SpyFu MCP by usefulapi: tool descriptions scored io.usefulapi/spyfu

tools/list taken: 2026-11-02 (UTC)
From: Official MCP Registry
Connected to: https://spyfu.usefulapi.io/mcp
Homepage: usefulapi.io/spyfu/
Repository: github.com/m190/usefulapi-mcp
Scoring rules: v2
Removal: support@forecall.dev

Scores, issues and names only

This page shows how SpyFu MCP by usefulapi (io.usefulapi/spyfu)'s tool descriptions scored, the issues found and the names of its tools and parameters. The descriptions are the server's own: read them where the copy came from.

Forecall asked the URL this server lists in the official MCP Registry for its tools/list once, on the date above, without calling any tool. The server may have changed since.

servers/io.usefulapi/spyfu

Average score: 50.0 / 100Cloudy
Tools: 19
Near-identical descriptions: 1

Across the server

Tools whose descriptions are nearly the same

1 of 1 pairs shown, highest description similarity first.
Tool	Tool	Description similarity	Name similarity
spyfu_get_domain_ad_history	spyfu_get_term_ad_history	0.62	0.67

Tools

spyfu_get_keyword_information

43 / 100Cloudy

Purpose: 17 / 20
When to use: 0 / 20
Arguments: 16 / 25
Return value: 0 / 15
Constraints and side effects: 10 / 10
Examples: 0 / 10

Major
Says nothing about when to use it, or when not to.no_usage_context
Minor
Arguments without a description: keywords.param_no_description
Minor
Says nothing about what it returns.no_return_info

spyfu_get_related_keywords

43 / 100Cloudy

Purpose: 17 / 20
When to use: 0 / 20
Arguments: 19 / 25
Return value: 0 / 15
Constraints and side effects: 7 / 10
Examples: 0 / 10

Major
Says nothing about when to use it, or when not to.no_usage_context
Minor
Arguments without a description: keyword, type.param_no_description
Minor
Says nothing about what it returns.no_return_info

spyfu_get_term_ad_history

46 / 100Cloudy

Purpose: 17 / 20
When to use: 0 / 20
Arguments: 19 / 25
Return value: 0 / 15
Constraints and side effects: 10 / 10
Examples: 0 / 10

Major
Says nothing about when to use it, or when not to.no_usage_context
Minor
Its description is nearly the same as spyfu_get_domain_ad_history's (similarity 0.62); only the names and schemas tell them apart. Say in this description when to use spyfu_get_domain_ad_history instead.confusable_pair
Minor
Arguments without a description: keyword.param_no_description
Minor
Says nothing about what it returns.no_return_info

spyfu_find_matching_domains

47 / 100Cloudy

Purpose: 20 / 20
When to use: 0 / 20
Arguments: 20 / 25
Return value: 0 / 15
Constraints and side effects: 7 / 10
Examples: 0 / 10

Major
Says nothing about when to use it, or when not to.no_usage_context
Minor
Arguments without a description: sort_by.param_no_description
Minor
Says nothing about what it returns.no_return_info

spyfu_get_bulk_domain_stats

47 / 100Cloudy

Purpose: 17 / 20
When to use: 0 / 20
Arguments: 23 / 25
Return value: 0 / 15
Constraints and side effects: 7 / 10
Examples: 0 / 10

Major
Says nothing about when to use it, or when not to.no_usage_context
Minor
Says nothing about what it returns.no_return_info

spyfu_get_competing_keywords

47 / 100Cloudy

Purpose: 17 / 20
When to use: 0 / 20
Arguments: 23 / 25
Return value: 0 / 15
Constraints and side effects: 7 / 10
Examples: 0 / 10

Major
Says nothing about when to use it, or when not to.no_usage_context
Minor
Says nothing about what it returns.no_return_info

spyfu_get_outranking_keywords

47 / 100Cloudy

Purpose: 17 / 20
When to use: 0 / 20
Arguments: 23 / 25
Return value: 0 / 15
Constraints and side effects: 7 / 10
Examples: 0 / 10

Major
Says nothing about when to use it, or when not to.no_usage_context
Minor
Says nothing about what it returns.no_return_info

spyfu_get_domain_ad_history

49 / 100Cloudy

Purpose: 17 / 20
When to use: 0 / 20
Arguments: 17 / 25
Return value: 0 / 15
Constraints and side effects: 10 / 10
Examples: 5 / 10

