# Jock Taxes for Claude (remote · jocktaxes.com)

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

- Trust score: 68/100 (medium)
- Registry status: active
- Liveness: live
- Owner verified: no
- Last scored: 2026-10-23

## Components

- remote · `jocktaxes.com`: 68/100 (this document), [markdown](https://verifymcp.io/servers/com-jocktaxes-claude/mcp-claude.md), [page](https://verifymcp.io/servers/com-jocktaxes-claude/mcp-claude)

## Channel facts

- Endpoint: `https://jocktaxes.com/mcp/claude`
- Transports: `streamable-http`
- Auth: `none`
- Version: `1.0.0`

## Trust breakdown

How this component scores in each security and reliability category. Every signal is checked automatically against the live server, and we only credit what we can confirm. Scores are 0–100 per category. Scoring method: https://verifymcp.io/docs/scoring (what has changed: https://verifymcp.io/docs/scoring/changelog)

Scored 2026-10-23.

- **Endpoint Security**: 74/100
  - The endpoint's TLS certificate is valid, in date, and uses a strong key.
  - No authorisation is required to call this server. Every tool declares its destructiveHint and none is destructive, so open access doesn't expose one.
  - HTTPS is enforced; there's no plaintext access path.
  - HSTS check failed: the Strict-Transport-Security header is absent.
  - DNSSEC check failed: this domain isn't protected by DNSSEC.
- **Transport & Reachability**: 100/100
  - Verified streamable-http transport via a live MCP handshake.
- **Schema Quality & AI Usability**: 54/100
  - AI-judged instruction clarity (good).
  - Context-footprint check failed: tool/resource definitions use about 7616 tokens (~507/item across 15 items; 15 tools + 0 resources), over budget; trim descriptions and params.
  - Usage-examples check failed: none of the tools include examples.
- **Stability & Change Management**: 3/100
  - Stability observed for 1 of 30 days with no destabilising changes; credit accrues until the full window elapses.
- **Tool Coverage**: 100/100
  - 100% of tools have a non-trivial description (not blank, and not just the tool's name).
  - 98% of tool parameters carry a description.
  - Structured output schemas are declared (93% of tools); any adoption earns full credit.
- **Tool Safety**: 100/100
  - No prompt-injection markers were found in the server instructions, tool names or descriptions we captured.
  - We read all 15 captured tool definition(s), and no name or description among them implies an irreversible operation.
  - An AI judge read all 16 captured unit(s) of tool text and found none that tries to manipulate the model reading it.
- **Capabilities**: 100/100
  - Implements a current MCP spec version (2026-07-28).

## Install

### How do I install the Jock Taxes for Claude MCP server?

Jock Taxes for Claude is a hosted endpoint at https://jocktaxes.com/mcp/claude, so there is nothing to install locally. Ready-made configuration for Claude, Cursor, VS Code, Codex and 5 more is on this page, copied from each client's own documentation.

### Claude

```bash
claude mcp add --transport http com-jocktaxes-claude 'https://jocktaxes.com/mcp/claude'
```

### Cursor

```json
{
  "mcpServers": {
    "com-jocktaxes-claude": {
      "url": "https://jocktaxes.com/mcp/claude"
    }
  }
}
```

### VS Code

```json
{
  "servers": {
    "com-jocktaxes-claude": {
      "type": "http",
      "url": "https://jocktaxes.com/mcp/claude"
    }
  }
}
```

### Codex

```toml
[mcp_servers.com-jocktaxes-claude]
url = "https://jocktaxes.com/mcp/claude"
```

### opencode

```json
{
  "$schema": "https://opencode.ai/config.json",
  "mcp": {
    "com-jocktaxes-claude": {
      "type": "remote",
      "url": "https://jocktaxes.com/mcp/claude",
      "enabled": true
    }
  }
}
```

### OpenClaw

```bash
openclaw mcp add com-jocktaxes-claude --url 'https://jocktaxes.com/mcp/claude' --transport streamable-http
```

### Hermes

```yaml
mcp_servers:
  com-jocktaxes-claude:
    url: "https://jocktaxes.com/mcp/claude"
```

### Netclaw

```json
{
  "McpServers": {
    "com-jocktaxes-claude": {
      "Transport": "http",
      "Url": "https://jocktaxes.com/mcp/claude"
    }
  }
}
```

### Vellum

```bash
assistant mcp add com-jocktaxes-claude -t streamable-http -u 'https://jocktaxes.com/mcp/claude'
```

### Other

```json
{
  "mcpServers": {
    "com-jocktaxes-claude": {
      "type": "http",
      "url": "https://jocktaxes.com/mcp/claude"
    }
  }
}
```

The mcpServers block is a cross-client convention. Remote transports vary, so check your client's docs.

