Add Soroswap AMM as alternative swap route #24

Open
Open
Add Soroswap AMM as alternative swap route#24
Labels
HardComplexity: High — 200 ptsStellar wavefeature

Description

@MJ-RWA
MJ-RWA
opened on Jun 19, 2026

Complexity: High — 200 pts

Summary

StellarFlow swaps currently use Stellar's native DEX order book. Soroswap is a Soroban-based AMM on Stellar that often has better rates for certain pairs. This issue adds Soroswap as a parallel swap option — both quotes are fetched simultaneously and the user sees which gives a better rate.

Files to Create/Modify

  • Create:src/lib/soroswap.ts — Soroswap API client and Soroban tx builder
  • Modify:src/pages/SwapPage.tsx — dual quote UI and route selection
  • Modify:src/lib/stellar.ts — add Soroban contract invocation helper for Soroswap

Implementation Notes

soroswap.ts

constSOROSWAP_API='https://api.soroswap.finance';exportasyncfunctiongetSoroswapQuote(fromAsset,toAsset,amount,fromIssuer?,toIssuer?): Promise<{toAmount,route,contractAddress}|null>exportasyncfunctionbuildSoroswapTx(sourceAddress,contractAddress, ...): Promise<string>

getSoroswapQuote maps asset to Soroswap's format ('native' for XLM, 'ASSET_CODE:ISSUER' for others). buildSoroswapTx invokes the Soroban router contract using StellarSdk.Contract and StellarSdk.nativeToScVal.

SwapPage

const[dexQuote,soroswapQuote]=awaitPromise.allSettled([getSwapQuote(...),getSoroswapQuote(...)]);

Show both as selectable cards. Highlight the one with a better rate (add a "Best rate" badge). Store user's selection in selectedRoute state. On "Swap", use the selected route's tx builder.

If Soroswap throws or returns null, silently show only the DEX card.

Acceptance Criteria

  • Both DEX and Soroswap quotes fetched in parallel
  • Both quotes displayed as selectable cards with their rates
  • Better rate is highlighted/recommended
  • Both routes execute correctly when selected
  • If Soroswap is unavailable, only DEX quote is shown (no crash)
  • Works on Stellar mainnet

Screen Recording Requirements

  1. Open Swap page → both DEX and Soroswap quotes load simultaneously
  2. One quote shows a better rate — it is highlighted
  3. Select the Soroswap route → sign and execute → success
  4. Select the DEX route → sign and execute → success
  5. Show the transaction on Stellar Expert confirming the correct operation type

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    HardComplexity: High — 200 ptsStellar wavefeature

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try {
var __m = "github.com";
var __re = new RegExp('^' + "github\\.com" + '

      Skip to content
      Add Soroswap AMM as alternative swap route #24
      Open
      Open
      Add Soroswap AMM as alternative swap route#24
      Labels
      HardComplexity: High — 200 ptsStellar wavefeature
      Description
      @MJ-RWA
      MJ-RWA
      opened on Jun 19, 2026
      Complexity: High — 200 pts
      Summary
      StellarFlow swaps currently use Stellar's native DEX order book. Soroswap is a Soroban-based AMM on Stellar that often has better rates for certain pairs. This issue adds Soroswap as a parallel swap option — both quotes are fetched simultaneously and the user sees which gives a better rate.
      Files to Create/Modify
      • Create:src/lib/soroswap.ts — Soroswap API client and Soroban tx builder
      • Modify:src/pages/SwapPage.tsx — dual quote UI and route selection
      • Modify:src/lib/stellar.ts — add Soroban contract invocation helper for Soroswap
      Implementation Notes
      soroswap.ts
      constSOROSWAP_API='https://api.soroswap.finance';exportasyncfunctiongetSoroswapQuote(fromAsset,toAsset,amount,fromIssuer?,toIssuer?): Promise<{toAmount,route,contractAddress}|null>exportasyncfunctionbuildSoroswapTx(sourceAddress,contractAddress, ...): Promise<string>
      getSoroswapQuote maps asset to Soroswap's format ('native' for XLM, 'ASSET_CODE:ISSUER' for others). buildSoroswapTx invokes the Soroban router contract using StellarSdk.Contract and StellarSdk.nativeToScVal.
      SwapPage
      const[dexQuote,soroswapQuote]=awaitPromise.allSettled([getSwapQuote(...),getSoroswapQuote(...)]);
      Show both as selectable cards. Highlight the one with a better rate (add a "Best rate" badge). Store user's selection in selectedRoute state. On "Swap", use the selected route's tx builder.
      If Soroswap throws or returns null, silently show only the DEX card.
      Acceptance Criteria
      •  Both DEX and Soroswap quotes fetched in parallel
      •  Both quotes displayed as selectable cards with their rates
      •  Better rate is highlighted/recommended
      •  Both routes execute correctly when selected
      •  If Soroswap is unavailable, only DEX quote is shown (no crash)
      •  Works on Stellar mainnet
      Screen Recording Requirements
      1. Open Swap page → both DEX and Soroswap quotes load simultaneously
      2. One quote shows a better rate — it is highlighted
      3. Select the Soroswap route → sign and execute → success
      4. Select the DEX route → sign and execute → success
      5. Show the transaction on Stellar Expert confirming the correct operation type
      Metadata
      Metadata
      Assignees
      No one assigned
        Labels
        HardComplexity: High — 200 ptsStellar wavefeature
        Projects
        No projects
          Milestone
          No milestone
          Relationships
          None yet
          Development
          No branches or pull requests
          Issue actions
          
