Fill My Bracket MCP Server

by fillmybracket Your server? Claim it

answering

Fill My Bracket is answering right now. Last checked 12 min ago. It exposes 4 tools. Last commit 11 Nov 2026.

March Madness bracket help: picks, matchup analysis, and upset guidance for your pool.

Uptime history 6 days of history

6 days agonow

100.0%

Uptime 24h

91 of 91 checks

Tools

read from the server

120 ms

Response time

average over 24h

Stars

last commit 11 Nov 2026

What changed 3

Every tool that appeared, vanished or quietly changed what it asks for. Recorded since 10 November 2026. No other catalogue keeps this.

10 Nov 2 tool descriptions were rewritten get_cinderella_radar, get_rankings

10 Nov a tool changed the parameters it asks for get_backtest

Nothing serious here today

Today is the operative word: we check Fill My Bracket every 15 minutes and re-read its code on every release. Watch it and you find out the day that stops being true.

Connect this server

Endpoint below is the one we actually reach during checks — not the one copied from a README. Last verified 12 min ago.

Claude Code Claude Desktop Codex Cursor VS Code

run in your terminal

claude mcp add fill-my-bracket --transport http https://mcp.fillmybracket.com/mcp

Settings → Connectors → Add custom connector, then paste this address

https://mcp.fillmybracket.com/mcp

~/.codex/config.toml

[mcp_servers.fill-my-bracket]
url = "https://mcp.fillmybracket.com/mcp"

.cursor/mcp.json

{
  "mcpServers": {
    "fill-my-bracket": {
      "url": "https://mcp.fillmybracket.com/mcp"
    }
  }
}

.vscode/mcp.json

{
  "servers": {
    "fill-my-bracket": {
      "type": "http",
      "url": "https://mcp.fillmybracket.com/mcp"
    }
  }
}

Available tools 4

Read directly from the server with tools/list, grouped by what they act on. If a tool disappears, we record the date.

backtest

get_backtest

For a past men's tournament (2016-2026; no tournament was played in 2020), returns the winning recipes: the site's own five-question engine was run over that year's REAL field (real teams, real seeds) across 108 answer combinations, and every bracket was scored against what actually happened under standard pool scoring (1-2-4-8-16-32, max 192). With no style inputs, returns the year's real champion and Final Four, the best total score and the recipe that earned it, the best first-weekend score, how many recipes ended with the real champion, and how many reproduced the full Final Four (in most years, none did). With style inputs (chaos, tiebreak, champion_pick, loyalty), scores that exact recipe instead. Counted history, not a prediction: a recipe is what WOULD have scored in a finished tournament, and the result says so. No odds, no betting advice.

cinderella

get_cinderella_radar

Returns Fill My Bracket's Cinderella radar, as of Monday, November 9, 2026, exactly as published on the site's rankings page: the unranked teams the model rates far above their poll votes (each with its league, AP votes, model rank, and a plain why line), the Cinderella watch list, and the ranked teams flagged as vulnerable favorites on their projected seed lines, each with that line's counted first-round record from 1985-2026. These are November signals from the Week 1 poll and one model, stated as the site states them: not predictions, not odds, and no guarantee any of these teams makes the 2027 field, which is set on Selection Sunday, March 14, 2027.

rankings

get_rankings

Returns the current college basketball rankings exactly as published on fillmybracket.com/college-basketball-rankings: the AP Top 25, Week 1 (released Monday, November 9, 2026, with first-place votes), the other teams receiving votes, and the Bart Torvik T-Rank model ranks (read November 1, 2026). Rankings as of Monday, November 9, 2026, and every result says so. With no argument, returns the full Top 25 plus the model's own top 10, so the poll-vs-model gaps are visible. With a team name, returns that team's AP rank or votes, its model rank, and any radar or vulnerable-favorite note the site carries for it. A team outside the published data gets a plain not-found: nothing is invented. Real teams and real ranks only; this is current-season data, not the 2027 tournament field, which is set on Selection Sunday, March 14, 2027.

upset

get_upset_counts

Answers upset questions from the men's tournament counted game by game, 1985-2026 (41 tournaments, 2,583 games): how often a seed line wins its first-round game (stated as wins in 164 games), how many first-round upsets a typical year has, and how far a seed has gone. Ask with a matchup ('12 vs 5'), a seed, or no argument for the whole table. These are counted historical facts, not odds, not win probabilities for any future game, and not betting advice. The dataset is men's only and covers the main bracket from the round of 64 (no First Four games).

Endpoints

URL	Transport	State	Latency	Checked
https://mcp.fillmybracket.com/mcp	streamable-http	answering	138 ms	12 min ago

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Fill My Bracket — questions

Answers built from our own checks of this server.

What can Fill My Bracket do?

It exposes 4 tools, read directly from the server on our last check. Among them: get_backtest, get_cinderella_radar, get_rankings, get_upset_counts. The full list with descriptions is on this page — we take it from the server itself via tools/list, not from a README. How MCP servers expose tools in the first place →

Is Fill My Bracket working right now?

We send a real MCP handshake every 15 minutes. Over the last 24 hours 91 of 91 checks got a reply (100.0%), average response time 120 ms. The bar chart above shows every period we have measured.

How do I connect Fill My Bracket?

Copy the ready config from this page. We generate it for Claude Code, Claude Desktop, Codex, Cursor and VS Code, each in the form that client actually reads. It is a remote server, so there is nothing to install — the client connects to the address.

Does Fill My Bracket need an API key?

No. Fill My Bracket completed a full MCP handshake with us as an anonymous client and listed its tools without asking for anything. All 4 of them are readable on this page. This is what we observed, not what the docs claim.

How fast is Fill My Bracket?

It answers our handshake in 120 ms on average, which is faster than 90% of all working MCP servers we measure. That puts it in the quick quarter of the ecosystem. The comparison comes from our own checks across the whole registry, every 15 minutes.

Is Fill My Bracket open source?

We cannot say either way: written in HTML and 0 stars on GitHub, but we could not determine the licence, and without one the code is not open source by default.