{
  "x402Version": 2,
  "id": 71627,
  "slug": "saylorinnovations-api-radiation-decay",
  "resource": "https://saylorinnovations.com/api/radiation/decay",
  "description": "Radioactive decay calculator from initial amount, half-life and elapsed time - remaining amount and decay constant",
  "type": "http",
  "serviceName": "Saylor Innovations  Radioactive",
  "mimeType": "application/json",
  "resourceType": "API",
  "accepts": [
    {
      "scheme": "exact",
      "network": "eip155:8453",
      "payTo": "0xA2A8dF0f7CaaBEa4e120a2568118f141569fc8aa",
      "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
      "amount": "10000",
      "amountUsd": 0.01,
      "maxTimeoutSeconds": 120
    },
    {
      "scheme": "exact",
      "network": "eip155:137",
      "payTo": "0xA2A8dF0f7CaaBEa4e120a2568118f141569fc8aa",
      "asset": "0x3c499c542cEF5E3811e1192ce70d8cC03d5c3359",
      "amount": "10000",
      "amountUsd": 0.01,
      "maxTimeoutSeconds": 120
    },
    {
      "scheme": "exact",
      "network": "eip155:42161",
      "payTo": "0xA2A8dF0f7CaaBEa4e120a2568118f141569fc8aa",
      "asset": "0xaf88d065e77c8cC2239327C5EDb3A432268e5831",
      "amount": "10000",
      "amountUsd": 0.01,
      "maxTimeoutSeconds": 120
    },
    {
      "scheme": "exact",
      "network": "solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp",
      "payTo": "7LSjfrJf8fNsB8VA9u7N3WEn25smQLpob3SvyUvXacy7",
      "asset": "EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v",
      "amount": "10000",
      "amountUsd": 0.01,
      "maxTimeoutSeconds": 120
    },
    {
      "scheme": "exact",
      "network": "solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp",
      "payTo": "7LSjfrJf8fNsB8VA9u7N3WEn25smQLpob3SvyUvXacy7",
      "asset": "Es9vMFrzaCERmJfrF4H2FYD4KCoNkY11McCe8BenwNYB",
      "amount": "10000",
      "amountUsd": 0.01,
      "maxTimeoutSeconds": 120
    },
    {
      "scheme": "exact",
      "network": "solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp",
      "payTo": "7LSjfrJf8fNsB8VA9u7N3WEn25smQLpob3SvyUvXacy7",
      "asset": "So11111111111111111111111111111111111111112",
      "amount": "95877",
      "amountUsd": 0.01,
      "maxTimeoutSeconds": 120
    }
  ],
  "outputSchema": {
    "type": "object",
    "properties": {
      "initial_amount": {
        "type": "number",
        "description": "Initial amount"
      },
      "half_life": {
        "type": "number",
        "description": "Half life"
      },
      "elapsed": {
        "type": "number"
      },
      "unit": {
        "type": "string",
        "description": "Unit of measure"
      },
      "half_lives_elapsed": {
        "type": "number",
        "description": "Half lives elapsed"
      },
      "remaining_amount": {
        "type": "number",
        "description": "Remaining amount"
      },
      "decayed_amount": {
        "type": "number",
        "description": "Decayed amount"
      },
      "remaining_fraction": {
        "type": "number",
        "description": "Remaining fraction"
      },
      "remaining_percent": {
        "type": "number",
        "description": "Remaining, as a percentage"
      },
      "decay_constant_per_unit": {
        "type": "number",
        "description": "Decay constant per unit"
      },
      "mean_lifetime": {
        "type": "number",
        "description": "Mean lifetime"
      },
      "formula": {
        "type": "string",
        "description": "Formula used for the calculation"
      },
      "scope_note": {
        "type": "string",
        "description": "What this data covers and what it leaves out"
      }
    },
    "required": [
      "initial_amount",
      "half_life",
      "elapsed",
      "unit",
      "half_lives_elapsed",
      "remaining_amount",
      "decayed_amount",
      "remaining_percent",
      "scope_note"
    ]
  },
  "extensions": {
    "bazaar": {
      "info": {
        "input": {
          "type": "http",
          "method": "GET",
          "queryParams": {
            "elapsed": "90",
            "half_life": "30",
            "initial": "100",
            "unit": "years"
          }
        },
        "output": {
          "type": "json",
          "example": {
            "initial_amount": 100,
            "half_life": 30,
            "elapsed": 90,
            "unit": "years",
            "half_lives_elapsed": 3,
            "remaining_amount": 12.5,
            "decayed_amount": 87.5,
            "remaining_percent": 12.5,
            "scope_note": "Pure exponential-decay arithmetic only; not safety advice."
