Saylor Innovations On-Chain Data

Name: Saylor Innovations On-Chain Data
Price: 0.01 USDC
Availability: InStock

Ethereum transaction gas estimate - gas units, gas price and fee in the native coin

TradingLiveeip155:8453Exactvia cdp

https://saylorinnovations.com/api/evm/ethereum/estimate-gas

EvmEthereumEstimate-gasOnchain

Calls · 30d

4→ 0%

This endpoint's own trailing-30-day call count, as published by the upstream catalog and snapshotted daily. 32 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 2026-10-20 06:00Z

—

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.

{
  "error": "Payment required to access this resource.",
  "accepts": [
    {
      "asset": "EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v",
      "extra": {
        "memo": "saylor:evm:estimate-gas:ethereum",
        "session": "eyJhcnRpY2xlSWQiOiJldm06ZXN0aW1hdGUtZ2FzOmV0aGVyZXVtL2VzdGltYXRlLWdhcyIsInJlZmVyZW5jZSI6IjZkdkJGTmFKZExCclR4Umh2U3BrQ0FOemhHbWg3cVVqbzZIcHpyazI4c2V5IiwicmVjaXBpZW50IjoiN0xTamZySmY4Zk5zQjhWQTl1N04zV0VuMjVzbVFMcG9iM1N2eVV2WGFjeTciLCJtaW50IjoiRVBqRldkZDVBdWZxU1NxZU0ycU4xeHp5YmFwQzhHNHdFR0drWnd5VER0MXYiLCJtaW5BbW91bnQiOjIwMDAsImV4cCI6MTc5MDI4ODIzNzMzMX0.o_A_ypKIytJDQlL9LpjUYjk20R39yT7eRpmHmtMx-r0",
        "feePayer": "D6ZhtNQ5nT9ZnTHUbqXZsTx5MH2rPFiBBggX4hY1WePM",
        "reference": "6dvBFNaJdLBrTxRhvSpkCANzhGmh7qUjo6Hpzrk28sey"
      },
      "payTo": "7LSjfrJf8fNsB8VA9u7N3WEn25smQLpob3SvyUvXacy7",
      "amount": "2000",
      "scheme": "exact",
      "network": "solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp",
      "maxTimeoutSeconds": 120
    },
    {
      "asset": "Es9vMFrzaCERmJfrF4H2FYD4KCoNkY11McCe8BenwNYB",
      "extra": {
        "memo": "saylor:evm:estimate-gas:ethereum",
        "session": "eyJhcnRpY2xlSWQiOiJldm06ZXN0aW1hdGUtZ2FzOmV0aGVyZXVtL2VzdGltYXRlLWdhcyIsInJlZmVyZW5jZSI6InNIOTJ5ZGRVZng4MzJuN2E2aGNBMmtpS1BkRU5vck5uajdTcm81V0xTd1YiLCJyZWNpcGllbnQiOiI3TFNqZnJKZjhmTnNCOFZBOXU3TjNXRW4yNXNtUUxwb2IzU3Z5VXZYYWN5NyIsIm1pbnQiOiJFczl2TUZyemFDRVJtSmZyRjRIMkZZRDRLQ29Oa1kxMU1jQ2U4QmVud05ZQiIsIm1pbkFtb3VudCI6MjAwMCwiZXhwIjoxNzkwMjg4MjM3MzMxfQ.HZpZuxGW9ekmbi6J5iUxOUDsnrVxqST0kmYyh0Fb8Do",
        "feePayer": "D6ZhtNQ5nT9ZnTHUbqXZsTx5MH2rPFiBBggX4hY1WePM",
        "reference": "sH92yddUfx832n7a6hcA2kiKPdENorNnj7Sro5WLSwV"
      },
      "payTo": "7LSjfrJf8fNsB8VA9u7N3WEn25smQLpob3SvyUvXacy7",
      "amount": "2000",
      "scheme": "exact",
      "network": "solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp",
      "maxTimeoutSeconds": 120
    },
    {
      "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
      "extra": {
        "memo": "saylor:evm:estimate-gas:ethereum",
        "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": "0xf8A376eBF123D7252cd7b66bcD77A727a4def22f",
      "amount": "2000",
      "scheme": "exact",
      "network": "eip155:8453",
      "maxTimeoutSeconds": 120
    },
    {
      "asset": "0x3c499c542cEF5E3811e1192ce70d8cC03d5c3359",
      "extra": {
        "memo": "saylor:evm:estimate-gas:ethereum",
        "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"
      },
      "payTo": "0xf8A376eBF123D7252cd7b66bcD77A727a4def22f",
      "amount": "2000",
      "scheme": "exact",
      "network": "eip155:137",
      "maxTimeoutSeconds": 120
    },
    {
      "asset": "0xaf88d065e77c8cC2239327C5EDb3A432268e5831",
      "extra": {
        "memo": "saylor:evm:estimate-gas:ethereum",
        "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"
      },
      "payTo": "0xf8A376eBF123D7252cd7b66bcD77A727a4def22f",
      "amount": "2000",
      "scheme": "exact",
      "network": "eip155:42161",
      "maxTimeoutSeconds": 120
    },
    {
      "asset": "So11111111111111111111111111111111111111112",
      "extra": {
        "memo": "saylor:evm:estimate-gas:ethereum",
        "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": "eyJhcnRpY2xlSWQiOiJldm06ZXN0aW1hdGUtZ2FzOmV0aGVyZXVtL2VzdGltYXRlLWdhcyIsInJlZmVyZW5jZSI6Ijdxd2NlaFZHU0dmVTRvb0U5ZU1nM0VhbUVKOTJGNHRSdVI3UmFKelhoQmtaIiwicmVjaXBpZW50IjoiN0xTamZySmY4Zk5zQjhWQTl1N04zV0VuMjVzbVFMcG9iM1N2eVV2WGFjeTciLCJtaW50IjpudWxsLCJtaW5BbW91bnQiOjE2NjQwLCJleHAiOjE3OTAyODgyMzczNjJ9.9Wnz1MklO0vydfd-M-c1uxPqpNOhDtfD1W1tf8rX2uI",
        "reference": "7qwcehVGSGfU4ooE9eMg3EamEJ92F4tRuR7RaJzXhBkZ",
        "solUsdPrice": 116.58,
        "quotedLamports": "17155"
      },
      "payTo": "7LSjfrJf8fNsB8VA9u7N3WEn25smQLpob3SvyUvXacy7",
      "amount": "16640",
      "scheme": "exact",
      "network": "solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp",
      "maxTimeoutSeconds": 120
    }
  ],
  "resource": {
    "url": "https://saylorinnovations.com/api/evm/ethereum/estimate-gas?to=0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913&data=0x313ce567",
    "tags": [
      "evm",
      "ethereum",
      "estimate-gas",
      "onchain"
