Jock Taxes for ChatGPT

com.jocktaxes/chatgptjocktaxes.comstreamable-httpv1.0.0Scanned 2 hours ago

Pro athlete after-tax salary calculators for MLB, NBA, NFL and NHL, built for ChatGPT.

15 tools: 12 change things and 3 only read.

Reads private data · 2
Reads text others write · 0
Can send data out · 0
9 findings

Anlyon alternative

12 of these tools change something. Run those as governed actions.

Declare what an action changes, and Anlyon puts it under a shared limit, binds every approval to the exact request, and grades the outcome. It works on any HTTPS API you can describe as an action.

Anlyon does not run, proxy or govern this MCP server. A tool your own code calls directly is not routed through Anlyon and is not governed by it.

Import an OpenAPI spec →

Tools

Grouped by what each tool does, most consequential first. Open one for its reasons and full description; descriptions are the publisher's own words.

15 tools

Changes things 12Creates or changes something that can be changed back.Claude Code: ask

calculate_mlb_taxCalculate professional-athlete tax for one MLB season with the Jock Taxes engine.No findings
Why it is in this group
- Nothing in its name or description says what it does, so it is counted as a write.
Description, as the server wrote it
Calculate professional-athlete tax for one MLB season with the Jock Taxes engine. Ask the user for a missing team or salary. Do not invent team codes, seasons, salaries, or filing status. Call list_tax_calculator_inputs for allowed values. Send salary when the user has one season total taxed entirely as duty-day pay. Send base_salary plus optional signing_bonus and performance_bonus to match the site Salary + Bonuses form. Do not send salary together with base_salary or a bonus. exempt_signing_bonus_from_jock_tax defaults to true for a split, so the signing bonus is taxed only in the player's domicile. performance_bonus is included only when include_performance_bonus_in_jock_tax is true. art_xvi4_inducement_sb applies to an exempt signing bonus paid by a Canadian club to a U.S. resident. Present the result as a calculation, not as tax or legal advice. Required before this call: team, and salary or base_salary. Match a player with list_team_players only after league, team, and season_id are known. Repeat inputs and defaults from the result in the reply.
Annotations the server declares
- destructiveHint: false
- openWorldHint: false
- readOnlyHint: false
calculate_nba_taxCalculate professional-athlete tax for one NBA season with the Jock Taxes engine.No findings
Why it is in this group
- Nothing in its name or description says what it does, so it is counted as a write.
Description, as the server wrote it
Calculate professional-athlete tax for one NBA season with the Jock Taxes engine. Ask the user for a missing team or salary. Do not invent team codes, seasons, salaries, or filing status. Call list_tax_calculator_inputs for allowed values. Send salary when the user has one season total taxed entirely as duty-day pay. Send base_salary plus optional signing_bonus and performance_bonus to match the site Salary + Bonuses form. Do not send salary together with base_salary or a bonus. exempt_signing_bonus_from_jock_tax defaults to true for a split, so the signing bonus is taxed only in the player's domicile. performance_bonus is included only when include_performance_bonus_in_jock_tax is true. art_xvi4_inducement_sb applies to an exempt signing bonus paid by a Canadian club to a U.S. resident. Present the result as a calculation, not as tax or legal advice. Required before this call: team, and salary or base_salary. Match a player with list_team_players only after league, team, and season_id are known. Repeat inputs and defaults from the result in the reply.
Annotations the server declares
- destructiveHint: false
- openWorldHint: false
- readOnlyHint: false
calculate_nfl_taxCalculate professional-athlete tax for one NFL season with the Jock Taxes engine.No findings
Why it is in this group
- Nothing in its name or description says what it does, so it is counted as a write.
Description, as the server wrote it
