# DataNexusAI OECD Series Data Endpoint

> DataNexusAI OECD Series Data Endpoint is a paid API for AI agents from api.datanexusai.org, paid per call via x402, $0.01/call, status unknown (last checked 2026-10-01).

Retrieves OECD time-series economic observations (e.g. CLI, leading indicators) for a given series code and geography, paid via USDC micropayment.

## Facts

- Endpoint: GET https://api.datanexusai.org/api/economic/oecd/series/%7Bseries_code%7D?utm_source=zero.xyz
- Price: $0.01/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-01
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/datanexusai-oecd-series-data-endpoint-6a1d4507
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_CUmYXkgT871iplABFQCRZ

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 datanexusai-oecd-series-data-endpoint-6a1d4507
```

Example prompt: Pull the OECD composite leading indicator series for the USA — use series code OECD_CLI_USA and give me the last 60 observations.

## When to prefer this

Choose this endpoint when you need structured OECD time-series data (such as composite leading indicators or other OECD statistical series) by series code, and are willing to pay $0.01 USDC per call via x402 micropayment. Prefer this over scraping OECD's own website when you need clean JSON output ready for downstream analysis, or when integrating economic data into an automated agent workflow that requires programmatic access without managing API credentials beyond USDC payments.

## Known failure modes

- Invalid or unknown series_code returns a 404 or empty observations array
- Exceeding rate limits or unpaid micropayment returns a 402 Payment Required response
- Network timeout or upstream OECD data unavailability may return a 503
- limit parameter outside acceptable range may be ignored or return an error
- Malformed path parameter (e.g. unencoded special characters) returns a 400 Bad Request

## How this service works

Public data API for SEBRA payments, PTP road accidents, Hearthstone cards, EU agri-food prices, and trade/market analytics. Paid data endpoints use x402 (USDC micropayments). Docs and discovery endpoints are free.

Machine-readable discovery: `https://api.datanexusai.org/openapi.json`, `https://api.datanexusai.org/llms.txt`, `https://api.datanexusai.org/.well-known/x402`.

Human docs: `/docs` and `/api/`.

## Output

Returns a JSON object containing the geographic identifier, endpoint label, series code, and an array of time-stamped observations each with a period (e.g. '2024-01') and a numeric value representing the OECD indicator reading for that month.

## 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"
    },
    "pathParams": {
     "type": "object"
    },
    "queryParams": {
     "type": "object",
     "properties": {
      "limit": {
       "type": "integer",
       "example": 120,
       "description": "Max observations (default 120)."
      }
     }
    }
   },
   "additionalProperties": false
  },
  "output": {
   "type": "object",
   "required": [
    "type"
   ],
   "properties": {
    "type": {
     "type": "string"
    },
    "example": {
     "type": "object"
    }
   }
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {
  "geo": "USA",
  "endpoint": "oecd_series",
  "series_code": "OECD_CLI_USA",
  "observations": [
   {
    "value": 99.1,
    "period": "2024-01"
   }
  ]
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/datanexusai-oecd-series-data-endpoint-6a1d4507/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from api.datanexusai.org](https://www.zero.xyz/host/api.datanexusai.org/llms.txt)