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(function(){
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var __m = "*";
var __re = new RegExp('^' + ".*" + '

          Skip to content
          Add Soroswap AMM as alternative swap route #24
          Open
          Open
          Add Soroswap AMM as alternative swap route#24
          Labels
          HardComplexity: High — 200 ptsStellar wavefeature
          Description
          @MJ-RWA
          MJ-RWA
          opened on Jun 19, 2026
          Complexity: High — 200 pts
          Summary
          StellarFlow swaps currently use Stellar's native DEX order book. Soroswap is a Soroban-based AMM on Stellar that often has better rates for certain pairs. This issue adds Soroswap as a parallel swap option — both quotes are fetched simultaneously and the user sees which gives a better rate.
          Files to Create/Modify
          • Create:src/lib/soroswap.ts — Soroswap API client and Soroban tx builder
          • Modify:src/pages/SwapPage.tsx — dual quote UI and route selection
          • Modify:src/lib/stellar.ts — add Soroban contract invocation helper for Soroswap
          Implementation Notes
          soroswap.ts
          constSOROSWAP_API='https://api.soroswap.finance';exportasyncfunctiongetSoroswapQuote(fromAsset,toAsset,amount,fromIssuer?,toIssuer?): Promise<{toAmount,route,contractAddress}|null>exportasyncfunctionbuildSoroswapTx(sourceAddress,contractAddress, ...): Promise<string>
          getSoroswapQuote maps asset to Soroswap's format ('native' for XLM, 'ASSET_CODE:ISSUER' for others). buildSoroswapTx invokes the Soroban router contract using StellarSdk.Contract and StellarSdk.nativeToScVal.
          SwapPage
          const[dexQuote,soroswapQuote]=awaitPromise.allSettled([getSwapQuote(...),getSoroswapQuote(...)]);
          Show both as selectable cards. Highlight the one with a better rate (add a "Best rate" badge). Store user's selection in selectedRoute state. On "Swap", use the selected route's tx builder.
          If Soroswap throws or returns null, silently show only the DEX card.
          Acceptance Criteria
          •  Both DEX and Soroswap quotes fetched in parallel
          •  Both quotes displayed as selectable cards with their rates
          •  Better rate is highlighted/recommended
          •  Both routes execute correctly when selected
          •  If Soroswap is unavailable, only DEX quote is shown (no crash)
          •  Works on Stellar mainnet
          Screen Recording Requirements
          1. Open Swap page → both DEX and Soroswap quotes load simultaneously
          2. One quote shows a better rate — it is highlighted
          3. Select the Soroswap route → sign and execute → success
          4. Select the DEX route → sign and execute → success
          5. Show the transaction on Stellar Expert confirming the correct operation type
          Metadata
          Metadata
          Assignees
          No one assigned
            Labels
            HardComplexity: High — 200 ptsStellar wavefeature
            Projects
            No projects
              Milestone
              No milestone
              Relationships
              None yet
              Development
              No branches or pull requests
              Issue actions
              
