# Semrush API + MCP vs Similarweb (slim)

> Semrush API + MCP scores 53.1 (D) on agent readiness against Similarweb's 46 (D), and leads in 6 of 7 scored categories. Both do seo keywords. Category scores, facts, verdicts and agent notes side by side.

- Full: https://www.anchorterminal.com/compare/semrush-vs-similarweb.md (~2,000 tokens) · this version ~630 tokens · JSON https://www.anchorterminal.com/compare/semrush-vs-similarweb.json · canonical https://www.anchorterminal.com/compare/semrush-vs-similarweb
- Index: https://www.anchorterminal.com/llms.txt · API: https://www.anchorterminal.com/api/v1/index.json · Updated: 2026-10-08

Semrush API + MCP scores 53.1 (D) on agent readiness against Similarweb's 46 (D), and leads in 6 of 7 scored categories. Both do seo keywords.

- Semrush API + MCP: D 53.1, rank #553 of 722 · https://www.anchorterminal.com/tools/semrush.min.md
- Similarweb: D 46, rank #652 of 722 · https://www.anchorterminal.com/tools/similarweb.min.md
- Semrush API + MCP, 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 63; Agent ergonomics, 77 against 67; Payments & pricing, 17 against 5; Maintenance & community, 57 against 33; Transparency & trust, 67 against 60.
- Similarweb, good for Traffic and engagement estimates, traffic channel mix and keyword click data for domains an agent doesn't own, with app, company and retail data on the same key.

| Category | Semrush API + MCP | Similarweb |
| --- | --- | --- |
| Reliability (16%) | 34 | 35 |
| Performance (10%) | pending | pending |
| Schema & documentation (13%) | 70 | 63 |
| Agent ergonomics (13%) | 77 | 67 |
| Security & auth (14%) | 54 | 52 |
| Payments & pricing (10%) | 17 | 5 |
| Task success (10%) | pending | pending |
| Maintenance & community (7%) | 57 | 33 |
| Transparency & trust (7%) | 67 | 60 |

| Fact (where they differ) | Semrush API + MCP | Similarweb |
| --- | --- | --- |
| Vendor | Semrush Inc. (an Adobe company) | Similarweb Ltd. |
| Hosted endpoint | `https://api.semrush.com` | `https://api.similarweb.com` |
| Transports | HTTP, Streamable HTTP | HTTP |
| Licence | Proprietary service under the Semrush terms of service | Proprietary service under Similarweb's terms of use |
| Tools exposed | 14 | none |
| Read-only variant documented | yes | no |
| Last release | 2026-09-04 | 2026-09-24 |
| Terms last updated | 2026-08-25 | 2025-03-19 |
| Privacy policy last updated | 2025-10-13 | 2026-06-30 |
| Arbitration or class-action waiver | yes | not found in the text |