Calculate professional-athlete tax for one NFL season with the Jock Taxes engine. Ask the user for a missing team or salary. Do not invent team codes, seasons, salaries, or filing status. Call list_tax_calculator_inputs for allowed values. Send salary when the user has one season total taxed entirely as duty-day pay. Send base_salary plus optional signing_bonus and performance_bonus to match the site Salary + Bonuses form. Do not send salary together with base_salary or a bonus. exempt_signing_bonus_from_jock_tax defaults to true for a split, so the signing bonus is taxed only in the player's domicile. performance_bonus is included only when include_performance_bonus_in_jock_tax is true. art_xvi4_inducement_sb applies to an exempt signing bonus paid by a Canadian club to a U.S. resident. Present the result as a calculation, not as tax or legal advice. Required before this call: team, and salary or base_salary. Match a player with list_team_players only after league, team, and season_id are known. Repeat inputs and defaults from the result in the reply. On NFL, other_duty_day_pay is added to the duty-day base and other_inducement_pay is added into the signing bonus. Send those with base_salary, not with a single season total.
Annotations the server declares
- destructiveHint: false
- openWorldHint: false
- readOnlyHint: false
calculate_nhl_taxCalculate professional-athlete tax for one NHL season with the Jock Taxes engine.No findings
Why it is in this group
- Nothing in its name or description says what it does, so it is counted as a write.
Description, as the server wrote it
Calculate professional-athlete tax for one NHL season with the Jock Taxes engine. Ask the user for a missing team or salary. Do not invent team codes, seasons, salaries, or filing status. Call list_tax_calculator_inputs for allowed values. Send salary when the user has one season total taxed entirely as duty-day pay. Send base_salary plus optional signing_bonus and performance_bonus to match the site Salary + Bonuses form. Do not send salary together with base_salary or a bonus. exempt_signing_bonus_from_jock_tax defaults to true for a split, so the signing bonus is taxed only in the player's domicile. performance_bonus is included only when include_performance_bonus_in_jock_tax is true. art_xvi4_inducement_sb applies to an exempt signing bonus paid by a Canadian club to a U.S. resident. Present the result as a calculation, not as tax or legal advice. Required before this call: team, and salary or base_salary. Match a player with list_team_players only after league, team, and season_id are known. Repeat inputs and defaults from the result in the reply.
Annotations the server declares
- destructiveHint: false
- openWorldHint: false
- readOnlyHint: false
equivalent_mlb_salaryFind the gross salary on a comparison MLB team that matches the after-tax income of a known salary on a baseline team.1 finding
Why it is in this group
- The description's first verb is "find": a word for reading.
- The server marks it as not read-only (readOnlyHint: false).
Findings
- Warn
  The server marks "equivalent_mlb_salary" as not read-only (readOnlyHint: false), and its words say it reads.
  Matched text
  annotations: {"readOnlyHint":false,"destructiveHint":false,"openWorldHint":false}; The description's first verb is "find": a word for reading.
  What this check looks for
Description, as the server wrote it
Find the gross salary on a comparison MLB team that matches the after-tax income of a known salary on a baseline team. Ask for the baseline team, comparison team, filing status, and either baseline_salary or base_salary. Do not invent team codes. Call list_tax_calculator_inputs for allowed values. Present the result as a calculation, not as tax or legal advice. Required before this call: baseline_team, comparison_team, and baseline_salary or base_salary. Match a player with list_team_players only after league, team, and season_id are known. Repeat inputs and defaults from the result in the reply.
Annotations the server declares
- destructiveHint: false
- openWorldHint: false
- readOnlyHint: false
equivalent_nba_salaryFind the gross salary on a comparison NBA team that matches the after-tax income of a known salary on a baseline team.1 finding
Why it is in this group
- The description's first verb is "find": a word for reading.
- The server marks it as not read-only (readOnlyHint: false).
Findings
- Warn
  The server marks "equivalent_nba_salary" as not read-only (readOnlyHint: false), and its words say it reads.
  Matched text
  annotations: {"readOnlyHint":false,"destructiveHint":false,"openWorldHint":false}; The description's first verb is "find": a word for reading.
  What this check looks for
Description, as the server wrote it
