Saylor Innovations Data Desk

Name: Saylor Innovations Data Desk
Price: 0.01 USDC
Availability: InStock

Custom website design, hosting, automation and AI integration for small businesses nationwide. Most builds live in 3 weeks.

DataLiveeip155:8453Exactvia cdp

https://saylorinnovations.com/api/chem/molar-mass

Molar mass of glucoseMolecular weight from a chemicalPercent composition by massGrams to moles calculatorFormula mass of a hydrate

Calls · 30d

This endpoint's own trailing-30-day call count, as published by the upstream catalog and snapshotted daily. 8 snapshots so far.

$15.76

Verified settled volume

1,657 settlements proven x402 by their on-chain EIP-3009 marker.

$0.010

Listed price

As published in the catalog. Always read the live 402 before paying.

Calls · 30d

Upstream's own call count for this endpoint, not ours.

Unique payers · 30d

Last called 2026-10-21 00:56Z

—

Upstream on-chain volume

Reported by the source catalog.

Paid to

0xA2A8dF0f7CaaBEa4e120a2568118f141569fc8aa

The wallet the 402 directs payment to. Its whole payment record — every payer, every chain — is on the merchant page.

Asset 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913

Provider

The payTo wallet does not resolve to a registered ERC-8004 agent. That is not a verdict on the service — most of the catalog is unregistered.

Live 402 challenge

Captured by the enrichment pass, not read just now. Prices can change — always read the 402 the endpoint answers with.

