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OpenSEO
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Open sourceMIT licenceEarly, in active development

SEO for you and your AI agent. No subscription.

Keyword research, rank tracking, backlinks, site audits, AI visibility and your own Search Console data, in one open-source workspace your agent can drive. Every action shows its price before it runs, and you pay YepAPI directly. OpenSEO adds nothing.

Get startedConnect your agent

New YepAPI accounts get $5 in free credits. Rank checks start at $0.01. Or try the free tools, no sign-up.

Illustration with example data. Prices are YepAPI's at the time of writing.
OpenSEO fee
$0.00
Markup on YepAPI prices
0%
Free credits on a new YepAPI account
$5
Open-source licence
MIT

01Features

Focused workflows, not a bloated suite

The SEO work most sites actually do, without the hundred reports you never open. Each tool has its own page with what it does and what it costs.

All features

  • Keyword research

    Keyword ideas and related keywords with volume, CPC, difficulty, intent and a 12-month trend, across 215 markets.

  • Rank tracking

    Track Google positions on desktop and mobile by country, city or exact coordinates, on a daily, weekly or monthly schedule.

  • Search performance

    Connect Google Search Console and Analytics read-only to find queries one push from page one and pages worth improving first. Free.

  • Domain overview

    Estimated organic traffic, top keywords, top pages and ranking distribution for a domain.

  • Backlinks

    Backlink summary, backlink list, referring domains, anchors, monthly new and lost links, top linked pages and link intersect.

  • Competitor research

    Find your SERP competitors and the keyword gap between their site and yours.

  • Site audit

    A free crawler with 59 technical checks and a health score, and Lighthouse on mobile or desktop with the failed audits listed.

  • AI visibility

    Track prompts across 120+ AI models with web search on. See whether your brand is mentioned, whether your site is cited, and where.

  • Local SEO

    Google Business profile lookups, reviews and geo-grid rank maps.

  • MCP server and REST API

    An MCP server with 60 tools and a REST API. Claude, Cursor, Codex and other agents can use every OpenSEO feature, and every paid call takes a spending ceiling.

Why OpenSEO

Built so you never pay for what you do not use

Big SEO suites charge a monthly fee whether you open them or not. OpenSEO charges nothing, and every cent you spend goes to the data you asked for.

  • The price, before it runs

    Every lookup shows what it costs before you run it, and repeating one within the cache window is free. There is nothing to work out at the end of the month.

  • Agents with a spending cap

    Sixty MCP tools give your agent the whole workspace. Every paid call takes a ceiling, so a call that could cost more than you agreed is refused before a cent is spent.

  • Your own Google data

    Connect Search Console and Analytics read-only to find queries one push from page one and the pages most worth improving. Free, and nothing Google returns is stored.

  • Open source, no markup

    MIT licensed and self-hostable. OpenSEO adds nothing to YepAPI’s prices, whether you use this site or run it yourself.

02How it works

Three steps, and none of them is a checkout

OpenSEO never takes a payment. The data comes from YepAPI, so that is where the money goes.

  1. Create a YepAPI account

    Sign up at yepapi.com. New accounts get $5 in free API credits, enough for about 500 page-one rank checks.

  2. Paste your key

    Add your YepAPI key to OpenSEO. From then on, YepAPI bills each call to that key at its own pay-per-call price.

  3. Run research

    Pick an action. The app shows what it will cost before it runs, so there is nothing to work out afterwards.

03Pricing by action

You see the price before anything runs

There are no plans, seats or monthly limits. Every action has a price set by YepAPI, and the app shows it before you run it.

What $5 in credits covers

  • about 500page-one rank checks, or
  • about 60keyword research runs, or
  • about 80backlink lookups

Full pricing and FAQ

Example prices for common actions, at YepAPI's rates
ActionYepAPI price
Rank checkOne keyword, found on page onefrom $0.01
Keyword research150 resultsabout $0.08
Domain overviewOne domain: totals, distribution, authority$0.14
Backlinks100 rows$0.06
LighthouseOne run, mobile or desktop$0.05
Maps searchOne search$0.07
Geo-grid5×5 grid, 25 Maps searches$1.75
OpenSEO feeOn every action$0.00

YepAPI's prices at the time of writing. YepAPI sets them and may change them. A rank check stops at the page where your site appears, so a page-one keyword costs $0.01.

04Agents and MCP

Connect your agent in two minutes

Every feature in the app is available to Claude, Cursor, Codex and other agents over MCP, with the same prices and limits you see in the app. Then just ask.

  • Find 20 keywords for emergency plumbing in Austin under difficulty 30, and save them.
  • Which of my pages are stuck on page two, and what would move them?
  • Check my rankings this week and tell me what dropped, for under $0.50.
  • Sixty tools: research, rank tracking, audits, AI visibility, Search Console
  • Every paid tool takes dry_run and a max_cost_usd ceiling
  • One HTTP endpoint and an oseo_ API key from the app settings
  • Works with Claude, Cursor, Codex and other MCP clients

Read the MCP guide

MCP client config (JSON)
{
  "mcpServers": {
    "openseo": {
      "type": "http",
      "url": "{API_URL}/mcp",
      "headers": {
        "Authorization": "Bearer oseo_your_key"
      }
    }
  }
}
Claude Code
claude mcp add --transport http openseo {API_URL}/mcp \
  --header "Authorization: Bearer oseo_your_key"

05Self-host

Run it on your own machine

OpenSEO is MIT licensed. Clone it, point it at Postgres and run the whole stack yourself. Your YepAPI key works the same way, and the prices do not change.

Default ports

  • API and MCP server:4100
  • App:3200
  • This site:3101

Self-hosting guide

Terminal
git clone <repository-url> openseo
cd openseo
cp .env.example .env
# In .env: point DATABASE_URL at your Postgres database,
# set AUTH_SECRET to 32+ random characters, and set
# ENCRYPTION_KEY to the output of: openssl rand -base64 32
pnpm install
pnpm db:migrate
pnpm dev

The public repository link is not published yet. It will appear here when it is.

Paste a key. Run your first research.

New YepAPI accounts get $5 in free API credits. OpenSEO itself costs nothing.

Get startedCreate a YepAPI account