feat: integrate Tempo chain as second-class EVM citizen

.beads/pr-context.jsonl

@@ -0,0 +1 @@
+{"id":"shapeshiftWeb-xfmg","title":"shepherd pr 12194 ci fixes","status":"closed","priority":2,"issue_type":"task","owner":"17035424+gomesalexandre@users.noreply.github.com","created_at":"2026-03-20T01:27:08.617052+01:00","created_by":"gomes","updated_at":"2026-03-20T01:33:31.6828+01:00","closed_at":"2026-03-20T01:33:31.6828+01:00","close_reason":"Closed"}

.env

@@ -354,6 +354,7 @@ VITE_FEATURE_YIELDS_PAGE=true
 VITE_YIELD_XYZ_API_KEY=06903960-e442-4870-81eb-03ff3ad4c035
 VITE_FEATURE_YIELD_MULTI_ACCOUNT=true
 VITE_TON_NODE_URL=https://toncenter.com/api/v2/jsonRPC
+VITE_TEMPO_NODE_URL=
 VITE_FEATURE_STONFI_SWAP=true
 VITE_FEATURE_TON=true
 VITE_FEATURE_EARN_TAB=true
@@ -377,3 +378,4 @@ VITE_AGENTIC_SERVER_BASE_URL=https://shapeshiftossagentic-server-production.up.r
 
 # MetaMask native multichain (BTC/SOL without snaps)
 VITE_FEATURE_MM_NATIVE_MULTICHAIN=false
+VITE_FEATURE_TEMPO=false

.env.development

@@ -94,6 +94,7 @@ VITE_SOLANA_NODE_URL=https://dev-api.solana.shapeshift.com/api/v1/jsonrpc
 VITE_JITO_BLOCK_ENGINE_URL=https://mainnet.block-engine.jito.wtf
 VITE_STARKNET_NODE_URL=https://rpc.starknet.lava.build
 VITE_TRON_NODE_URL=https://api.trongrid.io
+VITE_TEMPO_NODE_URL=https://rpc.tempo.xyz
 
 # midgard
 VITE_THORCHAIN_MIDGARD_URL=https://dev-api.thorchain.shapeshift.com/midgard/v2
@@ -155,5 +156,6 @@ VITE_FEATURE_EARN_TAB=true
 VITE_FEATURE_YIELD_MULTI_ACCOUNT=true
 VITE_FEATURE_AGENTIC_CHAT=true
 VITE_FEATURE_MM_NATIVE_MULTICHAIN=true
+VITE_FEATURE_TEMPO=true
 # VITE_AGENTIC_SERVER_BASE_URL=http://localhost:4111
 VITE_AGENTIC_SERVER_BASE_URL=https://shapeshiftossagentic-server-production.up.railway.app

chains/tempo.json

@@ -0,0 +1,30 @@
+{
+  "camelName": "tempo",
+  "pascalName": "Tempo",
+  "upperName": "TEMPO",
+  "chainId": 4217,
+  "viemChainName": "tempo",
+  "nativeSymbol": "USD",
+  "nativeName": "USD",
+  "nativePrecision": 18,
+  "isNativeEth": false,
+  "color": "#22C55E",
+  "networkIconUrl": "https://assets.relay.link/icons/4217/light.png",
+  "nativeIconUrl": "https://assets.relay.link/icons/4217/light.png",
+  "explorerUrl": "https://explore.tempo.xyz",
+  "explorerAddressLink": "https://explore.tempo.xyz/address/",
+  "explorerTxLink": "https://explore.tempo.xyz/receipt/",
+  "rpcUrl": "https://rpc.tempo.xyz",
+  "fallbackRpcUrls": ["https://rpc.tempo.xyz"],
+  "coingeckoPlatform": "tempo",
+  "wrappedNativeAddress": null,
+  "relatedAssetKey": null,
+  "shortName": "USD",
+  "swappers": {
+    "relay": { "supported": true, "relayChainId": 4217 },
+    "across": { "supported": false },
+    "portals": { "supported": false },
+    "zerion": { "supported": false },
+    "yieldxyz": { "supported": false }
+  }
+}

