DraftCall MCP Server (io.draftcall/fantasy-football)

DraftCall provides NFL fantasy football data for the 2026 season via the Model Context Protocol. It supports questions that compare options such as “should I start X or Y,” including rankings, byes, matchups, schedule strength, and checks.

🛠️ Key Features

NFL fantasy football comparisons: rankings, byes, matchups
Schedule strength and start/sit “checks”
Model Context Protocol server: io.draftcall/fantasy-football
7 tools exposed by the server

🚀 Use Cases

Start/sit decisions in NFL fantasy matchups
Querying schedules by strength and team/player context
Comparing two or more players (e.g., “should I start Bijan Robin…”)

⚡ Developer Benefits

MCP-compatible endpoint for assistants: https://draftcall.io/mcp
Streamable HTTP transport
Stateless operation
No authentication required (free, read-only)

⚠️ Limitations

No auth and no account; access is read-only
Service scope is limited to NFL fantasy football for the 2026 season

DraftCall MCP Server

License: MIT MCP Registry

NFL fantasy football data for the 2026 season, over the Model Context Protocol.

Endpoint: https://draftcall.io/mcp Transport: streamable HTTP, stateless Auth: none. Free, read-only, no API key, no account. Docs: https://draftcall.io/mcp-server/

Ask an MCP-connected assistant "should I start Bijan Robinson or Jahmyr Gibbs in PPR" and it can answer from live data instead of guessing. Every tool result carries the draftcall.io URL the numbers came from, so answers stay citable.

Connect

Any client that accepts a remote MCP endpoint. No install, no clone.

Claude Code

code

claude mcp add --transport http draftcall https://draftcall.io/mcp

Claude Desktop, or any client that takes a JSON config

json

{
  "mcpServers": {
    "draftcall": {
      "type": "streamable-http",
      "url": "https://draftcall.io/mcp"
    }
  }
}

Clients that only speak stdio

Some clients and registries cannot take a remote URL and require a command they can run locally. For those, this repository ships a stdio bridge: it forwards newline-delimited JSON-RPC to the same hosted endpoint, so the tools, prompts and resources are identical and there is still only one server implementation.

bash

docker build -t draftcall-mcp .
docker run --rm -i draftcall-mcp

Or without Docker, using any Node 18 or newer:

bash

node stdio-proxy.mjs

The bridge has no dependencies and holds no state. Set DRAFTCALL_MCP_URL to point it somewhere other than production. Prefer the remote URL above wherever your client supports it; the bridge is a compatibility shim, not the main path.

Tools

Ten, all read-only. Nothing here can modify a league, a roster, or an account.

Tool	Arguments	What it answers
`compare_players`	`player_a`, `player_b`, `scoring_format`	Head to head: points per game in the requested format, volume stats, bye weeks, who produced more. Start/sit, draft and trade questions about two named players.
`get_rankings`	`position`, `scoring_format`, `limit`	Position rankings for QB, RB, WR, TE, FLEX, K or DEF.
`get_player`	`name`	One player's profile: production, tier, efficiency, bye week.
`search_players`	`query`, `limit`	Find players by partial name, team, or position.
`get_positional_scarcity`	`scoring_format`	How steep the scoring dropoff is at each position, for draft strategy.
`get_bye_conflicts`	`players`	Which bye weeks two or more rostered players share.
`get_weekly_matchup`	`player`, `week`, `scoring_format`	Who a player faces in a given week of the season, home or away, and how generous that opponent has been to the position. In-season start/sit questions that name a week.
`get_strength_of_schedule`	`team` + `position`, or `player`, or `position` alone	How easy or hard a schedule is for one position, over the full season and over fantasy playoff weeks 14 through 17. A position on its own ranks all 32 teams, easiest first.
`get_adp_market_gaps`	`position`, `direction`, `scoring_format`, `limit`	Players whose consensus average draft position disagrees most with their actual production ranking. Taken earlier than production means the room is drafting on expectation; later means it is drafting on doubt. A disagreement, not a recommendation.
`verify_claim`	`player`, `metric`, `value`, `scoring_format`	Check a stated figure (points per game, games played, bye week, rank, or any season stat) against the data. Confirms it, or returns the real number. Call it before quoting a stat from memory.

Prompts and resources

Three prompts, for clients that surface them in a picker or slash menu: start_sit, draft_pick, and bye_planning. Each one names the exact tools to call and the order to call them.

One resource, draftcall://methodology, a single markdown page describing how every derived figure is computed: season basis, scoring formats, tiers, scarcity, opponent difficulty, and strength of schedule.

scoring_format accepts PPR, half-PPR and standard. position accepts QB, RB, WR, TE, FLEX, K and DEF. week accepts 1 through 18.

Data

Player names and statistics are public-domain factual data. Rankings refresh daily. Every figure is labelled inline with the season it describes (2025 regular-season production until the 2026 season accrues a usable sample), and every response carries a stats_season field, so a model cannot mistake a completed season for a projection. DraftCall publishes no projections, ADP, or injury status through this server.

Not affiliated with the NFL or the NFLPA.

About

Built by Pizza Robot Studios LLC, an independent game and app studio in Los Angeles. DraftCall is also an iOS and Android app: https://draftcall.io/download/

This repository registers the hosted server, documents its tools, and carries the stdio bridge for clients that need one. The server itself runs at the endpoint above.

License

The contents of this repository (the registry manifest and these docs) are MIT licensed. See LICENSE and NOTICE.

That covers this repo only. The DraftCall service, the data it returns, and the DraftCall name are not covered: use of the endpoint is governed by https://draftcall.io/terms/, and DraftCall is a trademark of Pizza Robot Studios LLC (USPTO Serial 99762133).

player_a	string	required	First player name, e.g. "Bijan Robinson".
player_b	string	required	Second player name, e.g. "Jahmyr Gibbs".
scoring_format	string	optional	Scoring format. ppr awards 1 point per reception, half_ppr 0.5, standard 0. Defaults to half_ppr, the most common league setting.

position	string	required	Position to rank. flex covers RB, WR, and TE together.
scoring_format	string	optional	Scoring format. ppr awards 1 point per reception, half_ppr 0.5, standard 0. Defaults to half_ppr, the most common league setting.
limit	integer	optional	How many players to return, newest ranking order.

query	string	required	Partial name, team abbreviation (e.g. "KC"), or position.
limit	integer	optional

player	string	required	Player name, e.g. "Puka Nacua".
week	integer	required	Regular-season week, 1 through 18.
scoring_format	string	optional	Scoring format. ppr awards 1 point per reception, half_ppr 0.5, standard 0. Defaults to half_ppr, the most common league setting.

position	string	optional	Restrict to one position. Omit for all four.
direction	string	optional	earlier_than_production: the room drafts him sooner than his production ranks him. later_than_production: the room waits longer. Omit for both.
scoring_format	string	optional	Scoring format. ppr awards 1 point per reception, half_ppr 0.5, standard 0. Defaults to half_ppr, the most common league setting.
limit	integer	optional

DraftCall