Find the gross salary on a comparison NBA team that matches the after-tax income of a known salary on a baseline team. Ask for the baseline team, comparison team, filing status, and either baseline_salary or base_salary. Do not invent team codes. Call list_tax_calculator_inputs for allowed values. Present the result as a calculation, not as tax or legal advice. Required before this call: baseline_team, comparison_team, and baseline_salary or base_salary. Match a player with list_team_players only after league, team, and season_id are known. Repeat inputs and defaults from the result in the reply.
Annotations the server declares
- destructiveHint: false
- openWorldHint: false
- readOnlyHint: false
equivalent_nfl_salaryFind the gross salary on a comparison NFL team that matches the after-tax income of a known salary on a baseline team.1 finding
Why it is in this group
- The description's first verb is "find": a word for reading.
- The server marks it as not read-only (readOnlyHint: false).
Findings
- Warn
  The server marks "equivalent_nfl_salary" as not read-only (readOnlyHint: false), and its words say it reads.
  Matched text
  annotations: {"readOnlyHint":false,"destructiveHint":false,"openWorldHint":false}; The description's first verb is "find": a word for reading.
  What this check looks for
Description, as the server wrote it
Find the gross salary on a comparison NFL team that matches the after-tax income of a known salary on a baseline team. Ask for the baseline team, comparison team, filing status, and either baseline_salary or base_salary. Do not invent team codes. Call list_tax_calculator_inputs for allowed values. Present the result as a calculation, not as tax or legal advice. Required before this call: baseline_team, comparison_team, and baseline_salary or base_salary. Match a player with list_team_players only after league, team, and season_id are known. Repeat inputs and defaults from the result in the reply. On NFL, other_duty_day_pay is added to the duty-day base and other_inducement_pay is added into the signing bonus. Send those with base_salary, not with a single season total.
Annotations the server declares
- destructiveHint: false
- openWorldHint: false
- readOnlyHint: false
equivalent_nhl_salaryFind the gross salary on a comparison NHL team that matches the after-tax income of a known salary on a baseline team.1 finding
Why it is in this group
- The description's first verb is "find": a word for reading.
- The server marks it as not read-only (readOnlyHint: false).
Findings
- Warn
  The server marks "equivalent_nhl_salary" as not read-only (readOnlyHint: false), and its words say it reads.
  Matched text
  annotations: {"readOnlyHint":false,"destructiveHint":false,"openWorldHint":false}; The description's first verb is "find": a word for reading.
  What this check looks for
Description, as the server wrote it
Find the gross salary on a comparison NHL team that matches the after-tax income of a known salary on a baseline team. Ask for the baseline team, comparison team, filing status, and either baseline_salary or base_salary. Do not invent team codes. Call list_tax_calculator_inputs for allowed values. Present the result as a calculation, not as tax or legal advice. Required before this call: baseline_team, comparison_team, and baseline_salary or base_salary. Match a player with list_team_players only after league, team, and season_id are known. Repeat inputs and defaults from the result in the reply.
Annotations the server declares
- destructiveHint: false
- openWorldHint: false
- readOnlyHint: false
player_movement_mlbCompare after-tax income when a MLB player moves from one team to another at the same gross pay.1 finding
Why it is in this group
- The description's first verb is "compare": a word for reading.
- The server marks it as not read-only (readOnlyHint: false).
Findings
- Warn
  The server marks "player_movement_mlb" as not read-only (readOnlyHint: false), and its words say it reads.
  Matched text
  annotations: {"readOnlyHint":false,"destructiveHint":false,"openWorldHint":false}; The description's first verb is "compare": a word for reading.
  What this check looks for
Description, as the server wrote it