{
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      "extra": {
        "memo": "saylor:datadesk:molar-mass",
        "name": "USD Coin",
        "note": "Base settles through an x402 facilitator. Send payload.signature and payload.authorization (EIP-3009); there is no self-submitted path on this network.",
        "version": "2",
        "facilitatorOnly": true,
        "assetTransferMethod": "eip3009"
      },
      "payTo": "0xA2A8dF0f7CaaBEa4e120a2568118f141569fc8aa",
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        "memo": "saylor:datadesk:molar-mass",
        "name": "USD Coin",
        "note": "Polygon settles through an x402 facilitator. Send payload.signature and payload.authorization (EIP-3009); there is no self-submitted path on this network.",
        "version": "2",
        "facilitatorOnly": true,
        "assetTransferMethod": "eip3009"
      },
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      "extra": {
        "memo": "saylor:datadesk:molar-mass",
        "name": "USD Coin",
        "note": "Arbitrum settles through an x402 facilitator. Send payload.signature and payload.authorization (EIP-3009); there is no self-submitted path on this network.",
        "version": "2",
        "facilitatorOnly": true,
        "assetTransferMethod": "eip3009"
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      "amount": "10000",
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    {
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      "amount": "10000",
      "scheme": "exact",
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      "maxTimeoutSeconds": 120
    },
    {
      "asset": "So11111111111111111111111111111111111111112",
      "extra": {
        "memo": "saylor:datadesk:molar-mass",
        "note": "Native SOL: send lamports with a system transfer, not an SPL transfer. Price is quoted live and this quote expires in 120s.",
        "native": true,
        "session": "eyJhcnRpY2xlSWQiOiJkYXRhZGVzazptb2xhci1tYXNzIiwicmVmZXJlbmNlIjoiNDVnaDRlMVREVGJVeTdEM1A4ckNFeTJoN2ZaMmZpcmZ4eXVFVXozU3RaeHEiLCJyZWNpcGllbnQiOiI3TFNqZnJKZjhmTnNCOFZBOXU3TjNXRW4yNXNtUUxwb2IzU3Z5VXZYYWN5NyIsIm1pbnQiOm51bGwsIm1pbkFtb3VudCI6OTE4NDcsImV4cCI6MTc5MjUxMzA1NjYwM30.Fwmj8PZat4owSo9wMTLAqfFHSS8FD7e7WDfQa0PjbYo",
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      "scheme": "exact",
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  ],
  "resource": {
    "url": "https://saylorinnovations.com/api/chem/molar-mass?formula=CuSO4.5H2O&grams=10",
    "tags": [
      "molar mass of glucose",
      "molecular weight from a chemical",
      "percent composition by mass",
      "grams to moles calculator",
      "formula mass of a hydrate"
    ],
    "iconUrl": "https://saylorinnovations.com/og-image.jpg",
    "mimeType": "application/json",
    "description": "Molar mass of a chemical formula with brackets and hydrates - g/mol, Hill formula, atom counts, mass percent per element and moles from a sample in grams",
    "serviceName": "Saylor Innovations Data Desk"
  },
  "extensions": {
    "tags": [
      "molar mass of glucose",
      "molecular weight from a chemical formula",
      "percent composition by mass",
      "grams to moles calculator",
      "formula mass of a hydrate",
      "how many atoms in a sample"
    ],
    "bazaar": {
      "info": {
        "input": {
          "type": "http",
          "method": "GET",
          "queryParams": {
            "grams": "10",
            "formula": "CuSO4.5H2O"
          }
        },
        "output": {
          "type": "json",
          "example": {
            "note": "Uses IUPAC conventional standard atomic weights; elements with no stable isotope use the mass number of their longest-lived isotope.",
            "sample": {
              "grams": 10,
              "moles": 0.0400517,
              "molecules_or_formula_units": 2.41197e+22
            },
            "source": "IUPAC standard atomic weights",
            "formula": "CuSO4.5H2O",
            "elements": [
              {
                "atoms": 9,
                "element": "O",
                "mass_percent": 57.671,
                "atomic_weight": 15.999,
                "mass_contribution": 143.991
              },
              {
                "atoms": 1,
                "element": "Cu",
                "mass_percent": 25.451,
                "atomic_weight": 63.546,
                "mass_contribution": 63.546
              },
              {
                "atoms": 1,
                "element": "S",
                "mass_percent": 12.841,
                "atomic_weight": 32.06,
                "mass_contribution": 32.06
              },
              {
                "atoms": 10,
                "element": "H",
                "mass_percent": 4.037,
                "atomic_weight": 1.008,
                "mass_contribution": 10.08
              }
            ],
            "total_atoms": 21,
            "hill_formula": "CuH10O9S",
            "molar_mass_g_per_mol": 249.677,
            "has_radioactive_only_elements": false
          }
        }
      },
      "schema": {
        "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",
                "required": [
                  "formula"
                ],
                "properties": {
                  "grams": {
                    "type": "string",
                    "description": "optional sample mass in grams to convert to moles and particles"
                  },
                  "formula": {
                    "type": "string",
                    "description": "Chemical formula with brackets and hydrate dots, e.g. C6H12O6, Ca(OH)2, CuSO4.5H2O"
                  }
                }
              }
            },
            "additionalProperties": false
          },
          "output": {
            "type": "object",
            "required": [
              "type"
            ],
            "properties": {
              "type": {
                "type": "string",
                "const": "json"
              },
              "example": {
                "type": "object",
                "required": [
                  "molar_mass_g_per_mol",
                  "elements"
                ],
                "properties": {
                  "note": {
                    "type": "string",
                    "description": "Caveat or context for reading the result"
                  },
                  "sample": {
                    "type": [
                      "object",
                      "null"
                    ],
                    "properties": {
                      "grams": {
                        "type": [
                          "number",
                          "null"
                        ],
                        "description": "Sample mass supplied"
                      },
                      "moles": {
                        "type": [
                          "number",
                          "null"
                        ],
                        "description": "Moles in the sample"
                      },
                      "molecules_or_formula_units": {
                        "type": [
                          "number",
                          "null"
                        ],
                        "description": "Molecules or formula units"
                      }
                    },
                    "description": "True when this is a fixed sample response"
                  },
                  "source": {
                    "type": "string",
                    "description": "Data source the values come from"
