Spec Driven Development
MCP Server that facilitates spec-driven development workflows, not just Vibe Coding.
Description from the maker (original English)
Read domain stats, competitors, keywords, rankings and ad history in SpyFu.
These three are never merged into one score: opinions, measurements and popularity are different things.
We have not written a plain-language summary for this one yet. Below are the facts we read from the registry.
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Works in Claude on the web, desktop and mobile:
https://spyfu.usefulapi.io/mcpRun this in your terminal
claude mcp add --transport http spyfu https://spyfu.usefulapi.io/mcpPaste into .cursor/mcp.json in your project, or ~/.cursor/mcp.json
{
"mcpServers": {
"spyfu": {
"url": "https://spyfu.usefulapi.io/mcp"
}
}
}Your browser asks to open the app, then the app shows the settings and asks you to confirm. Key values are left empty for you to fill in.
Paste into .vscode/mcp.json in your project
{
"servers": {
"spyfu": {
"type": "http",
"url": "https://spyfu.usefulapi.io/mcp"
}
}
}Your browser asks to open the app, then the app shows the settings and asks you to confirm. Key values are left empty for you to fill in.
ChatGPT connects only to servers on the internet:
https://spyfu.usefulapi.io/mcpMenu names can differ slightly by plan and over time.
Your choice stays on this device in a cookie; no account needed.
These settings are generated from the maker’s registry entry. If the README says otherwise, follow the README.
Tool names and descriptions exactly as the server reported them on Nov 6, 2026. The maker wrote them, not us; we show them as plain text.
spyfu_get_domain_statsLatest SEO and PPC stats of a domain: monthly organic clicks, paid clicks, budget, ranking keywords, strength. Use past_n_months for more months. SpyFu bills the account for each row returned, so keep page_size small. API: GET domain_stats_api/v2/getLatestDomainStats.
spyfu_get_domain_stats_historyMonthly SEO and PPC stats of a domain for all months SpyFu has (many rows, billed per row). Prefer spyfu_get_domain_stats unless you need the full history. API: GET domain_stats_api/v2/getAllDomainStats.
spyfu_get_domain_stats_for_monthSEO and PPC stats of a domain for one month (yyyy-mm). API: GET domain_stats_api/v2/getDomainStatsForExactDate.
spyfu_get_bulk_domain_statsSEO and PPC stats for up to 20 domains in one call (comma-separated). By default only the latest month per domain. API: GET domain_stats_api/v2/getBulkDomainStats.
spyfu_find_matching_domainsFind domains that match a search phrase, with traffic, budget and strength figures. SpyFu bills the account for each row returned, so keep page_size small. API: GET domain_stats_api/v2/getMatchingDomains.
spyfu_get_top_competitorsTop competitor domains by keyword overlap. channel: seo, ppc or combined. SpyFu bills the account for each row returned, so keep page_size small. API: GET competitors_api/v2/ /getTopCompetitors.
spyfu_get_competing_keywordsKeywords that several domains rank or advertise for (overlap) or that only the first domain has (is_intersection false and exclude_domains set). channel: seo or ppc. SpyFu bills the account for each row returned, so keep page_size small. API: GET keyword_api/v2/kombat/getCompetin
spyfu_get_seo_keywordsOrganic keywords a domain ranks for, with rank, search volume, clicks and cost. search_type picks the view: MostValuable, NewlyRanked, GainedRanks, LostRanks, GainedClicks, LostClicks, JustMadeIt (reached top 10), JustFellOff (left top 10). SpyFu bills the account for each row re
spyfu_get_outranking_keywordsOrganic keywords where domain ranks above compare_domain (search_type TheyOutrankYou) or where domain just passed compare_domain (TheyJustSurpassedYou). SpyFu bills the account for each row returned, so keep page_size small. API: GET serp_api/v2/seo/getOrganicOutrankingKeywords.
spyfu_get_top_pagesTop organic pages of a domain by estimated traffic (search_type MostTraffic) or newly ranking pages (New). SpyFu bills the account for each row returned, so keep page_size small. API: GET serp_api/v2/seo/getTopPages.
spyfu_get_serp_analysisThe organic results (domains, ranks, traffic, strength) for one keyword. Returns up to 105 rows by default; set page_size low. API: GET serp_api/v2/seo/getSerpAnalysisKeywords.
spyfu_get_ranking_historyRank changes of a domain between two dates. query_type: MostValuable, FellFromTop10, MadeTheTop10, NewKeywords, NoLongerRanks, GainedRanks, LostRanks, GainedClicks, LostClicks. SpyFu bills the account for each row returned, so keep page_size small. API: GET organic_history_api/v2
spyfu_get_keyword_informationSearch volume, difficulty, cost per click and clicks for up to 20 given keywords. Billed per keyword row. API: GET keyword_api/v2/related/getKeywordInformation.
spyfu_get_related_keywordsKeyword ideas for a seed keyword. type: related (default), questions, transactions, also_ranks_for, also_buys_ads_for, phrase_match. SpyFu bills the account for each row returned, so keep page_size small. API: GET keyword_api/v2/related/getRelatedKeywords or getKeywordExpansions.
spyfu_get_ppc_keywordsKeywords a domain buys ads for. kind: most_successful (default) or new. SpyFu bills the account for each row returned, so keep page_size small. API: GET keyword_api/v2/ppc/getMostSuccessful or getNewKeywords.
spyfu_get_paid_serpsSearch result pages where a domain showed ads, with ad position and count. SpyFu bills the account for each row returned, so keep page_size small. API: GET serp_api/v2/ppc/getPaidSerps.
spyfu_get_domain_ad_historyAds (copy, position, keywords) a domain ran in search results over time. Rows are costly (about $3 per 1000). SpyFu bills the account for each row returned, so keep page_size small. API: GET cloud_ad_history_api/v2/domain/getDomainAdHistory.
spyfu_get_term_ad_historyAds that ran for one keyword over time, with the advertisers. Rows are costly (about $3 per 1000). SpyFu bills the account for each row returned, so keep page_size small. API: GET cloud_ad_history_api/v2/term/getTermAdHistory.
spyfu_get_api_usageRows used and cost of the SpyFu API for a month (yyyy-mm), in total, by day or by method. API: GET accounts_api/v2/usage/month/{month}[/daily|/method].