## Changelog

Every change recorded for this component, newest first. Days that predate change tracking, or that we cannot explain, say so: "we were watching and nothing happened" and "we were not watching" are different claims.

### 2026-10-23 (score 68, +1)

- [functional improvement] Stability: unverified → 0.03

### 2026-10-22 (score 67)

First indexed and scored.

## MCP tools (15)

### `calculate_nhl_tax` (~599 tokens)

Calculate NHL tax

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.

Input parameters:

- `art_xvi4_inducement_sb` (boolean): Opt in to Canada–U.S. Treaty Art. XVI(4) on an exempt signing bonus from a Canadian club.
- `base_salary`: Duty-day base in whole dollars before signing and performance bonuses. Send this with the bonus fields to match Salary + Bonuses. Leave it out when sending salary.
- `birth_country`: Birth country code used with is_us_person.
- `contract_season`: Contract season label, such as 2025-26.
- `estimated_playoff_games`: Extra postseason games. Use 0 when there are none.
- `exempt_signing_bonus_from_jock_tax`: When true, the signing bonus is taxed in the player's domicile and left out of duty-day allocation.
- `filing_status`: Single or Married_Joint. Defaults to Single when omitted.
- `include_performance_bonus_in_jock_tax` (boolean): When true, performance_bonus is part of the season total and of duty-day pay.
- `performance_bonus`: Performance bonus in whole dollars. Included in the total only when include_performance_bonus_in_jock_tax is true.
- `primary_domicile`: Resident tax home: a state, a city, or a mode such as local_jurisdiction. Defaults to local_jurisdiction when omitted.
- `salary`: One season total in whole dollars, taxed entirely as duty-day pay. Leave this out when sending base_salary.
- `season_id`: Schedule season as eight digits, such as 20252026. Defaults to the latest season for the league when omitted.
- `signing_bonus`: Signing bonus in whole dollars. The site adds this into the season total. On NFL it also includes other inducement pay.
- `team` (string, required): Team code, such as BOS.

Output parameters:

- `defaults` (array)
- `disclaimer` (string)
- `inputs` (object)
- `result` (object)
- `sport` (string)

### `equivalent_nhl_salary` (~556 tokens)

Match NHL after-tax salary

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.

Input parameters:

- `art_xvi4_inducement_sb` (boolean): Opt in to Canada–U.S. Treaty Art. XVI(4) on an exempt signing bonus from a Canadian club.
- `base_salary`: Duty-day base in whole dollars before signing and performance bonuses. Send this with the bonus fields to match Salary + Bonuses. Leave it out when sending baseline_salary.
- `baseline_salary`: One season total on the baseline team, taxed entirely as duty-day pay. Leave this out when sending base_salary.
- `baseline_team` (string, required): Team that pays the known salary.
- `birth_country`: Birth country code used with is_us_person.
- `comparison_primary_domicile`: Resident tax home modeled for the comparison team.
- `comparison_team` (string, required): Team whose gross pay is solved to match baseline after-tax income.
- `contract_season`: Contract season label, such as 2025-26.
- `estimated_playoff_games`: Extra postseason games. Use 0 when there are none.
- `exempt_signing_bonus_from_jock_tax`: When true, the signing bonus is taxed in the player's domicile and left out of duty-day allocation.
- `filing_status`: Single or Married_Joint. Defaults to Single when omitted.
- `include_performance_bonus_in_jock_tax` (boolean): When true, performance_bonus is part of the season total and of duty-day pay.
- `performance_bonus`: Performance bonus in whole dollars. Included in the total only when include_performance_bonus_in_jock_tax is true.
- `primary_domicile`: Resident tax home: a state, a city, or a mode such as local_jurisdiction. Defaults to local_jurisdiction when omitted.
- `season_id`: Schedule season as eight digits, such as 20252026. Defaults to the latest season for the league when omitted.
- `signing_bonus`: Signing bonus in whole dollars. The site adds this into the season total. On NFL it also includes other inducement pay.
- `tolerance`: Dollar tolerance for the equivalent-salary search. Defaults to 1.

