Polygon
Polygon
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Polygon
El plan gratuito cubre proyectos personales. El pago por uso escala sin necesidad de tarjeta.
eth_feeHistory returns historical base fees, gas-used ratios, and priority-fee percentiles for a window of recent Polygon PoS blocks. Polygon implements EIP-1559, so fees are paid in MATIC as a base fee plus a priority tip, and this method gives you the raw data to estimate both. Because Polygon produces a block roughly every 2 seconds, a window of even a few hundred blocks still only spans minutes — ideal for a responsive fee oracle. Query https://polygon.therpc.io/YOUR_API_KEY (chain ID 137, 0x89) with a block count, a newest block, and the percentiles you want sampled.
maxFeePerGas and maxPriorityFeePerGas from recent percentile data for type-2 Polygon transactions.gasUsedRatio climb toward 1.reward values to land in competitive blocks.| # | Nombre | Tipo | Requerido | Descripción |
|---|---|---|---|---|
| 1 | blockCount | string | number | Sí | Number of blocks to include in the history window. Most providers cap this at 1024. |
| 2 | newestBlock | string | Sí | The most recent block to include in the window.Predeterminado: latest |
| 3 | rewardPercentiles | number[] | No | Array of percentile values (0–100) at which to sample priority fees from each block. Pass an empty array to omit reward data. |
| Tipo | Descripción |
|---|---|
| object | Object with: `oldestBlock` (hex, starting block of the window), `baseFeePerGas` (array of hex wei — one per block plus the next predicted value), `gasUsedRatio` (array of floats 0–1 per block), `reward` (array of arrays — per-block percentile priority fees in hex wei; only present when `rewardPercen |
Try it live in the Polygon playground.
| Código | Mensaje | Causa |
|---|---|---|
-32602 | invalid argument | blockCount is 0, out of range, or rewardPercentiles contains values outside 0–100. |
-32000 | block not found | `newestBlock` references a block that does not exist on this node. |
baseFeePerGas array has one more element than the block window: the last entry is the node's prediction for the next Polygon block, not a confirmed value.blockCount produces a big response; most providers cap it at 1024, and capping yourself at 100–200 blocks per call keeps payloads small and oracle updates fast.Parámetros
Hex or decimal integer, e.g. "0xa" or 10
"latest" | "safe" | "finalized" | hex block number
Array of percentile values (0–100) at which to sample priority fees from each block. Pass an empty array to omit reward data.