Compare after-tax income when a MLB player moves from one team to another at the same gross pay. Ask for the origin team, destination team, filing status, and either gross_salary or base_salary. Do not invent team codes. Call list_tax_calculator_inputs for allowed values. Present the result as a calculation, not as tax or legal advice. Required before this call: from_team, to_team, and gross_salary or base_salary. Match a player with list_team_players only after league, team, and season_id are known. Repeat inputs and defaults from the result in the reply.
Annotations the server declares
- destructiveHint: false
- openWorldHint: false
- readOnlyHint: false
player_movement_nbaCompare after-tax income when a NBA player moves from one team to another at the same gross pay.1 finding
Why it is in this group
- The description's first verb is "compare": a word for reading.
- The server marks it as not read-only (readOnlyHint: false).
Findings
- Warn
  The server marks "player_movement_nba" as not read-only (readOnlyHint: false), and its words say it reads.
  Matched text
  annotations: {"readOnlyHint":false,"destructiveHint":false,"openWorldHint":false}; The description's first verb is "compare": a word for reading.
  What this check looks for
Description, as the server wrote it
Compare after-tax income when a NBA player moves from one team to another at the same gross pay. Ask for the origin team, destination team, filing status, and either gross_salary or base_salary. Do not invent team codes. Call list_tax_calculator_inputs for allowed values. Present the result as a calculation, not as tax or legal advice. Required before this call: from_team, to_team, and gross_salary or base_salary. Match a player with list_team_players only after league, team, and season_id are known. Repeat inputs and defaults from the result in the reply.
Annotations the server declares
- destructiveHint: false
- openWorldHint: false
- readOnlyHint: false
player_movement_nflCompare after-tax income when a NFL player moves from one team to another at the same gross pay.1 finding
Why it is in this group
- The description's first verb is "compare": a word for reading.
- The server marks it as not read-only (readOnlyHint: false).
Findings
- Warn
  The server marks "player_movement_nfl" as not read-only (readOnlyHint: false), and its words say it reads.
  Matched text
  annotations: {"readOnlyHint":false,"destructiveHint":false,"openWorldHint":false}; The description's first verb is "compare": a word for reading.
  What this check looks for
Description, as the server wrote it
Compare after-tax income when a NFL player moves from one team to another at the same gross pay. Ask for the origin team, destination team, filing status, and either gross_salary or base_salary. Do not invent team codes. Call list_tax_calculator_inputs for allowed values. Present the result as a calculation, not as tax or legal advice. Required before this call: from_team, to_team, and gross_salary or base_salary. Match a player with list_team_players only after league, team, and season_id are known. Repeat inputs and defaults from the result in the reply. On NFL, other_duty_day_pay is added to the duty-day base and other_inducement_pay is added into the signing bonus. Send those with base_salary, not with a single season total.
Annotations the server declares
- destructiveHint: false
- openWorldHint: false
- readOnlyHint: false
player_movement_nhlCompare after-tax income when a NHL player moves from one team to another at the same gross pay.1 finding
Why it is in this group
- The description's first verb is "compare": a word for reading.
- The server marks it as not read-only (readOnlyHint: false).
Findings
- Warn
  The server marks "player_movement_nhl" as not read-only (readOnlyHint: false), and its words say it reads.
  Matched text
  annotations: {"readOnlyHint":false,"destructiveHint":false,"openWorldHint":false}; The description's first verb is "compare": a word for reading.
  What this check looks for
Description, as the server wrote it
Compare after-tax income when a NHL player moves from one team to another at the same gross pay. Ask for the origin team, destination team, filing status, and either gross_salary or base_salary. Do not invent team codes. Call list_tax_calculator_inputs for allowed values. Present the result as a calculation, not as tax or legal advice. Required before this call: from_team, to_team, and gross_salary or base_salary. Match a player with list_team_players only after league, team, and season_id are known. Repeat inputs and defaults from the result in the reply.
Annotations the server declares
- destructiveHint: false
- openWorldHint: false
- readOnlyHint: false

