{
  "x402Version": 2,
  "id": 57604,
  "slug": "57604",
  "resource": "https://api.sitecheck-api.workers.dev/api/gas",
  "description": "Gas prices on Base (default), Ethereum, Arbitrum, Optimism, Polygon or Solana, or chain=all for every chain at once: the base fee and slow, normal and fast priority fees, the latest block, and what a plain transfer and an ERC-20 transfer cost in native token and USD. EVM figures come from eth_feeHistory over the last 20 blocks; Solana from recent prioritization fees. Cached 15 seconds.",
  "type": "http",
  "serviceName": "SiteCheck",
  "resourceType": "Market Data",
  "accepts": [
    {
      "scheme": "exact",
      "network": "eip155:8453",
      "payTo": "0xb8491F953e6860D3b5840b73c60883Ff099ceAfA",
      "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
      "amount": "1000",
      "amountUsd": 0.001,
      "maxTimeoutSeconds": 300
    },
    {
      "scheme": "exact",
      "network": "solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp",
      "payTo": "J8vnmBx4pS1X7UUBTfz1yWBKiw69Dj2yRGRHDaXBRdhR",
      "asset": "EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v",
      "amount": "1000",
      "amountUsd": 0.001,
      "maxTimeoutSeconds": 300
    },
    {
      "scheme": "exact",
      "network": "eip155:5042",
      "payTo": "0xa4751fCAa83c9669cfe507bb6807507729839be3",
      "asset": "0x3600000000000000000000000000000000000000",
      "amount": "1000",
      "maxTimeoutSeconds": 300
    }
  ],
  "outputSchema": {
    "properties": {
      "example": {
        "type": "object"
      },
      "type": {
        "type": "string"
      }
    },
    "required": [
      "type"
    ],
    "type": "object"
  },
  "extensions": {
    "bazaar": {
      "info": {
        "input": {
          "method": "GET",
          "queryParams": {
            "chain": "base"
          },
          "type": "http"
        },
        "output": {
          "example": {
            "baseFeeGwei": 0.005,
            "block": {
              "number": 52564066,
              "time": "2026-10-13T18:51:19.000Z"
            },
            "chain": "base",
            "checkedAt": "2026-10-13T18:51:20.121Z",
            "costBasis": "base fee + normal priority fee",
            "disclaimer": "Information only, not financial advice.",
            "erc20Transfer": {
              "gasUnits": 65000,
              "native": 3.9e-7,
              "usd": 0.000977
            },
            "nativePriceUsd": 2505.595,
            "nativeSymbol": "ETH",
            "priorityFeeGwei": {
              "fast": 0.011537,
              "normal": 0.001,
              "slow": 0.001
            },
            "source": "base JSON-RPC (eth_feeHistory over the last 20 blocks, median of each reward percentile), Coinbase spot price",
            "transfer": {
              "gasUnits": 21000,
              "native": 1.3e-7,
              "usd": 0.000316
            }
          },
          "type": "json"
        }
      },
      "schema": {
        "$schema": "https://json-schema.org/draft/2020-12/schema",
        "properties": {
          "input": {
            "additionalProperties": false,
            "properties": {
              "method": {
                "enum": [
                  "GET"
                ],
                "type": "string"
              },
              "queryParams": {
                "properties": {
                  "chain": {
                    "description": "base (default), ethereum, arbitrum, optimism, polygon, solana or all",
                    "type": "string"
                  }
                },
                "required": [],
                "type": "object"
              },
              "type": {
                "const": "http",
                "type": "string"
              }
            },
            "required": [
              "type",
              "method"
            ],
            "type": "object"
          },
          "output": {
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              },
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            },
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            ],
            "type": "object"
          }
        },
        "required": [
          "input"
        ],
        "type": "object"
      }
    }
  },
  "tags": [
    "gas",
    "gas prices",
    "fees",
    "base",
    "ethereum",
    "bazaar"
  ],
  "sourceHost": "api.sitecheck-api.workers.dev",
  "lastUpdated": "2026-10-13T20:35:30.39Z",
  "quality": {
    "calls30d": 1,
    "uniquePayers30d": 1,
    "lastCalledAt": "2026-10-13T20:35:30.246Z"
  },
  "metadata": {
    "serviceName": "SiteCheck",
    "extensions": {
      "bazaar": {
        "info": {
          "input": {
            "method": "GET",
            "queryParams": {
              "chain": "base"
            },
            "type": "http"
          },
          "output": {
            "example": {
              "baseFeeGwei": 0.005,
              "block": {
                "number": 52564066,
                "time": "2026-10-13T18:51:19.000Z"
              },
              "chain": "base",
              "checkedAt": "2026-10-13T18:51:20.121Z",
              "costBasis": "base fee + normal priority fee",
              "disclaimer": "Information only, not financial advice.",
              "erc20Transfer": {
                "gasUnits": 65000,
                "native": 3.9e-7,
                "usd": 0.000977
              },
              "nativePriceUsd": 2505.595,
              "nativeSymbol": "ETH",
              "priorityFeeGwei": {
                "fast": 0.011537,
                "normal": 0.001,
                "slow": 0.001
              },
              "source": "base JSON-RPC (eth_feeHistory over the last 20 blocks, median of each reward percentile), Coinbase spot price",
              "transfer": {
                "gasUnits": 21000,
                "native": 1.3e-7,
                "usd": 0.000316
              }
            },
            "type": "json"
          }
        },
        "schema": {
          "$schema": "https://json-schema.org/draft/2020-12/schema",
          "properties": {
            "input": {
              "additionalProperties": false,
              "properties": {
                "method": {
                  "enum": [
                    "GET"
                  ],
                  "type": "string"
                },
                "queryParams": {
                  "properties": {
                    "chain": {
                      "description": "base (default), ethereum, arbitrum, optimism, polygon, solana or all",
                      "type": "string"
                    }
                  },
                  "required": [],
                  "type": "object"
                },
                "type": {
                  "const": "http",
                  "type": "string"
                }
              },
              "required": [
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                "method"
              ],
              "type": "object"
            },
            "output": {
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                "example": {
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                },
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              },
              "required": [
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              ],
              "type": "object"
            }
          },
          "required": [
            "input"
          ],
          "type": "object"
        }
      }
    }
  },
  "liveness": {
    "reliability": null
  },
  "verified": false,
  "featured": false,
  "provider": {
    "host": "api.sitecheck-api.workers.dev",
    "manifest_name": "api.sitecheck-api.workers.dev",
    "source": "cdp-mirror",
    "source_manifest_url": "https://api.cdp.coinbase.com/platform/v2/x402/discovery/resources",
    "submitted_at": "2026-10-14T01:15:01.050Z"
  },
  "exampleResponse": {
    "example": {},
    "type": "string"
  }
}