# Moddable Games Tools (games.moddable.tools/moddable-games-tools): tool descriptions scored - tools/list taken: 2026-11-02 (UTC) - From: [Official MCP Registry](https://registry.modelcontextprotocol.io/v0/servers/games.moddable.tools%2Fmoddable-games-tools/versions/latest) - Connected to: https://tools.moddable.games/mcp - Repository: https://github.com/Moddable-Games/moddable-website - Scoring rules: v2 - Tools: 89 - Average: 33.4 / 100 (Rain) - Near-identical pairs: 1 This page shows how Moddable Games Tools (games.moddable.tools/moddable-games-tools)'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. ## Across the server - Major: 89 tools. Above 40, models choose less accurately. - 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. ## Tools - `chess_analyze_position`: 9 / 100 - Major: The description only restates the name (9 words). - Major: Says nothing about when to use it, or when not to. - Major: Arguments without a description: variant, depth. - Minor: String arguments with no constraint or example: variant. - Minor: No `required` list, so every argument is optional. - Minor: Says nothing about what it returns. - Minor: The description says the tool is deprecated. Name the replacement, and consider taking the tool out of tools/list: models avoid it when asked for what it does. - `chess_get_status`: 9 / 100 - Major: The description only restates the name (9 words). - Major: Says nothing about when to use it, or when not to. - Major: Arguments without a description: variant. - Minor: String arguments with no constraint or example: variant. - Minor: No `required` list, so every argument is optional. - Minor: Says nothing about what it returns. - Minor: The description says the tool is deprecated. Name the replacement, and consider taking the tool out of tools/list: models avoid it when asked for what it does. - `chess_list_variants`: 9 / 100 - Major: The description only restates the name (8 words). - Major: Says nothing about when to use it, or when not to. - Major: Arguments without a description: group. - Minor: String arguments with no constraint or example: group. - Minor: No `required` list, so every argument is optional. - Minor: Says nothing about what it returns. - Minor: The description says the tool is deprecated. Name the replacement, and consider taking the tool out of tools/list: models avoid it when asked for what it does. - `chess_get_opening_book`: 14 / 100 - Major: Says nothing about when to use it, or when not to. - Major: Arguments without a description: variant. - Minor: String arguments with no constraint or example: variant. - Minor: No `required` list, so every argument is optional. - Minor: Says nothing about what it returns. - Minor: No constraints, side effects, auth or rate limits described, and no annotations. - `chess_make_moves`: 16 / 100 - Major: Says nothing about when to use it, or when not to. - Major: Arguments without a description: moves, variant. - Minor: String arguments with no constraint or example: variant. - Minor: Says nothing about what it returns. - Minor: The description says the tool is deprecated. Name the replacement, and consider taking the tool out of tools/list: models avoid it when asked for what it does. - `chess_get_legal_moves`: 17 / 100 - Major: Says nothing about when to use it, or when not to. - Major: Arguments without a description: variant. - Minor: String arguments with no constraint or example: variant. - Minor: No `required` list, so every argument is optional. - Minor: Says nothing about what it returns. - Minor: The description says the tool is deprecated. Name the replacement, and consider taking the tool out of tools/list: models avoid it when asked for what it does. - `chess_make_move`: 20 / 100 - Major: Says nothing about when to use it, or when not to. - Major: Arguments without a description: move, variant. - Minor: String arguments with no constraint or example: variant. - Minor: Says nothing about what it returns. - Minor: The description says the tool is deprecated. Name the replacement, and consider taking the tool out of tools/list: models avoid it when asked for what it does. - `chess_validate_move`: 20 / 100 - Major: Says nothing about when to use it, or when not to. - Major: Arguments without a description: move, variant. - Minor: String arguments with no constraint or example: variant. - Minor: Says nothing about what it returns. - Minor: The description says the tool is deprecated. Name the replacement, and consider taking the tool out of tools/list: models avoid it when asked for what it does. - `rpg_loot`: 23 / 100 - Major: The description only restates the name (9 words). - Major: Says nothing about when to use it, or when not to. - Minor: No `required` list, so every argument is optional. - Minor: Says nothing about what it returns. - Minor: No constraints, side effects, auth or rate limits described, and no annotations. - `board_gallery_get`: 24 / 100 - Major: The description only restates the name (9 words). - Major: Says nothing about when to use it, or when not to. - Minor: Says nothing about what it returns. - Minor: No constraints, side effects, auth or rate limits described, and no annotations. - `game_nukes_combat`: 24 / 100 - Major: The description only restates the name (7 words). - Major: The description is too short (7 words). - Major: Says nothing about when to use it, or when not to. - Minor: String arguments with no constraint or example: attacker, defender. - Minor: The description mentions none of its 3 or more arguments. - Minor: Says nothing about what it returns. - Minor: No constraints, side effects, auth or rate limits described, and no annotations. - `hex_compute_fov`: 24 / 100 - Major: The description only restates the name (8 words). - Major: Says nothing about when to use it, or when not to. - Minor: String arguments with no constraint or example: seed. - Minor: The description mentions none of its 3 or more arguments. - Minor: Says nothing about what it returns. - Minor: No constraints, side effects, auth or rate limits described, and no annotations. - `hex_export_svg`: 24 / 100 - Major: The description only restates the name (8 words). - Major: Says nothing about when to use it, or when not to. - Minor: String arguments with no constraint or example: game, seed, style. - Minor: The description mentions none of its 3 or more arguments. - Minor: Says nothing about what it returns. - Minor: No constraints, side effects, auth or rate limits described, and no annotations. - `hex_pathfind`: 24 / 100 - Major: The description only restates the name (7 words). - Major: The description is too short (7 words). - Major: Says nothing about when to use it, or when not to. - Minor: String arguments with no constraint or example: seed. - Minor: The description mentions none of its 3 or more arguments. - Minor: Says nothing about what it returns. - Minor: No constraints, side effects, auth or rate limits described, and no annotations. - `oracle_list_tables`: 24 / 100 - Major: The description only restates the name (7 words). - Major: The description is too short (7 words). - Major: Says nothing about when to use it, or when not to. - Minor: String arguments with no constraint or example: system. - Minor: Says nothing about what it returns. - Minor: No constraints, side effects, auth or rate limits described, and no annotations. - `rules_get_variant`: 24 / 100 - Major: The description only restates the name (7 words). - Major: The description is too short (7 words). - Major: Says nothing about when to use it, or when not to. - Minor: String arguments with no constraint or example: game, variant. - Minor: Says nothing about what it returns. - Minor: No constraints, side effects, auth or rate limits described, and no annotations. - `game_deck_deal`: 26 / 100 - Major: Says nothing about when to use it, or when not to. - Minor: Arguments without a description: cards[].name, cards[].quantity. - Minor: String arguments with no constraint or example: cards[].name. - Minor: Says nothing about what it returns. - Minor: No constraints, side effects, auth or rate limits described, and no annotations. - `nukes_setup_generator`: 26 / 100 - Major: The description only restates the name (9 words). - Major: Says nothing about when to use it, or when not to. - Minor: No `required` list, so every argument is optional. - Minor: Says nothing about what it returns. - Minor: No constraints, side effects, auth or rate limits described, and no annotations. - `rules_random`: 26 / 100 - Major: The description only restates the name (8 words). - Major: Says nothing about when to use it, or when not to. - Minor: No `required` list, so every argument is optional. - Minor: Says nothing about what it returns. - Minor: No constraints, side effects, auth or rate limits described, and no annotations. - `ti4_draw_agendas`: 26 / 100 - Major: The description only restates the name (8 words). - Major: Says nothing about when to use it, or when not to. - Minor: No `required` list, so every argument is optional. - Minor: The description mentions none of its 3 or more arguments. - Minor: Says nothing about what it returns. - Minor: No constraints, side