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feat: use KeyManager.http('https://keystore.tempo.xyz') #32

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Merged
jxom merged 2 commits into from
Jan 20, 2026
Merged

feat: use KeyManager.http('https://keystore.tempo.xyz') #32

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29c0b06
feat: use KeyManager.http('https://keystore.tempo.xyz')
jxom Jan 20, 2026
48247e0
Update wagmi.config.ts
jxom Jan 20, 2026
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135 changes: 2 additions & 133 deletions src/wagmi.config.ts
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Original file line number Diff line number Diff line change
Expand Up @@ -12,141 +12,10 @@ import {
serialize,
webSocket,
} from 'wagmi'
import { type KeyManager, webAuthn } from 'wagmi/tempo'
import { KeyManager, webAuthn } from 'wagmi/tempo'

const TEMPO_ENV = import.meta.env.VITE_TEMPO_ENV

// Helper to convert ArrayBuffer to base64
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@jxom jxom Jan 20, 2026

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wow this was really vibe coded 😆

function arrayBufferToBase64(buffer: ArrayBuffer): string {
const bytes = new Uint8Array(buffer)
let binary = ''
for (let i = 0; i < bytes.byteLength; i++) {
binary += String.fromCharCode(bytes[i])
}
return btoa(binary)
}

// Properly serialize a WebAuthn credential for transmission
function serializeCredential(credential: PublicKeyCredential) {
const response = credential.response as AuthenticatorAttestationResponse
return {
id: credential.id,
rawId: arrayBufferToBase64(credential.rawId),
type: credential.type,
authenticatorAttachment: credential.authenticatorAttachment,
response: {
attestationObject: arrayBufferToBase64(response.attestationObject),
clientDataJSON: arrayBufferToBase64(response.clientDataJSON),
...(response.getAuthenticatorData
? {
authenticatorData: arrayBufferToBase64(
response.getAuthenticatorData(),
),
}
: {}),
},
}
}

// Determine the key-manager URL at runtime (when methods are called, not at config time)
// This avoids SSR/client hydration mismatches
function getKeyManagerBaseUrl() {
if (typeof window !== 'undefined') {
const hostname = window.location.hostname
// Local dev or workers.dev preview
if (hostname === 'localhost' || hostname.endsWith('.workers.dev')) {
return 'https://key-manager.porto.workers.dev/keys'
}
// Production presto/mainnet domains
if (hostname.includes('presto') || hostname.includes('mainnet')) {
return 'https://keys.tempo.xyz/keys'
}
}
// SSR fallback based on env
return TEMPO_ENV === 'presto'
? 'https://keys.tempo.xyz/keys'
: 'https://key-manager-mainnet.porto.workers.dev/keys'
}

function fetchWithTimeout(
url: string,
options: RequestInit = {},
timeoutMs = 10000,
) {
const controller = new AbortController()
const timeout = setTimeout(() => controller.abort(), timeoutMs)
return fetch(url, { ...options, signal: controller.signal }).finally(() =>
clearTimeout(timeout),
)
}

function getKeyManager() {
// Create a lazy key manager that determines the URL at method call time
// This ensures SSR and client use the same config structure
return {
async getChallenge() {
console.log('[KM] getChallenge')
const baseUrl = getKeyManagerBaseUrl()
const response = await fetchWithTimeout(`${baseUrl}/challenge`)
if (!response.ok)
throw new Error(`Failed to get challenge: ${response.statusText}`)
const result = (await response.json()) as {
challenge: `0x${string}`
rp?: { id: string; name: string }
}
console.log('[KM] getChallenge =>', result)
return result
},
async getPublicKey(parameters: { credential: { id: string } }) {
console.log('[KM] getPublicKey', parameters.credential.id)
const baseUrl = getKeyManagerBaseUrl()
const response = await fetchWithTimeout(
`${baseUrl}/${parameters.credential.id}`,
)
if (!response.ok) {
if (response.status === 404) {
throw new Error(
'This passkey is not registered. It may have been created on a different domain or environment. Please sign up to create a new passkey.',
)
}
throw new Error(`Failed to get public key: ${response.statusText}`)
}
const data = (await response.json()) as { publicKey: `0x${string}` }
console.log('[KM] getPublicKey =>', `${data.publicKey?.slice(0, 20)}...`)
return data.publicKey
},
async setPublicKey(parameters: {
credential: PublicKeyCredential
publicKey: `0x${string}`
}) {
console.log(
'[KM] setPublicKey',
parameters.credential.id,
`${parameters.publicKey.slice(0, 20)}...`,
)
const baseUrl = getKeyManagerBaseUrl()
const serializedCredential = serializeCredential(parameters.credential)
const response = await fetchWithTimeout(
`${baseUrl}/${parameters.credential.id}`,
{
method: 'POST',
headers: { 'Content-Type': 'application/json' },
body: JSON.stringify({
credential: serializedCredential,
publicKey: parameters.publicKey,
}),
},
)
if (!response.ok) {
const error = await response.text()
console.error('[KM] setPublicKey err', error)
throw new Error(`Failed to set public key: ${error}`)
}
console.log('[KM] setPublicKey ok')
},
} as ReturnType<typeof KeyManager.http>
}

export type WagmiConfig = ReturnType<typeof getWagmiConfig>

export const getTempoChain = createIsomorphicFn()
Expand Down Expand Up @@ -205,7 +74,7 @@ export function getWagmiConfig() {
chains: [chain, tempoLocalnet],
connectors: [
webAuthn({
keyManager: getKeyManager(),
keyManager: KeyManager.http('https://keys.tempo.xyz'),
rpId: globalThis.location?.hostname,
}),
],
Expand Down