MCP HeartbeatTHE MCP OBSERVATORY
Public workspace

Explore

Evidence for your next connection.

Independent measurements of remote MCP servers. Every observation has a timestamp.

Read-only probes

MCP server · Code & DevOps

SpyFu MCP by usefulapi

Read domain stats, competitors, keywords, rankings and ad history in SpyFu.

Checks passed
14 / 22

0 failed · 8 not measured

Median response
54 ms

Median of successful probes over 7 days

30-day uptime
Not measured

Share of countable probes over 30 days, including daily rollups. Auth challenges are excluded.

Discovered tools
19

Tool definitions returned by this server

Independent monitoring

Health & checks

Status history

Outdated check

Last connection measurement is over 24 hours old. Current availability is unknown.

Last checked
Check summary by test group
Test areaPassedFailedUnmeasured
ConnectionCan a client connect and discover tools?
500
Reliability & speedDoes it respond consistently and quickly?
004
Access & authenticationWhat is required to use this server?
102
Tool qualityAre the tool definitions usable by an agent?
400
Publisher identityCan the publisher be traced to its source?
402

Unmeasured means there is not enough evidence to decide. How these checks work

Inspect individual checks 22 recorded

Core

  • Pass
    Reachable

    Latest probe returned HTTP 200 in 54 ms.

  • Pass
    Valid handshake

    protocolVersion 2025-11-25, serverInfo.name spyfu-mcp.

  • Pass
    Lists tools

    tools/list returned 19 tools.

  • Pass
    Current protocol

    Negotiated 2025-11-25. The bar is 2025-06-18 or newer.

  • Pass
    HTTPS

    The endpoint URL is https.

Performance

  • Not measured
    Fast (p50)

    Median latency 54 ms over 1 samples in 7 days. The bar is 1000 ms. Need at least 5 samples.

  • Not measured
    Consistent (p95)

    95th percentile 54 ms over 1 samples in 7 days. The bar is 3000 ms. Need at least 20 samples.

  • Not measured
    Reliable (uptime)

    1 of 1 attempts returned a tool list in 30 days (100%). The bar is 99%. Need at least 30 samples.

  • Not measured
    Stable tool list

    Fewer than two successful probes in 30 days, so tool-list stability is not measured.

Access

  • Pass
    Open access

    tools/list succeeded with no credential, and the record declares none.

  • Not measured
    Standard auth

    Auth is not required, so the OAuth metadata check does not apply.

  • Not measured
    Free tier cited

    No publisher quote has been checked.

Tools

  • Pass
    Tools described

    Every tool description is at least 20 characters.

  • Pass
    Valid input schemas

    Every inputSchema is a JSON Schema object.

  • Pass
    Parameters documented

    88 of 102 parameters have a description (86%). The bar is 80%.

  • Pass
    Safety hints

    Every tool sets readOnlyHint or destructiveHint.

Publisher

  • Pass
    Verified namespace

    Listed in the Official MCP Registry.

  • Pass
    Website matches publisher

    The website host matches the reverse-domain namespace.

  • Pass
    Source repo linked

    A repository URL is on file.

  • Not measured
    Repo owner matches

    This namespace is not an io.github login, so the owner comparison does not apply.

  • Pass
    Recently updated

    Updated 2026-11-10T23:34:58.515794Z, within 180 days.

  • Not measured
    Open-source licence

    The GitHub licence lookup has not returned an OSI result yet.

Start using SpyFu MCP by usefulapi

Connect to this server

Choose your client, copy the configuration, then enable the server in your client’s MCP settings.

Run this command in your terminal, then restart Claude Code.

Claude Code

claude mcp add --transport http spyfu-mcp-by-usefulapi https://spyfu.usefulapi.io/mcp

Capabilities

Tools 19

spyfu_find_matching_domains

Find 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.

Discovered
spyfu_get_api_usage

Rows 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].

Discovered
spyfu_get_bulk_domain_stats

SEO 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.

Discovered
spyfu_get_competing_keywords

Keywords 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/getCompeting<Seo|Ppc>Keywords.

Discovered
spyfu_get_domain_ad_history

Ads (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.

Discovered
spyfu_get_domain_stats

Latest 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.

Discovered
spyfu_get_domain_stats_for_month

SEO and PPC stats of a domain for one month (yyyy-mm). API: GET domain_stats_api/v2/getDomainStatsForExactDate.

Discovered
spyfu_get_domain_stats_history

Monthly 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.

Discovered
spyfu_get_keyword_information

Search volume, difficulty, cost per click and clicks for up to 20 given keywords. Billed per keyword row. API: GET keyword_api/v2/related/getKeywordInformation.

Discovered
spyfu_get_outranking_keywords

Organic 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.

Discovered
spyfu_get_paid_serps

Search 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.

Discovered
spyfu_get_ppc_keywords

Keywords 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.

Discovered
spyfu_get_ranking_history

Rank 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/historic/getHistoricRankingsForDomain.

Discovered
spyfu_get_related_keywords

Keyword 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.

Discovered
spyfu_get_seo_keywords

Organic 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 returned, so keep page_size small. API: GET serp_api/v2/seo/getSeoKeywords.

Discovered
spyfu_get_serp_analysis

The 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.

Discovered
spyfu_get_term_ad_history

Ads 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.

Discovered
spyfu_get_top_competitors

Top 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/<channel>/getTopCompetitors.

Discovered
spyfu_get_top_pages

Top 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.

Discovered

Recent measurements

Probe history

View status
Latest stored probes. Raw probe rows are kept for 14 days.
CheckedResultResponseTools
Connected54 ms19