MCPInstall

mlb-data

by machina-sportsBackend & APIs

MLB data via ESPN public endpoints and the official MLB Stats API — scores, standings, rosters, schedules, game summaries, injuries, leaders, and news, plus an analytics backend: pitch-level velocity/spin/exit-velocity, career splits by stat group, league leaders, and schedules to 1901. Zero config, no API keys. Use when: user asks about MLB scores, standings, team rosters, schedules, game stats, box scores, play-by-play, injuries, transactions, depth charts, team/player statistics, MLB news, pitch speeds/spin/exit velocity, career stats, league leaders, or historical MLB seasons. Don't use when: user asks about minor league baseball, college baseball, or international baseball. For other sports use: nfl-data (NFL), nba-data (NBA), wnba-data (WNBA), nhl-data (NHL), football-data (soccer), tennis-data (tennis), golf-data (golf), cricket-data (cricket), cfb-data (college football), cbb-data (college basketball), fastf1 (F1). For betting odds use polymarket or kalshi. For news use sports-

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Install

Works with every agent the skills CLI supports.

npx skills add https://github.com/machina-sports/sports-skills --skill mlb-data
  1. 01

    Install

    Run the command in your project. The CLI asks which agents to install for.

  2. 02

    Describe the task

    Ask your agent for something this skill covers. It loads mlb-data automatically when relevant.

  3. 03

    Review the result

    The agent follows the SKILL.md steps, scripts and references bundled with the skill.

SKILL.md

The instructions your agent reads when the skill is triggered.

MLB Data

Before writing queries, consult references/api-reference.md for endpoints, ID conventions, and data shapes.

Setup

Before first use, check if the CLI is available:

which sports-skills || pip install sports-skills

If pip install fails with a Python version error, the package requires Python 3.10+. Find a compatible Python:

python3 --version  # check version
# If < 3.10, try: python3.12 -m pip install sports-skills
# On macOS with Homebrew: /opt/homebrew/bin/python3.12 -m pip install sports-skills

No API keys required.

Quick Start

Prefer the CLI — it avoids Python import path issues:

sports-skills mlb get_scoreboard
sports-skills mlb get_standings --season=2025
sports-skills mlb get_teams

CRITICAL: Before Any Query

CRITICAL: Before calling any data endpoint, verify:

  • Season year is derived from the system prompt's currentDate — never hardcoded.
  • If only a team name is provided, call get_teams to resolve the team ID before using team-specific commands.

Choosing the Season

Derive the active season from the system prompt's date — not just the calendar year.

  • If the user specifies a season, use it as-is.
  • If the user says "current", "this season", or doesn't specify: The MLB season runs late March/April through October. If the current month is January–March, the last completed season was the prior calendar year. From April onward, use the current calendar year.

Commands

CommandDescription
get_scoreboardLive/recent MLB scores
get_standingsStandings by league and division
get_teamsAll 30 MLB teams
get_team_rosterFull roster for a team
get_team_scheduleSchedule for a specific team
get_game_summaryDetailed box score and scoring plays
get_leadersMLB statistical leaders
get_newsMLB news articles
get_play_by_playFull play-by-play for a game
get_win_probabilityWin probability chart data
get_scheduleGames on a specific date (no season filter; see get_team_schedule)
get_injuriesInjury reports across all teams
get_transactionsRecent transactions
get_futuresFutures/odds markets
get_depth_chartDepth chart for a team
get_team_statsTeam statistical profile
get_player_statsPlayer statistical profile
find_mlb_playerSearch MLB's player registry by name
get_mlbstats_scheduleGames via the MLB Stats API — history to 1901, carries gamePk ids
get_mlbstats_player_statsSeason/career/year-by-year splits by stat group via MLB Stats API; stat_type=game_log gives one split per game
get_mlbstats_play_by_playPitch-level PBP — velocity, spin, plate coords, exit velo, launch angle
get_mlbstats_boxscoreFull box score with per-player batting/pitching via MLB Stats API
get_mlbstats_standingsStandings by division via MLB Stats API
get_mlbstats_leadersLeague leaders for any stat category via MLB Stats API

See references/api-reference.md for full parameter lists and return shapes.

Shaping Play-by-Play Results

get_mlbstats_play_by_play and get_mlbstats_player_stats accept sort_by, descending, limit and fields. fields is the quickest way to drop the per-pitch lists when you only need the at-bat outcomes:

sports-skills mlb get_mlbstats_play_by_play --game_pk=775296 --fields=event,rbi
  • sort_by: one column to sort by. Numbers (and numeric strings) sort numerically; missing values always go last.
  • descending: true (default) or false; only used with sort_by.
  • limit: positive integer, applied after sorting.
  • fields: comma-separated keep-list. inning, half, batter, pitcher (play-by-play) or season, team, game_pk, game_date (player stats; stat keys such as homeRuns are addressable directly) and the sort_by column are always kept.
  • An unknown sort_by/fields column returns an error listing the valid columns.
  • With any of these set, the response adds total_rows (matching rows before limit) and returned_rows. With none set, output is unchanged. They are applied after the fetch, so they never change the upstream request or its replay entry.

