Gas price forecast for 16 EVM chains
Gas price forecast for 16 EVM chains: next-block base fee, 3- and 6-block projection, 10-block trend, a suggested max fee and send-now-or-wait advice.
Not tested: has real-world effectsour last check, 2026-10-21
0 of 0checks answered this week
n/amedian answer time
$0.01listed price per call
n/aprice it asked us
Paid test badge: not yet. The checks above are free: we call the tool without paying and read the payment request it sends back. The Verified badge needs paid calls whose answers match the promised output, and nobody can buy a badge.
Endpoint
GET https://saylorinnovations.com/api/chain/gas-forecast
| Category | Market data |
|---|---|
| Provider host | saylorinnovations.com |
| Networks | eip155:137, eip155:42161, eip155:8453, solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp |
| Payment schemes | exact |
| Self-reported calls, 30 days | 1 from 1 payers (the provider's figure, not ours) |
Our checks, last 30 days
We never call tools that send, buy, move money or file anything, not even without paying.
Example input (from the provider)
{
"method": "GET",
"queryParams": {
"chain": "ethereum"
},
"type": "http"
}
Promised output schema (from the provider)
{
"$schema": "https://json-schema.org/draft/2020-12/schema",
"properties": {
"input": {
"additionalProperties": false,
"properties": {
"method": {
"enum": [
"GET"
],
"type": "string"
},
"queryParams": {
"properties": {
"chain": {
"description": "chain name (ethereum, base, arbitrum, optimism, polygon, bsc, avalanche, gnosis, linea, scroll, mantle, blast, sonic, celo, berachain, unichain) or chain id",
"type": "string"
}
},
"required": [
"chain"
],
"type": "object"
},
"type": {
"const": "http",
"type": "string"
}
},
"required": [
"type",
"method"
],
"type": "object"
},
"output": {
"properties": {
"example": {
"properties": {
"advice": {
"description": "plain-language send or wait suggestion",
"type": "string"
},
"base_fee_change_pct_10_blocks": {
"description": "base fee change over 10 blocks, percent",
"type": "number"
},
"base_fee_trend_10_blocks": {
"description": "rising, falling or flat",
"type": "string"
},
"chain": {
"description": "the chain name that was queried",
"type": "string"
},
"chain_id": {
"description": "EIP-155 chain id of that network",
"type": "number"
},
"in_3_blocks_gwei": {
"description": "projected base fee 3 blocks ahead",
"type": "number"
},
"in_6_blocks_gwei": {
"description": "projected base fee 6 blocks ahead",
"type": "number"
},
"next_block_base_fee_gwei": {
"description": "base fee of the next block, gwei",
"type": "number"
},
"note": {
"description": "plain-language reading of the result, including units",
"type": "string"
},
"recent_avg_fullness": {
"description": "average block fullness over the last 5 blocks",
"type": "number"
},
"source": {
"description": "where the data was read from",
"type": "string"
},
"suggested_max_fee_gwei": {
"description": "suggested max fee per gas, gwei",
"type": "number"
},
"suggested_priority_fee_gwei": {
"description": "node-suggested tip, gwei",
"type": "number"
}
},
"required": [
"chain",
"chain_id",
"next_block_base_fee_gwei",
"in_3_blocks_gwei",
"in_6_blocks_gwei",
"base_fee_trend_10_blocks",
"advice",
"note",
"source"
],
"type": "object"
},
"type": {
"const": "json",
"type": "string"
}
},
"required": [
"type"
],
"type": "object"
}
},
"required": [
"input"
],
"type": "object"
}