[runtime/simplex]]: add phantom order support for passive price and liquidity indexing by dharjeezy · Pull Request #983 · polytope-labs/hyperbridge

dharjeezy · 2026-06-19T22:25:28Z

Adds phantom order price and liquidity indexing to the intent coprocessor. The pallet gains two new extrinsics — register_phantom_order (permissionless) and set_phantom_bid_window (governance) — along with the CurrentPhantomOrder and PhantomBidWindow storage items and a phantom_bid_window() helper that mirrors the existing storage_deposit_fee() fallback pattern.

The SubQuery indexer is extended with handlePhantomOrderRegistered and handlePhantomBidPlaced handlers that decode each filler's user operation, extract proposed output amounts, and run a lightweight ERC-20 transfer simulation via state overrides to produce a simulationSuccess signal indexed alongside each bid.

closes #977

Wizdave97 · 2026-06-22T08:41:37Z

+		/// registered phantom order. Called by the intent coprocessor service.
+		#[pallet::call_index(7)]
+		#[pallet::weight(T::WeightInfo::register_phantom_order())]
+		pub fn register_phantom_order(


This is not correct, the phantom order should be generated by the runtime in the pallet hooks

Wizdave97 · 2026-06-22T08:44:09Z


 			Ok(())
 		}
+


There's no extrinsic to setup the phantom order details, like token pairs, chain for the order?

Wizdave97 · 2026-06-22T08:48:40Z

+ * one reverts, and `null` when the simulation could not be run (e.g. RPC error,
+ * unsupported node).
+ */
+async function simulateTokenTransfers(


This is not correct, simulate the bid as is, don't change the solver's balance, only state override needed is the block number so the order is not expired when simulating

…er balance charge

Wizdave97 · 2026-06-22T23:24:52Z

+			chain: &[u8],
+			pair: &PhantomTokenPair,
+		) -> H256 {
+			let mut preimage = Vec::new();


The phantom order should be an actual intent gateway order.

…ent phantom order price snapshot indexing handlers

Wizdave97 · 2026-06-23T13:51:17Z

+			beneficiary: FixedBytes::from([0u8; 32]),
+			assets: vec![sol_types::TokenInfo {
+				token: FixedBytes::from(token_b_bytes),
+				amount: AlloyU256::from(min_output),


The output should be zero

Wizdave97 · 2026-06-23T15:21:09Z


 parameter_types! {
 	pub const IntentsStorageDepositFee: Balance = EXISTENTIAL_DEPOSIT * 10;
+	pub const IntentsPhantomOrderBidWindow: u32 = 15;


1 hour in terms of blocks

Wizdave97 · 2026-06-23T15:23:48Z

+				params: [
+					{ from: solver, to: solver, data: callData },
+					"latest",
+					{ [gatewayAddress]: { code: "0x" } },


This is wrong, the bid should be validated against intent gatway's code.
the override required is inserting the phantom order commitment into the intent gateway's contract state

Wizdave97 · 2026-06-23T15:30:35Z

+				if (!simOk) continue
+
+				const tokenAddress = bytes32ToBytes20(output.token)
+				const balance = await getTokenBalance(evmUrl, tokenAddress, solver)


You need to fetch the filler's balance from the Aave's USDC/USDT vault and cngn yield vault also

Wizdave97 · 2026-06-23T15:31:26Z

+
+				const tokenAddress = bytes32ToBytes20(output.token)
+				const balance = await getTokenBalance(evmUrl, tokenAddress, solver)
+				if (balance === null || balance < outputAmount) continue


Why are we not storing the LP's balance?

Wizdave97 · 2026-06-23T15:31:55Z

+
+				const tokenAddress = bytes32ToBytes20(output.token)
+				const balance = await getTokenBalance(evmUrl, tokenAddress, solver)
+				if (balance === null || balance < outputAmount) continue


This check is not necessary, if the simulation succeeded the filler must have some balance somewhere

Suggested change

if (balance === null || balance < outputAmount) continue

… and gateway state override for phantom order simulation

Wizdave97 · 2026-06-24T11:26:18Z

+
+			// Use pallet-ismp's time provider so the deadline is a real chain timestamp
+			// (non-zero). Simulation uses block 0 (timestamp=0) so the check still passes.
+			let deadline_secs = <T as pallet_ismp::Config>::TimestampProvider::now().as_secs();


Deadline is in blocks, I meant fetch the latest state machine height for the order chain and use that as the deadline

