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ContextBolt SEO vs Semrush MCP · an honest comparison

ContextBolt SEO vs Semrush MCP

Semrush MCP costs nothing. Getting to it costs $199 a month if you are a new customer.

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People see your result but rarely click it. Ask your agent to investigate.

7,440Impressions 0.85%Click-through rate

You ask in your agent. The answers land on your SEO Dashboard, where you can filter them and come back to them later. Sample data shown.

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Here is the verdict.

ContextBolt SEO is the cheaper way to put SEO data in your agent by a wide margin. It is $35 a month standalone, with page audits, AI visibility research, a free Search Console connection and an SEO Dashboard that keeps every result. Semrush MCP is included with qualifying plans, and for a new account that means Starter at $199 a month, with 50,000 API units per renewal. If you already hold an eligible Semrush subscription, the MCP is bundled with it and the index is excellent, and even then the audits, Search Console data and SEO Dashboard are things that surface does not carry. If you are buying from scratch to get an agent connection, the math is not close. Seven-day trial with 100 credits, card required.

Where ContextBolt SEO wins
  • $35 against a $199 entry ticketFor a new account, Semrush MCP means Starter at $199. ContextBolt is a standalone $35 subscription with the agent connection as the product, not a perk.
  • Audits, AI answers and your Google dataPage audits your agent can act on, AI visibility research across four engines for live checks, and a one-click read-only Search Console connection with daily snapshots.
  • The research does not vanish into a chatEvery successful lookup saves to your SEO Dashboard automatically, so you can filter and revisit it rather than scrolling back through last week's conversation.
What Semrush MCP is built for
  • Semrush has MCP too, bundled with eligible plansSemrush One Starter and Pro+, plus legacy Classic Pro and Guru, include MCP access with 50,000 API units per renewal, so if you already pay for one of those the endpoint is yours. What differs is what sits behind it. ContextBolt's endpoint also carries page audits, your Search Console data and an SEO Dashboard.
  • Semrush's index and reportingA deep first-party database and proprietary metrics that a lot of client reporting is built on. ContextBolt runs on Ahrefs-grade DataForSEO data, which is built for deciding what to publish and what to fix.
  • Allowances measure different work50,000 API units per renewal and 1,000 ContextBolt credits are not comparable numbers. Price a real task instead of matching them.

Here is every feature side by side.

FeatureContextBolt SEOSemrush MCP
What you have to buy $35/month, nothing else (ahead) Starter from $199/month for new buyers. Eligible legacy plans vary
Keyword, SERP and competitor research Yes, on DataForSEO data Yes, on Semrush's own database
Backlink data Overview, referring domains, competitor gap Deep first-party index
Page audits On demand, up to 50 pages per run (ahead) Site Audit lives in the suite, not the MCP
Your Search Console data One-click read-only connect, daily snapshots, free (ahead) Not part of the MCP
AI visibility Historical Google AI and ChatGPT, live checks in four engines Plan-specific AI visibility tools. Prompt tracking starts on Starter
Keeping what you find Saves to your SEO Dashboard automatically (ahead) Whatever is in the chat
Usage allowance 1,000 credits a month, costs vary by tool 50,000 API units per renewal

ContextBolt SEO ahead on that row

What each one costs.

ContextBolt SEO $35/mo for 1,000 credits Keyword research, SERP, domain data, AI visibility, memory, plus your SEO Dashboard
Semrush MCP $199+/mo Semrush plan View pricing

The longer story.

Semrush MCP does not cost anything. It comes with the plan. The plan is the expensive part, and which plan is the bit people get wrong.

For a new account, MCP access means Semrush One Starter at $199 a month. Not the $139 SEO plan, which is the one most comparisons quote. The current docs list One Starter and Pro+, plus legacy Classic Pro and Guru, each with 50,000 API units per renewal. One Advanced and Classic Business need an extra units package on top.

ContextBolt SEO is $35 a month, standalone, with the agent connection as the product rather than a perk.

Check what you already have first

If you already pay for Semrush, look at your entitlement first, because legacy accounts differ from the new tiers. If MCP is included, you already have an agent connection to the Semrush index. What it does not carry is site audits, your Search Console data or a record of what you found, which is the part of this page that still applies to you.