Output parameters:

- `defaults` (array)
- `disclaimer` (string)
- `inputs` (object)
- `result` (object)
- `sport` (string)

### `player_movement_nhl` (~521 tokens)

Compare NHL move

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.

Input parameters:

- `art_xvi4_inducement_sb` (boolean): Opt in to Canada–U.S. Treaty Art. XVI(4) on an exempt signing bonus from a Canadian club.
- `base_salary`: Duty-day base in whole dollars before signing and performance bonuses. Send this with the bonus fields to match Salary + Bonuses. Leave it out when sending gross_salary.
- `birth_country`: Birth country code used with is_us_person.
- `comparison_primary_domicile`: Resident tax home modeled on the destination team.
- `contract_season`: Contract season label, such as 2025-26.
- `estimated_playoff_games`: Extra postseason games. Use 0 when there are none.
- `exempt_signing_bonus_from_jock_tax`: When true, the signing bonus is taxed in the player's domicile and left out of duty-day allocation.
- `filing_status`: Single or Married_Joint. Defaults to Single when omitted.
- `from_team` (string, required): Team the player leaves.
- `gross_salary`: One season total, taxed entirely as duty-day pay. Leave this out when sending base_salary.
- `include_performance_bonus_in_jock_tax` (boolean): When true, performance_bonus is part of the season total and of duty-day pay.
- `performance_bonus`: Performance bonus in whole dollars. Included in the total only when include_performance_bonus_in_jock_tax is true.
- `primary_domicile`: Resident tax home: a state, a city, or a mode such as local_jurisdiction. Defaults to local_jurisdiction when omitted.
- `season_id`: Schedule season as eight digits, such as 20252026. Defaults to the latest season for the league when omitted.
- `signing_bonus`: Signing bonus in whole dollars. The site adds this into the season total. On NFL it also includes other inducement pay.
- `to_team` (string, required): Team the player joins.

Output parameters:

- `defaults` (array)
- `disclaimer` (string)
- `inputs` (object)
- `result` (object)
- `sport` (string)

### `calculate_nfl_tax` (~642 tokens)

Calculate NFL tax

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.

Input parameters:

- `base_salary`: Duty-day base in whole dollars before signing and performance bonuses. Send this with the bonus fields to match Salary + Bonuses. Leave it out when sending salary.
- `birth_country`: Birth country code used with is_us_person.
- `contract_season`: Contract season label, such as 2025-26.
- `estimated_playoff_games`: Extra postseason games. Use 0 when there are none.
- `exempt_signing_bonus_from_jock_tax`: When true, the signing bonus is taxed in the player's domicile and left out of duty-day allocation.
- `filing_status`: Single or Married_Joint. Defaults to Single when omitted.
- `include_performance_bonus_in_jock_tax` (boolean): When true, performance_bonus is part of the season total and of duty-day pay.
- `other_duty_day_pay`: NFL cash bucket added to the duty-day base before the season total is summed.
- `other_inducement_pay`: NFL cash bucket added into signing_bonus.
- `performance_bonus`: Performance bonus in whole dollars. Included in the total only when include_performance_bonus_in_jock_tax is true.
- `primary_domicile`: Resident tax home: a state, a city, or a mode such as local_jurisdiction. Defaults to local_jurisdiction when omitted.
- `salary`: One season total in whole dollars, taxed entirely as duty-day pay. Leave this out when sending base_salary.
- `season_id`: Schedule season as eight digits, such as 20252026. Defaults to the latest season for the league when omitted.
- `signing_bonus`: Signing bonus in whole dollars. The site adds this into the season total. On NFL it also includes other inducement pay.
- `team` (string, required): Team code, such as BOS.

Output parameters:

- `defaults` (array)
- `disclaimer` (string)
- `inputs` (object)
- `result` (object)
- `sport` (string)

### `equivalent_nfl_salary` (~599 tokens)

Match NFL after-tax salary

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.