Wizdave97 · 2026-06-24T11:27:07Z

+					token_a: pair.token_a,
+					token_b: pair.token_b,
+					standard_amount: pair.standard_amount,
+					min_output: pair.min_output,


Remove this min_output config, it's not useful

Wizdave97 · 2026-06-24T11:34:35Z

+	commitment: string,
+): Promise<boolean> {
+	try {
+		const { slot1, slot2 } = requestCommitmentKey(commitment as HexString)


Why are you using request commitment keys?
You are meant to override this storage in IntentGateway contract, please check how the contract works

mapping(bytes32 => mapping(address => uint256)) public _orders;

Wizdave97 · 2026-06-24T11:35:21Z

+				jsonrpc: "2.0",
+				method: "eth_call",
+				params: [
+					{ from: solver, to: solver, data: callData },


This is not correct, is the to no meant to be the intent gateway contract?

Wizdave97 · 2026-06-24T11:38:56Z

+
+				const output = fillData.outputs[0]
+				const tokenAddress = bytes32ToBytes20(output.token)
+				const totalBalance = await getTotalSolverBalance(evmUrl, phantom.chain, tokenAddress, solver)


Get solver balance across all configured evm chains

Wizdave97 · 2026-06-24T11:39:07Z

+				const totalBalance = await getTotalSolverBalance(evmUrl, phantom.chain, tokenAddress, solver)
+
+				prices.push(output.amount)
+				if (totalBalance > bestLpBalance) bestLpBalance = totalBalance


This is wrong, store the balance of each Lp that submitted a valid bid independently, also balances should be stored by token

Wizdave97 · 2026-06-24T11:40:16Z

+// ERC-4626 vault addresses per chain, keyed by underlying token address (lowercase).
+// Aave stata token addresses sourced from https://github.com/bgd-labs/aave-address-book
+// Values are arrays because multiple vaults may wrap the same underlying token.
+export const YIELD_VAULT_ADDRESSES: Record<string, Record<string, string[]>> = {


Add this to the builld pipeline like other addresses, don't harcode it here

Wizdave97 · 2026-06-24T11:40:36Z

+	},
+	// Optimism
+	"EVM-10": {
+		// USDC.e (bridged) → stataUSDC.e


Only native USDC

Wizdave97 · 2026-06-24T11:42:04Z

+			deadline: 0n,
+			nonce: BigInt(event.createdAt),
+			fees: 0n,
+			session: ZERO_ADDRESS,


This session address is not correct

Wizdave97 · 2026-06-24T11:42:47Z

+		// Reconstruct the Order with the same field values the pallet used when computing the commitment.
+		const ZERO_BYTES32 = `0x${"00".repeat(32)}` as HexString
+		const ZERO_ADDRESS = `0x${"00".repeat(20)}` as HexString
+		const phantomOrder: Order = {


This order is wrong, fetch it from offchain storage

add phantom order support for passive price and liquidity indexing

62c3163

Wizdave97 reviewed Jun 22, 2026

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Comment thread ...packages/indexer/src/handlers/events/substrateChains/handlePhantomOrderRegistered.handler.ts

Wizdave97 reviewed Jun 22, 2026

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dharjeezy added 4 commits June 22, 2026 17:20

generate phantom order in pallet hook, governance config, remove solv…

e26564e

…er balance charge

update simnode indexer

4460afb

simulate bid

6eb80a1

merge main into dami/phantom-order

f00dad3

dharjeezy requested a review from Wizdave97 June 22, 2026 16:56

Wizdave97 reviewed Jun 22, 2026

View reviewed changes

Comment thread sdk/packages/simplex/src/services/ContractInteractionService.ts

dharjeezy added 4 commits June 23, 2026 13:25

expand PhantomOrderRegistered event with token pair fields and implem…

eb273ac

…ent phantom order price snapshot indexing handlers

doc schemas

3d34405

use SDK exposed abis and functions

d23b75d

rev

ce46fcb

Wizdave97 reviewed Jun 23, 2026

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use zero output

b1a15c9

Wizdave97 reviewed Jun 23, 2026

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Comment thread modules/pallets/intents-coprocessor/src/types.rs

Wizdave97 reviewed Jun 23, 2026

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Comment thread modules/pallets/intents-coprocessor/src/types.rs Outdated

Wizdave97 reviewed Jun 23, 2026

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use static session address, zero output amount, hour-long bid window,…

dac3c5d

… and gateway state override for phantom order simulation

dharjeezy requested a review from Wizdave97 June 23, 2026 18:09

update yield vault addresses

3795ea7

Wizdave97 reviewed Jun 24, 2026

View reviewed changes

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