Rerouted (renamed, verified). The GitHub user or repository was renamed. The tag is still there, at the new name. The Lamdera package server serves a copy recovered from https://github.com/IntrepidShape/elm-web3.
What we checked: The repo moved to github.com/IntrepidShape/elm-web3 and tag 1.0.0 is there; its commit 9d919244f65e is from 2026-05-09 11:48 UTC, before the version was published (2026-05-09 11:58 UTC); elm.json is byte-identical to package.elm-lang.org's; the exposed modules match docs.json; the zip's SHA-1 is not the published one (GitHub's zip no longer comes out byte for byte the same), so the contents were checked instead.
The Lamdera compiler uses this copy and prints a one-line notice saying so. elm itself fails to download this version.
Details · package.elm-lang.org's zip: https://github.com/intrepidshape/elm-web3/zipball/1.0.0/
Type-safe contract write calls (eth_sendTransaction).
Build a write call, encode it for the JS port, optionally estimate gas first.
-- Non-payable: approve
approve : Address -> BigInt -> WriteCall
approve spender amount =
writeCall
{ contract = tokenAddress
, method = "approve"
, args = [ Encode.address spender, Encode.uint256 amount ]
}
-- Payable: buy
buy : BigInt -> Wei -> WriteCall
buy minTokens value =
payableCall
{ contract = routerAddress
, method = "buy"
, args = [ Encode.uint256 minTokens ]
, value = value
}Create a non-payable write call.
Create a payable write call with a value.
Set a gas limit.
Encode a write call as an estimateGas command for the JS port.
estimateGas myWriteCall
-- sends { tag: "estimateGas", contract: ..., method: ..., args: ..., value: ... }
-- JS responds with { tag: "gasEstimate", gas: "21000" }Encode a contract deployment for submission via the port.
Encode a raw signed transaction for broadcast via the port.
A write call to a contract.