          }
        }
      },
      "schema": {
        "$schema": "https://json-schema.org/draft/2020-12/schema",
        "type": "object",
        "properties": {
          "input": {
            "type": "object",
            "properties": {
              "type": {
                "type": "string",
                "const": "http"
              },
              "method": {
                "type": "string",
                "enum": [
                  "GET"
                ]
              },
              "queryParams": {
                "type": "object",
                "properties": {
                  "elapsed": {
                    "type": "string",
                    "description": "required finite number greater than or equal to 0 (query)"
                  },
                  "half_life": {
                    "type": "string",
                    "description": "required finite number greater than 0 (query)"
                  },
                  "initial": {
                    "type": "string",
                    "description": "required finite number greater than 0 (query)"
                  },
                  "unit": {
                    "type": "string",
                    "description": "required unit label, 1-24 letters such as seconds, days, or years; use consistently (query)"
                  }
                },
                "required": [
                  "elapsed",
                  "half_life",
                  "initial",
                  "unit"
                ]
              }
            },
            "required": [
              "type",
              "method"
            ],
            "additionalProperties": false
          },
          "output": {
            "type": "object",
            "properties": {
              "type": {
                "type": "string",
                "const": "json"
              },
              "example": {
                "type": "object",
                "properties": {
                  "initial_amount": {
                    "type": "number",
                    "description": "Initial amount"
                  },
                  "half_life": {
                    "type": "number",
                    "description": "Half life"
                  },
                  "elapsed": {
                    "type": "number"
                  },
                  "unit": {
                    "type": "string",
                    "description": "Unit of measure"
                  },
                  "half_lives_elapsed": {
                    "type": "number",
                    "description": "Half lives elapsed"
                  },
                  "remaining_amount": {
                    "type": "number",
                    "description": "Remaining amount"
                  },
                  "decayed_amount": {
                    "type": "number",
                    "description": "Decayed amount"
                  },
                  "remaining_fraction": {
                    "type": "number",
                    "description": "Remaining fraction"
                  },
                  "remaining_percent": {
                    "type": "number",
                    "description": "Remaining, as a percentage"
                  },
                  "decay_constant_per_unit": {
                    "type": "number",
                    "description": "Decay constant per unit"
                  },
                  "mean_lifetime": {
                    "type": "number",
                    "description": "Mean lifetime"
                  },
                  "formula": {
                    "type": "string",
                    "description": "Formula used for the calculation"
                  },
                  "scope_note": {
                    "type": "string",
                    "description": "What this data covers and what it leaves out"
                  }
                },
                "required": [
                  "initial_amount",
                  "half_life",
                  "elapsed",
                  "unit",
                  "half_lives_elapsed",
                  "remaining_amount",
                  "decayed_amount",
                  "remaining_percent",
                  "scope_note"
                ]
              }
            },
            "required": [
              "type"
            ]
          }
        },
        "required": [
          "input"
        ]
      }
    }
  },
  "tags": [
    "radiation",
    "radioactive-decay",
    "half-life",
    "calculator"
  ],
  "sourceHost": "saylorinnovations.com",
  "lastUpdated": "2026-10-26T22:14:01.803Z",
  "quality": {},
  "metadata": {
    "serviceName": "Saylor Innovations  Radioactive",
    "method": "GET",
    "mimeType": "application/json",
    "inputSchema": {
      "type": "object",
      "properties": {
        "elapsed": {
          "type": "string",
          "description": "required finite number greater than or equal to 0 (query)"
        },
        "half_life": {
          "type": "string",
          "description": "required finite number greater than 0 (query)"
        },
        "initial": {
          "type": "string",
          "description": "required finite number greater than 0 (query)"
        },
        "unit": {
          "type": "string",
          "description": "required unit label, 1-24 letters such as seconds, days, or years; use consistently (query)"
        }
      },
      "required": [
        "elapsed",
        "half_life",
        "initial",
        "unit"
      ]
    },
    "exampleResponse": {
      "initial_amount": 100,
      "half_life": 30,
      "elapsed": 90,
      "unit": "years",
      "half_lives_elapsed": 3,
      "remaining_amount": 12.5,
      "decayed_amount": 87.5,
      "remaining_percent": 12.5,
      "scope_note": "Pure exponential-decay arithmetic only; not safety advice."
    },
    "parameterLocation": "query",
    "extensions": {
      "bazaar": {
        "info": {
          "input": {
            "type": "http",
            "method": "GET",
            "queryParams": {
              "elapsed": "90",
              "half_life": "30",
              "initial": "100",
              "unit": "years"
            }
          },
          "output": {
            "type": "json",
            "example": {
              "initial_amount": 100,
              "half_life": 30,
              "elapsed": 90,
              "unit": "years",
              "half_lives_elapsed": 3,
              "remaining_amount": 12.5,
              "decayed_amount": 87.5,
              "remaining_percent": 12.5,
              "scope_note": "Pure exponential-decay arithmetic only; not safety advice."