Input parameters:

- `base_salary`: Duty-day base in whole dollars before signing and performance bonuses. Send this with the bonus fields to match Salary + Bonuses. Leave it out when sending baseline_salary.
- `baseline_salary`: One season total on the baseline team, taxed entirely as duty-day pay. Leave this out when sending base_salary.
- `baseline_team` (string, required): Team that pays the known salary.
- `birth_country`: Birth country code used with is_us_person.
- `comparison_primary_domicile`: Resident tax home modeled for the comparison team.
- `comparison_team` (string, required): Team whose gross pay is solved to match baseline after-tax income.
- `contract_season`: Contract season label, such as 2025-26.
- `estimated_playoff_games`: Extra postseason games. Use 0 when there are none.
- `exempt_signing_bonus_from_jock_tax`: When true, the signing bonus is taxed in the player's domicile and left out of duty-day allocation.
- `filing_status`: Single or Married_Joint. Defaults to Single when omitted.
- `include_performance_bonus_in_jock_tax` (boolean): When true, performance_bonus is part of the season total and of duty-day pay.
- `other_duty_day_pay`: NFL cash bucket added to the duty-day base before the season total is summed.
- `other_inducement_pay`: NFL cash bucket added into signing_bonus.
- `performance_bonus`: Performance bonus in whole dollars. Included in the total only when include_performance_bonus_in_jock_tax is true.
- `primary_domicile`: Resident tax home: a state, a city, or a mode such as local_jurisdiction. Defaults to local_jurisdiction when omitted.
- `season_id`: Schedule season as eight digits, such as 20252026. Defaults to the latest season for the league when omitted.
- `signing_bonus`: Signing bonus in whole dollars. The site adds this into the season total. On NFL it also includes other inducement pay.
- `tolerance`: Dollar tolerance for the equivalent-salary search. Defaults to 1.

Output parameters:

- `defaults` (array)
- `disclaimer` (string)
- `inputs` (object)
- `result` (object)
- `sport` (string)

### `player_movement_nfl` (~564 tokens)

Compare NFL move

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.

Input parameters:

- `base_salary`: Duty-day base in whole dollars before signing and performance bonuses. Send this with the bonus fields to match Salary + Bonuses. Leave it out when sending gross_salary.
- `birth_country`: Birth country code used with is_us_person.
- `comparison_primary_domicile`: Resident tax home modeled on the destination team.
- `contract_season`: Contract season label, such as 2025-26.
- `estimated_playoff_games`: Extra postseason games. Use 0 when there are none.
- `exempt_signing_bonus_from_jock_tax`: When true, the signing bonus is taxed in the player's domicile and left out of duty-day allocation.
- `filing_status`: Single or Married_Joint. Defaults to Single when omitted.
- `from_team` (string, required): Team the player leaves.
- `gross_salary`: One season total, taxed entirely as duty-day pay. Leave this out when sending base_salary.
- `include_performance_bonus_in_jock_tax` (boolean): When true, performance_bonus is part of the season total and of duty-day pay.
- `other_duty_day_pay`: NFL cash bucket added to the duty-day base before the season total is summed.
- `other_inducement_pay`: NFL cash bucket added into signing_bonus.
- `performance_bonus`: Performance bonus in whole dollars. Included in the total only when include_performance_bonus_in_jock_tax is true.
- `primary_domicile`: Resident tax home: a state, a city, or a mode such as local_jurisdiction. Defaults to local_jurisdiction when omitted.
- `season_id`: Schedule season as eight digits, such as 20252026. Defaults to the latest season for the league when omitted.
- `signing_bonus`: Signing bonus in whole dollars. The site adds this into the season total. On NFL it also includes other inducement pay.
- `to_team` (string, required): Team the player joins.

Output parameters:

- `defaults` (array)
- `disclaimer` (string)
- `inputs` (object)
- `result` (object)
- `sport` (string)

### `calculate_mlb_tax` (~599 tokens)

Calculate MLB tax

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.

Input parameters:

- `art_xvi4_inducement_sb` (boolean): Opt in to Canada–U.S. Treaty Art. XVI(4) on an exempt signing bonus from a Canadian club.
- `base_salary`: Duty-day base in whole dollars before signing and performance bonuses. Send this with the bonus fields to match Salary + Bonuses. Leave it out when sending salary.
- `birth_country`: Birth country code used with is_us_person.
- `contract_season`: Contract season label, such as 2025-26.
- `estimated_playoff_games`: Extra postseason games. Use 0 when there are none.
- `exempt_signing_bonus_from_jock_tax`: When true, the signing bonus is taxed in the player's domicile and left out of duty-day allocation.
- `filing_status`: Single or Married_Joint. Defaults to Single when omitted.
- `include_performance_bonus_in_jock_tax` (boolean): When true, performance_bonus is part of the season total and of duty-day pay.
- `performance_bonus`: Performance bonus in whole dollars. Included in the total only when include_performance_bonus_in_jock_tax is true.
- `primary_domicile`: Resident tax home: a state, a city, or a mode such as local_jurisdiction. Defaults to local_jurisdiction when omitted.
- `salary`: One season total in whole dollars, taxed entirely as duty-day pay. Leave this out when sending base_salary.
- `season_id`: Schedule season as eight digits, such as 20252026. Defaults to the latest season for the league when omitted.
- `signing_bonus`: Signing bonus in whole dollars. The site adds this into the season total. On NFL it also includes other inducement pay.
- `team` (string, required): Team code, such as BOS.