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(function(){
try {
var __m = "*";
var __re = new RegExp('^' + ".*" + '

              Skip to content
              Add Soroswap AMM as alternative swap route #24
              Open
              Open
              Add Soroswap AMM as alternative swap route#24
              Labels
              HardComplexity: High — 200 ptsStellar wavefeature
              Description
              @MJ-RWA
              MJ-RWA
              opened on Jun 19, 2026
              Complexity: High — 200 pts
              Summary
              StellarFlow swaps currently use Stellar's native DEX order book. Soroswap is a Soroban-based AMM on Stellar that often has better rates for certain pairs. This issue adds Soroswap as a parallel swap option — both quotes are fetched simultaneously and the user sees which gives a better rate.
              Files to Create/Modify
              • Create:src/lib/soroswap.ts — Soroswap API client and Soroban tx builder
              • Modify:src/pages/SwapPage.tsx — dual quote UI and route selection
              • Modify:src/lib/stellar.ts — add Soroban contract invocation helper for Soroswap
              Implementation Notes
              soroswap.ts
              constSOROSWAP_API='https://api.soroswap.finance';exportasyncfunctiongetSoroswapQuote(fromAsset,toAsset,amount,fromIssuer?,toIssuer?): Promise<{toAmount,route,contractAddress}|null>exportasyncfunctionbuildSoroswapTx(sourceAddress,contractAddress, ...): Promise<string>
              getSoroswapQuote maps asset to Soroswap's format ('native' for XLM, 'ASSET_CODE:ISSUER' for others). buildSoroswapTx invokes the Soroban router contract using StellarSdk.Contract and StellarSdk.nativeToScVal.
              SwapPage
              const[dexQuote,soroswapQuote]=awaitPromise.allSettled([getSwapQuote(...),getSoroswapQuote(...)]);
              Show both as selectable cards. Highlight the one with a better rate (add a "Best rate" badge). Store user's selection in selectedRoute state. On "Swap", use the selected route's tx builder.
              If Soroswap throws or returns null, silently show only the DEX card.
              Acceptance Criteria
              •  Both DEX and Soroswap quotes fetched in parallel
              •  Both quotes displayed as selectable cards with their rates
              •  Better rate is highlighted/recommended
              •  Both routes execute correctly when selected
              •  If Soroswap is unavailable, only DEX quote is shown (no crash)
              •  Works on Stellar mainnet
              Screen Recording Requirements
              1. Open Swap page → both DEX and Soroswap quotes load simultaneously
              2. One quote shows a better rate — it is highlighted
              3. Select the Soroswap route → sign and execute → success
              4. Select the DEX route → sign and execute → success
              5. Show the transaction on Stellar Expert confirming the correct operation type
              Metadata
              Metadata
              Assignees
              No one assigned
                Labels
                HardComplexity: High — 200 ptsStellar wavefeature
                Projects
                No projects
                  Milestone
                  No milestone
                  Relationships
                  None yet
                  Development
                  No branches or pull requests
                  Issue actions
                  
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try {
var __m = "youtube.com";
var __re = new RegExp('^' + "youtube\\.com" + '