effects, auth or rate limits described, and no annotations. - `ti4_draw_objectives`: 26 / 100 - Major: The description only restates the name (6 words). - Major: The description is too short (6 words). - Major: Says nothing about when to use it, or when not to. - Minor: No `required` list, so every argument is optional. - Minor: The description mentions none of its 3 or more arguments. - Minor: Says nothing about what it returns. - Minor: No constraints, side effects, auth or rate limits described, and no annotations. - `rpg_browse_category`: 27 / 100 - Major: The description only restates the name (6 words). - Major: The description is too short (6 words). - Major: Says nothing about when to use it, or when not to. - Minor: String arguments with no constraint or example: system, game. - Minor: Says nothing about what it returns. - `chess_render_svg`: 28 / 100 - Major: Says nothing about when to use it, or when not to. - Minor: Arguments without a description: variant. - Minor: String arguments with no constraint or example: variant, fen. - Minor: No `required` list, so every argument is optional. - Minor: The description mentions none of its 3 or more arguments. - Minor: Says nothing about what it returns. - Minor: The description says the tool is deprecated. Name the replacement, and consider taking the tool out of tools/list: models avoid it when asked for what it does. - `oracle_roll`: 28 / 100 - Major: Says nothing about when to use it, or when not to. - Minor: Says nothing about what it returns. - Minor: No constraints, side effects, auth or rate limits described, and no annotations. - `team_split`: 28 / 100 - Major: The description is too short (5 words). - Major: Says nothing about when to use it, or when not to. - Minor: Says nothing about what it returns. - Minor: No constraints, side effects, auth or rate limits described, and no annotations. - `tile_gallery_search`: 28 / 100 - Major: Says nothing about when to use it, or when not to. - Minor: No `required` list, so every argument is optional. - Minor: Says nothing about what it returns. - Minor: No constraints, side effects, auth or rate limits described, and no annotations. - `colony_dice_odds`: 29 / 100 - Major: The description only restates the name (9 words). - Major: Says nothing about when to use it, or when not to. - Minor: Says nothing about what it returns. - Minor: No constraints, side effects, auth or rate limits described, and no annotations. - `rpg_random_encounter`: 30 / 100 - Major: Says nothing about when to use it, or when not to. - Minor: No `required` list, so every argument is optional. - Minor: Says nothing about what it returns. - Minor: No constraints, side effects, auth or rate limits described, and no annotations. - `game_deck_list_types`: 31 / 100 - Major: The description only restates the name (7 words). - Major: The description is too short (7 words). - Major: Says nothing about when to use it, or when not to. - Minor: Says nothing about what it returns. - Minor: No constraints, side effects, auth or rate limits described, and no annotations. - `game_score_tracker`: 31 / 100 - Major: The description is too short (7 words). - Major: Says nothing about when to use it, or when not to. - Minor: String arguments with no constraint or example: game. - Minor: Says nothing about what it returns. - Minor: No constraints, side effects, auth or rate limits described, and no annotations. - `hex_generate_map`: 31 / 100 - Major: Says nothing about when to use it, or when not to. - Minor: Says nothing about what it returns. - Minor: No constraints, side effects, auth or rate limits described, and no annotations. - `hex_get_info`: 31 / 100 - Major: Says nothing about when to use it, or when not to. - Minor: The description mentions none of its 3 or more arguments. - Minor: Says nothing about what it returns. - Minor: No constraints, side effects, auth or rate limits described, and no annotations. - `jam_timer`: 31 / 100 - Major: The description only restates the name (8 words). - Major: Says nothing about when to use it, or when not to. - Minor: Says nothing about what it returns. - Minor: No constraints, side effects, auth or rate limits described, and no annotations. - `jam_vote`: 31 / 100 - Major: The description only restates the name (8 words). - Major: Says nothing about when to use it, or when not to. - Minor: Says nothing about what it returns. - Minor: No constraints, side effects, auth or rate limits described, and no annotations. - `piece_gallery_get_set`: 31 / 100 - Major: Says nothing about when to use it, or when not to. - Minor: Says