Output parameters:

- `defaults` (array)
- `disclaimer` (string)
- `inputs` (object)
- `result` (object)
- `sport` (string)

### `equivalent_mlb_salary` (~556 tokens)

Match MLB after-tax salary

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.

Input parameters:

- `art_xvi4_inducement_sb` (boolean): Opt in to Canada–U.S. Treaty Art. XVI(4) on an exempt signing bonus from a Canadian club.
- `base_salary`: Duty-day base in whole dollars before signing and performance bonuses. Send this with the bonus fields to match Salary + Bonuses. Leave it out when sending baseline_salary.
- `baseline_salary`: One season total on the baseline team, taxed entirely as duty-day pay. Leave this out when sending base_salary.
- `baseline_team` (string, required): Team that pays the known salary.
- `birth_country`: Birth country code used with is_us_person.
- `comparison_primary_domicile`: Resident tax home modeled for the comparison team.
- `comparison_team` (string, required): Team whose gross pay is solved to match baseline after-tax income.
- `contract_season`: Contract season label, such as 2025-26.
- `estimated_playoff_games`: Extra postseason games. Use 0 when there are none.
- `exempt_signing_bonus_from_jock_tax`: When true, the signing bonus is taxed in the player's domicile and left out of duty-day allocation.
- `filing_status`: Single or Married_Joint. Defaults to Single when omitted.
- `include_performance_bonus_in_jock_tax` (boolean): When true, performance_bonus is part of the season total and of duty-day pay.
- `performance_bonus`: Performance bonus in whole dollars. Included in the total only when include_performance_bonus_in_jock_tax is true.
- `primary_domicile`: Resident tax home: a state, a city, or a mode such as local_jurisdiction. Defaults to local_jurisdiction when omitted.
- `season_id`: Schedule season as eight digits, such as 20252026. Defaults to the latest season for the league when omitted.
- `signing_bonus`: Signing bonus in whole dollars. The site adds this into the season total. On NFL it also includes other inducement pay.
- `tolerance`: Dollar tolerance for the equivalent-salary search. Defaults to 1.

Output parameters:

- `defaults` (array)
- `disclaimer` (string)
- `inputs` (object)
- `result` (object)
- `sport` (string)

### `player_movement_mlb` (~521 tokens)

Compare MLB move

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.

Input parameters:

- `art_xvi4_inducement_sb` (boolean): Opt in to Canada–U.S. Treaty Art. XVI(4) on an exempt signing bonus from a Canadian club.
- `base_salary`: Duty-day base in whole dollars before signing and performance bonuses. Send this with the bonus fields to match Salary + Bonuses. Leave it out when sending gross_salary.
- `birth_country`: Birth country code used with is_us_person.
- `comparison_primary_domicile`: Resident tax home modeled on the destination team.
- `contract_season`: Contract season label, such as 2025-26.
- `estimated_playoff_games`: Extra postseason games. Use 0 when there are none.
- `exempt_signing_bonus_from_jock_tax`: When true, the signing bonus is taxed in the player's domicile and left out of duty-day allocation.
- `filing_status`: Single or Married_Joint. Defaults to Single when omitted.
- `from_team` (string, required): Team the player leaves.
- `gross_salary`: One season total, taxed entirely as duty-day pay. Leave this out when sending base_salary.
- `include_performance_bonus_in_jock_tax` (boolean): When true, performance_bonus is part of the season total and of duty-day pay.
- `performance_bonus`: Performance bonus in whole dollars. Included in the total only when include_performance_bonus_in_jock_tax is true.
- `primary_domicile`: Resident tax home: a state, a city, or a mode such as local_jurisdiction. Defaults to local_jurisdiction when omitted.
- `season_id`: Schedule season as eight digits, such as 20252026. Defaults to the latest season for the league when omitted.
- `signing_bonus`: Signing bonus in whole dollars. The site adds this into the season total. On NFL it also includes other inducement pay.
- `to_team` (string, required): Team the player joins.

