Salvages the closed PR #2010 (Mibayy's EVM multi-chain skill) and folds the
existing optional-skills/blockchain/base/ skill into it, so we ship one
unified EVM skill instead of two overlapping ones.
Pulled in from base/:
- 8 missing Base-specific tokens (AERO, DEGEN, TOSHI, BRETT, WELL,
cbETH, cbBTC, wstETH, rETH) added to KNOWN_TOKENS['base'] —
base/ had 11, evm/ only had 3 (USDC/DAI/WETH).
- L1 data-fee pitfall note for rollups (Base, Arbitrum, Optimism, zkSync).
- Batch-size chunking in rpc_batch (Base RPC caps batches at 10 calls
per JSON-RPC request; adding more known tokens tripped that limit
and broke 'wallet --chain base' with a 'list index out of range'
error). Ported the chunking pattern from base/_rpc_batch_chunk.
Latent bugs found and fixed while smoke-testing the merge:
- cmd_multichain and cmd_allowance both iterated KNOWN_TOKENS[chain]
with 'for contract, (symbol, _name) in known.items()' — but the dict
shape is {symbol: contract_str}, not {addr: (sym, name)}. This raised
'too many values to unpack (expected 2)' on every non-zero balance.
Now iterates as 'for symbol, contract in known.items()'.
- Input validation: added is_valid_address / is_valid_txhash /
require_address / require_txhash helpers and wired them into
cmd_wallet, cmd_tx, cmd_token, cmd_activity, cmd_allowance,
cmd_decode, cmd_contract, cmd_multichain. Fails fast with exit 2
on malformed input instead of burning an RPC round-trip on garbage.
Documentation:
- SKILL.md now flags that this skill supersedes optional-skills/blockchain/base.
- Pitfalls expanded for ENS (single-endpoint dependency on
ensideas.com), tx decoding (single-endpoint dependency on
4byte.directory), and rollup L1 fees.
- Regenerated website/docs/user-guide/skills/optional/blockchain/
blockchain-evm.md and removed the old blockchain-base.md page;
catalog updated.
Removed:
- optional-skills/blockchain/base/SKILL.md
- optional-skills/blockchain/base/scripts/base_client.py
- website/docs/user-guide/skills/optional/blockchain/blockchain-base.md
Smoke-tested live against Base mainnet: stats, price, token, wallet
(vitalik.eth — 3.12 ETH + 13.88 USDC + 4.23 DAI + 0.06 WETH on Base)
and allowance (ethereum, 7 unlimited approvals to Uniswap/Permit2).
Original PR #2010 author: Mibayy.
Original base/ skill author: youssefea.