            }
          }
        },
        "schema": {
          "$schema": "https://json-schema.org/draft/2020-12/schema",
          "type": "object",
          "properties": {
            "input": {
              "type": "object",
              "properties": {
                "type": {
                  "type": "string",
                  "const": "http"
                },
                "method": {
                  "type": "string",
                  "enum": [
                    "GET"
                  ]
                },
                "queryParams": {
                  "type": "object",
                  "properties": {
                    "elapsed": {
                      "type": "string",
                      "description": "required finite number greater than or equal to 0 (query)"
                    },
                    "half_life": {
                      "type": "string",
                      "description": "required finite number greater than 0 (query)"
                    },
                    "initial": {
                      "type": "string",
                      "description": "required finite number greater than 0 (query)"
                    },
                    "unit": {
                      "type": "string",
                      "description": "required unit label, 1-24 letters such as seconds, days, or years; use consistently (query)"
                    }
                  },
                  "required": [
                    "elapsed",
                    "half_life",
                    "initial",
                    "unit"
                  ]
                }
              },
              "required": [
                "type",
                "method"
              ],
              "additionalProperties": false
            },
            "output": {
              "type": "object",
              "properties": {
                "type": {
                  "type": "string",
                  "const": "json"
                },
                "example": {
                  "type": "object",
                  "properties": {
                    "initial_amount": {
                      "type": "number",
                      "description": "Initial amount"
                    },
                    "half_life": {
                      "type": "number",
                      "description": "Half life"
                    },
                    "elapsed": {
                      "type": "number"
                    },
                    "unit": {
                      "type": "string",
                      "description": "Unit of measure"
                    },
                    "half_lives_elapsed": {
                      "type": "number",
                      "description": "Half lives elapsed"
                    },
                    "remaining_amount": {
                      "type": "number",
                      "description": "Remaining amount"
                    },
                    "decayed_amount": {
                      "type": "number",
                      "description": "Decayed amount"
                    },
                    "remaining_fraction": {
                      "type": "number",
                      "description": "Remaining fraction"
                    },
                    "remaining_percent": {
                      "type": "number",
                      "description": "Remaining, as a percentage"
                    },
                    "decay_constant_per_unit": {
                      "type": "number",
                      "description": "Decay constant per unit"
                    },
                    "mean_lifetime": {
                      "type": "number",
                      "description": "Mean lifetime"
                    },
                    "formula": {
                      "type": "string",
                      "description": "Formula used for the calculation"
                    },
                    "scope_note": {
                      "type": "string",
                      "description": "What this data covers and what it leaves out"
                    }
                  },
                  "required": [
                    "initial_amount",
                    "half_life",
                    "elapsed",
                    "unit",
                    "half_lives_elapsed",
                    "remaining_amount",
                    "decayed_amount",
                    "remaining_percent",
                    "scope_note"
                  ]
                }
              },
              "required": [
                "type"
              ]
            }
          },
          "required": [
            "input"
          ]
        }
      }
    },
    "examples": [
      {
        "label": "Unpaid discovery call",
        "method": "GET",
        "url": "https://saylorinnovations.com/api/radiation/decay?initial=100&half_life=30&elapsed=90&unit=years",
        "expectedStatus": 402
      }
    ],
    "cacheTtlSeconds": 0,
    "capabilities": [],
    "noAccountRequired": true,
    "noApiKeyRequired": true,
    "sideEffects": "Paid calls settle the advertised payment; see the provider contract for execution behavior.",
    "payment": {
      "protocol": "x402",
      "settlement": "direct-to-provider"
    },
    "provider": {
      "name": "Saylor Innovations",
      "host": "saylorinnovations.com",
      "manifestUrl": "https://saylorinnovations.com/.well-known/x402.json"
    }
  },
  "liveness": {
    "reliability": null
  },
  "verified": true,
  "featured": false,
  "provider": {
    "host": "saylorinnovations.com",
    "manifest_name": "Saylor Innovations Knowledge Base",
    "source": "submitted",
    "source_manifest_url": "https://saylorinnovations.com/.well-known/x402.json",
    "submitted_at": "2026-10-26T05:52:02.113Z"
  },
  "exampleResponse": {
    "initial_amount": 0,
    "half_life": 0,
    "elapsed": 0,
    "unit": "string",
    "half_lives_elapsed": 0,
    "remaining_amount": 0,
    "decayed_amount": 0,
    "remaining_fraction": 0,
    "remaining_percent": 0,
    "decay_constant_per_unit": 0,
    "mean_lifetime": 0,
    "formula": "string",
    "scope_note": "string"
  }
}