# Japan Tax Regulatory Events Feed (NTA/CARF)

> Japan Tax Regulatory Events Feed (NTA/CARF) is a paid API for AI agents from api.agentfeeds.jp, paid per call via x402, $0.02/call, status unknown (last checked 2026-09-14).

Returns human-reviewed English-language regulatory event items related to Japan crypto-asset taxation, including NTA guidance, CARF updates, and tax reform announcements.

## Facts

- Endpoint: GET https://api.agentfeeds.jp/v1/reg/events/tax
- Price: $0.02/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-14
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/japan-tax-regulatory-events-feed-nta-carf-65b7c1df
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_I7uMhGcATzQrQmf3VXOrV

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 japan-tax-regulatory-events-feed-nta-carf-65b7c1df
```

Example prompt: Pull the latest Japan crypto tax regulatory events from the NTA and CARF feed — show me the 10 most recent items published since January 1, 2025.

## When to prefer this

Use this endpoint when you need up-to-date, human-reviewed English summaries of Japan tax authority actions affecting crypto assets — particularly NTA guidance, CARF implementation events, or annual tax reform notices. Prefer this over generic news APIs when you need structured, factual regulatory data scoped specifically to Japan tax and crypto, not general financial news.

## Known failure modes

- No events matching the 'since' date filter returns an empty list
- Invalid 'since' date format causes a 400 bad request
- Limit parameter out of range may return an error or be clamped
- Service temporarily unavailable returns 5xx error
- Payment failure (x402) prevents access to the feed

## How this service works

Tax segment of Japan regulatory events: NTA crypto-asset tax treatment, CARF (Crypto-Asset Reporting Framework), tax-reform items. English, human-reviewed. Factual reporting only; not tax advice.

## Output

A list of structured regulatory event records covering Japan crypto-asset tax topics: NTA guidance, CARF reporting framework updates, and tax reform items. Each record includes event details, dates, and factual English-language summaries. Not tax advice.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "$schema": "https://json-schema.org/draft/2020-12/schema",
 "required": [
  "input"
 ],
 "properties": {
  "input": {
   "type": "object",
   "required": [
    "type",
    "method"
   ],
   "properties": {
    "type": {
     "type": "string",
     "const": "http"
    },
    "method": {
     "enum": [
      "GET"
     ],
     "type": "string"
    },
    "queryParams": {
     "type": "object",
     "properties": {
      "limit": {
       "type": "integer"
      },
      "since": {
       "type": "string"
      }
     }
    }
   },
   "additionalProperties": false
  },
  "output": {
   "type": "object",
   "required": [
    "type"
   ],
   "properties": {
    "type": {
     "type": "string"
    },
    "example": {
     "type": "object"
    }
   }
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {
  "data": [
   {
    "en_title": "CARF Corner: Overview of the Crypto-Asset Reporting Framework",
    "source_name": "NTA"
   }
  ],
  "kind": "factual_data",
  "product": "reg.events.tax"
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/japan-tax-regulatory-events-feed-nta-carf-65b7c1df/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from api.agentfeeds.jp](https://www.zero.xyz/host/api.agentfeeds.jp/llms.txt)