nothing about what it returns. - Minor: No constraints, side effects, auth or rate limits described, and no annotations. - `rpg_get_entity`: 31 / 100 - Major: Says nothing about when to use it, or when not to. - Minor: String arguments with no constraint or example: name, system, game. - Minor: Says nothing about what it returns. - Minor: No constraints, side effects, auth or rate limits described, and no annotations. - `rpg_search_entities`: 31 / 100 - Major: Says nothing about when to use it, or when not to. - Minor: String arguments with no constraint or example: query, game. - Minor: The description mentions none of its 3 or more arguments. - Minor: Says nothing about what it returns. - Minor: No constraints, side effects, auth or rate limits described, and no annotations. - `ti4_draft_factions`: 31 / 100 - Major: The description only restates the name (8 words). - Major: Says nothing about when to use it, or when not to. - Minor: No `required` list, so every argument is optional. - Minor: The description mentions none of its 3 or more arguments. - Minor: Says nothing about what it returns. - Minor: No constraints, side effects, auth or rate limits described, and no annotations. - `tile_gallery_get`: 31 / 100 - Major: Says nothing about when to use it, or when not to. - Minor: Says nothing about what it returns. - Minor: No constraints, side effects, auth or rate limits described, and no annotations. - `coin_flip`: 32 / 100 - Major: Says nothing about when to use it, or when not to. - Minor: No `required` list, so every argument is optional. - Minor: Says nothing about what it returns. - Minor: No constraints, side effects, auth or rate limits described, and no annotations. - `oracle_list_recipes`: 32 / 100 - Major: Says nothing about when to use it, or when not to. - Minor: No `required` list, so every argument is optional. - Minor: Says nothing about what it returns. - Minor: No constraints, side effects, auth or rate limits described, and no annotations. - `oracle_table_view`: 32 / 100 - Major: Says nothing about when to use it, or when not to. - Minor: Says nothing about what it returns. - Minor: No constraints, side effects, auth or rate limits described, and no annotations. - `rpg_list_categories`: 32 / 100 - Major: Says nothing about when to use it, or when not to. - Minor: String arguments with no constraint or example: system. - Minor: No `required` list, so every argument is optional. - Minor: Says nothing about what it returns. - Minor: No constraints, side effects, auth or rate limits described, and no annotations. - `timer_suggest`: 32 / 100 - Major: Says nothing about when to use it, or when not to. - Minor: String arguments with no constraint or example: game. - Minor: Says nothing about what it returns. - Minor: No constraints, side effects, auth or rate limits described, and no annotations. - `board_gallery_search`: 33 / 100 - Major: Says nothing about when to use it, or when not to. - Minor: No `required` list, so every argument is optional. - Minor: Says nothing about what it returns. - Minor: No constraints, side effects, auth or rate limits described, and no annotations. - `game_deck_create`: 33 / 100 - Major: Says nothing about when to use it, or when not to. - Minor: No `required` list, so every argument is optional. - Minor: Says nothing about what it returns. - Minor: No constraints, side effects, auth or rate limits described, and no annotations. - `game_jam_theme`: 33 / 100 - Major: Says nothing about when to use it, or when not to. - Minor: No `required` list, so every argument is optional. - Minor: Says nothing about what it returns. - Minor: No constraints, side effects, auth or rate limits described, and no annotations. - `oracle_ask`: 33 / 100 - Major: Says nothing about when to use it, or when not to. - Minor: String arguments with no constraint or example: question. - Minor: Says nothing about what it returns. - Minor: No constraints, side effects, auth or rate limits described, and no annotations. - `random_player_order`: 33 / 100 - Major: Says nothing about when to use it, or when not to. - Minor: Says nothing about what it returns. - Minor: No constraints, side effects, auth or rate limits described, and no annotations. - `oracle_encounter`: 34 / 100 - Major: Says nothing about when to use it, or when not to. - Minor: No `required` list, so every argument is optional. - Minor: Says nothing about what it returns. - Minor: No constraints, side effects, auth or rate limits described, and no annotations. - `play_load_fen`: 35 / 100 - Major: Says nothing about when to use it, or