MTG Bench: tool descriptions scored com.mtgbench/mtgbench

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

Scores, issues and names only

This page shows how MTG Bench (com.mtgbench/mtgbench)'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/com.mtgbench/mtgbench

Average score: 55.1 / 100Cloudy
Tools: 19
Near-identical descriptions: 0

Across the server

Minor
The server has no instructions. Say there, once, what the server is for and when to use it: Claude Code and Gemini CLI read the instructions before the tool descriptions.instructions_missing

Tools

deck_stats

37 / 100Rain

Purpose: 17 / 20
When to use: 0 / 20
Arguments: 5 / 25
Return value: 8 / 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
Major
Arguments without a description: format, commander, cards.param_no_description
Minor
String arguments with no constraint or example: format, commander.loose_string_param

get_card_image

42 / 100Cloudy

Purpose: 20 / 20
When to use: 5 / 20
Arguments: 2 / 25
Return value: 8 / 15
Constraints and side effects: 7 / 10
Examples: 0 / 10

Major
Arguments without a description: name, id, setCode, version.param_no_description
Minor
String arguments with no constraint or example: name, id, setCode, version.loose_string_param
Minor
No `required` list, so every argument is optional.no_required

upgrade_deck

42 / 100Cloudy

Purpose: 17 / 20
When to use: 0 / 20
Arguments: 5 / 25
Return value: 8 / 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
Major
Arguments without a description: format, cards, commander, strategy, budget, maxCardPrice, maxAdds, maxCuts, ownedOnly.param_no_description
Minor
String arguments with no constraint or example: format, commander, strategy.loose_string_param
Minor
The meaning of the boolean argument ownedOnly is unclear.vague_boolean

rate_deck

44 / 100Cloudy

Purpose: 17 / 20
When to use: 0 / 20
Arguments: 5 / 25
Return value: 15 / 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
Major
Arguments without a description: cards, commander.param_no_description
Minor
String arguments with no constraint or example: commander.loose_string_param

search_rules

47 / 100Cloudy

Purpose: 17 / 20
When to use: 5 / 20
Arguments: 5 / 25
Return value: 8 / 15
Constraints and side effects: 7 / 10
Examples: 5 / 10

Major
Arguments without a description: query, kinds, limit.param_no_description
Minor
String arguments with no constraint or example: query.loose_string_param

find_combos

52 / 100Cloudy

Purpose: 17 / 20
When to use: 10 / 20
Arguments: 5 / 25
Return value: 8 / 15
Constraints and side effects: 7 / 10
Examples: 5 / 10

Major
Arguments without a description: cards, commander, format, limit.param_no_description
Minor
String arguments with no constraint or example: commander, format.loose_string_param

get_card_printings

54 / 100Cloudy

Purpose: 20 / 20
When to use: 10 / 20
Arguments: 2 / 25
Return value: 15 / 15
Constraints and side effects: 7 / 10
Examples: 0 / 10

Major
Arguments without a description: name, id, slug.param_no_description
Minor
String arguments with no constraint or example: name, id, slug.loose_string_param
Minor
No `required` list, so every argument is optional.no_required
Minor
The description mentions none of its 3 or more arguments.params_not_in_description

resolve_card_names

54 / 100Cloudy

Purpose: 20 / 20
When to use: 5 / 20
Arguments: 2 / 25
Return value: 15 / 15
Constraints and side effects: 7 / 10
Examples: 5 / 10

Major
Arguments without a description: names, text.param_no_description
Minor
String arguments with no constraint or example: text.loose_string_param
Minor
No `required` list, so every argument is optional.no_required

find_synergies

55 / 100Cloudy

Purpose: 17 / 20
When to use: 10 / 20
Arguments: 5 / 25
Return value: 8 / 15
Constraints and side effects: 10 / 10
Examples: 5 / 10

Major
Arguments without a description: cardNames, colors, format, types, manaValueMin, manaValueMax, limit.param_no_description
Minor
String arguments with no constraint or example: format.loose_string_param

get_card

55 / 100Cloudy

Purpose: 20 / 20
When to use: 15 / 20
Arguments: 2 / 25
Return value: 8 / 15
Constraints and side effects: 10 / 10
Examples: 0 / 10

Major
Arguments without a description: name, id, slug.param_no_description
Minor
String arguments with no constraint or example: name, id, slug.loose_string_param
Minor
No `required` list, so every argument is optional.no_required

check_deck_legality

57 / 100Cloudy

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

Major
Arguments without a description: format, cards, commander.param_no_description
Minor
String arguments with no constraint or example: format, commander.loose_string_param

get_rule

57 / 100Cloudy

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

Major
Arguments without a description: ref.param_no_description
Minor
String arguments with no constraint or example: ref.loose_string_param
Minor
Required identifiers whose description does not say where the value comes from: ref. Name the tool or the place that returns it, or models look it up first.id_source_missing

what_can_i_build

57 / 100Cloudy

Purpose: 17 / 20
When to use: 10 / 20
Arguments: 7 / 25
Return value: 8 / 15
Constraints and side effects: 10 / 10
Examples: 5 / 10

Major
Arguments without a description: limit, missing.param_no_description
Minor
No `required` list, so every argument is optional.no_required

get_card_rulings

60 / 100Cloudy

Purpose: 20 / 20
When to use: 15 / 20
Arguments: 5 / 25
Return value: 8 / 15
Constraints and side effects: 7 / 10
Examples: 5 / 10

Major
Arguments without a description: name.param_no_description
Minor
String arguments with no constraint or example: name.loose_string_param

semantic_card_search

60 / 100Cloudy

Purpose: 17 / 20
When to use: 15 / 20
Arguments: 5 / 25
Return value: 8 / 15
Constraints and side effects: 10 / 10
Examples: 5 / 10

Major
Arguments without a description: query, colors, format, types, manaValueMin, manaValueMax, limit.param_no_description
Minor
String arguments with no constraint or example: query, format.loose_string_param

search_cards

65 / 100Cloudy

Purpose: 20 / 20
When to use: 20 / 20
Arguments: 2 / 25
Return value: 8 / 15
Constraints and side effects: 10 / 10
Examples: 5 / 10

Major
Arguments without a description: name, colors, colorIdentity, types, supertypes, manaValueMin, manaValueMax, format, sets, limit.param_no_description
Minor
String arguments with no constraint or example: name, format.loose_string_param
Minor
No `required` list, so every argument is optional.no_required

search_my_collection

67 / 100Cloudy

Purpose: 20 / 20
When to use: 15 / 20
Arguments: 2 / 25
Return value: 15 / 15
Constraints and side effects: 10 / 10
Examples: 5 / 10

Major
Arguments without a description: query, colors, types, notInDecks, limit.param_no_description
Minor
String arguments with no constraint or example: query.loose_string_param
Minor
No `required` list, so every argument is optional.no_required
Minor
The meaning of the boolean argument notInDecks is unclear.vague_boolean

commander_staples

69 / 100Cloudy

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

Major
Arguments without a description: commander, limit, minSynergy.param_no_description
Minor
String arguments with no constraint or example: commander.loose_string_param

my_collection

73 / 100Clear

Purpose: 20 / 20
When to use: 5 / 20
Arguments: 25 / 25
Return value: 8 / 15
Constraints and side effects: 10 / 10
Examples: 5 / 10

No issues.

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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