We check information anyone can see; we have not read the code. Checks that do not apply are left out of the count. · Checked Nov 6, 2026
The registry name was verified against the domain usefulapi.io (the registry checks domain ownership)
We have not read this repo from GitHub yet
We have not read this repo from GitHub yet
Responded in 43 ms (HTTP 200)
No sign-in needed
Read 19 tool descriptions and found no hidden instructions to the AI
Compared with every active server in this category in the registry. Stars count only when the publisher owns the repo.
It passed 3 of 3 applicable basic checks. We have not read the code. Before adding a key or token, see what access the server asks for and use a key with only the permissions you need.
The registry does not list a required key, though some servers ask you to sign in on first use.
It runs in the maker’s cloud. Connect over the internet with nothing to install, but what you send passes through the maker’s servers.
The GitHub repo last changed –, and the latest version (1.2.3) reached the registry yesterday.
Apps that support MCP, such as Claude Desktop, Claude Code, Cursor and VS Code. It connects by URL, so apps that accept remote MCP servers work too, such as ChatGPT in developer mode.
In the same category: Spec Driven Development, Remote Desktop Commander, dotnet-mcp
Servers in the same category from other makers, sorted by stars.
Reading a card:★ GitHub starsiThree pillars: reviews · checks · usageiUpdated = latest version published to the registryi
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Copied from the maker’s repo as written. PopNx MCP has not reviewed or endorsed it. HTML, images and scripts are removed. Links lead off this site.
Use your SpyFu account from Claude, Cursor, or any MCP client. Read domain stats, competitors, organic and paid keywords, rankings, top pages and ad history. Hosted, no local install: connect with your own credentials.
Live endpoint: https://spyfu.usefulapi.io/mcp · Homepage: https://usefulapi.io
https://spyfu.usefulapi.io/mcp.claude mcp add --transport http spyfu https://spyfu.usefulapi.io/mcp, then run /mcp to log in.{
"mcpServers": { "spyfu": { "url": "https://spyfu.usefulapi.io/mcp" } } }
Add only the URL. Do not add an Authorization header or an API key to the client config: the server signs you in with OAuth, and the login page asks for your SpyFu credentials.
Step-by-step setup, where to find your credentials, and FAQ: https://usefulapi.io/spyfu/
On first connect you provide a SpyFu API ID and a SpyFu Secret Key (SpyFu → Account Settings → API Usage). The server validates it and stores it per user. No keys go in config files.
| Tool | Type | What it does |
|---|---|---|
spyfu_get_domain_stats | read | Get latest domain stats |
spyfu_get_domain_stats_history | read | Get full domain stats history |
spyfu_get_domain_stats_for_month | read | Get domain stats for one month |
spyfu_get_bulk_domain_stats | read | Get stats for several domains |
spyfu_find_matching_domains | read | Find domains matching a keyword |
spyfu_get_top_competitors | read | Get top competitors of a domain |
spyfu_get_competing_keywords | read | Get keywords shared by domains |
spyfu_get_seo_keywords | read | Get organic keywords of a domain |
spyfu_get_outranking_keywords | read | Get keywords where a domain outranks another |
spyfu_get_top_pages | read | Get top pages of a domain |
spyfu_get_serp_analysis | read | Analyze the results page of a keyword |
spyfu_get_ranking_history | read | Get ranking changes of a domain over time |
spyfu_get_keyword_information | read | Get metrics for keywords |
spyfu_get_related_keywords | read | Get related keywords |
spyfu_get_ppc_keywords | read | Get paid keywords of a domain |
spyfu_get_paid_serps | read | Get paid search results of a domain |
spyfu_get_domain_ad_history | read | Get ad history of a domain |
spyfu_get_term_ad_history | read | Get ad history of a keyword |
spyfu_get_api_usage | read | Get API usage for a month |
spyfu_usage_status | meta | Usage status (free-tier meter) |
spyfu_request_feature | meta | Request a missing feature |
spyfu_upgrade | meta | Upgrade to Pro or Pro+ |
spyfu_cancel_subscription | meta | Cancel the Pro subscription |
read tools are read-only; write tools mutate data (clients should confirm them); meta tools report usage, manage your subscription or send a feature request.
| Plan | Price | Limit |
|---|---|---|
| Free | $0 | 50 tool calls / month |
| Pro (per user) | $9/mo or $90/yr (2 months free) | Unlimited* |
\*Pro has a fair use limit of 10,000 tool calls a month on this server. For more, write to support@usefulapi.io.
Pro covers this server only. Subscribe with spyfu_upgrade (it returns a Stripe Checkout link). Cancel any time with spyfu_cancel_subscription: Pro continues to the end of the paid period, with no refund for the current period, and running spyfu_upgrade before then undoes the cancel. Or write to support@usefulapi.io.
MIT — see LICENSE. Documentation only; the server is hosted.