Using ESPN and the MLB Stats API Together

The get_mlbstats_* commands read statsapi.mlb.com — MLB's own open API. It carries the analytics layer ESPN does not: per-pitch velocity/spin/location, exit velocity and launch angle on balls in play, career splits by stat group, and schedules back to 1901. The two sources use unrelated id systems:

  • Game ids. MLB uses gamePk (e.g. 775296); ESPN uses event ids (e.g. 401570367). No shared column — join on the game date plus teams.
  • Team abbreviations. Two teams differ: ESPN ARI/CHW vs MLB AZ/CWS. Every get_mlbstats_* team filter accepts either spelling, and rows carry both (team_abbreviation, team_abbreviation_espn).
  • Player ids. MLB person ids (660271) and ESPN athlete ids are unrelated. Resolve names with find_mlb_player; ASCII spellings match accented names ("acuna" finds "Ronald Acuña Jr.").
  • Postponed games repeat. A postponed or suspended game is listed twice under one game_pk in get_mlbstats_schedule: the original date has rescheduled: true (and rescheduled_to), the make-up has rescheduled_from. Drop rescheduled rows when counting games.
  • Schedule times. start_time is UTC; venue_timezone is the ballpark's IANA zone (e.g. America/New_York, null if MLB omits it) and local_date is MLB's official (local) date.
  • Postseason game_type filters by date. game_type="worldseries" with a date outside the World Series returns no games plus a warnings entry; drop game_type, or pass team + season with it to list the round's dates.
  • Leaders come grouped. A category like homeRuns exists for hitting, catching, and pitching (home runs allowed); rows are labelled with stat_group — pass stat_group= to get just one.

Responses include MLB's copyright notice, passed through from the API.

Examples

Example 1: Today's scores User says: "What are today's MLB scores?" Actions:

  1. Call get_scoreboard() Result: All live and recent MLB games with scores by inning and status

Example 2: Division standings User says: "Show me the AL East standings" Actions:

  1. Derive season year from currentDate
  2. Call get_standings(season=<derived_year>)
  3. Filter results for American League East Result: AL East standings with W-L, PCT, GB, run differential

Example 3: Team roster User says: "Who's on the Yankees roster?" Actions:

  1. Call get_team_roster(team_id="10") Result: Full Yankees roster with name, position, bats/throws, height, weight

Example 4: Game box score User says: "Show me the full box score for last night's Dodgers game" Actions:

  1. Call get_scoreboard(date="<yesterday>") to find the event_id
  2. Call get_game_summary(event_id=<id>) for full box score Result: Complete box score with batting/pitching stats per player

Example 5: Injury report User says: "Who's on the IL for the Yankees?" Actions:

  1. Call get_injuries()
  2. Filter results for New York Yankees (team_id=10) Result: Yankees IL list with player name, position, IL type, and injury detail

Example 6: Player statistics User says: "Show me Shohei Ohtani's stats" Actions:

  1. Derive season year from currentDate
  2. Call get_player_stats(player_id="39832", season_year=<derived_year>) Result: Season stats by category (batting, pitching) with value, rank, and per-game averages

Example 7: World Series odds User says: "Who's favored to win the World Series?" Actions:

  1. Call get_futures(limit=10) Result: Top World Series contenders with odds values

Commands that DO NOT exist — never call these

  • get_odds / get_betting_odds — not available. For prediction market odds, use the polymarket or kalshi skill.
  • search_teams — does not exist. Use get_teams instead.
  • get_box_score — does not exist. Use get_game_summary instead.
  • get_player_ratings — does not exist. Use get_player_stats instead.

If a command is not listed in the Commands table above, it does not exist.

Error Handling

When a command fails, do not surface raw errors to the user. Instead:

  1. Catch silently and try alternatives
  2. If team name given instead of ID, use get_teams to find the ID first
  3. Only report failure with a clean message after exhausting alternatives

Troubleshooting

Error: sports-skills command not found Cause: Package not installed Solution: Run pip install sports-skills

Error: Team not found by ID Cause: Wrong or outdated ESPN team ID used Solution: Call get_teams to get the current list of all 30 MLB teams with their IDs

Error: No data returned for a future game Cause: ESPN only returns data for completed or in-progress games Solution: Use get_schedule to see upcoming game details; get_scoreboard only covers active/recent games

Error: Offseason — scoreboard returns 0 events Cause: No games scheduled during the offseason (November–March) Solution: Use get_standings or get_news instead; MLB offseason transactions are available via get_transactions

FAQ

What does the mlb-data skill do?

MLB data via ESPN public endpoints and the official MLB Stats API — scores, standings, rosters, schedules, game summaries, injuries, leaders, and news, plus an analytics backend: pitch-level velocity/spin/exit-velocity, career splits by stat group, league leaders, and schedules to 1901. Zero config, no API keys. Use when: user asks about MLB scores, standings, team rosters, schedules, game stats, box scores, play-by-play, injuries, transactions, depth charts, team/player statistics, MLB news, pitch speeds/spin/exit velocity, career stats, league leaders, or historical MLB seasons. Don't use when: user asks about minor league baseball, college baseball, or international baseball. For other sports use: nfl-data (NFL), nba-data (NBA), wnba-data (WNBA), nhl-data (NHL), football-data (soccer), tennis-data (tennis), golf-data (golf), cricket-data (cricket), cfb-data (college football), cbb-data (college basketball), fastf1 (F1). For betting odds use polymarket or kalshi. For news use sports-

How do I install mlb-data?

Run npx skills add https://github.com/machina-sports/sports-skills --skill mlb-data in your project. The skills CLI detects the agents you use and copies the skill into the right folder. For Claude Code you can also place the skill folder at ~/.claude/skills/mlb-data/ (personal) or .claude/skills/mlb-data/ (project).

Which AI agents can use mlb-data?

Any agent that supports the open Agent Skills format (a folder with a SKILL.md file), including Claude Code, Codex, Cursor, GitHub Copilot, Gemini CLI, Windsurf, Cline, OpenCode and more.

Is mlb-data safe to install?

No partner security audit is available yet. Skills can run commands and scripts, so read the SKILL.md and any bundled files before installing.

Who maintains mlb-data?

It is published by machina-sports in machina-sports/sports-skills. It has 742 recorded installs.

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