Output parameters:

- `defaults` (array)
- `disclaimer` (string)
- `inputs` (object)
- `result` (object)
- `sport` (string)

### `calculate_nba_tax` (~599 tokens)

Calculate NBA tax

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.

Input parameters:

- `art_xvi4_inducement_sb` (boolean): Opt in to Canada–U.S. Treaty Art. XVI(4) on an exempt signing bonus from a Canadian club.
- `base_salary`: Duty-day base in whole dollars before signing and performance bonuses. Send this with the bonus fields to match Salary + Bonuses. Leave it out when sending salary.
- `birth_country`: Birth country code used with is_us_person.
- `contract_season`: Contract season label, such as 2025-26.
- `estimated_playoff_games`: Extra postseason games. Use 0 when there are none.
- `exempt_signing_bonus_from_jock_tax`: When true, the signing bonus is taxed in the player's domicile and left out of duty-day allocation.
- `filing_status`: Single or Married_Joint. Defaults to Single when omitted.
- `include_performance_bonus_in_jock_tax` (boolean): When true, performance_bonus is part of the season total and of duty-day pay.
- `performance_bonus`: Performance bonus in whole dollars. Included in the total only when include_performance_bonus_in_jock_tax is true.
- `primary_domicile`: Resident tax home: a state, a city, or a mode such as local_jurisdiction. Defaults to local_jurisdiction when omitted.
- `salary`: One season total in whole dollars, taxed entirely as duty-day pay. Leave this out when sending base_salary.
- `season_id`: Schedule season as eight digits, such as 20252026. Defaults to the latest season for the league when omitted.
- `signing_bonus`: Signing bonus in whole dollars. The site adds this into the season total. On NFL it also includes other inducement pay.
- `team` (string, required): Team code, such as BOS.

Output parameters:

- `defaults` (array)
- `disclaimer` (string)
- `inputs` (object)
- `result` (object)
- `sport` (string)

### `equivalent_nba_salary` (~556 tokens)

Match NBA after-tax salary

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.

Input parameters:

- `art_xvi4_inducement_sb` (boolean): Opt in to Canada–U.S. Treaty Art. XVI(4) on an exempt signing bonus from a Canadian club.
- `base_salary`: Duty-day base in whole dollars before signing and performance bonuses. Send this with the bonus fields to match Salary + Bonuses. Leave it out when sending baseline_salary.
- `baseline_salary`: One season total on the baseline team, taxed entirely as duty-day pay. Leave this out when sending base_salary.
- `baseline_team` (string, required): Team that pays the known salary.
- `birth_country`: Birth country code used with is_us_person.
- `comparison_primary_domicile`: Resident tax home modeled for the comparison team.
- `comparison_team` (string, required): Team whose gross pay is solved to match baseline after-tax income.
- `contract_season`: Contract season label, such as 2025-26.
- `estimated_playoff_games`: Extra postseason games. Use 0 when there are none.
- `exempt_signing_bonus_from_jock_tax`: When true, the signing bonus is taxed in the player's domicile and left out of duty-day allocation.
- `filing_status`: Single or Married_Joint. Defaults to Single when omitted.
- `include_performance_bonus_in_jock_tax` (boolean): When true, performance_bonus is part of the season total and of duty-day pay.
- `performance_bonus`: Performance bonus in whole dollars. Included in the total only when include_performance_bonus_in_jock_tax is true.
- `primary_domicile`: Resident tax home: a state, a city, or a mode such as local_jurisdiction. Defaults to local_jurisdiction when omitted.
- `season_id`: Schedule season as eight digits, such as 20252026. Defaults to the latest season for the league when omitted.
- `signing_bonus`: Signing bonus in whole dollars. The site adds this into the season total. On NFL it also includes other inducement pay.
- `tolerance`: Dollar tolerance for the equivalent-salary search. Defaults to 1.

Output parameters:

- `defaults` (array)
- `disclaimer` (string)
- `inputs` (object)
- `result` (object)
- `sport` (string)

### `player_movement_nba` (~521 tokens)

Compare NBA move

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.

