# Central Bank Dark Energy Tracer

> Central Bank Dark Energy Tracer is a paid API for AI agents from darklyenergized.com, paid per call via x402, $0.1/call, status unknown (last checked 2026-10-29).

Returns a time series of aggregated total global central bank liquidity (Dark Energy) across major central banks, with optional date filtering and statistical summaries.

## Facts

- Endpoint: GET https://darklyenergized.com/api/v1/x402/series/cbdet?utm_source=zero.xyz
- Price: $0.1/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-29
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/central-bank-dark-energy-tracer-eca57a87
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_2QjnwczoKwNV5KB_Ml-P_

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 central-bank-dark-energy-tracer-eca57a87
```

Example prompt: Pull me the Central Bank Dark Energy Tracer series from January 1 2020 to today — I want to see how total global central bank liquidity has evolved over that period, up to 1000 data points.

## When to prefer this

Choose this endpoint when you need a single, unified aggregate time series of total global central bank liquidity across all major central banks (Fed, ECB, BoJ, PBoC, BoE, SNB, BoC, BoK), rather than fetching and summing individual central bank series manually. It is ideal for macro analysis, liquidity regime tracking, and building dashboards that need a pre-computed global aggregate. If you need bar-by-bar changes rather than levels, use the companion Dark Energy Oscillator endpoint instead.

## Known failure modes

- Invalid date format for 'from' or 'to' parameters returns a 400 error
- 'limit' value exceeding 10000 is rejected
- Payment not provided or insufficient — 402 Payment Required
- 'after' cursor is invalid or expired — may return empty or unexpected results
- Service may return null values for dates where the computed series has not yet warmed up
- Stale data if underlying central bank sources have not published recent figures

## How this service works

Central Bank Dark Energy Tracer ($0.10): Tracks total global liquidity using a wide range of central bank data.

## Output

Returns a structured object containing the series ID, name, description, category, frequency, and unit, along with an array of date-value pairs representing total aggregated global central bank liquidity over the requested period. Also includes metadata with record count, data range, freshness indicators (staleness flag, last observation date, update frequency), and pagination cursor for fetching subsequent pages. Optionally returns a statistical summary instead of raw data points.

## 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": {
      "to": {
       "type": "string",
       "format": "date",
       "description": "End date (YYYY-MM-DD)"
      },
      "from": {
       "type": "string",
       "format": "date",
       "description": "Start date (YYYY-MM-DD)"
      },
      "after": {
       "type": "string",
       "format": "date",
       "description": "Return points after this date (meta.pagination.cursor)"
      },
      "limit": {
       "type": "integer",
       "default": 500,
       "maximum": 10000,
       "minimum": 1,
       "description": "Most data points to return, oldest first"
      },
      "summary": {
       "type": "boolean",
       "default": false,
       "description": "Return a statistical summary instead of the data points"
      }
     }
    }
   },
   "additionalProperties": false
  },
  "output": {
   "type": "object",
   "required": [
    "type"
   ],
   "properties": {
    "type": {
     "type": "string"
    },
    "example": {
     "type": "object",
     "oneOf": [
      {
       "type": "object",
       "required": [
        "data",
        "meta"
       ],
       "properties": {
        "data": {
         "type": "object",
         "required": [
          "id",
          "name",
          "description",
          "category",
          "frequency",
          "data"
         ],
         "properties": {
          "id": {
           "type": "string"
          },
          "data": {
           "type": "array",
           "items": {
            "type": "object",
            "required": [
             "time",
             "value"
            ],
            "properties": {
             "time": {
              "type": "string",
              "format": "date",
              "example": "2026-02-14"
             },
             "value": {
              "type": [
               "number",
               "null"
              ],
              "example": 1.23,
              "description": "Null where the series has no value on that date (for example while a computed series warms up)."
             }
            }
           }
          
… (truncated)
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/central-bank-dark-energy-tracer-eca57a87/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from darklyenergized.com](https://www.zero.xyz/host/darklyenergized.com/llms.txt)