                  },
                  "formula": {
                    "type": "string",
                    "description": "Formula used for the calculation"
                  },
                  "elements": {
                    "type": "array",
                    "items": {
                      "type": "object",
                      "properties": {
                        "atoms": {
                          "type": [
                            "number",
                            "null"
                          ],
                          "description": "Atoms of the element in the formula"
                        },
                        "element": {
                          "type": [
                            "string",
                            "null"
                          ],
                          "description": "Element symbol"
                        },
                        "mass_percent": {
                          "description": "Mass, as a percentage"
                        },
                        "atomic_weight": {
                          "description": "Atomic weight"
                        },
                        "mass_contribution": {
                          "description": "Mass contribution"
                        }
                      }
                    },
                    "description": "Per element: atom count, standard atomic weight, mass contribution and mass percent of the compound"
                  },
                  "total_atoms": {
                    "type": "number",
                    "description": "Total atoms"
                  },
                  "hill_formula": {
                    "type": "string",
                    "description": "Hill formula"
                  },
                  "molar_mass_g_per_mol": {
                    "type": "number",
                    "description": "Molar mass g per mol"
                  },
                  "has_radioactive_only_elements": {
                    "type": "boolean",
                    "description": "True when this has radioactive only elements"
                  }
                }
              }
            }
          }
        }
      }
    },
    "method": "GET",
    "example": {
      "note": "Uses IUPAC conventional standard atomic weights; elements with no stable isotope use the mass number of their longest-lived isotope.",
      "sample": {
        "grams": 10,
        "moles": 0.0400517,
        "molecules_or_formula_units": 2.41197e+22
      },
      "source": "IUPAC standard atomic weights",
      "formula": "CuSO4.5H2O",
      "elements": [
        {
          "atoms": 9,
          "element": "O",
          "mass_percent": 57.671,
          "atomic_weight": 15.999,
          "mass_contribution": 143.991
        },
        {
          "atoms": 1,
          "element": "Cu",
          "mass_percent": 25.451,
          "atomic_weight": 63.546,
          "mass_contribution": 63.546
        },
        {
          "atoms": 1,
          "element": "S",
          "mass_percent": 12.841,
          "atomic_weight": 32.06,
          "mass_contribution": 32.06
        },
        {
          "atoms": 10,
          "element": "H",
          "mass_percent": 4.037,
          "atomic_weight": 1.008,
          "mass_contribution": 10.08
        }
      ],
      "total_atoms": 21,
      "hill_formula": "CuH10O9S",
      "molar_mass_g_per_mol": 249.677,
      "has_radioactive_only_elements": false
    },
    "license": "LicenseRef-Saylor-Agent-Use-1.0",
    "mimeType": "application/json",
    "freshness": "fetched live (cached up to 1 hour for large reference files)",
    "tokenCount": null,
    "inputSchema": {
      "grams": "optional sample mass in grams to convert to moles and particles",
      "formula": "Chemical formula with brackets and hydrate dots, e.g. C6H12O6, Ca(OH)2, CuSO4.5H2O"
    },
    "serviceName": "Saylor Innovations Data Desk",
    "instructions": "STANDARD PATH (works with stock x402 clients): send payload.transaction — a base64 partially-signed Solana transaction — and we route verify/settle through an x402 facilitator that sponsors the fee and submits it. Include the chosen accepts entry as \"accepted\" so we can match terms. ALTERNATIVE PATH (no facilitator): Pick ONE entry from accepts and use the reference and session from THAT entry — each asset has its own. USDC or USDT: send an SPL transfer of the exact amount. Native SOL (asset=So11111111111111111111111111111111111111112, extra.native=true): send that many lamports with a system transfer. Either way include extra.reference as a read-only account (Solana Pay style), then retry with PAYMENT-SIGNATURE: base64({x402Version:2, payload:{session, reference}}). If your client cannot attach a reference, send payload.signature instead (USDC only). SOL amounts are quoted live and expire in 120s; stablecoins do not move. The facilitator path verifies and settles in this request. Only the alternative self-submitted Solana path needs retries while the transfer is indexed (typically 3-4 attempts over 10-20s). On that path, a 402 saying \"payment not found on-chain yet\" means keep retrying.",
    "outputSchema": {
      "type": "object",
      "required": [
        "molar_mass_g_per_mol",
        "elements"
      ],
      "properties": {
        "note": {
          "type": "string"
        },
        "sample": {
          "type": [
            "object",
            "null"
          ],
          "properties": {
            "grams": {
              "type": [
                "number",
                "null"
              ],
              "description": "Sample mass supplied"
            },
            "moles": {
              "type": [
                "number",
                "null"
              ],
              "description": "Moles in the sample"
            }
          }
        },
        "source": {
          "type": "string"
        },
        "formula": {
          "type": "string"
        },
        "elements": {
          "type": "array",
          "items": {
            "type": "object",
            "properties": {
              "atoms": {
                "type": [
                  "number",
                  "null"
                ],
                "description": "Atoms of the element in the formula"
              },
              "element": {
                "type": [
                  "string",
                  "null"
                ],
                "description": "Element symbol"
              }
            }
          },
          "description": "Per element: atom count, standard atomic weight, mass contribution and mass percent of the compound"
        },
        "total_atoms": {
          "type": "number"
        },
        "hill_formula": {
          "type": "string"
        },
        "molar_mass_g_per_mol": {
          "type": "number"
        },
        "has_radioactive_only_elements": {
          "type": "boolean"
        }
      }
    },
    "noPathTemplate": true,
    "settlementModes": [
      "facilitator-transaction",
      "self-submitted-reference"
    ],
    "typicalLatencyMs": 700
  },
  "x402Version": 2
}

Accepts

The payment requirements as published to the catalog. Read the live 402 before paying — a price here is a claim, not a quote.

0.01USDC≈ $0.01 USD

on Base · exact scheme

Pay 0.01 USDC on Base to 0xA2A8…fc8aa. The signed payment is good for 2 minutes.

Paid to: 0xA2A8…fc8aa
USD Coin contract: 0x8335…02913
Payment window: 2 minutes
As published: 10000 smallest units

10000units

on Polygon · exact scheme