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docs: add BASE_NODE_L1_* to Quick Start; fix reth/README devnet→sepolia typo#1091

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docs: add BASE_NODE_L1_* to Quick Start; fix reth/README devnet→sepolia typo#1091
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0xAxiom:fix/docs-reth-sepolia-quickstart

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@0xAxiom 0xAxiom commented May 20, 2026

What

Two related documentation fixes:

1. Quick Start missing BASE_NODE_L1_* variables (closes #1073)

The Quick Start (step 3) only showed OP_NODE_L1_ETH_RPC / OP_NODE_L1_BEACON, but since reth + base-consensus is now the default client, operators also need to set BASE_NODE_L1_ETH_RPC and BASE_NODE_L1_BEACON. These variables exist in .env.mainnet and .env.sepolia but were invisible in the README — a new operator following the Quick Start would end up with base-consensus unable to connect to L1.

2. reth/README.md says "devnet" instead of "sepolia" (closes #1075)

The Flashblocks setup note reads "mainnet and devnet" but the correct network name is sepolia (matching the actual .env.sepolia filename and wss://sepolia.flashblocks.base.org/ws endpoint).

Changes

  • README.md Quick Start step 3: added BASE_NODE_L1_ETH_RPC + BASE_NODE_L1_BEACON under a base-consensus comment block
  • README.md Configuration > Required Settings: added a base-consensus L1 config block mirroring the existing op-node block
  • reth/README.md: "devnet" → "sepolia"

- Quick Start step 3 now lists BASE_NODE_L1_ETH_RPC and BASE_NODE_L1_BEACON
  alongside the OP_NODE_* vars; reth (base-consensus) is the default client
  and silently fails to connect to L1 without them (closes base#1073)
- Configuration > Required Settings adds a base-consensus L1 block mirroring
  the op-node block so the docs stay in sync with .env.mainnet/.env.sepolia
- reth/README.md Setup section: "devnet" corrected to "sepolia" (closes base#1075)
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