Return one bounded current EVM fee-history snapshot for a fixed supported chain
Return one bounded current EVM fee-history snapshot for a fixed supported chain using SolidRPC public JSON-RPC. Forest reports recent base-fee and latest sampled-block priority-fee percentile evidence only; it does not estimate a caller transaction gas limit, simulate, sign or broadcast a transaction, access a wallet, choose a transaction fee for the caller or guarantee an optimal fee. Base mainnet USDC
Answeringour last check, 2026-10-10
1 of 1checks answered this week
919 msmedian answer time
$0.002listed price per call
$0.002price 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
POST https://http--forest-gas-station-mainnet--lcjl27p8lmjs.code.run/chain/gas-snapshot
| Category | Code and developer |
|---|---|
| Provider host | http--forest-gas-station-mainnet--lcjl27p8lmjs.code.run |
| Networks | eip155:8453 |
| Payment schemes | exact |
| Self-reported calls, 30 days | 2 from 2 payers (the provider's figure, not ours) |
Our checks, last 30 days
| Day | Result | HTTP | Asked | Time |
|---|---|---|---|---|
| 2026-10-10 | valid payment request | 402 | $0.002 | 919 ms |
Example input (from the provider)
{
"body": {
"chain": "base"
},
"bodyType": "json",
"method": "POST",
"type": "http"
}
Promised output schema (from the provider)
{
"$schema": "https://json-schema.org/draft/2020-12/schema",
"properties": {
"input": {
"additionalProperties": false,
"properties": {
"body": {
"additionalProperties": false,
"properties": {
"chain": {
"description": "Public chain value used to scope this lookup.",
"enum": [
"ethereum",
"optimism",
"bnb",
"polygon",
"base",
"arbitrum",
"avalanche"
],
"type": "string"
}
},
"required": [
"chain"
],
"type": "object"
},
"bodyType": {
"enum": [
"json",
"form-data",
"text"
],
"type": "string"
},
"method": {
"enum": [
"POST"
],
"type": "string"
},
"type": {
"const": "http",
"type": "string"
}
},
"required": [
"type",
"method",
"bodyType",
"body"
],
"type": "object"
},
"output": {
"properties": {
"example": {
"additionalProperties": false,
"properties": {
"capability": {
"const": "chain.gas-snapshot",
"description": "Public capability value used to scope this lookup."
},
"data": {
"additionalProperties": false,
"description": "Public data value used to scope this lookup.",
"properties": {
"base_fee": {
"additionalProperties": false,
"description": "Public base fee value used to scope this lookup.",
"properties": {
"latest_wei": {
"description": "Public latest wei value used to scope this lookup.",
"pattern": "^(?:0|[1-9]\\d*)$",
"type": "string"
},
"next_wei": {
"description": "Public next wei value used to scope this lookup.",
"pattern": "^(?:0|[1-9]\\d*)$",
"type": "string"
}
},
"required": [
"latest_wei",
"next_wei"
],
"type": "object"
},
"cache_age_ms": {
"description": "Public cache age ms value used to scope this lookup.",
"maximum": 60000,
"minimum": 0,
"type": "integer"
},
"chain": {
"description": "Public chain value used to scope this lookup.",
"enum": [
"ethereum",
"optimism",
"bnb",
"polygon",
"base",
"arbitrum",
"avalanche"
],
"type": "string"
},
"chain_id": {
"description": "Public chain id value used to scope this lookup.",
"minimum": 1,
"type": "integer"
},
"freshness": {
"const": "current_upstream_snapshot",
"description": "Public freshness value used to scope this lookup."
},
"gas_used_ratio": {
"description": "Public gas used ratio value used to scope this lookup.",
"items": {
"maximum": 1,
"minimum": 0,
"type": "number"
},
"maxItems": 4,
"minItems": 4,
"type": "array"
},
"oldest_block": {
"description": "Public oldest block value used to scope this lookup.",
"pattern": "^(?:0|[1-9]\\d*)$",
"type": "string"
},
"priority_fee_percentiles_wei": {
"additionalProperties": false,
"description": "Public priority fee percentiles wei value used to scope this lookup.",
"properties": {
"p25": {
"description": "Public p25 value used to scope this lookup.",
"pattern": "^(?:0|[1-9]\\d*)$",
"type": "string"
},
"p50": {
"description": "Public p50 value used to scope this lookup.",
"pattern": "^(?:0|[1-9]\\d*)$",
"type": "string"
},
"p90": {
"description": "Public p90 value used to scope this lookup.",
"pattern": "^(?:0|[1-9]\\d*)$",
"type": "string"
}
},
"required": [
"p25",
"p50",
"p90"
],
"type": "object"
},
"sampled_blocks": {
"const": 4,
"description": "Public sampled blocks value used to scope this lookup."
},
"source": {
"const": "SolidRPC public EVM JSON-RPC",
"description": "Public source value used to scope this lookup."
},
"source_method": {
"const": "eth_feeHistory",
"description": "Public source method value used to scope this lookup."
},
"transaction_broadcast": {
"const": false