    ],
    "iconUrl": "https://saylorinnovations.com/og-image.jpg",
    "mimeType": "application/json",
    "description": "Gas Estimate (ethereum) — On-Chain Data",
    "serviceName": "Saylor Innovations On-Chain Lookups (Base + Ethereum)"
  },
  "extensions": {
    "bazaar": {
      "info": {
        "input": {
          "type": "http",
          "method": "GET",
          "queryParams": {
            "to": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
            "data": "0x313ce567"
          }
        },
        "output": {
          "type": "json",
          "example": {
            "gas": 21000,
            "chain": "base",
            "error": null,
            "native": "ETH",
            "reverted": false,
            "est_fee_native": "0.000000126",
            "gas_price_gwei": 0.006
          }
        }
      },
      "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",
                  "POST",
                  "PUT",
                  "PATCH",
                  "DELETE",
                  "HEAD"
                ],
                "type": "string"
              },
              "queryParams": {
                "type": "object",
                "properties": {
                  "to": {
                    "type": "string",
                    "description": "0x target (query)"
                  },
                  "data": {
                    "type": "string",
                    "description": "optional 0x calldata (query)"
                  }
                }
              }
            },
            "additionalProperties": false
          },
          "output": {
            "type": "object",
            "required": [
              "type"
            ],
            "properties": {
              "type": {
                "type": "string",
                "const": "json"
              },
              "example": {
                "type": "object",
                "required": [
                  "chain",
                  "reverted"
                ],
                "properties": {
                  "gas": {
                    "type": [
                      "number",
                      "null"
                    ]
                  },
                  "chain": {
                    "type": "string"
                  },
                  "error": {
                    "type": [
                      "string",
                      "null"
                    ]
                  },
                  "native": {
                    "type": "string"
                  },
                  "reverted": {
                    "type": "boolean"
                  },
                  "est_fee_native": {
                    "type": [
                      "string",
                      "null"
                    ]
                  },
                  "gas_price_gwei": {
                    "type": [
                      "number",
                      "null"
                    ]
                  }
                }
              }
            }
          }
        }
      }
    },
    "method": "GET",
    "example": {
      "gas": 21000,
      "chain": "base",
      "error": null,
      "native": "ETH",
      "reverted": false,
      "est_fee_native": "0.000000126",
      "gas_price_gwei": 0.006
    },
    "license": "LicenseRef-Saylor-Agent-Use-1.0",
    "mimeType": "application/json",
    "freshness": "live chain head on every request",
    "freeSample": "https://saylorinnovations.com/api/evm/sample/balance",
    "tokenCount": null,
    "inputSchema": {
      "to": "0x target (query)",
      "data": "optional 0x calldata (query)",
      "from": "optional 0x sender (query)",
      "chain": "base | ethereum | arbitrum | optimism | polygon | bsc (path)",
      "value": "optional wei, decimal or 0x (query)"
    },
    "serviceName": "Saylor Innovations On-Chain Lookups (Base + Ethereum)",
    "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": [
        "chain",
        "reverted"
      ],
      "properties": {
        "gas": {
          "type": [
            "number",
            "null"
          ]
        },
        "chain": {
          "type": "string"
        },
        "error": {
          "type": [
            "string",
            "null"
          ]
        },
        "native": {
          "type": "string"
        },
        "reverted": {
          "type": "boolean"
        },
        "est_fee_native": {
          "type": [
            "string",
            "null"
          ]
        },
        "gas_price_gwei": {
          "type": [
            "number",
            "null"
          ]
        }
      }
    },
    "noPathTemplate": true,
    "settlementModes": [
      "facilitator-transaction",
      "self-submitted-reference"
    ],
    "typicalLatencyMs": 400
  },
  "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