                  Skip to content
                  Add Soroswap AMM as alternative swap route #24
                  Open
                  Open
                  Add Soroswap AMM as alternative swap route#24
                  Labels
                  HardComplexity: High — 200 ptsStellar wavefeature
                  Description
                  @MJ-RWA
                  MJ-RWA
                  opened on Jun 19, 2026
                  Complexity: High — 200 pts
                  Summary
                  StellarFlow swaps currently use Stellar's native DEX order book. Soroswap is a Soroban-based AMM on Stellar that often has better rates for certain pairs. This issue adds Soroswap as a parallel swap option — both quotes are fetched simultaneously and the user sees which gives a better rate.
                  Files to Create/Modify
                  • Create:src/lib/soroswap.ts — Soroswap API client and Soroban tx builder
                  • Modify:src/pages/SwapPage.tsx — dual quote UI and route selection
                  • Modify:src/lib/stellar.ts — add Soroban contract invocation helper for Soroswap
                  Implementation Notes
                  soroswap.ts
                  constSOROSWAP_API='https://api.soroswap.finance';exportasyncfunctiongetSoroswapQuote(fromAsset,toAsset,amount,fromIssuer?,toIssuer?): Promise<{toAmount,route,contractAddress}|null>exportasyncfunctionbuildSoroswapTx(sourceAddress,contractAddress, ...): Promise<string>
                  getSoroswapQuote maps asset to Soroswap's format ('native' for XLM, 'ASSET_CODE:ISSUER' for others). buildSoroswapTx invokes the Soroban router contract using StellarSdk.Contract and StellarSdk.nativeToScVal.
                  SwapPage
                  const[dexQuote,soroswapQuote]=awaitPromise.allSettled([getSwapQuote(...),getSoroswapQuote(...)]);
                  Show both as selectable cards. Highlight the one with a better rate (add a "Best rate" badge). Store user's selection in selectedRoute state. On "Swap", use the selected route's tx builder.
                  If Soroswap throws or returns null, silently show only the DEX card.
                  Acceptance Criteria
                  •  Both DEX and Soroswap quotes fetched in parallel
                  •  Both quotes displayed as selectable cards with their rates
                  •  Better rate is highlighted/recommended
                  •  Both routes execute correctly when selected
                  •  If Soroswap is unavailable, only DEX quote is shown (no crash)
                  •  Works on Stellar mainnet
                  Screen Recording Requirements
                  1. Open Swap page → both DEX and Soroswap quotes load simultaneously
                  2. One quote shows a better rate — it is highlighted
                  3. Select the Soroswap route → sign and execute → success
                  4. Select the DEX route → sign and execute → success
                  5. Show the transaction on Stellar Expert confirming the correct operation type
                  Metadata
                  Metadata
                  Assignees
                  No one assigned
                    Labels
                    HardComplexity: High — 200 ptsStellar wavefeature
                    Projects
                    No projects
                      Milestone
                      No milestone
                      Relationships
                      None yet
                      Development
                      No branches or pull requests
                      Issue actions
                      
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(function(){
try {
var __m = "*";
var __re = new RegExp('^' + ".*" + '

                      Skip to content
                      Add Soroswap AMM as alternative swap route #24
                      Open
                      Open
                      Add Soroswap AMM as alternative swap route#24
                      Labels
                      HardComplexity: High — 200 ptsStellar wavefeature
                      Description
                      @MJ-RWA
                      MJ-RWA
                      opened on Jun 19, 2026
                      Complexity: High — 200 pts
                      Summary
                      StellarFlow swaps currently use Stellar's native DEX order book. Soroswap is a Soroban-based AMM on Stellar that often has better rates for certain pairs. This issue adds Soroswap as a parallel swap option — both quotes are fetched simultaneously and the user sees which gives a better rate.
                      Files to Create/Modify
                      • Create:src/lib/soroswap.ts — Soroswap API client and Soroban tx builder
                      • Modify:src/pages/SwapPage.tsx — dual quote UI and route selection
                      • Modify:src/lib/stellar.ts — add Soroban contract invocation helper for Soroswap
                      Implementation Notes
                      soroswap.ts
                      constSOROSWAP_API='https://api.soroswap.finance';exportasyncfunctiongetSoroswapQuote(fromAsset,toAsset,amount,fromIssuer?,toIssuer?): Promise<{toAmount,route,contractAddress}|null>exportasyncfunctionbuildSoroswapTx(sourceAddress,contractAddress, ...): Promise<string>
                      getSoroswapQuote maps asset to Soroswap's format ('native' for XLM, 'ASSET_CODE:ISSUER' for others). buildSoroswapTx invokes the Soroban router contract using StellarSdk.Contract and StellarSdk.nativeToScVal.
                      SwapPage
                      const[dexQuote,soroswapQuote]=awaitPromise.allSettled([getSwapQuote(...),getSoroswapQuote(...)]);
                      Show both as selectable cards. Highlight the one with a better rate (add a "Best rate" badge). Store user's selection in selectedRoute state. On "Swap", use the selected route's tx builder.
                      If Soroswap throws or returns null, silently show only the DEX card.
                      Acceptance Criteria
                      •  Both DEX and Soroswap quotes fetched in parallel
                      •  Both quotes displayed as selectable cards with their rates
                      •  Better rate is highlighted/recommended
                      •  Both routes execute correctly when selected
                      •  If Soroswap is unavailable, only DEX quote is shown (no crash)
                      •  Works on Stellar mainnet
                      Screen Recording Requirements
                      1. Open Swap page → both DEX and Soroswap quotes load simultaneously
                      2. One quote shows a better rate — it is highlighted
                      3. Select the Soroswap route → sign and execute → success
                      4. Select the DEX route → sign and execute → success
                      5. Show the transaction on Stellar Expert confirming the correct operation type
                      Metadata
                      Metadata
                      Assignees
                      No one assigned
                        Labels
                        HardComplexity: High — 200 ptsStellar wavefeature
                        Projects
                        No projects
                          Milestone
                          No milestone
                          Relationships
                          None yet
                          Development
                          No branches or pull requests
                          Issue actions
                          
