Gas conditions for 7 EVM chains
Gas conditions for 7 EVM chains: base fee, trend, congestion, priority tips, suggested max fee and USD cost of a transfer, approval, swap and mint.
Not tested: has real-world effectsour last check, 2026-10-21
0 of 0checks answered this week
n/amedian answer time
$0.01listed price per call
n/aprice it asked us
Paid test badge: not yet. The checks above are free: we call the tool without paying and read the payment request it sends back. The Verified badge needs paid calls whose answers match the promised output, and nobody can buy a badge.
Endpoint
GET https://saylorinnovations.com/api/gas/preflight
| Category | Everything else |
|---|---|
| Provider host | saylorinnovations.com |
| Networks | eip155:137, eip155:42161, eip155:8453, solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp |
| Payment schemes | exact |
| Self-reported calls, 30 days | 2 from 2 payers (the provider's figure, not ours) |
Our checks, last 30 days
We never call tools that send, buy, move money or file anything, not even without paying.
Example input (from the provider)
{
"method": "GET",
"queryParams": {
"chain": "base"
},
"type": "http"
}
Promised output schema (from the provider)
{
"$schema": "https://json-schema.org/draft/2020-12/schema",
"properties": {
"input": {
"additionalProperties": false,
"properties": {
"method": {
"enum": [
"GET"
],
"type": "string"
},
"queryParams": {
"properties": {
"chain": {
"description": "optional: ethereum, base (default), arbitrum, optimism, polygon, bsc or avalanche",
"type": "string"
}
},
"type": "object"
},
"type": {
"const": "http",
"type": "string"
}
},
"required": [
"type",
"method"
],
"type": "object"
},
"output": {
"properties": {
"example": {
"properties": {
"base_fee_gwei": {
"description": "Base fee per gas in gwei",
"type": "number"
},
"base_fee_trend": {
"description": "Base fee trend",
"type": "string"
},
"block_age_seconds": {
"description": "Seconds since the latest block",
"type": "number"
},
"block_number": {
"description": "Block number",
"type": "number"
},
"chain": {
"description": "Blockchain the data is for",
"type": "string"
},
"congestion": {
"type": "string"
},
"cost_estimates": {
"description": "Cost estimates",
"type": "object"
},
"gas_used_ratio_avg": {
"description": "Gas used ratio avg",
"type": [
"number",
"null"
]
},
"l2_note": {
"description": "L2 note",
"type": [
"string",
"null"
]
},
"native_price_usd": {
"description": "Native price, in US dollars",
"type": [
"number",
"null"
]
},
"native_symbol": {
"description": "Native symbol",
"type": "string"
},
"note": {
"description": "Caveat or context for reading the result",
"type": "string"
},
"priority_fee_gwei": {
"description": "Priority fee, in gwei",
"type": "object"
},
"source": {
"description": "Data source the values come from",
"type": "string"
},
"suggested_max_fee_gwei": {
"description": "Suggested max fee, in gwei",
"type": "object"
}
},
"required": [
"chain",
"native_symbol",
"block_number",
"base_fee_gwei",
"congestion",
"priority_fee_gwei",
"suggested_max_fee_gwei",
"cost_estimates",
"note",
"source"
],
"type": "object"
},
"type": {
"const": "json",
"type": "string"
}
},
"required": [
"type"
],
"type": "object"
}
},
"required": [
"input"
],
"type": "object"
}