Get an audit

Head to head · Keyword data · October 2026 research run

Keywords Everywhere API + MCP vs Semrush API + MCP

Semrush API + MCP scores 53.1 (D) on agent readiness against Keywords Everywhere API + MCP's 47.2 (D), and leads in 3 of 7 scored categories. Keywords Everywhere API + MCP leads on reliability and maintenance & community. Both do keyword data.

Best SEO and search visibility data for AI agents · All 45 seo comparisons

Keywords Everywhere API + MCPKeywords Everywhere (Axeman Technology Solutions LLP) · HTTP API D47.2/100#836 of 950 Semrush API + MCPSemrush Inc. (an Adobe company) · HTTP API D53.1/100#721 of 950

Which one, for what

Keywords Everywhere API + MCP D

Good for An agent that needs Google Keyword Planner volume, CPC and competition for lists of keywords at a low price per keyword, plus keyword ideas and a quick view of a site's ranking keywords, traffic estimate and top backlinks.

Ahead on

  • Reliability, 42 against 34
  • Maintenance & community, 63 against 57

Watch for

No free credits or trial. Data calls need an annual plan, from $84 for 100,000 credits that expire after a year

Semrush API + MCP D

Good for Teams already paying for Semrush who want an agent to pull keyword, backlink, ranking and traffic estimates in one place, mainly through the MCP server.

Ahead on

  • Schema & documentation, 70 against 48
  • Agent ergonomics, 77 against 54
  • Security & auth, 54 against 47

Watch for

Domain, URL, Trends, Position Tracking and Site Audit reports are version 3 only, where the one key is a URL parameter and can't be revoked

Score by category

CategoryWeight this runKeywords Everywhere API + MCPSemrush API + MCPEdge
Reliability16%204234Keywords Everywhere API + MCP +8
Performance10%pendingpendingpendingnot scored in this run
Schema & documentation13%16.24870Semrush API + MCP +22
Agent ergonomics13%16.25477Semrush API + MCP +23
Security & auth14%17.54754Semrush API + MCP +7
Payments & pricing10%12.52017Keywords Everywhere API + MCP +3
Task success10%pendingpendingpendingnot scored in this run
Maintenance & community7%8.86357Keywords Everywhere API + MCP +6
Transparency & trust7%8.86867Keywords Everywhere API + MCP +1
Negative events≤1500
Total47.2 · D53.1 · D

Facts side by side

FactKeywords Everywhere API + MCPSemrush API + MCP
KindHTTP APIHTTP API
VendorKeywords Everywhere (Axeman Technology Solutions LLP)Semrush Inc. (an Adobe company)
Hosted endpointhttps://api.keywordseverywhere.comhttps://api.semrush.com
TransportsHTTP, Streamable HTTPHTTP, Streamable HTTP
AuthOAuth or keyOAuth or key
PricingPaidPaid
Price for keyword data$0.0008 per recordnot published
x402nono
LicenceProprietary service under the Keywords Everywhere Terms of Service. The vendor's n8n community node on npm is MITProprietary service under the Semrush terms of service
Tools exposed1414
Read-only variant documentedyesyes
llms.txtnoyes
MCP registrycom.keywordseverywhere/keywords-everywherenot listed
Last release2026-09-102026-09-04
Terms last updated2023-05-302026-08-25
Privacy policy last updated2025-08-152025-10-13
Customer content may train modelsnot found in the textnot found in the text
Terms restrict automated accessnot found in the textyes
Terms restrict benchmarkingnot found in the textyes
Terms or service can change without noticenot found in the textnot found in the text
Arbitration or class-action waivernot found in the textyes
Popularity7 npm/wknone

Verdicts

Keywords Everywhere API + MCP

Fourteen read-only lookups with a published credit cost each, available over REST and a hosted MCP server listed in the official registry. Data needs an annual plan from $84, with no trial. No OpenAPI file, no REST rate limit and no API changelog were found, and the status page shows outages on seven of the last 90 days.

Semrush API + MCP

The hosted MCP server exposes 14 tools that load a report's parameters on demand, and version 4 API keys can be read-only, time-limited and revoked. Most reports still sit in version 3, whose single key travels in the URL and can't be revoked. No status page, OpenAPI file or API unit price was found.

Before you call either

Keywords Everywhere API + MCP

  1. Send the key as Authorization: Bearer <key> to https://api.keywordseverywhere.com/v1. The same key works on the MCP server
  2. Call GET /v1/account/credits (free) before a large pull. A short balance returns 402 with 402 Insufficient Credits
  3. Set num on domain, URL and backlink lookups. It accepts 1 to 10,000 and every returned row is charged 1, 2 or 5 credits
  4. Batch up to 100 keywords in one get_keyword_data call and set country. Without it the figures are global
  5. Keep MCP use under 120 tool calls a minute per account, and wait a minute after a Too many requests error

Semrush API + MCP

  1. Use the MCP server at https://mcp.semrush.com/v2/mcp where the host supports it. Call a discovery tool, then get_report_schema, then execute_report
  2. Set limit or display_limit on every per-line report. A backlinks row costs 40 to 45 units and a historical keyword row 50
  3. Check the unit balance before large pulls. A per-line report returns only the lines the balance covers, with no error
  4. Send the version 4 key as Authorization: Apikey <key>, never as ?key=. Version 3 accepts only the query parameter, so keep those URLs out of logs
  5. Stay under 10 requests a second and 10 concurrent requests per account, and retry only when error.retryable is true

Questions

Which is better for AI agents, Keywords Everywhere API + MCP or Semrush API + MCP?

Semrush API + MCP scores 53.1 (D) on agent readiness against Keywords Everywhere API + MCP's 47.2 (D), and leads in 3 of 7 scored categories. Keywords Everywhere API + MCP leads on reliability and maintenance & community.

Do Keywords Everywhere API + MCP and Semrush API + MCP need an API key?

Both take an API key or an OAuth sign-in.

Can an agent call Keywords Everywhere API + MCP and Semrush API + MCP without installing anything?

Yes. Keywords Everywhere API + MCP has a hosted endpoint at https://api.keywordseverywhere.com and Semrush API + MCP at https://api.semrush.com.

Other comparisons with Keywords Everywhere API + MCP or Semrush API + MCP

Machine-readable

For companies

Do agents find, use and choose your tools?

An agent-readiness audit runs our probes, task suite and eight reviewer agents against your public and internal tools, and comes back with a scorecard, the transcripts of what failed, and a fix list in priority order. From $2,500, re-run included. We never take payment to move a rank. We do help companies earn one.

Get an auditSee a sample report