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(function(){
try {
var __m = "*";
var __re = new RegExp('^' + ".*" + '

                          Skip to content
                          Add Soroswap AMM as alternative swap route #24
                          Open
                          Open
                          Add Soroswap AMM as alternative swap route#24
                          Labels
                          HardComplexity: High — 200 ptsStellar wavefeature
                          Description
                          @MJ-RWA
                          MJ-RWA
                          opened on Jun 19, 2026
                          Complexity: High — 200 pts
                          Summary
                          StellarFlow swaps currently use Stellar's native DEX order book. Soroswap is a Soroban-based AMM on Stellar that often has better rates for certain pairs. This issue adds Soroswap as a parallel swap option — both quotes are fetched simultaneously and the user sees which gives a better rate.
                          Files to Create/Modify
                          • Create:src/lib/soroswap.ts — Soroswap API client and Soroban tx builder
                          • Modify:src/pages/SwapPage.tsx — dual quote UI and route selection
                          • Modify:src/lib/stellar.ts — add Soroban contract invocation helper for Soroswap
                          Implementation Notes
                          soroswap.ts
                          constSOROSWAP_API='https://api.soroswap.finance';exportasyncfunctiongetSoroswapQuote(fromAsset,toAsset,amount,fromIssuer?,toIssuer?): Promise<{toAmount,route,contractAddress}|null>exportasyncfunctionbuildSoroswapTx(sourceAddress,contractAddress, ...): Promise<string>
                          getSoroswapQuote maps asset to Soroswap's format ('native' for XLM, 'ASSET_CODE:ISSUER' for others). buildSoroswapTx invokes the Soroban router contract using StellarSdk.Contract and StellarSdk.nativeToScVal.
                          SwapPage
                          const[dexQuote,soroswapQuote]=awaitPromise.allSettled([getSwapQuote(...),getSoroswapQuote(...)]);
                          Show both as selectable cards. Highlight the one with a better rate (add a "Best rate" badge). Store user's selection in selectedRoute state. On "Swap", use the selected route's tx builder.
                          If Soroswap throws or returns null, silently show only the DEX card.
                          Acceptance Criteria
                          •  Both DEX and Soroswap quotes fetched in parallel
                          •  Both quotes displayed as selectable cards with their rates
                          •  Better rate is highlighted/recommended
                          •  Both routes execute correctly when selected
                          •  If Soroswap is unavailable, only DEX quote is shown (no crash)
                          •  Works on Stellar mainnet
                          Screen Recording Requirements
                          1. Open Swap page → both DEX and Soroswap quotes load simultaneously
                          2. One quote shows a better rate — it is highlighted
                          3. Select the Soroswap route → sign and execute → success
                          4. Select the DEX route → sign and execute → success
                          5. Show the transaction on Stellar Expert confirming the correct operation type
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                            HardComplexity: High — 200 ptsStellar wavefeature
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, 'i');
if (__m === '*' || __re.test(location.href)) {
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style.id = 'universal-dark-mode-style';
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/* Invert everything except media */
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filter: invert(1) hue-rotate(180deg) !important;
background: #1a1a2e !important;
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filter: invert(1) hue-rotate(180deg) !important;
}
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[data-theme="light"], [data-theme="light"],
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.highlight, .highlight *,
pre code, pre code * {
filter: none !important;
}
/* Fix common UI elements */
.modal, .popup, .dropdown-menu, .tooltip, .popover {
filter: invert(1) hue-rotate(180deg) !important;
background: #2d2d44 !important;
border-color: #444 !important;
}
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::-webkit-scrollbar { background: #1a1a2e !important; }
::-webkit-scrollbar-thumb { background: #444 !important; }
::-webkit-scrollbar-thumb:hover { background: #555 !important; }
/* Selection */
::selection { background: #4ecdc4 !important; color: #1a1a2e !important; }
::-moz-selection { background: #4ecdc4 !important; color: #1a1a2e !important; }
';
}
function removeDarkMode() {
var style = document.getElementById('universal-dark-mode-style');
if (style) style.remove();
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if (e.altKey && e.shiftKey && e.key === 'D') {
e.preventDefault();
enabled = !enabled;
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console.log('[Universal Dark Mode] Enabled');
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var observer = new MutationObserver(function(mutations) {
if (enabled && !document.getElementById('universal-dark-mode-style')) {
applyDarkMode();
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});
observer.observe(document.head, { childList: true });
console.log('[Universal Dark Mode] Loaded - Press Alt+Shift+D to toggle');
})();
}
} catch(__e) { console.warn('[Userscript:Universal Dark Mode]', __e); }
})();
})();

