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Gas Oracle History – Base-Fee Trajectory & Congestion
x402
Gas Oracle History – Base-Fee Trajectory & Congestion is a paid API for AI agents from x402.professorsausages.com, paid per call via x402, $0.003/call, status unknown (last checked 2026-09-13).
Returns historical base-fee trajectory and gas congestion data over up to 1024 blocks for a specified blockchain chain.
Price / call$0.003
Success—
StatusUnknown
How this service works
Base-fee trajectory + congestion over up to 1024 blocks
Output
Returns a structured object containing the chain name, block range (fromBlock/toBlock), number of blocks analyzed, per-block time series of base fees and gas-used ratios, statistical summaries (min/max/avg) of base fee in Gwei, an overall congestion trend indicator, and the fetch timestamp — giving a full historical gas market picture.
Example use cases
Example prompt
“Can you pull the base-fee trajectory and congestion trend for Ethereum over the last 512 blocks so I can see whether gas is rising or falling right now?”
Technical details
Endpoint
GEThttps://x402.professorsausages.com/gas-oracle/:chain/historyWhen to prefer
Choose this endpoint when you need historical gas context — trend direction, congestion patterns, or fee volatility — rather than just the current gas price. It complements the current-gas-market endpoint by providing the trajectory needed for timing optimization, smart contract scheduling, or alerting logic. Best when you need up to 1024 blocks of granular base-fee and gas-used-ratio series data for EVM-compatible chains.
Side effects
- Unsupported chain identifier returns an error or empty result
- Requested block count exceeds 1024 limit — capped or rejected
- Chain RPC unavailable causes fetch failure
- Very recent blocks may not yet be indexed, causing partial series
- Invalid chain slug returns 400-level error
Tags
x402
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