain REST or through an MCP server, and you pay per call with prepaid credits. There is no subscription.

Quickstart

Get an API key and make your first call in five minutes.

Authentication

Send your X-API-Key, rotate keys and keep them safe.

API reference

Every endpoint with parameters, examples and response fields.

MCP server for AI agents

Connect Claude, ChatGPT, Claude Code or Cursor to RankParse tools.

Rank tracking

Read stored Google, Bing and Yandex keyword rankings.

Credits and pricing

Costs per endpoint, refunds, spend cap and auto recharge.

Changelog

What shipped and when.

Hello world

Base URL: https://api.rankparse.com. All endpoints live under /v1/.

curl "https://api.rankparse.com/v1/domain-authority?domain=github.com" \
  -H "X-API-Key: rp_your_key"

{
  "data": {
    "score": 94,
    "referring_domains": 1203455,
    "total_host_count": 2300112,
    "registered_at": "2007-10-09T18:20:50Z",
    "registrar": "MarkMonitor Inc.",
    "popularity_rank": 31,
    "health_score": 96,
    "risk_flags": []
  },
  "domain": "github.com",
  "credits_used": 1,
  "credits_remaining": 99
}

The values above are illustrative. Every response includes credits_used and credits_remaining; see Response format. No key yet? The Quickstart takes about two minutes, and new accounts include 100 free credits.

What you can build

SEO dashboards and audits. Combine site-explorer, link-audit and page-seo to score a site's links and on-page health in a few calls.
Link building tools. Find prospects with link-intersect, domain-overlap and competitor-gap: the sites that link to your competitors but not to you.
Lead and market research. Use platform-domains and tech-stack to list sites running a platform, enriched with authority and domain age.
AI SEO agents. Give an agent the same endpoints as MCP tools. Actions that change things, such as IndexNow submissions and outreach sends, wait in an approval inbox for a human to approve.
Rank monitoring and client reports. Read stored keyword rankings, history and rank change alerts, and weekly client reports for the websites you track.
Indexing automation. Submit new URLs to Bing, Yandex and other engines with IndexNow.

Endpoint groups

Costs are in credits. "Free" means 0 credits. The full per-endpoint table, with refund rules, is on Credits.

Group	Endpoints	Credits
Authority	`domain-authority`, `domain-rank`	1, 2
Link graph	`backlinks`, `referring-domains`, `outbound-links`, `anchor-text`, `top-pages`	2 each (3 for `backlinks` and `referring-domains` with `score=true`)
Competitive analysis	`domain-overlap`, `link-intersect`, `similar-domains`, `competitor-gap`	5 each
Audits	`link-audit`, `site-explorer`	8, 10
Live page checks	`page-seo`, `page-performance`, `schema-markup`, `tech-stack`, `site-health`, `sitemap`, `crawl-history`	3, 3, 2, 2, 2, 2, 2
Platform data	`platform-domains`, `platform-trends`	1 per domain returned, 1
Bulk	`batch`	2 per successful domain
Indexing	`indexnow`, `indexnow/key`	1, free
Rank tracking	`/v1/rank-tracking/*`	Free
Search Console	`/v1/gsc/*`	Free
Google Ads keyword research	`/v1/google-ads/*`	Free, with a daily cap
Agent workflow	`/v1/proposals`, `/v1/websites`, `/v1/agent-tasks`, `/v1/activity`, `/v1/client-report`	Free
Outreach	`/v1/outreach/*`	Free
Free tools	`/v1/tools/*`	Free, daily allowance
Account	`/v1/credits`, `/v1/me`, `/v1/keys`, `/v1/usage`, `/v1/pricing`	Free
Not yet available	`link-velocity`, `new-links`, `lost-links`, `internal-links`	Free

How data is sourced

Source	Used by	Freshness
Link graph snapshot	Link graph, authority, anchor text, top pages, competitive endpoints	A point in time. The current snapshot is `cc-main-2026-jan-feb-mar`.
Live fetch	`page-seo`, `tech-stack`, `site-health`, `sitemap`, `schema-markup`	Real time, on every call.
Google PageSpeed Insights	`page-performance`	Cached for 24 hours per URL and strategy.
Your connected accounts	Rank tracking, Search Console, Google Ads	As recently as your last sync.

Conventions

Authentication. Send X-API-Key: rp_... on every request. See Authentication.
Domains. Pass bare hostnames such as stripe.com, not URLs.
Pagination. limit defaults to 100 and is clamped to 1000.
Empty data. A domain with no data returns 200 with data: [], never 404.
Rate limit. 60 requests per minute per key. See Rate limiting.
Errors. JSON with a stable code. See Errors.

SDKs

Official clients exist for Node.js and Python. Both wrap the same REST API documented here.

RankParse docs