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docs: update api reference for base/base v0.5.0 #1174

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2047cd8
update api reference for base/base v0.5.0
roethke Mar 3, 2026
183f965
remove non-public rpc methods
roethke Mar 4, 2026
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19 changes: 16 additions & 3 deletions docs/base-chain/flashblocks/api-reference.mdx
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Original file line number Diff line number Diff line change
Expand Up @@ -45,7 +45,12 @@ When called with `"pending"`, returns the current Flashblock — the block activ
#### Returns

<ResponseField name="result" type="object | null">
A block object reflecting the current preconfirmed state. See [eth_getBlockByNumber](/base-chain/reference/json-rpc-api#eth_getblockbynumber) for full field descriptions.
A block object reflecting the current preconfirmed state. See [eth_getBlockByNumber](/base-chain/reference/json-rpc-api#eth_getblockbynumber) for full field descriptions. Flashblocks-specific fields:

- `withdrawals` — Always `[]` for Base (no L2 withdrawals in pending blocks).
- `parentBeaconBlockRoot` — Beacon block root passed from the builder; present on all pending blocks.
- `requestsHash` — Always the empty requests hash (`0xe3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855`).
- `blobGasUsed` — Accurately reflects blob gas consumed by preconfirmed transactions (not zero-padded).
</ResponseField>

<CodeGroup>
Expand All @@ -63,7 +68,12 @@ curl https://sepolia-preconf.base.org \
"result": {
"number": "0x1234",
"hash": "0x...",
"transactions": [...]
"parentHash": "0x...",
"parentBeaconBlockRoot": "0xa4b2c8e1f3d5b7a9c2e4f6d8b0a2c4e6f8d0b2a4c6e8f0d2b4a6c8e0f2d4b6a8",
"withdrawals": [],
"requestsHash": "0xe3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855",
"blobGasUsed": "0x0",
"transactions": ["0x..."]
}
}
```
Expand All @@ -85,6 +95,8 @@ Returns the receipt for a preconfirmed transaction before it is included in a fi

<ResponseField name="result" type="object | null">
A transaction receipt object for the preconfirmed transaction, or `null` if not found. See [eth_getTransactionReceipt](/base-chain/reference/json-rpc-api#eth_gettransactionreceipt) for full field descriptions.

- `blobGasUsed` — Accurately reflects blob gas used by the transaction. Previously returned `0x0` for all preconfirmed transactions; now correctly propagated from the Flashblock.
</ResponseField>

<CodeGroup>
Expand All @@ -102,7 +114,8 @@ curl https://sepolia-preconf.base.org \
"result": {
"transactionHash": "0x...",
"blockNumber": "0x1234",
"status": "0x1"
"status": "0x1",
"blobGasUsed": "0x0"
}
}
```
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