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                              Add Soroswap AMM as alternative swap route #24
                              Open
                              Open
                              Add Soroswap AMM as alternative swap route#24
                              Labels
                              HardComplexity: High — 200 ptsStellar wavefeature
                              Description
                              @MJ-RWA
                              MJ-RWA
                              opened on Jun 19, 2026
                              Complexity: High — 200 pts
                              Summary
                              StellarFlow swaps currently use Stellar's native DEX order book. Soroswap is a Soroban-based AMM on Stellar that often has better rates for certain pairs. This issue adds Soroswap as a parallel swap option — both quotes are fetched simultaneously and the user sees which gives a better rate.
                              Files to Create/Modify
                              • Create:src/lib/soroswap.ts — Soroswap API client and Soroban tx builder
                              • Modify:src/pages/SwapPage.tsx — dual quote UI and route selection
                              • Modify:src/lib/stellar.ts — add Soroban contract invocation helper for Soroswap
                              Implementation Notes
                              soroswap.ts
                              constSOROSWAP_API='https://api.soroswap.finance';exportasyncfunctiongetSoroswapQuote(fromAsset,toAsset,amount,fromIssuer?,toIssuer?): Promise<{toAmount,route,contractAddress}|null>exportasyncfunctionbuildSoroswapTx(sourceAddress,contractAddress, ...): Promise<string>
                              getSoroswapQuote maps asset to Soroswap's format ('native' for XLM, 'ASSET_CODE:ISSUER' for others). buildSoroswapTx invokes the Soroban router contract using StellarSdk.Contract and StellarSdk.nativeToScVal.
                              SwapPage
                              const[dexQuote,soroswapQuote]=awaitPromise.allSettled([getSwapQuote(...),getSoroswapQuote(...)]);
                              Show both as selectable cards. Highlight the one with a better rate (add a "Best rate" badge). Store user's selection in selectedRoute state. On "Swap", use the selected route's tx builder.
                              If Soroswap throws or returns null, silently show only the DEX card.
                              Acceptance Criteria
                              •  Both DEX and Soroswap quotes fetched in parallel
                              •  Both quotes displayed as selectable cards with their rates
                              •  Better rate is highlighted/recommended
                              •  Both routes execute correctly when selected
                              •  If Soroswap is unavailable, only DEX quote is shown (no crash)
                              •  Works on Stellar mainnet
                              Screen Recording Requirements
                              1. Open Swap page → both DEX and Soroswap quotes load simultaneously
                              2. One quote shows a better rate — it is highlighted
                              3. Select the Soroswap route → sign and execute → success
                              4. Select the DEX route → sign and execute → success
                              5. Show the transaction on Stellar Expert confirming the correct operation type
                              Metadata
                              Metadata
                              Assignees
                              No one assigned
                                Labels
                                HardComplexity: High — 200 ptsStellar wavefeature
                                Projects
                                No projects
                                  Milestone
                                  No milestone
                                  Relationships
                                  None yet
                                  Development
                                  No branches or pull requests
                                  Issue actions