Best Keyword Research API alternatives

1

SEO Data

by superagnt.com

A

SEO data for AI agents: Google SERP, keyword research, backlinks, site audits, AI answer visibility.

2

AltoRank

by altorank.co

A

Readiness audits, Search Console, keyword research, and SEO drafts into a review queue.

3

AIsa Domain & Keyword Research

by aisa.one

B

Domain authority, ranked and related keywords, difficulty, intent and competitors.

4

Google Ads + Meta Ads + SEO/GEO MCP

by irinabuht12-oss

A

Google Ads, Meta Ads, SEO, GEO & GA4 MCP by Ryze AI - audits, reports, keywords, Search Console.

5

Frase SEO

by frase.io

B

SEO, GEO & AI Visibility — research, write, optimize, publish & monitor content. 121 tools.

Verifies news stories, mines SEO keywords, builds schema and reviews your draft. You write it.

7

Connskill Growth

by CONN-SKILL

B

Local market checks, rankings and keyword research as JSON, paid per call via x402 in USDC on Base.

8

Rankability

by gotchseo

A

SEO research, AI visibility, content, and audits through your Rankability workspace.

9

SEOmatic

by seomatic.ai

A

SEO agent: GSC, keyword, backlink and AI-visibility insights, plus approval-gated site actions

Keyword ideas and question discovery for any seed term - volumes, difficulty, and SERP intent.

11

Cite42

by cite42.dev

B

AI visibility, brand rankings, citations, SEO keywords, trends, and scheduled prompt trackers.

12

Robot Speed

by robot-speed

B

SEO tools for AI agents: audits, Core Web Vitals, keywords, AI visibility, traffic, backlinks.

13

AIsa Keyword Volume & Ads

by aisa.one

B

Search volume, keyword ideas, difficulty, clickstream volumes and search trends.

14

BlogSEO

by blogseo.io

B

SEO that executes: keywords, calendar, articles written, scored and published to your CMS, backlinks

15

SE Ranking

by seranking.com

B

SE Ranking SEO: keywords, backlinks, domains, SERP, audits, rank tracking, AI Search visibility.

16

SearcherLite

by searcherlite.com

B

SEO data for Google keywords, domains, backlinks and AI visibility. Pay per lookup, no subscription.

17

pSEO Engine

by quantumcx.net

C

Programmatic SEO as callable tools: research, generate, audit and publish landing pages.

18

Rankdelta

by alordincans

C

Open-source AI SEO over MCP: audits, ranks, keywords, backlinks + AI visibility (GEO).

19

Brandvane

by Pardesco

C

SEO research and AI visibility evidence. Account required; new research uses paid allowances.

20

SupaMarketers Data

by PuppyChris

C

Keyword data, web extraction and public social search for marketing research workflows.

21

Suede Skills MCP

by JasonColapietro

A

Read-only access to 71 Suede skills: discovery, install options, SEO audits, A-F grading.

22

HasData TikTok

by hasdata.com

A

Public TikTok profiles, videos, comments and keyword search as JSON. No developer account.

23

HasData Indeed

by hasdata.com

A

Indeed job listings by keyword and location, and full postings, as structured JSON.

24

Google Search Console

by AKzar1el

A

Google Search Console MCP for analytics, indexing, sitemaps, and SEO diagnostics.