Api Endpoint

Darkly Energized

Catalog of the macro liquidity series x402 serves (Fed net liquidity, global central bank balance sheets), with unit, source and update frequency ($0.01). Daily readings, not weekly: the Fed's weekly H.4.1 balance sheet is merged with the daily Treasury General Account and overnight reverse repo data, so the aggregate liquidity series update each business day instead of once a week.

Open interactive test console

Offering

Provider
darklyenergized.com
Method
GET
Offering type
Api Endpoint
Transport type
http
Category
Api
Delivery
Not provided
Pricing model
Not provided
x402 version
2

Endpoint context

URL
https://darklyenergized.com/api/v1/x402/series
MIME type
application/json
First seen
2026-10-16T01:50:19.913Z
Last seen
Tags
macro-liquidity, fed-balance-sheet, central-banks, macro-indicators, market-data

Payment pricing

x402 payment terms are the authoritative price for calling this endpoint.

Payment option 1
0.01 USDC
Atomic price: 10000 · Network: eip155:8453 · Asset: USDC · Scheme: exact
Raw x402 terms
[
  {
    "scheme": "exact",
    "network": "eip155:8453",
    "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
    "amount": "10000",
    "payTo": "0x540B090cF83D74eaAf12fAAacd1B8f481a1B5501"
  }
]

Observed health

Status
Healthy
Latest latency
56 ms
Average latency
537 ms
HTTP status
402
Last checked
Reachability
100% over 14 checks

Latency is measured to the first response headers. A reachable result does not verify response accuracy or merchant identity.

Input schema

{
  "type": "object",
  "properties": {
    "type": {
      "type": "string",
      "const": "http"
    },
    "method": {
      "type": "string",
      "enum": [
        "GET"
      ]
    },
    "queryParams": {
      "type": "object",
      "properties": {
        "category": {
          "type": "string",
          "description": "Only series in this category"
        },
        "source": {
          "type": "string",
          "description": "Only series from this source"
        },
        "search": {
          "type": "string",
          "description": "Only series whose name or id contains this"
        }
      }
    }
  },
  "required": [
    "type",
    "method"
  ],
  "additionalProperties": false
}

Output schema

{
  "$schema": "https://json-schema.org/draft/2020-12/schema",
  "properties": {
    "input": {
      "additionalProperties": false,
      "properties": {
        "method": {
          "enum": [
            "GET"
          ],
          "type": "string"
        },
        "queryParams": {
          "properties": {
            "category": {
              "description": "Only series in this category",
              "type": "string"
            },
            "search": {
              "description": "Only series whose name or id contains this",
              "type": "string"
            },
            "source": {
              "description": "Only series from this source",
              "type": "string"
            }
          },
          "type": "object"
        },
        "type": {
          "const": "http",
          "type": "string"
        }
      },
      "required": [
        "type",
        "method"
      ],
      "type": "object"
    },
    "output": {
      "properties": {
        "example": {
          "properties": {
            "data": {
              "items": {
                "properties": {
                  "category": {
                    "example": "Central Bank",
                    "type": "string"
                  },
                  "frequency": {
                    "enum": [
                      "daily",
                      "weekly",
                      "monthly",
                      "continuous"
                    ],
                    "example": "weekly",
                    "type": "string"
                  },
                  "id": {
                    "example": "WALCL",
                    "type": "string"
                  },
                  "name": {
                    "example": "Federal Reserve Total Assets",
                    "type": "string"
                  },
                  "source": {
                    "example": "FRED",
                    "type": "string"
                  },
                  "unit": {
                    "example": "USD",
                    "type": "string"
                  }
                },
                "required": [
                  "id",
                  "name",
                  "category",
                  "frequency",
                  "source"
                ],
                "type": "object"
              },
              "type": "array"
            },
            "meta": {
              "properties": {
                "count": {
                  "type": "integer"
                },
                "dataRange": {
                  "properties": {
                    "from": {
                      "format": "date",
                      "type": "string"
                    },
                    "to": {
                      "format": "date",
                      "type": "string"
                    }
                  },
                  "type": "object"
                },
                "freshness": {
                  "properties": {
                    "frequency": {
                      "type": "string"
                    },
                    "isStale": {
                      "type": "boolean"
                    },
                    "lastObservation": {
                      "format": "date",
                      "type": "string"
                    }
                  },
                  "type": "object"
                },
                "pagination": {
                  "properties": {
                    "cursor": {
                      "type": "string"
                    },
                    "hasMore": {
                      "type": "boolean"
                    },
                    "total": {
                      "type": "integer"
                    }
                  },
                  "type": "object"
                },
                "timestamp": {
                  "format": "date-time",
                  "type": "string"
                }
              },
              "required": [
                "timestamp"
              ],
              "type": "object"
            }
          },
          "required": [
            "data",
            "meta"
          ],
          "type": "object"
        },
        "type": {
          "type": "string"
        }
      },
      "required": [
        "type"
      ],
      "type": "object"
    }
  },
  "required": [
    "input"
  ],
  "type": "object"
}