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Forest Gas Station – EVM Gas Snapshot
x402
Forest Gas Station – EVM Gas Snapshot is a paid API for AI agents from http--forest-gas-station-mainnet--lcjl27p8lmjs.code.run, paid per call via x402, $0.002/call, status unknown (last checked 2026-10-22).
Returns a bounded current EVM fee-history snapshot (base fee and priority-fee percentiles) for a specified supported chain via SolidRPC public JSON-RPC
Price / call$0.002
Success—
StatusUnknown
How this service works
Machine-readable contract for active Forest paid capabilities. Unsigned paid calls return HTTP 402 with a PAYMENT-REQUIRED x402 challenge.
Output
Returns a bounded fee-history snapshot for the requested EVM chain, including recent base-fee data and sampled priority-fee percentile evidence from the latest blocks. Does not include gas limit estimation, transaction simulation, wallet access, or fee optimization recommendations.
Example use cases
Pre-transaction fee check on Ethereum
“Before I submit my Ethereum transaction, can you pull the latest gas snapshot so I can see what the current base fee and priority fee percentiles look like?”
Cross-chain gas comparison for DeFi routing
“I need the current gas fee snapshots for both Arbitrum and Optimism — can you fetch them so I can figure out which chain is cheaper to bridge on right now?”
Gas monitoring for automated on-chain workflow
“Can you check the current gas fee snapshot on Base mainnet and tell me the latest base fee and priority fee evidence so I can decide whether now is a good time to trigger my on-chain action?”
Technical details
Endpoint
POSThttps://http--forest-gas-station-mainnet--lcjl27p8lmjs.code.run/chain/gas-snapshot?utm_source=zero.xyzWhen to prefer
Use this endpoint when you need a quick, current read of EVM gas fee conditions (base fee and priority fee percentiles) for one of seven supported chains (Ethereum, Optimism, BNB, Polygon, Base, Arbitrum, Avalanche) without needing gas limit estimation, transaction simulation, or wallet integration. Prefer this over raw RPC calls when you want a clean, pre-packaged fee-history snapshot via a pay-per-call API with no infrastructure setup.
Side effects
- Unsupported chain value returns validation error
- SolidRPC upstream unavailability causes request failure
- HTTP 402 returned if payment header is missing or malformed
- Stale snapshot if upstream node is temporarily lagging
- Network timeout if the JSON-RPC provider is slow
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| chain | string | Public chain value used to scope this lookup. |
Output
Schema · Response
{
"type": "json",
"example": {
"ok": true,
"data": {
"chain": "ethereum",
"source": "SolidRPC public EVM JSON-RPC",
"base_fee": {
"next_wei": "1",
"latest_wei": "1"
},
"chain_id": 1,
"freshness": "current_upstream_snapshot",
"cache_age_ms": 0,
"oldest_block": "1",
"source_method": "eth_feeHistory",
"gas_used_ratio": [
0,
0,
0,
0
],
"sampled_blocks": 4,
"transaction_broadcast": false,
"transaction_simulated": false,
"priority_fee_percentiles_wei": {
"p25": "1",
"p50": "1",
"p90": "1"
}
},
"meta": {
"cache": "miss",
"provider": "solidrpc-public",
"checked_at": "2026-01-01T00:00:00.000Z",
"duration_ms": 0
},
"version": "1",
"capability": "chain.gas-snapshot"
}
}Tags
x402
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