when not to. - Minor: Says nothing about what it returns. - Minor: No constraints, side effects, auth or rate limits described, and no annotations. - `rpg_chargen`: 35 / 100 - Major: Says nothing about when to use it, or when not to. - Minor: Says nothing about what it returns. - Minor: No constraints, side effects, auth or rate limits described, and no annotations. - `rpg_random`: 35 / 100 - Major: Says nothing about when to use it, or when not to. - Minor: String arguments with no constraint or example: game, system. - Minor: Says nothing about what it returns. - Minor: No constraints, side effects, auth or rate limits described, and no annotations. - `piece_gallery_search`: 36 / 100 - Major: Says nothing about when to use it, or when not to. - Minor: The description mentions none of its 3 or more arguments. - Minor: Says nothing about what it returns. - Minor: No constraints, side effects, auth or rate limits described, and no annotations. - `oracle_scene`: 37 / 100 - Major: Says nothing about when to use it, or when not to. - Minor: No `required` list, so every argument is optional. - Minor: Says nothing about what it returns. - Minor: No constraints, side effects, auth or rate limits described, and no annotations. - `play_render_board`: 37 / 100 - Major: Says nothing about when to use it, or when not to. - Minor: Arguments without a description: highlights[].key, highlights[].color. - Minor: String arguments with no constraint or example: highlights[].color. - Minor: The description mentions none of its 3 or more arguments. - Minor: Says nothing about what it returns. - Minor: No constraints, side effects, auth or rate limits described, and no annotations. - `talisman_draw_characters`: 37 / 100 - Major: Says nothing about when to use it, or when not to. - Minor: No `required` list, so every argument is optional. - Minor: Says nothing about what it returns. - Minor: No constraints, side effects, auth or rate limits described, and no annotations. - `talisman_draw_encounter`: 37 / 100 - Major: Says nothing about when to use it, or when not to. - Minor: No `required` list, so every argument is optional. - Minor: Says nothing about what it returns. - Minor: No constraints, side effects, auth or rate limits described, and no annotations. - `board_gallery_stats`: 38 / 100 - Major: Says nothing about when to use it, or when not to. - Minor: Says nothing about what it returns. - Minor: No constraints, side effects, auth or rate limits described, and no annotations. - `hex_list_games`: 38 / 100 - Major: Says nothing about when to use it, or when not to. - Minor: Says nothing about what it returns. - Minor: No constraints, side effects, auth or rate limits described, and no annotations. - `jam_status`: 38 / 100 - Major: Says nothing about when to use it, or when not to. - Minor: Says nothing about what it returns. - Minor: No constraints, side effects, auth or rate limits described, and no annotations. - `ti4_list_factions`: 38 / 100 - Major: Says nothing about when to use it, or when not to. - Minor: No `required` list, so every argument is optional. - Minor: Says nothing about what it returns. - Minor: No constraints, side effects, auth or rate limits described, and no annotations. - `tile_gallery_stats`: 38 / 100 - Major: The description is too short (6 words). - Major: Says nothing about when to use it, or when not to. - Minor: Says nothing about what it returns. - Minor: No constraints, side effects, auth or rate limits described, and no annotations. - `dice_roll`: 39 / 100 - Major: Says nothing about when to use it, or when not to. - Minor: String arguments with no constraint or example: expression. - Minor: No `required` list, so every argument is optional. - Minor: Says nothing about what it returns. - Minor: No constraints, side effects, auth or rate limits described, and no annotations. - `rules_list_games`: 39 / 100 - Major: Says nothing about when to use it, or when not to. - Minor: No `required` list, so every argument is optional. - Minor: Says nothing about what it returns. - Minor: No constraints, side effects, auth or rate limits described, and no annotations. - `rules_search`: 39 / 100 - Major: Says nothing about when to use it, or when not to. - Minor: String arguments with no constraint or example: query. - Minor: The description mentions none of its 3 or more arguments. - Minor: No constraints, side effects, auth or rate limits described, and no annotations. - `play_check_status`: 40 / 100 - Major: Says nothing about when to use it, or when not to. - Minor: Says nothing about what it returns. - Minor: No