Fantasy Football MCP — Draft, Start/Sit, Waivers

This Week's Rankings by the Market

draft_board

Read-only

In season: this week's QB/RB/WR/TE rankings by the median Kalshi prices each player at (pass/rush/rec yds), plus anytime-TD price. Free. (Draft board returns in 2027.)

Input Schema

Name	Required	Description	Default
`limit`	No	Max rows (default 15).
`position`	No	Optional position filter (FLEX = RB/WR/TE). One of: QB · RB · WR · TE · FLEX.

Schema Changelog

Changes observed during successful MCP inspections.

Changed2 schema fields changedOct 23, 2026

removedInput schema / $schema

Removed value: -"https://json-schema.org/draft/2020-12/schema"

changedInput schema / properties / limit / description

Previous value: -"Max rows (default 15). Values above 50 are clamped to 50."New value: +"Max rows (default 15)."

Changed2 schema fields changedOct 15, 2026

removedInput schema / properties / limit / anyOf

Removed value: -[
-  {
-    "anyOf": [
-      {
-        "type": "number"
-      },
-      {
-        "type": "string"
-      }
-    ]
-  },
-  {
-    "type": "null"
-  }
-]

addedInput schema / properties / limit / type

Added value: +[
+  "number",
+  "string",
+  "null"
+]

Changed2 schema fields changedOct 7, 2026

addedInput schema / properties / limit

Added value: +{
+  "anyOf": [
+    {
+      "anyOf": [
+        {
+          "type": "number"
+        },
+        {
+          "type": "string"
+        }
+      ]
+    },
+    {
+      "type": "null"
+    }
+  ],
+  "description": "Max rows (default 15). Values above 50 are clamped to 50."
+}

addedInput schema / properties / position

Added value: +{
+  "anyOf": [
+    {
+      "type": "string"
+    },
+    {
+      "enum": [
+        "QB",
+        "RB",
+        "WR",
+        "TE",
+        "FLEX"
+      ],
+      "type": "string"
+    }
+  ],
+  "description": "Optional position filter (FLEX = RB/WR/TE). One of: QB · RB · WR · TE · FLEX."
+}

Changed5 schema fields changedSep 10, 2026

removedInput schema / properties / limit

Removed value: -{
-  "default": 50,
-  "description": "Max players to return, best first (default 50). The full board is ~330 and all of it is free.",
-  "maximum": 400,
-  "minimum": 1,
-  "type": "integer"
-}

removedInput schema / properties / platform

Removed value: -{
-  "anyOf": [
-    {
-      "type": "string"
-    },
-    {
-      "enum": [
-        "yahoo",
-        "espn",
-        "sleeper",
-        "nfl",
-        "cbs",
-        "fantrax",
-        "draftkings",
-        "underdog"
-      ],
-      "type": "string"
-    }
-  ],
-  "description": "League platform — applies its default scoring, size, roster + best-ball settings (overridable by explicit scoring/teams). Underdog/DraftKings are best ball. One of: yahoo · espn · sleeper · nfl · cbs · fantrax · draftkings · underdog."
-}

removedInput schema / properties / position

Removed value: -{
-  "anyOf": [
-    {
-      "type": "string"
-    },
-    {
-      "enum": [
-        "QB",
-        "RB",
-        "WR",
-        "TE",
-        "FLEX"
-      ],
-      "type": "string"
-    }
-  ],
-  "description": "Optional position filter (FLEX = RB/WR/TE). One of: QB · RB · WR · TE · FLEX."
-}

removedInput schema / properties / scoring

Removed value: -{
-  "anyOf": [
-    {
-      "type": "string"
-    },
-    {
-      "enum": [
-        "standard",
-        "half_ppr",
-        "ppr"
-      ],
-      "type": "string"
-    }
-  ],
-  "description": "Scoring format: standard, half_ppr (default), or ppr (full PPR). Overrides a platform preset. Works for Yahoo/ESPN/Sleeper defaults. One of: standard · half_ppr · ppr."
-}

removedInput schema / properties / teams

Removed value: -{
-  "description": "League size (number of teams) for draft-round math. Overrides the platform default; falls back to 12.",
-  "maximum": 20,
-  "minimum": 4,
-  "type": "integer"
-}

Changed12 schema fields changedSep 4, 2026

addedInput schema / properties / platform / anyOf

Added value: +[
+  {
+    "type": "string"
+  },
+  {
+    "enum": [
+      "yahoo",
+      "espn",
+      "sleeper",
+      "nfl",
+      "cbs",
+      "fantrax",
+      "draftkings",
+      "underdog"
+    ],
+    "type": "string"
+  }
+]

changedInput schema / properties / platform / description

Previous value: -"League platform — applies its default scoring, size, roster + best-ball settings (overridable by explicit scoring/teams). Underdog/DraftKings are best ball."New value: +"League platform — applies its default scoring, size, roster + best-ball settings (overridable by explicit scoring/teams). Underdog/DraftKings are best ball. One of: yahoo · espn · sleeper · nfl · cbs · fantrax · draftkings · underdog."