The comparison that matters is for someone deciding now, mostly because they want SEO research inside Claude or Codex. Paying $199 a month for that is a lot, and most of what you get for it is a suite you will not open.

What $35 covers

Keyword research, difficulty and SERPs. Domain and competitor analysis. Backlink overview, referring domains and competitor gaps. Page audits on demand, up to 50 pages a run. AI visibility research, historical across Google AI and ChatGPT with live per-question checks in ChatGPT, Gemini, Claude and Perplexity.

Plus a Search Console connection, read-only, one click, free, with daily snapshots. So your actual Google performance sits next to the estimates in the same conversation.

What the MCP surface does not carry

Site audits: Semrush’s crawler lives in the suite, not the MCP. Your agent cannot run one through it. ContextBolt’s audits run on demand and the agent can read the findings and draft the fixes without leaving the chat.

A record of what you found: Semrush MCP answers into the conversation. ContextBolt saves every successful lookup to your SEO Dashboard automatically, so you can browse and filter it a fortnight later instead of hunting through chat history.

Your own Google data: The MCP reads the Semrush index, not your Search Console. ContextBolt connects Search Console read-only in one click and takes daily snapshots, so your real clicks and impressions are in the chat rather than a model’s guess at them.

Where Semrush MCP still fits

The database. It is deep, it is first-party, and its metrics are what a lot of client reporting is built on. If a client expects Semrush figures, or you use the wider suite, PPC research and all, the MCP is the way to bring that index into your agent.

That is a reporting dependency, and it is not what most people buying an agent connection from scratch have. ContextBolt runs on Ahrefs-grade DataForSEO data, sound in direction for choosing what to publish and what to fix, and adds the audits, Search Console data and SEO Dashboard the Semrush surface does not carry, for $35 rather than $199.

Do not match the allowances

50,000 API units and 1,000 credits are not the same unit and cannot be converted. Price a task you actually run, in both, and compare that.

The Semrush MCP pricing guide works through which plans qualify and what the units really buy. The SEO tool pricing guide does the same across the category.

Try it on one page

Connect it to your agent, connect Search Console, and ask why a page is underperforming.

If that gets you to a change worth publishing, you have your answer about the $199. Start the 7-day trial with 100 credits. A card is required, and it becomes $35 a month unless you cancel before the trial ends.

Common questions.

Which Semrush plans include MCP?

The current docs list Semrush One Starter and Pro+, plus legacy Classic Pro and Guru, with 50,000 API units per renewal. One Advanced and Classic Business need an extra units package. For a new customer that means Starter at $199, not the $139 SEO plan.

I already pay for Semrush. What should I do?

Check your entitlement before anything else, because legacy plans differ from the new ones. If your subscription includes MCP, you already have keyword data in your agent, and nobody should pay twice for that. What the Semrush surface does not carry is site audits, a Search Console connection and a saved record of the research, so the question becomes whether those are worth $35 on top. The seven-day trial is the cheap way to find out, on a page you already want to fix.

Is $35 really the whole cost?

For ContextBolt, yes. There is no suite underneath it and no annual commitment. Different tools spend different amounts of your 1,000 monthly credits, audits charge per page up to 50 a run, and your AI app bills you separately for its own usage.

Does Semrush MCP run site audits?

No. Site Audit lives in the Semrush suite rather than the MCP surface, so your agent cannot run one through it. ContextBolt audits on demand and the agent can read the findings and draft the fixes in the same conversation.

What about the data quality difference?

Semrush's database is deep and well built. ContextBolt runs on Ahrefs-grade DataForSEO data, which is decision-useful and directionally right rather than identical. A client report quoting Semrush metrics needs Semrush. For choosing what to publish and what to fix, which is what an agent connection is for, the difference rarely changes the decision.

Go deeper: ContextBolt SEO vs Ahrefs MCP · ContextBolt SEO vs DataForSEO MCP · ContextBolt SEO vs Semrush · Semrush MCP Pricing: Which Plan You Actually Need · SEO Tool Pricing in 2026: Compare the Plan You Need · 8 Best Semrush Alternatives in 2026 (Cheaper and AI-Native) · all comparisons

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