# OECD Composite Leading Indicators by Area

> OECD Composite Leading Indicators by Area is a paid API for AI agents from data.greeneris.io, paid per call via x402, $0.01/call, status unknown (last checked 2026-09-14).

Returns the latest OECD Composite Leading Indicator (amplitude-adjusted) observations for a given geographic area, with cycle signal classification (e.g. expansion).

## Facts

- Endpoint: GET https://data.greeneris.io/v1/global/leading-indicators
- Price: $0.01/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-14
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/oecd-composite-leading-indicators-by-area-b73daad3
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_zmZTWhOAJtx4NhfP54fsF

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 oecd-composite-leading-indicators-by-area-b73daad3
```

Example prompt: Pull the last 12 months of OECD composite leading indicators for the USA and tell me what the current cycle signal is — expansion, slowdown, or contraction.

## When to prefer this

Use this endpoint when you need official OECD composite leading indicator data with cycle signal classification (expansion/contraction) for a specific country or regional aggregate (USA, DEU, G20, etc.), especially in AI agent workflows that require pay-per-call macro data without account setup. Prefer over general statistics APIs when you need amplitude-adjusted CLI values and a pre-computed cycle signal label from an authoritative source.

## Known failure modes

- Invalid or unsupported OECD area code returns an error or empty result
- n parameter out of 1-36 range may return a validation error
- HTTP 402 returned before payment — must pay USDC via x402 protocol before data is served
- No data available for a given area or period returns empty observations array
- Network timeout for upstream OECD SDMX data source

## How this service works

OECD Composite Leading Indicator (amplitude-adjusted, long-term trend = 100), the reference early signal of business-cycle turning points. Query: ?area=USA&n=6 (area codes: USA, DEU, FRA, GBR, JPN, G20...; n = last N monthly values, 1-36). Returns monthly observations plus a computed cycle_signal (expansion/downturn/slowdown/recovery). Published ~mid-month by OECD; 24h cache.

## Output

A JSON object containing the area code, area name, indicator type (composite_leading_indicator_amplitude_adjusted), trend level (baseline 100), cycle signal classification (e.g. 'expansion'), and an array of up to 36 monthly observations each with a period string (YYYY-MM) and numeric value. Source attribution is included.

## 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",
      "HEAD",
      "DELETE"
     ],
     "type": "string"
    },
    "queryParams": {
     "type": "object",
     "properties": {
      "n": {
       "type": "integer",
       "default": 6,
       "description": "Last N monthly observations (1-36)"
      },
      "area": {
       "type": "string",
       "default": "USA",
       "description": "OECD area code (e.g. USA, DEU, G20)"
      }
     }
    }
   },
   "additionalProperties": false
  },
  "output": {
   "type": "object",
   "required": [
    "type"
   ],
   "properties": {
    "type": {
     "type": "string"
    },
    "example": {
     "type": "object"
    }
   }
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {
  "area": "USA",
  "source": "OECD Composite Leading Indicators, sdmx.oecd.org (CC BY 4.0)",
  "area_name": "United States",
  "frequency": "monthly",
  "indicator": "composite_leading_indicator_amplitude_adjusted",
  "trend_level": 100,
  "cycle_signal": "expansion",
  "observations": [
   {
    "value": 100.7588,
    "period": "2026-05"
   },
   {
    "value": 100.8024,
    "period": "2026-06"
   }
  ]
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/oecd-composite-leading-indicators-by-area-b73daad3/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from data.greeneris.io](https://www.zero.xyz/host/data.greeneris.io/llms.txt)