Only reads 3Looks things up and changes nothing.Show 3 read-only tools

get_profileReturn the profile represented by this request's authenticated credentials.Reads private data1 finding
Why it is in this group
- The name "get_profile" says "get": a word for reading.
What it can reach
- private-dataThe description's first sentence says "return" and "credential": it reads secrets.
Findings
- Info
  The description mentions "credentials".
  Matched text
  description: "...esented by this request's authenticated credentials. The opaque id is unique within this ap..."
  What this check looks for
Description, as the server wrote it
Return the profile represented by this request's authenticated credentials. The opaque id is unique within this app and remains unchanged across token refresh, reconnection, and display-metadata changes.
Annotations the server declares
- readOnlyHint: true
- destructiveHint: false
- openWorldHint: false
list_tax_calculator_inputsList leagues, seasons, filing statuses, and team codes accepted by the NHL, NFL, MLB, and NBA tax calculators.No findings
Why it is in this group
- The name "list_tax_calculator_inputs" says "list": a word for reading.
Description, as the server wrote it
List leagues, seasons, filing statuses, and team codes accepted by the NHL, NFL, MLB, and NBA tax calculators. Does not use calculation quota.
Annotations the server declares
- destructiveHint: false
- openWorldHint: false
- readOnlyHint: true
list_team_playersList player ids and pay for one team and season from the salary tables.Reads private dataNo findings
Why it is in this group
- The name "list_team_players" says "list": a word for reading.
What it can reach
- private-dataThe description's first sentence says "list" and "table": it reads databases.
Description, as the server wrote it
List player ids and pay for one team and season from the salary tables. Requires league, team, and season_id. Match the user's name against name and last_first. If several rows fit, or none fit, ask the user which person they mean. Copy season_total into the calculator's one-amount field, or copy base_salary, signing_bonus, and performance_bonus for Salary + Bonuses. Does not use request quota.
Annotations the server declares
- destructiveHint: false
- openWorldHint: false
- readOnlyHint: true

This is not a safety rating, and no finding is not a safety guarantee. The groups and findings come from fixed checks of the tool definitions the server returned on the date shown, not from its code or what it does when called. How the checks work.

Exfil surface

Which tools read private data, which read text someone else can write, and which can send data out. One of each is a path a prompt injection can use.

No private-data, untrusted-input, outbound path in this server alone: no tool is tagged untrusted-input or outbound.

Reads private data2: Reads files, mail, messages, databases, secrets, calendars or repositories.; get_profile
list_team_players
Reads text others write0: Brings in text someone else can write: web pages, inbound email, messages, issues and comments.
Can send data out0: Can carry data to people or systems: it sends, posts or publishes, or takes a recipient, channel or URL.

Other servers in the same agent add their own tools to these paths. Audit your whole setup to see them together.

Findings

Matches of fixed checks, with the text they matched.

8 warn1 info

Warnequivalent_nhl_salary
The server marks "equivalent_nhl_salary" as not read-only (readOnlyHint: false), and its words say it reads.
Matched text
annotations: {"readOnlyHint":false,"destructiveHint":false,"openWorldHint":false}; The description's first verb is "find": a word for reading.
What this check looks for
Warnplayer_movement_nhl
The server marks "player_movement_nhl" as not read-only (readOnlyHint: false), and its words say it reads.
Matched text
annotations: {"readOnlyHint":false,"destructiveHint":false,"openWorldHint":false}; The description's first verb is "compare": a word for reading.
What this check looks for
Warnequivalent_nfl_salary
The server marks "equivalent_nfl_salary" as not read-only (readOnlyHint: false), and its words say it reads.
Matched text
annotations: {"readOnlyHint":false,"destructiveHint":false,"openWorldHint":false}; The description's first verb is "find": a word for reading.
What this check looks for
Warnplayer_movement_nfl
The server marks "player_movement_nfl" as not read-only (readOnlyHint: false), and its words say it reads.
Matched text
annotations: {"readOnlyHint":false,"destructiveHint":false,"openWorldHint":false}; The description's first verb is "compare": a word for reading.
What this check looks for
Warnequivalent_mlb_salary
The server marks "equivalent_mlb_salary" as not read-only (readOnlyHint: false), and its words say it reads.
Matched text
annotations: {"readOnlyHint":false,"destructiveHint":false,"openWorldHint":false}; The description's first verb is "find": a word for reading.
What this check looks for
Warnplayer_movement_mlb
The server marks "player_movement_mlb" as not read-only (readOnlyHint: false), and its words say it reads.
Matched text
annotations: {"readOnlyHint":false,"destructiveHint":false,"openWorldHint":false}; The description's first verb is "compare": a word for reading.
What this check looks for