e2e/fixtures/tempo-chain-regression.yaml

@@ -0,0 +1,91 @@
+name: Tempo Chain Regression
+description: >
+  Regression test for Tempo second-class EVM chain integration. Verifies the
+  chain is discoverable/selectable in the trade modal, Tempo tradeable assets
+  and icons render correctly, Tempo account connection works, and small
+  cross-chain + same-chain Tempo swap flows succeed. Also verifies a Tempo
+  token self-send works and fee display is sane. Tempo has no normal native gas
+  coin UX - supported Tempo tokens are the practical fee/tradeable assets.
+route: /trade
+depends_on:
+  - wallet-health.yaml
+steps:
+  - name: "Tempo: chain appears in trade chain filter"
+    instruction: >
+      Open the buy/receive asset selector on the trade page. Open the chain
+      filter dropdown and verify Tempo appears as an available chain option.
+      Select Tempo from the chain filter. Confirm the asset list updates to the
+      Tempo-only view and the selected filter chip/button shows Tempo.
+    expected: Tempo is visible in the chain dropdown, selectable, and filters the asset list
+    screenshot: true
+
+  - name: "Tempo: tradeable asset rows are visible, selectable, and icons are not borked"
+    instruction: >
+      While Tempo is selected in the chain filter, look for the Tempo tradeable
+      asset rows. The expected swappable Tempo assets are pathUSD and USDC.
+      Verify both rows are present, the network/chain attribution clearly says
+      Tempo, and the asset + network icons render normally rather than showing
+      a broken image, empty placeholder, or obviously wrong chain icon. Click
+      USDC to select it as the buy asset.
+    expected: pathUSD and USDC on Tempo are visible with sane icons, and USDC becomes the selected buy asset
+    screenshot: true
+
+  - name: "Tempo: popular assets are populated under the Tempo filter"
+    instruction: >
+      Re-open the buy/receive asset selector if needed, keep Tempo selected in
+      the chain filter, and inspect the modal content. Verify there is a
+      Popular Assets section or equivalent top section with Tempo assets, and
+      that it is not empty. Confirm pathUSD and USDC are present as selectable
+      Tempo options.
+    expected: Tempo-filtered popular assets are populated and both pathUSD and USDC are available
+    screenshot: true
+
+  - name: "Tempo: connect chain account so receive address resolves"
+    instruction: >
+      If the trade form says no Tempo address is connected, click the Tempo
+      connect/manage-accounts flow and add a Tempo account. Finish the modal
+      flow and return to trade. Confirm the receive address area resolves to an
+      actual Tempo address instead of the missing-address warning.
+    expected: Tempo receive address resolves successfully after connecting a Tempo account
+    screenshot: true
+
+  - name: "Tempo: cross-chain swap into USDC ($1-ish)"
+    instruction: >
+      Configure a small cross-chain trade into Tempo USDC. Use a funded sell
+      asset from another chain - prefer ETH on Ethereum, but if that wallet is
+      unfunded use another asset/chain with available balance. Enter roughly
+      $1 of sell amount. Wait for a quote, open the trade preview, then confirm
+      and sign the trade. Wait for completion and dismiss any success
+      notification.
+    expected: A small cross-chain swap into USDC on Tempo completes successfully
+    screenshot: true
+
+  - name: "Tempo: same-chain USDC to pathUSD swap works"
+    instruction: >
+      Configure a small same-chain Tempo swap from USDC to pathUSD using the
+      Tempo balance received in the previous step. Use a small amount like
+      $0.20 or the closest safe amount available. Wait for a quote, open the
+      trade preview, approve if required, then confirm and sign the swap. Wait
+      for completion and dismiss any success notification.
+    expected: A same-chain Tempo USDC to pathUSD swap completes successfully
+    screenshot: true
+
+  - name: "Tempo: same-chain pathUSD to USDC swap works"
+    instruction: >
+      Configure a small same-chain Tempo swap from pathUSD back to USDC using
+      the Tempo balance now in the wallet. Use a small amount like $0.10 or the
+      closest safe amount available. Wait for a quote, open the trade preview,
+      approve if required, then confirm and sign the swap. Wait for completion
+      and dismiss any success notification.
+    expected: A same-chain Tempo pathUSD to USDC swap completes successfully
+    screenshot: true
+
+  - name: "Tempo: self-send of a Tempo token works and fee display is sane"
+    instruction: >
+      Open the send flow for Tempo USDC and self-send a very small amount such
+      as $0.10 to the currently connected Tempo account address. Verify the
+      confirm screen shows a sane small fee amount in the Tempo token rather
+      than a giant nonsense value. Confirm and sign the transaction, then wait
+      for the send success state or success toast.
+    expected: A Tempo USDC self-send completes successfully and the displayed fee looks sane
+    screenshot: true