removedInput schema / properties / platform / enum

Removed value: -[
-  "yahoo",
-  "espn",
-  "sleeper",
-  "nfl",
-  "cbs",
-  "fantrax",
-  "draftkings",
-  "underdog"
-]

removedInput schema / properties / platform / type
```
Removed value: -"string"
```

addedInput schema / properties / position / anyOf

Added value: +[
+  {
+    "type": "string"
+  },
+  {
+    "enum": [
+      "QB",
+      "RB",
+      "WR",
+      "TE",
+      "FLEX"
+    ],
+    "type": "string"
+  }
+]

changedInput schema / properties / position / description

Previous value: -"Optional position filter (FLEX = RB/WR/TE)."New value: +"Optional position filter (FLEX = RB/WR/TE). One of: QB · RB · WR · TE · FLEX."

removedInput schema / properties / position / enum

Removed value: -[
-  "QB",
-  "RB",
-  "WR",
-  "TE",
-  "FLEX"
-]

removedInput schema / properties / position / type
```
Removed value: -"string"
```

addedInput schema / properties / scoring / anyOf

Added value: +[
+  {
+    "type": "string"
+  },
+  {
+    "enum": [
+      "standard",
+      "half_ppr",
+      "ppr"
+    ],
+    "type": "string"
+  }
+]

changedInput schema / properties / scoring / description

Previous value: -"Scoring format: standard, half_ppr (default), or ppr (full PPR). Overrides a platform preset. Works for Yahoo/ESPN/Sleeper defaults."New value: +"Scoring format: standard, half_ppr (default), or ppr (full PPR). Overrides a platform preset. Works for Yahoo/ESPN/Sleeper defaults. One of: standard · half_ppr · ppr."

removedInput schema / properties / scoring / enum

Removed value: -[
-  "standard",
-  "half_ppr",
-  "ppr"
-]

removedInput schema / properties / scoring / type
```
Removed value: -"string"
```

Changed2 schema fields changedSep 2, 2026

changedInput schema / properties / limit / description

Previous value: -"Max players to return, best first (default 50)."New value: +"Max players to return, best first (default 50). The full board is ~330 and all of it is free."

changedInput schema / properties / limit / maximum
```
Previous value: -100New value: +400
```

Changed1 schema field changedAug 18, 2026

changedInput schema / $schema

Previous value: -"http://json-schema.org/draft-07/schema#"New value: +"https://json-schema.org/draft/2020-12/schema"

First observedAug 11, 2026

TDQS

A3.8/5.0

Behavior3/5

Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?

Annotations already declare readOnlyHint=true, openWorldHint=false, and destructiveHint=false, so safety is covered. The description adds useful context by identifying the data source (median Kalshi prices), included metrics, and that the tool is 'Free.' It does not describe return shape or pagination beyond what the schema provides.

Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.

Conciseness5/5

Is the description appropriately sized, front-loaded, and free of redundancy?

The description is short and front-loaded, starting with the season and then the specific ranking content. Every element earns its place: data source, metrics, cost, and the availability note that resolves the misleading tool name.

Shorter descriptions cost fewer tokens and are easier for agents to parse. Every sentence should earn its place.

Completeness4/5

Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?

For a two-parameter, read-only ranking tool with fully described schema parameters and safety annotations, the description supplies enough detail about what the rankings contain and when they apply. The only minor gap is that it does not mention sibling tools or alternatives, but that is not essential to invoking this tool correctly.

Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.

Parameters3/5

Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?

Schema description coverage is 100%, so both parameters are already documented: limit with its default and position with its allowed values. The description does not add syntax or filtering meaning beyond the schema, so the baseline of 3 is appropriate.

Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.

Purpose4/5

Does the description clearly state what the tool does and how it differs from similar tools?

The description gives a specific resource and scope: this week's QB/RB/WR/TE rankings based on median Kalshi prices, including pass/rush/rec yards and anytime-TD price. It also clarifies the seasonality by noting the draft board returns in 2027. It does not explicitly distinguish itself from siblings such as compare_players or player_outlook, so it stops short of a 5.

Agents choose between tools based on descriptions. A clear purpose with a specific verb and resource helps agents select the right tool.

Usage Guidelines4/5

Does the description explain when to use this tool, when not to, or what alternatives exist?

The phrase 'In season' tells the agent when this tool applies, and '(Draft board returns in 2027.)' makes clear it is not the draft tool now. However, it does not name alternatives or explain when another sibling tool would be more appropriate.

Agents often have multiple tools that could apply. Explicit usage guidance like "use X instead of Y when Z" prevents misuse.

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This Week's Rankings by the Market

Input Schema

Schema Changelog

TDQS

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