Index onlineMerchant portal
Api Endpoint

Saylor Innovations Dev Tools

ROI calculator - return on investment percent, gain, multiple and annualized return from amount invested and returned

Open interactive test console

Offering

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

Endpoint context

URL
https://saylorinnovations.com/api/calc/roi
MIME type
Not provided
First seen
2026-10-16T01:51:51.176Z
Last seen
Tags
calc, roi, calculator

Website

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
Payment option 2
0.01 USDC
Atomic price: 10000 · Network: solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp · Asset: USDC · Scheme: exact
Raw x402 terms
[
  {
    "scheme": "exact",
    "network": "eip155:8453",
    "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
    "amount": "10000",
    "payTo": "0xA2A8dF0f7CaaBEa4e120a2568118f141569fc8aa"
  },
  {
    "scheme": "exact",
    "network": "solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp",
    "asset": "EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v",
    "amount": "10000",
    "payTo": "7LSjfrJf8fNsB8VA9u7N3WEn25smQLpob3SvyUvXacy7"
  }
]

Observed health

Status
Healthy
Latest latency
534 ms
Average latency
387 ms
HTTP status
402
Last checked
Reachability
100% over 6 checks

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

Input schema

{
  "additionalProperties": false,
  "properties": {
    "method": {
      "enum": [
        "GET",
        "POST",
        "PUT",
        "PATCH",
        "DELETE",
        "HEAD"
      ],
      "type": "string"
    },
    "queryParams": {
      "properties": {
        "invested": {
          "description": "Amount invested",
          "type": "string"
        },
        "returned": {
          "description": "Amount returned",
          "type": "string"
        },
        "years": {
          "description": "optional holding period in years",
          "type": "string"
        }
      },
      "required": [
        "invested",
        "returned"
      ],
      "type": "object"
    },
    "type": {
      "const": "http",
      "type": "string"
    }
  },
  "required": [
    "type",
    "method"
  ],
  "type": "object"
}

Output schema

{
  "$schema": "https://json-schema.org/draft/2020-12/schema",
  "properties": {
    "input": {
      "additionalProperties": false,
      "properties": {
        "method": {
          "enum": [
            "GET",
            "POST",
            "PUT",
            "PATCH",
            "DELETE",
            "HEAD"
          ],
          "type": "string"
        },
        "queryParams": {
          "properties": {
            "invested": {
              "description": "Amount invested",
              "type": "string"
            },
            "returned": {
              "description": "Amount returned",
              "type": "string"
            },
            "years": {
              "description": "optional holding period in years",
              "type": "string"
            }
          },
          "required": [
            "invested",
            "returned"
          ],
          "type": "object"
        },
        "type": {
          "const": "http",
          "type": "string"
        }
      },
      "required": [
        "type",
        "method"
      ],
      "type": "object"
    },
    "output": {
      "properties": {
        "example": {
          "properties": {
            "annualized_return_percent": {
              "description": "Annualized return, as a percentage",
              "type": [
                "number",
                "null"
              ]
            },
            "checked_at": {
              "description": "Time the check was run (UTC)",
              "type": [
                "string",
                "null"
              ]
            },
            "gain": {
              "type": "number"
            },
            "invested": {
              "type": [
                "number",
                "null"
              ]
            },
            "multiple": {
              "type": "number"
            },
            "returned": {
              "description": "Number of items in this response",
              "type": [
                "number",
                "null"
              ]
            },
            "roi_percent": {
              "description": "Roi, as a percentage",
              "type": "number"
            },
            "years": {
              "description": "Years covered",
              "type": [
                "number",
                "null"
              ]
            }
          },
          "required": [
            "gain",
            "roi_percent"
          ],
          "type": "object"
        },
        "type": {
          "const": "json",
          "type": "string"
        }
      },
      "required": [
        "type"
      ],
      "type": "object"
    }
  },
  "required": [
    "input"
  ],
  "type": "object"
}