Keyword Tool (keywordtool.io) and seodata.dev both return search volume, CPC and competition, and both run an official remote MCP server, but they differ a lot in scope and price.
- Keyword Tool pulls keyword ideas from autocomplete on 16 platforms, including Google, YouTube, Amazon, TikTok, Etsy and the app stores. Pro plans start at $88 a month ($68 billed yearly) for 50 requests a day, with up to 48 months of history, device breakdowns, the web app, API and MCP. The free version shows suggestions with volume for only some keywords, and the free MCP guest mode returns volume for the first 5 keywords, 120 requests a day.
- seodata.dev focuses on Google: monthly search volume, CPC, competition and similar keywords with their own volumes for 50+ countries. It’s free for 20 lookups a day without signing up or 500 a month with a free key, and $4.99 a month for unlimited, through an HTTP API or a remote MCP server for Claude, ChatGPT and Cursor.
Keyword Tool suits research across many platforms; seodata.dev suits Google keyword numbers at a much lower price.
At a glance
| seodata.dev | Keyword Tool | |
|---|---|---|
| Free use | 20 volume lookups a day without signup, 500 a month with a free key | Keyword suggestions without signup; free MCP guest mode returns volume for the first 5 keywords, 120 requests a day |
| Paid entry point | $4.99 a month | $88 a month or $68 a month billed yearly (Starter) |
| Platforms | 16, including YouTube, Amazon, TikTok, Etsy and app stores | |
| Data | Monthly volume, CPC, competition, similar keywords with their own volumes | Volume, CPC, competition, monthly history up to 48 months, device split, autocomplete suggestions |
| Countries | 50+ | About 200 for Google |
| API | Yes, on every plan including free | Yes, on paid plans |
| MCP server | Remote, works without sign-in | Remote, official, Google and Bing |
Prices and limits from Keyword Tool pricing, its API page and MCP page, checked 12 October 2026.
When Keyword Tool is the better choice
Keyword Tool is built for breadth. It pulls suggestions from autocomplete on 16 platforms, so if you research YouTube titles, Amazon listings or TikTok topics it covers ground seodata.dev doesn’t. Paid plans include up to 48 months of history, device breakdowns and large daily volume quotas, and it has a polished official MCP server for Google and Bing.
When seodata.dev is the better choice
seodata.dev fits when you need Google search volume and don’t need sixteen platforms. It costs $4.99 a month against Keyword Tool’s $68 to $88 entry point, and the free tiers give real volume, CPC and competition for every keyword you look up rather than a handful. In Claude or ChatGPT, each lookup also returns similar keywords with their own volumes, so the assistant can suggest better targets without a separate suggestions step.
Try it
Paste this URL into Claude, ChatGPT, Cursor or any MCP client to start without an account:
https://mcp.seodata.dev/mcpOr call the API:
curl "https://api.seodata.dev/v1/keyword?q=keyword+tool&country=us"The MCP setup guide covers each client, and pricing has the free key and Unlimited.