Show 3 more findings

Warnequivalent_nba_salary
The server marks "equivalent_nba_salary" as not read-only (readOnlyHint: false), and its words say it reads.
Matched text
annotations: {"readOnlyHint":false,"destructiveHint":false,"openWorldHint":false}; The description's first verb is "find": a word for reading.
What this check looks for
Warnplayer_movement_nba
The server marks "player_movement_nba" as not read-only (readOnlyHint: false), and its words say it reads.
Matched text
annotations: {"readOnlyHint":false,"destructiveHint":false,"openWorldHint":false}; The description's first verb is "compare": a word for reading.
What this check looks for
Infoget_profile
The description mentions "credentials".
Matched text
description: "...esented by this request's authenticated credentials. The opaque id is unique within this ap..."
What this check looks for

History

Changes to its tool definitions and to its remote endpoint, newest first.

No change seen yet. Its tools are rescanned every day, and a remote endpoint is looked at once a week.

All changes to this server

Install

Pinned to version 1.0.0. Values in angle brackets are yours to fill in.

claude mcp add --transport http chatgpt https://jocktaxes.com/mcp/chatgpt

claude mcp add --transport http chatgpt https://jocktaxes.com/mcp/chatgpt

Run in a terminal.

Claude Code permissions

Allow the reads, ask before a change or a way out, deny the deletes. Paste into .claude/settings.json.

.claude/settings.json

{
  "permissions": {
    "allow": [
      "mcp__chatgpt__list_team_players",
      "mcp__chatgpt__list_tax_calculator_inputs",
      "mcp__chatgpt__get_profile"
    ],
    "ask": [
      "mcp__chatgpt__calculate_nhl_tax",
      "mcp__chatgpt__equivalent_nhl_salary",
      "mcp__chatgpt__player_movement_nhl",
      "mcp__chatgpt__calculate_nfl_tax",
      "mcp__chatgpt__equivalent_nfl_salary",
      "mcp__chatgpt__player_movement_nfl",
      "mcp__chatgpt__calculate_mlb_tax",
      "mcp__chatgpt__equivalent_mlb_salary",
      "mcp__chatgpt__player_movement_mlb",
      "mcp__chatgpt__calculate_nba_tax",
      "mcp__chatgpt__equivalent_nba_salary",
      "mcp__chatgpt__player_movement_nba"
    ],
    "deny": []
  }
}

Tools that only read are allowed, tools that change things ask first, tools that delete or cancel are denied. A read that can send data out (it takes a URL, say) asks first too. It assumes the server is installed as chatgpt. Review it before you use it.

Capability tags behind 2 rules

mcp__chatgpt__list_team_players private-data
mcp__chatgpt__get_profile private-data

Keep the decision: fail CI when the tools change, follow every change, or show a badge.

Pin in CI

Fail a build when the tools you reviewed are not the tools the server serves today.

curl -s "https://anlyon.dev/api/v1/servers/com.jocktaxes/chatgpt/verify?hash=ba780b1de5ab00344c3e7629b0a8e1e7922245a98ae12b350f50dee44689e816" | jq -e '.changed == false'

Pinned hash ba780b1de5ab, from Oct 22, 2026, 16:18 UTC.

Watch

Get told when its tools change: a new tool, a new description, a new class.

https://anlyon.dev/servers/com.jocktaxes/chatgpt/changes.xml

An Atom feed. Works in any feed reader or Slack's RSS app.

Badge

[![anlyon.dev](https://anlyon.dev/badge/com.jocktaxes/chatgpt.svg)](https://anlyon.dev/servers/com.jocktaxes/chatgpt)

Source: MCP Registry. Synced Oct 22, 2026, 16:17 UTC.