# Bank of Japan Tankan Business Conditions Diffusion Index

> Bank of Japan Tankan Business Conditions Diffusion Index is a paid API for AI agents from api.agentfeeds.jp, paid per call via x402, $0.002/call, status unknown (last checked 2026-09-14).

Returns the Bank of Japan Tankan quarterly business-conditions diffusion index (DI) for large enterprises, segmented by manufacturing or non-manufacturing.

## Facts

- Endpoint: GET https://api.agentfeeds.jp/v1/boj/tankan
- Price: $0.002/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-14
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/bank-of-japan-tankan-business-conditions-diffusion-index-016cf9a5
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_QOM4EMW6RqVGzwEFai9-z

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 bank-of-japan-tankan-business-conditions-diffusion-index-016cf9a5
```

Example prompt: What's the latest Bank of Japan Tankan business-conditions diffusion index for large manufacturing enterprises — can you pull the most recent 8 quarters so I can see the trend?

## When to prefer this

Use this endpoint when you need official Bank of Japan Tankan survey data for large enterprises — specifically the business-conditions diffusion index by manufacturing or non-manufacturing segment. Prefer this over generic Japan economic data sources when you need the canonical Tankan DI figure as published by the BOJ, especially for macro analysis, investor reports, or monitoring Japanese business confidence trends. This endpoint is in the same API family as BOJ rates data on agentfeeds.jp, making it ideal for consistent multi-indicator Japan macro workflows.

## Known failure modes

- Missing required 'segment' query parameter returns a 400 error
- Invalid segment value (not 'manufacturing_large' or 'non_manufacturing_large') returns a 422 validation error
- Limit value outside 1-500 range returns a validation error
- Payment not included or insufficient USDC balance returns a 402 Payment Required response
- Upstream BOJ data not yet updated for latest quarter may return stale or incomplete data

## How this service works

Tankan (Bank of Japan's quarterly Short-Term Economic Survey of Enterprises) business-conditions diffusion index for large enterprises, manufacturing or non-manufacturing, current-quarter assessment. Same source and API family as boj.rates. Factual published data only; not investment advice or a forecast.

## Output

Returns an array of quarterly Tankan business-conditions diffusion index records for the selected large-enterprise segment (manufacturing_large or non_manufacturing_large), each containing the DI value and the corresponding quarter. Default returns 20 most recent quarters; up to 500 available.

## 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",
     "required": [
      "segment"
     ],
     "properties": {
      "limit": {
       "type": "integer",
       "description": "1-500, default 20 (most recent quarters)"
      },
      "segment": {
       "enum": [
        "manufacturing_large",
        "non_manufacturing_large"
       ],
       "type": "string",
       "description": "large-enterprise business-conditions DI, by industry group"
      }
     }
    }
   },
   "additionalProperties": false
  },
  "output": {
   "type": "object",
   "required": [
    "type"
   ],
   "properties": {
    "type": {
     "type": "string"
    },
    "example": {
     "type": "object"
    }
   }
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/bank-of-japan-tankan-business-conditions-diffusion-index-016cf9a5/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)