# Global Econ X402 – UK Population Indicator with AI Commentary

> Global Econ X402 – UK Population Indicator with AI Commentary is a paid API for AI agents from global-econ-x402-production.up.railway.app, paid per call via x402, $0.005/call, status down (last checked 2026-09-15).

Returns the current population economic indicator for the United Kingdom (GBR) along with AI-generated commentary, via x402 micropayment.

## Facts

- Endpoint: GET https://global-econ-x402-production.up.railway.app/world/population/GBR
- Price: $0.005/call
- Payment: x402
- Status: down
- Last checked: 2026-09-15
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/global-econ-x402-uk-population-indicator-with-ai-commentary-2d91b8e0
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_VagCUxTTZa5TdbR8DCS2R

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 global-econ-x402-uk-population-indicator-with-ai-commentary-2d91b8e0
```

Example prompt: Can you pull the latest population indicator for the United Kingdom and give me the AI commentary that comes with it?

## When to prefer this

Use this endpoint when you need a quick, AI-interpreted population figure specifically for the United Kingdom (GBR) and want the data enriched with natural-language commentary rather than raw numbers alone. Prefer this over generic data APIs when the combined indicator+commentary format is valuable and the $0.005 micropayment cost is acceptable.

## Known failure modes

- Missing X-PAYMENT header returns 402 with payment requirements and accepted asset details
- Invalid or expired payment token returns payment error
- Unsupported country code may return 404 or empty data
- Network/service unavailability on Railway returns 5xx

## How this service works

Economic indicator with AI commentary

## Output

Returns the population economic indicator value for GBR (United Kingdom) along with AI-generated commentary interpreting or contextualizing the figure, delivered after a $0.005 USDC x402 micropayment.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "required": [
  "country_code"
 ],
 "properties": {
  "country_code": {
   "type": "string"
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "object",
 "required": [
  "_x402",
  "error",
  "accepts",
  "x402Version",
  "_paymentRequired",
  "_wwwAuthenticate"
 ],
 "properties": {
  "_x402": {
   "type": "boolean"
  },
  "error": {
   "type": "string"
  },
  "accepts": {
   "type": "array",
   "items": {
    "type": "object",
    "required": [
     "asset",
     "extra",
     "payTo",
     "scheme",
     "network",
     "mimeType",
     "resource",
     "description",
     "outputSchema",
     "maxAmountRequired",
     "maxTimeoutSeconds"
    ],
    "properties": {
     "asset": {
      "type": "string"
     },
     "extra": {
      "type": "object",
      "required": [
       "name",
       "version"
      ],
      "properties": {
       "name": {
        "type": "string"
       },
       "version": {
        "type": "string"
       }
      }
     },
     "payTo": {
      "type": "string"
     },
     "scheme": {
      "type": "string"
     },
     "network": {
      "type": "string"
     },
     "mimeType": {
      "type": "string"
     },
     "resource": {
      "type": "string"
     },
     "description": {
      "type": "string"
     },
     "outputSchema": {
      "type": "object",
      "required": [
       "input"
      ],
      "properties": {
       "input": {
        "type": "object",
        "required": [
         "type",
         "method",
         "discoverable"
        ],
        "properties": {
         "type": {
          "type": "string"
         },
         "method": {
          "type": "string"
         },
         "discoverable": {
          "type": "boolean"
         }
        }
       }
      }
     },
     "maxAmountRequired": {
      "type": "string"
     },
     "maxTimeoutSeconds": {
      "type": "number"
     }
    }
   }
  },
  "x402Version": {
   "type": "number"
  },
  "_paymentRequired": {
   "type": "boolean"
  },
  "_wwwAuthenticate": {
   "type": "null"
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/global-econ-x402-uk-population-indicator-with-ai-commentary-2d91b8e0/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from global-econ-x402-production.up.railway.app](https://www.zero.xyz/host/global-econ-x402-production.up.railway.app/llms.txt)