Two tools with basic schemas and minimal descriptions. Tool naming follows verb_noun convention (get_*, positive). Input schemas present but lack parameter descriptions entirely. Output schemas undocumented. No error guidance, no pagination support despite list-like tool. Parameters have types but descriptions are sparse or missing per-parameter. This is a typical community STDIO server scoring in the D range.

• Add per-parameter descriptions in inputSchema: 'count' → 'Number of match IDs to retrieve (integer 1-100, default 20)', 'start' → 'Offset into match history for pagination (integer ≥0, default 0)', 'matchId' → 'TFT match identifier string returned by tft_match_history'
• Document output schema in tool descriptions. E.g., tft_match_history returns '{matchIds: [string, ...], total_count?: number}'. tft_match_details returns '{metadata: {...}, participants: [{...}], ...}' (actual structure from Riot API docs).
• Enhance tft_match_history description: 'Retrieve up to 100 recent match IDs for the configured summoner account. Use with tft_match_details to fetch full match data. Pagination: use start and count to iterate large histories. Returns array of match ID strings and optional total count.'
• Add recovery guidance to error handling: When Riot API returns 429 (rate limit), respond with 'Rate limited by Riot API. Retry in 60 seconds.' When 404 (match not found), respond with 'Match ID not found or player account not initialized. Verify gameName, tagLine, and apiKey are correct.'
• Document matchId parameter format and source: 'matchId: string, match identifier returned by tft_match_history, format: region_timestamp_sequence (e.g., NA1_1234567890_00001)'
• Add bounds and defaults to descriptions: 'start: minimum 0 (default 0), count: 1 - 100 (default 20). To fetch all matches, paginate with count=100 and increment start by 100 until fewer than 100 results returned.'
• Clarify in tool descriptions that these tools operate on the 'current player', the summoner account resolved via gameName + tagLine at server startup. Add to tft_match_history: '(Note: operates on the summoner configured at server start via --gameName and --tagLine)'.