MCP server

Muffed — verified NFL stats and fantasy context Official

ai.muffed/muffed

Checked 25 Oct 2026, 20:29 UTC · Connected to it and listed its tools

Verified NFL stats and Sleeper league context. Every figure carries its own source rank.

Website Source

At a glance

Type

MCP server

Publisher

muffed.ai (verified by the MCP Registry)

Status

Working at last check

Tools

15

Token cost

About 4,570 tokens per request

Sets up in

Claude Code, Claude Desktop, Codex, Gemini CLI, Cursor, VS Code, Antigravity, ChatGPT, OpenAI API, Grok

Last checked

25 Oct 2026, 20:29 UTC

Connect it to your agent

Add to CursorAdd to VS CodeVS Code Insiders

Opens the app, which shows the server and asks you to confirm. For other apps, copy the setup below.

Claude Code

claude mcp add --transport http muffed https://muffed.ai/api/mcp

Claude Desktop

Settings → Connectors → Add custom connector, and paste the URL.

Codex (config.toml)

[mcp_servers.muffed]
url = "https://muffed.ai/api/mcp"

Gemini CLI

{"mcpServers":{"muffed":{"httpUrl":"https://muffed.ai/api/mcp"}}}

Cursor

{"mcpServers":{"muffed":{"url":"https://muffed.ai/api/mcp"}}}

VS Code

{"servers":{"muffed":{"type":"http","url":"https://muffed.ai/api/mcp"}}}

Antigravity

agy mcp add muffed https://muffed.ai/api/mcp

ChatGPT

Settings → Apps & Connectors → Advanced settings: turn on Developer mode, then Create a connector and paste the URL. Which plans can do this varies.

OpenAI API (Responses tools)

{"type":"mcp","server_label":"muffed","server_url":"https://muffed.ai/api/mcp","require_approval":"always"}

Grok (xAI API tools)

{"type":"mcp","server_label":"muffed","server_url":"https://muffed.ai/api/mcp"}

Tools

• compare_entities ~263 tokens
  Two players or two teams shown side by side — by default on the metrics that matter for their position, on named metrics when `metrics` is set, and on the full set with all:true. Each side carries its source rank. States both figures and stops: it names no winner, no margin and no recommendation. `m
• get_backfield ~163 tokens
  Muffed's published handcuff page for one team's backfield, plus the current depth chart and injury status from Sleeper. Answers who backs up a starter, and who replaces one who is out.
• get_current_insights ~112 tokens
  Muffed's published editorial reads on what is real in the NFL right now — each one a dated, sourced claim with its supporting figures, from the /trends board.
• get_entity_metrics ~244 tokens
  The verified figures Muffed holds for one NFL player or one NFL team (by name or abbreviation, e.g. "Bijan Robinson" or "DEN"), with the source's rank where one exists. By default the headline figures for that player or team; scope "all" returns every figure held, and a named metric returns all of t
• get_metric_definition ~175 tokens
  Muffed's published definition of a verified metric — what it measures, in plain language, from the glossary page for that term — plus which seasons it actually covers, how it is ranked, its licence and its attribution. Accepts a metric key or a common name ("cpoe", "rushing yards over expected"). Se
• list_metrics ~198 tokens
  What Muffed can answer on. By default a summary of metric families with their counts and season coverage; with search or detail:true, individual metric keys. Returns keys and coverage only, never figures.
• query_stat_leaders ~206 tokens
  Top entities on one verified metric for one season, pre-sorted, each with the source's own rank and the population it was ranked against. Takes a verified panel metric key.
• run_stat_query ~2169 tokens
  Computes an NFL figure from a structured query rather than looking one up: a population (position, qualifying threshold), a window (seasons, weeks, a team span, a coach's tenure), one named measure, and one operation (leaders, rank, count, only-who, a per-season streak, or a share of a total). Answe
• search_metrics ~183 tokens
  The verified metrics that match a topic — e.g. 'screens', 'blitz', 'time to throw' — ranked by a text match over each metric's key, label, common names and board description. Up to 20 entries, each with its key, subject, season coverage and the board it belongs to. Keys and coverage only, never figu
• sleeper_find_leagues ~115 tokens
  Lists the NFL leagues a Sleeper username belongs to, with each league's id. Muffed stores nothing about the requester.
• sleeper_get_league ~95 tokens
  One league's name, season, size, current week, detected scoring format, and the manager-to-roster map.
• sleeper_matchup_preview ~154 tokens
  Both sides of a league matchup, with the verified figures Muffed holds for the players involved and each team's record. Muffed does not project outcomes, name a winner, or recommend a lineup.
• sleeper_roster_stories ~133 tokens
  One team's roster mapped to the verified figures and published Muffed surfaces for each player. Players Muffed does not cover are listed as uncovered rather than omitted.
• sleeper_standings_story ~124 tokens
  League standings derived from Sleeper's roster settings — records, points for, and points against where available. Sleeper publishes no standings endpoint, so these are computed from the roster rows.
• verify_claim ~236 tokens
  Checks structured claims against Muffed's verified panel. Each claim comes back confirmed, wrong (with the actual value), or unverifiable (with the metric's real season coverage). Takes structured fields only, not sentences.

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