Major
Says nothing about when to use it, or when not to.no_usage_context
Minor
Its description is nearly the same as spyfu_get_term_ad_history's (similarity 0.62); only the names and schemas tell them apart. Say in this description when to use spyfu_get_term_ad_history instead.confusable_pair
Minor
Arguments without a description: keyword_filter, sort_by.param_no_description
Minor
String arguments with no constraint or example: keyword_filter.loose_string_param
Minor
Says nothing about what it returns.no_return_info

spyfu_get_domain_stats_for_month

49 / 100Cloudy

Purpose: 14 / 20
When to use: 0 / 20
Arguments: 23 / 25
Return value: 0 / 15
Constraints and side effects: 7 / 10
Examples: 5 / 10

Major
Says nothing about when to use it, or when not to.no_usage_context
Minor
Says nothing about what it returns.no_return_info

spyfu_get_ppc_keywords

49 / 100Cloudy

Purpose: 17 / 20
When to use: 0 / 20
Arguments: 20 / 25
Return value: 0 / 15
Constraints and side effects: 7 / 10
Examples: 5 / 10

Major
Says nothing about when to use it, or when not to.no_usage_context
Minor
Arguments without a description: kind.param_no_description
Minor
Says nothing about what it returns.no_return_info

spyfu_get_serp_analysis

49 / 100Cloudy

Purpose: 17 / 20
When to use: 0 / 20
Arguments: 18 / 25
Return value: 7 / 15
Constraints and side effects: 7 / 10
Examples: 0 / 10

Major
Says nothing about when to use it, or when not to.no_usage_context
Minor
Arguments without a description: keyword.param_no_description

spyfu_get_api_usage

50 / 100Cloudy

Purpose: 17 / 20
When to use: 0 / 20
Arguments: 23 / 25
Return value: 0 / 15
Constraints and side effects: 10 / 10
Examples: 0 / 10

Major
Says nothing about when to use it, or when not to.no_usage_context
Minor
Says nothing about what it returns.no_return_info

spyfu_get_domain_stats

52 / 100Cloudy

Purpose: 17 / 20
When to use: 0 / 20
Arguments: 23 / 25
Return value: 0 / 15
Constraints and side effects: 7 / 10
Examples: 5 / 10

Major
Says nothing about when to use it, or when not to.no_usage_context
Minor
Says nothing about what it returns.no_return_info

spyfu_get_ranking_history

52 / 100Cloudy

Purpose: 20 / 20
When to use: 0 / 20
Arguments: 20 / 25
Return value: 0 / 15
Constraints and side effects: 7 / 10
Examples: 5 / 10

Major
Says nothing about when to use it, or when not to.no_usage_context
Minor
Arguments without a description: query_type, sort_by.param_no_description
Minor
Says nothing about what it returns.no_return_info

spyfu_get_seo_keywords

52 / 100Cloudy

Purpose: 17 / 20
When to use: 0 / 20
Arguments: 20 / 25
Return value: 0 / 15
Constraints and side effects: 10 / 10
Examples: 5 / 10

Major
Says nothing about when to use it, or when not to.no_usage_context
Minor
Arguments without a description: sort_by.param_no_description
Minor
Says nothing about what it returns.no_return_info

spyfu_get_top_competitors

53 / 100Cloudy

Purpose: 20 / 20
When to use: 0 / 20
Arguments: 21 / 25
Return value: 0 / 15
Constraints and side effects: 7 / 10
Examples: 5 / 10

Major
Says nothing about when to use it, or when not to.no_usage_context
Minor
Arguments without a description: sort_by.param_no_description
Minor
Says nothing about what it returns.no_return_info

spyfu_get_top_pages

54 / 100Cloudy

Purpose: 20 / 20
When to use: 0 / 20
Arguments: 22 / 25
Return value: 0 / 15
Constraints and side effects: 7 / 10
Examples: 5 / 10

Major
Says nothing about when to use it, or when not to.no_usage_context
Minor
Says nothing about what it returns.no_return_info

spyfu_get_paid_serps

59 / 100Cloudy

Purpose: 20 / 20
When to use: 0 / 20
Arguments: 20 / 25
Return value: 7 / 15
Constraints and side effects: 7 / 10
Examples: 5 / 10

Major
Says nothing about when to use it, or when not to.no_usage_context
Minor
Arguments without a description: sort_by.param_no_description

spyfu_get_domain_stats_history

62 / 100Cloudy

Purpose: 17 / 20
When to use: 10 / 20
Arguments: 23 / 25
Return value: 0 / 15
Constraints and side effects: 7 / 10
Examples: 5 / 10

Minor
Says nothing about what it returns.no_return_info

What static scoring cannot tell

This score reads only the text of each description and schema: it says what is written, not what a model will do. Short tools whose names already say what they do, such as browser_close, score low here even when models use them well, and in our measurements current models chose the right tool in one step even from one-line descriptions, as long as the names and schemas differed. What the text cannot show, such as what happens over several steps and whether an added sentence helps or misleads, is what an evaluation measures, on the Pro and Team plans.

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