Aegis now integrates with the two dapp-wallet APIs the wider ecosystem
actually uses — MetaMask-style window.ethereum for Ethereum, Phantom-style
window.solana for Solana — plus BTC signet as a third Bitcoin network
alongside mainnet + testnet3.
- wallet-inject.js: adds a main-world bridge, installed via a one-shot
<script textContent=…> appended to <head> and immediately removed.
Electron's contextBridge shallow-copies args and strips methods, which
means BCH- and Tron-shaped params (plain data) work in the isolated
world but Solana's wallet-adapter dapps — which pass @solana/web3.js
Transaction objects and expect .serializeMessage()/.addSignature() to
fire on them — need code that lives in the same world as the dapp.
Bridge talks back to the isolated world via window.postMessage on a
namespaced envelope (aegisTag = "aegis-" + addonId), which forwards to
theseus.invoke. Same pattern MetaMask + Phantom use.
- window.ethereum (EIP-1193): request({method, params}), on(),
removeListener(), chainId, networkVersion, selectedAddress. Handles
eth_requestAccounts, eth_accounts, eth_chainId, net_version,
personal_sign, eth_sign, eth_sendTransaction, wallet_switchEthereumChain
(rejects with "use the Aegis picker"), wallet_addEthereumChain
(rejects, chains come from Settings), wallet_get/requestPermissions.
Every other eth_*/net_*/web3_* method passes through to the wallet's
configured RPC via a new eth.rpc handler. EIP-6963 announceProvider
event fires so wagmi / RainbowKit / any 6963-aware dapp discovers
Aegis alongside MetaMask instead of racing for window.ethereum.
- window.solana (wallet-adapter shape): connect(), disconnect(),
publicKey (with toString/toBase58/toBytes/equals — the PublicKey
interface dapps check), signMessage(u8) → {publicKey, signature: u8},
signTransaction(tx) → mutates + returns the same tx with the
signature added, signAndSendTransaction(tx) → returns {signature: txid},
signAllTransactions([tx]), request({method, params}). isPhantom flag
set true so dapps that gate on it pick us. on/off events for connect
/ disconnect / accountChanged.
- Handlers in index.js registerPageMessages: eth.requestAccounts,
eth.personalSign, eth.sendTransaction, eth.switchChain, eth.rpc,
sol.connect, sol.signMessage, sol.signAndSend. Every write path is
per-origin gated + goes through api.approvalModal with the wallet
label + network in the row list so the user always knows which
Aegis wallet is about to sign.
- Signet added to chain-btc.js — signet shares testnet3's address
format and SLIP-44 coin type (BIP-325 only changed consensus/signing),
so bitcoinjs-lib.networks.testnet handles derivation unchanged. Only
the electrum pool (aranguren + wakiyamap) + explorer (mempool.space
/signet) + faucet (signetfaucet.com) differ. Registered as
btc:signet in COINS with per-network coinType lookup.
Known limits (follow-ups in the same shape as existing chains):
- SOL signAndSendTransaction is single-signer only; dapps that combine
the wallet's sig with co-signer sigs need the wire assembled on the
dapp side.
- ETH eth_signTypedData_v4 (EIP-712) is not wired — the handler set
covers personal_sign only.
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