headers/csps/chains/tempo.ts

@@ -0,0 +1,11 @@
+import { loadEnv } from 'vite'
+
+import { FALLBACK_RPC_URLS } from '../../../packages/contracts/src/fallbackRpcUrls'
+import type { Csp } from '../../types'
+
+const mode = process.env.MODE ?? process.env.NODE_ENV ?? 'development'
+const env = loadEnv(mode, process.cwd(), '')
+
+export const csp: Csp = {
+  'connect-src': [env.VITE_TEMPO_NODE_URL, ...FALLBACK_RPC_URLS.tempo],
+}

headers/csps/index.ts

@@ -45,6 +45,7 @@ import { csp as sonic } from './chains/sonic'
 import { csp as starknet } from './chains/starknet'
 import { csp as story } from './chains/story'
 import { csp as sui } from './chains/sui'
+import { csp as tempo } from './chains/tempo'
 import { csp as thorchain } from './chains/thorchain'
 import { csp as ton } from './chains/ton'
 import { csp as tron } from './chains/tron'
@@ -208,4 +209,5 @@ export const csps = [
   railway,
   discord,
   yieldxyz,
+  tempo,
 ]

packages/caip/src/adapters/coincap/generated/eip155_10/adapter.json

@@ -1 +1 @@
-{"eip155:10/erc20:0x94b008aa00579c1307b0ef2c499ad98a8ce58e58":"tether","eip155:10/erc20:0x0b2c639c533813f4aa9d7837caf62653d097ff85":"usd-coin","eip155:10/erc20:0x1f32b1c2345538c0c6f582fcb022739c4a194ebb":"lido-finance-wsteth","eip155:10/erc20:0x68f180fcce6836688e9084f035309e29bf0a2095":"wrapped-bitcoin","eip155:10/erc20:0x4200000000000000000000000000000000000006":"weth","eip155:10/erc20:0x350a791bfc2c21f9ed5d10980dad2e2638ffa7f6":"chainlink","eip155:10/erc20:0x5a7facb970d094b6c7ff1df0ea68d99e6e73cbff":"wrapped-eeth","eip155:10/erc20:0x6fd9d7ad17242c41f7131d257212c54a0e816691":"uniswap","eip155:10/erc20:0xdc6ff44d5d932cbd77b52e5612ba0529dc6226f1":"worldcoin-org","eip155:10/erc20:0x9bcef72be871e61ed4fbbc7630889bee758eb81d":"rocket-pool-eth","eip155:10/erc20:0x6985884c4392d348587b19cb9eaaf157f13271cd":"layerzero","eip155:10/erc20:0x0994206dfe8de6ec6920ff4d779b0d950605fb53":"curve-dao-token","eip155:10/erc20:0x4200000000000000000000000000000000000042":"optimism-ethereum","eip155:10/erc20:0x2e3d870790dc77a83dd1d18184acc7439a53f475":"frax","eip155:10/erc20:0x80eede496655fb9047dd39d9f418d5483ed600df":"frax-usd","eip155:10/erc20:0xb0ffa8000886e57f86dd5264b9582b2ad87b2b91":"wormhole","eip155:10/erc20:0xc6bdfc4f2e90196738873e824a9efa03f7c64176":"vicicoin","eip155:10/erc20:0x8700daec35af8ff88c16bdf0418774cb3d7599b4":"synthetix-network-token","eip155:10/erc20:0x3eaeb77b03dbc0f6321ae1b72b2e9adb0f60112b":"sushiswap","eip155:10/erc20:0xaeaeed23478c3a4b798e4ed40d8b7f41366ae861":"ankr","eip155:10/erc20:0xa00e3a3511aac35ca78530c85007afcd31753819":"kyber-network","eip155:10/erc20:0x8c6f28f2f1a3c87f0f938b96d27520d9751ec8d9":"susd","eip155:10/erc20:0xec6adef5e1006bb305bb1975333e8fc4071295bf":"cartesi","eip155:10/erc20:0xe05a08226c49b636acf99c40da8dc6af83ce5bb3":"ankreth","eip155:10/erc20:0x5f8d72676e37197b5011afc64d8641af2fe41fdb":"measurable-data-token","eip155:10/erc20:0xaf9fe3b5ccdae78188b1f8b9a49da7ae9510f151":"dhedge-dao","eip155:10/erc20:0xc7edf7b7b3667a06992508e7b156eff794a9e1c8":"persistence","eip155:10/erc20:0xe453d6649643f1f460c371dc3d1da98f7922fe51":"fuse-network","eip155:10/erc20:0x528cdc92eab044e1e39fe43b9514bfdab4412b98":"giveth","eip155:10/erc20:0x1da650c3b2daa8aa9ff6f661d4156ce24d08a062":"dentacoin","eip155:10/erc20:0x6a661312938d22a2a0e27f585073e4406903990a":"mahadao"}
+{"eip155:10/erc20:0x94b008aa00579c1307b0ef2c499ad98a8ce58e58":"tether","eip155:10/erc20:0x0b2c639c533813f4aa9d7837caf62653d097ff85":"usd-coin","eip155:10/erc20:0x1f32b1c2345538c0c6f582fcb022739c4a194ebb":"lido-finance-wsteth","eip155:10/erc20:0x68f180fcce6836688e9084f035309e29bf0a2095":"wrapped-bitcoin","eip155:10/erc20:0x4200000000000000000000000000000000000006":"weth","eip155:10/erc20:0x350a791bfc2c21f9ed5d10980dad2e2638ffa7f6":"chainlink","eip155:10/erc20:0x5a7facb970d094b6c7ff1df0ea68d99e6e73cbff":"wrapped-eeth","eip155:10/erc20:0x6fd9d7ad17242c41f7131d257212c54a0e816691":"uniswap","eip155:10/erc20:0xdc6ff44d5d932cbd77b52e5612ba0529dc6226f1":"worldcoin-org","eip155:10/erc20:0x9bcef72be871e61ed4fbbc7630889bee758eb81d":"rocket-pool-eth","eip155:10/erc20:0x6985884c4392d348587b19cb9eaaf157f13271cd":"layerzero","eip155:10/erc20:0x0994206dfe8de6ec6920ff4d779b0d950605fb53":"curve-dao-token","eip155:10/erc20:0x2e3d870790dc77a83dd1d18184acc7439a53f475":"frax","eip155:10/erc20:0x4200000000000000000000000000000000000042":"optimism-ethereum","eip155:10/erc20:0x80eede496655fb9047dd39d9f418d5483ed600df":"frax-usd","eip155:10/erc20:0xc6bdfc4f2e90196738873e824a9efa03f7c64176":"vicicoin","eip155:10/erc20:0xb0ffa8000886e57f86dd5264b9582b2ad87b2b91":"wormhole","eip155:10/erc20:0x8700daec35af8ff88c16bdf0418774cb3d7599b4":"synthetix-network-token","eip155:10/erc20:0x3eaeb77b03dbc0f6321ae1b72b2e9adb0f60112b":"sushiswap","eip155:10/erc20:0xaeaeed23478c3a4b798e4ed40d8b7f41366ae861":"ankr","eip155:10/erc20:0xa00e3a3511aac35ca78530c85007afcd31753819":"kyber-network","eip155:10/erc20:0x8c6f28f2f1a3c87f0f938b96d27520d9751ec8d9":"susd","eip155:10/erc20:0xec6adef5e1006bb305bb1975333e8fc4071295bf":"cartesi","eip155:10/erc20:0xe05a08226c49b636acf99c40da8dc6af83ce5bb3":"ankreth","eip155:10/erc20:0x5f8d72676e37197b5011afc64d8641af2fe41fdb":"measurable-data-token","eip155:10/erc20:0xaf9fe3b5ccdae78188b1f8b9a49da7ae9510f151":"dhedge-dao","eip155:10/erc20:0xc7edf7b7b3667a06992508e7b156eff794a9e1c8":"persistence","eip155:10/erc20:0xe453d6649643f1f460c371dc3d1da98f7922fe51":"fuse-network","eip155:10/erc20:0x528cdc92eab044e1e39fe43b9514bfdab4412b98":"giveth","eip155:10/erc20:0x1da650c3b2daa8aa9ff6f661d4156ce24d08a062":"dentacoin","eip155:10/erc20:0x6a661312938d22a2a0e27f585073e4406903990a":"mahadao"}