ZeroRank API: documented auth

What is the ZeroRank API?

The ZeroRank API is a public REST interface to keyword data, backlink profiles, SERP positions, and site-audit results. Auth method is documented on the official API reference. No official SDK was detected, so most teams hit it directly with HTTP clients.

Typical builds: scheduled rank trackers that alert on position drops, competitor monitoring dashboards, and automated site-audit reports piped into Slack or a BI tool.

For agent workflows specifically, the null MCP server is usually less code than the REST API. The API still wins for scheduled jobs, dashboards, and anything outside an LLM-driven flow.

For the broader picture: ZeroRank review, .

How much does the ZeroRank API actually cost?

Verify on docs

ZeroRank publishes an API, but per-tier gating wasn't extracted automatically.

Most likely scenario: API access is either included in all paid plans, or it's gated to higher tiers and we need to verify on the live docs page.
Until verified, treat the question "which plan unlocks the API" as open. Don't budget on the assumption it's free with the cheapest paid plan.

API at a glance

API docs

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Auth method

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SDK languages

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OpenAPI spec

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Webhooks

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Structured outputs

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ZeroRank also has an MCP server

If you're wiring ZeroRank into Claude / Cursor / Codex, the MCP server is usually less code than the REST API.

See ZeroRank MCP page

What you can build with the ZeroRank API

Three personas, three different shapes of build. Pick the row that matches how you actually ship.

SOLO DEV / FOUNDER

Glue ZeroRank into your daily workflow

Pull a digest of ranking changes into your morning Slack
Trigger a one-off backfill when something looks off
Pipe data into your own SQLite for ad-hoc queries

Effort: A weekend, one Node or Python script

AGENCY / CONSULTANT

Sell ZeroRank reporting at scale

White-label ZeroRank data into client-branded dashboards
Run scheduled multi-account reports without logging into the ZeroRank UI
Cross-reference with the rest of the client's stack (CRM, analytics, ad spend)

Effort: 1-2 weeks, hits multi-tenant auth quickly

IN-HOUSE ENGINEER

Production pipelines for ZeroRank

Real-time sync into your warehouse on a cron
Custom alerts the dashboard's built-in alerting can't express
Backfill + idempotency handling for ZeroRank data older than the dashboard exposes

Effort: Multi-week project, expect rate-limit tuning

Limits and gotchas

No OpenAPI spec — you write typed clients by hand or use a third-party generator on the docs HTML.
No official SDK detected. Plan on hitting the API directly with your HTTP client of choice.
Rate limits: always read the docs page before scaling — the published limit is usually lower than the practical one and overages can be expensive.

ZeroRank API FAQ

Should I use the API or the MCP server for Claude / Cursor / Codex?

Prefer the MCP server for agent workflows — it's less code and pre-handles auth flows. Use the REST API for scheduled jobs, dashboards, and anything outside an LLM-driven flow.

Does ZeroRank have a public API?

Not documented publicly as of the last check. Some tools expose private/partner APIs — contact sales if you need programmatic access.

Sources

ZeroRank official site: https://zerorank.ai

Joonas RotkoAuthor & Founder of That Marketing Buddy

10+ years in digital marketing. I review marketing software for AI-stack fit: real pricing, MCP and API support, and how cleanly each tool drops into an AI agent workflow, cross-checked against verified data and real user feedback.

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