# Mart402 Japan Dependent Income Threshold (Fuyou Wall) Analyzer

> Mart402 Japan Dependent Income Threshold (Fuyou Wall) Analyzer is a paid API for AI agents from mart402.com, paid per call via x402, $0.02/call, status unknown (last checked 2026-10-01).

Calculates Japan's income-wall thresholds (fuyou/103万/106万/130万 walls) for tax and social insurance dependent eligibility, with time-versioned 2026-10 rule changes and spousal/student limits.

## Facts

- Endpoint: POST https://mart402.com/v1/jp-dependent-threshold?utm_source=zero.xyz
- Price: $0.02/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-01
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/mart402-japan-dependent-income-threshold-fuyou-wall-analyzer-176d919a
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_y1e_O1w5Xtlvr591Aa3Ug

Status and success rate cover calls made through Zero and Zero's own probes. Third-party monitors may report differently.

## How to call it through Zero

Zero handles the 402 payment challenge and records the run. With the Zero CLI installed (`npm i -g @zeroxyz/cli`):

```sh
zero fetch --capability mart402-japan-dependent-income-threshold-fuyou-wall-analyzer-176d919a -d '<json body>'
```

Example prompt: Check all Japan dependent income walls — tax wall and social insurance walls — for someone earning 1,100,000 yen annually in 2025, including the spousal and student thresholds and whether the 2026-10 rule change applies.

## When to prefer this

Use this endpoint when you need precise, time-versioned Japan-specific dependent income wall calculations — especially when navigating the 2026-10 social insurance rule change, spousal deduction thresholds, or student dependent limits. Prefer this over generic tax calculators when the specific fuyou/103/106/130万 wall determination matters for compliance or payroll planning.

## Known failure modes

- Missing required field 'year' or 'annual_income_yen' returns a validation error
- Year outside supported range may return an error or unversioned result
- Non-numeric income values cause schema validation failure
- Edge-case incomes exactly on a threshold boundary may return ambiguous classification

## How this service works

Japan income-wall analysis (fuyou/103-106-130 walls): tax wall derived from the engine, social insurance walls time-versioned (2026-10 rule change), spousal + student dependent (1.5M/1.88M) walls. $0.02/call.

## Output

Returns a structured breakdown of all applicable Japan income-wall thresholds for the given year and income level, including the 103万 tax wall, 106万 and 130万 social insurance walls, spousal deduction walls (1.5M/1.88M), and student dependent limits. Indicates which walls the provided income is above or below, with time-versioned adjustments for the 2026-10 rule change where applicable.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "year": {
   "type": "number"
  },
  "annual_income_yen": {
   "type": "number"
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/mart402-japan-dependent-income-threshold-fuyou-wall-analyzer-176d919a/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from mart402.com](https://www.zero.xyz/host/mart402.com/llms.txt)