Input parameters:

- `art_xvi4_inducement_sb` (boolean): Opt in to Canada–U.S. Treaty Art. XVI(4) on an exempt signing bonus from a Canadian club.
- `base_salary`: Duty-day base in whole dollars before signing and performance bonuses. Send this with the bonus fields to match Salary + Bonuses. Leave it out when sending gross_salary.
- `birth_country`: Birth country code used with is_us_person.
- `comparison_primary_domicile`: Resident tax home modeled on the destination team.
- `contract_season`: Contract season label, such as 2025-26.
- `estimated_playoff_games`: Extra postseason games. Use 0 when there are none.
- `exempt_signing_bonus_from_jock_tax`: When true, the signing bonus is taxed in the player's domicile and left out of duty-day allocation.
- `filing_status`: Single or Married_Joint. Defaults to Single when omitted.
- `from_team` (string, required): Team the player leaves.
- `gross_salary`: One season total, taxed entirely as duty-day pay. Leave this out when sending base_salary.
- `include_performance_bonus_in_jock_tax` (boolean): When true, performance_bonus is part of the season total and of duty-day pay.
- `performance_bonus`: Performance bonus in whole dollars. Included in the total only when include_performance_bonus_in_jock_tax is true.
- `primary_domicile`: Resident tax home: a state, a city, or a mode such as local_jurisdiction. Defaults to local_jurisdiction when omitted.
- `season_id`: Schedule season as eight digits, such as 20252026. Defaults to the latest season for the league when omitted.
- `signing_bonus`: Signing bonus in whole dollars. The site adds this into the season total. On NFL it also includes other inducement pay.
- `to_team` (string, required): Team the player joins.

Output parameters:

- `defaults` (array)
- `disclaimer` (string)
- `inputs` (object)
- `result` (object)
- `sport` (string)

### `list_team_players` (~116 tokens)

List team players

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.

Input parameters:

- `league` (string, required)
- `season_id` (string, required)
- `team` (string, required)

Output parameters:

- `league` (string)
- `players` (array)
- `season_id` (string)
- `team` (string)

### `list_tax_calculator_inputs` (~42 tokens)

List calculator inputs

List leagues, seasons, filing statuses, and team codes accepted by the NHL, NFL, MLB, and NBA tax calculators. Does not use calculation quota.

Output parameters:

- `filing_statuses` (array)
- `leagues` (array)
- `season_ids_by_league` (object)
- `teams` (array)

### `get_profile` (~43 tokens)

Get profile

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.

## Diagnostics

Captured diagnostic sections: TLS, DNSSEC, Authorisation, Transports. The full working is on the page: https://verifymcp.io/servers/com-jocktaxes-claude/mcp-claude#diagnostics

## Score history

- 2026-10-23: 68
- 2026-10-22: 67

## Common questions

### What is the Jock Taxes for Claude MCP server?

Jock Taxes for Claude is an MCP server listed in the public MCP registry as com.jocktaxes/claude. Pro athlete after-tax salary calculators for MLB, NBA, NFL and NHL, built for Claude. This page covers its hosted endpoint (https://jocktaxes.com/mcp/claude).

### Is the Jock Taxes for Claude MCP server safe to use?

Jock Taxes for Claude scores 68 out of 100 on VerifyMCP. That is a record of what we were able to check automatically, not an endorsement. The category breakdown on this page shows every signal behind the number, including the ones we could not confirm.

### What tools does the Jock Taxes for Claude MCP server expose?

Jock Taxes for Claude exposes 15 tools: calculate_nhl_tax, equivalent_nhl_salary, player_movement_nhl, calculate_nfl_tax, equivalent_nfl_salary, and 10 more. Their descriptions and schemas cost roughly 7,034 tokens of context every time the server is loaded.

### Does the Jock Taxes for Claude MCP server require authentication?

No. We connected to Jock Taxes for Claude without credentials and it answered, so anything it exposes is reachable by anyone who knows the address.

### Is the Jock Taxes for Claude MCP server still maintained?

Jock Taxes for Claude is still listed as active in the MCP registry. We last reached this channel on 23 October 2026. Those dates come from our own scans of the registry and the channel itself, not from anything the publisher announced.

## Links

- Remote endpoint: https://jocktaxes.com/mcp/claude
- Website: https://jocktaxes.com/
- Changelog RSS feed: https://verifymcp.io/servers/com-jocktaxes-claude/mcp-claude.xml
- Changelog JSON feed: https://verifymcp.io/servers/com-jocktaxes-claude/mcp-claude.json
- HTML version of this page: https://verifymcp.io/servers/com-jocktaxes-claude/mcp-claude