constraints, side effects, auth or rate limits described, and no annotations. - `play_suggest_move`: 40 / 100 - Major: Says nothing about when to use it, or when not to. - Minor: Says nothing about what it returns. - Minor: No constraints, side effects, auth or rate limits described, and no annotations. - `rules_get_game_meta`: 40 / 100 - Major: Says nothing about when to use it, or when not to. - Minor: Says nothing about what it returns. - Minor: No constraints, side effects, auth or rate limits described, and no annotations. - `rules_get_variant_list`: 40 / 100 - Major: Says nothing about when to use it, or when not to. - Minor: Says nothing about what it returns. - Minor: No constraints, side effects, auth or rate limits described, and no annotations. - `ti4_random_factions`: 41 / 100 - Major: Says nothing about when to use it, or when not to. - Minor: Says nothing about what it returns. - Minor: No constraints, side effects, auth or rate limits described, and no annotations. - `chess_generate_puzzle`: 42 / 100 - Major: Says nothing about when to use it, or when not to. - Minor: No `required` list, so every argument is optional. - Minor: Says nothing about what it returns. - Minor: No constraints, side effects, auth or rate limits described, and no annotations. - `chess_list_puzzle_types`: 42 / 100 - Major: Says nothing about when to use it, or when not to. - Minor: Says nothing about what it returns. - Minor: No constraints, side effects, auth or rate limits described, and no annotations. - `dice_odds`: 42 / 100 - Major: Says nothing about when to use it, or when not to. - Minor: Says nothing about what it returns. - Minor: No constraints, side effects, auth or rate limits described, and no annotations. - `oracle_list_games`: 42 / 100 - Major: Says nothing about when to use it, or when not to. - Minor: Says nothing about what it returns. - Minor: No constraints, side effects, auth or rate limits described, and no annotations. - `play_export_fen`: 43 / 100 - Major: Says nothing about when to use it, or when not to. - Minor: Says nothing about what it returns. - Minor: No constraints, side effects, auth or rate limits described, and no annotations. - `play_list_variants`: 43 / 100 - Major: Says nothing about when to use it, or when not to. - Minor: Says nothing about what it returns. - Minor: No constraints, side effects, auth or rate limits described, and no annotations. - `piece_gallery_stats`: 45 / 100 - Major: Says nothing about when to use it, or when not to. - Minor: Says nothing about what it returns. - `play_get_definition`: 45 / 100 - Major: Says nothing about when to use it, or when not to. - Minor: No constraints, side effects, auth or rate limits described, and no annotations. - `play_get_moves`: 45 / 100 - Minor: Says nothing about what it returns. - Minor: No constraints, side effects, auth or rate limits described, and no annotations. - `play_list_families`: 45 / 100 - Major: Says nothing about when to use it, or when not to. - Minor: Says nothing about what it returns. - Minor: No constraints, side effects, auth or rate limits described, and no annotations. - `rules_get_page`: 45 / 100 - Major: Says nothing about when to use it, or when not to. - Minor: Says nothing about what it returns. - Minor: No constraints, side effects, auth or rate limits described, and no annotations. - `oracle_interpret`: 47 / 100 - Major: Says nothing about when to use it, or when not to. - Minor: No constraints, side effects, auth or rate limits described, and no annotations. - `play_validate_move`: 47 / 100 - Major: Says nothing about when to use it, or when not to. - Minor: No constraints, side effects, auth or rate limits described, and no annotations. - `rules_get_diagram`: 47 / 100 - Major: Says nothing about when to use it, or when not to. - Minor: No constraints, side effects, auth or rate limits described, and no annotations. - `rules_get_game`: 50 / 100 - Minor: Says nothing about what it returns. - Minor: No constraints, side effects, auth or rate limits described, and no annotations. - `play_create_game`: 55 / 100 - Major: Says nothing about when to use it, or when not to. - Minor: No constraints, side effects, auth or rate limits described, and no annotations. - `play_make_moves`: 55 / 100 - Minor: No constraints, side effects, auth or rate limits described, and no annotations. - `play_apply_move`: 60 / 100 - Major: Says nothing about when to use it, or when not to. - Minor: No constraints, side effects, auth or rate limits described, and no annotations. 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