Add XLS-0082-mpt-dex by gregtatcam · Pull Request #451 · XRPLF/XRPL-Standards

gregtatcam · 2026-02-05T14:54:46Z

This proposal introduces a new amendment MPTVersion2 as an extension to XLS-33 Multi-Purpose Tokens. MPTVersion2 amendment enables Multi-purpose token (MPT) support on the XRPL DEX.

Co-authored-by: David Fuelling <sappenin@gmail.com> Co-authored-by: Mayukha Vadari <mvadari@gmail.com>

* Rename SymbolClass * Rename SymbolPrice * Rename CURRENCY type * Rename Set/DeleteOracle transaction * Add appendix to describe STI_ASSET_TYPE

* Change LastUpdateTime to Unix Time * Change average to mean * Add XRP to supported in STI_CURRENCY * Fix typos

* Remove references to OracleID * Correct validation for URI and Provider to 32 bytes * Update OracleSet description * Reformat transactions and API sections to one table followed by description * Move JSON examples in transactions and API sections before the tables

Co-authored-by: Mayukha Vadari <mvadari@gmail.com>

* Store LastUpdateTime as Unix Time * Add comment for decoded hex value * Remove TBD for tx int value * Update ledger_entry JSON request

…300s, close+300s}

XLS-0082-mpt-dex/README.md

Co-authored-by: Mayukha Vadari <mvadari@gmail.com>

mvadari

Please follow the format listed out in the templates.

XLS-0082-mpt-dex/README.md

Co-authored-by: Mayukha Vadari <mvadari@gmail.com>

mvadari · 2026-02-17T23:32:30Z

XLS-0082-mpt-dex/README.md

+<pre>
+  xls: 82
+  title: MPT Integration into DEX
+  description: Adds Multi-purpose token support for XRPL DEX


nit:

Suggested change

description: Adds Multi-purpose token support for XRPL DEX

description: Adds Multi-Purpose Token (MPT) support for XRPL DEX

mvadari · 2026-02-17T23:33:48Z

XLS-0082-mpt-dex/README.md

+
+### 2.3. State Changes
+
+On success `AMMCreate` creates and authorizes `MPToken` object for each MPT token for AMM pseudo-account.


Suggested change

On success `AMMCreate` creates and authorizes `MPToken` object for each MPT token for AMM pseudo-account.

On success `AMMCreate` creates and authorizes an `MPToken` object for each MPT token for the AMM pseudo-account.

mvadari · 2026-02-17T23:34:07Z

XLS-0082-mpt-dex/README.md

+Any transaction with MPT `Amount` or `Asset` have to use JSON format as described above. For any transaction, which uses MPT token, the token has to be created first by an issuer with `MPTokenIssuanceCreate` transaction and in most cases, except for `AMMCreate`, `AMMWithdraw`, `AMMClawback`, `CheckCash`, and `OfferCreate`, the token has to be authorized by the holder account with `MPTokenAuthorize` transaction as described in [XLS-33d](../XLS-0033d-multi-purpose-tokens/README.md). `MPTokenAuthorize` creates `MPToken` object, owned by a holder account. In addition, `MPTokenIssuanceCreate` must have the following flags set:
+
+- `lsfMPTCanTrade`, in order for individual holders to trade their balances using the XRP Ledger DEX or AMM.
+- `lsfMPTCanTransfer`, in order for the tokens held by non-issuers to be transferred to other accounts.


Please create sections for each ledger entry that is modified. You only need to include the subsections that are changed/relevant to the modifications.

mvadari · 2026-02-17T23:34:54Z

XLS-0082-mpt-dex/README.md

+
+### 11.1. Request Fields
+
+We do not introduce new fields.


Can you elaborate in the RPCs that while there are no new fields, there are new subfields?

mvadari · 2026-02-17T23:35:09Z

XLS-0082-mpt-dex/README.md

+
+# Appendix
+
+## A: `STIssue` serialization


This should be an SType section

gregtatcam and others added 29 commits September 28, 2023 10:36

XLS-47d: Price Oracles

e5634cc

Merge remote-tracking branch 'upstream/master'

7a90d06

Update OracleID calculation and get_aggregate_price

cfc9378

Update get_aggregate_price

058f851

Add LastUpdateTime validation and update time_threshold default

022aa53

Apply suggestions from code review

c65ad8f

Co-authored-by: David Fuelling <sappenin@gmail.com> Co-authored-by: Mayukha Vadari <mvadari@gmail.com>

Rename the token pair to BaseAsset/QuoteAsset and other changes

88aed2a

* Rename SymbolClass * Rename SymbolPrice * Rename CURRENCY type * Rename Set/DeleteOracle transaction * Add appendix to describe STI_ASSET_TYPE

Update get_aggregate_price sections

67b205a

Revert ASSET_TYPE to CURRENCY

ed57acd

Update the title and revision.

e0a27d1

Address @Bronek feedback

fe4c5cc

* Change LastUpdateTime to Unix Time * Change average to mean * Add XRP to supported in STI_CURRENCY * Fix typos

Address reviewer's feedback

4cc0654

Fix typo

1072f09

Remove .DS_Store

13e16cd

Update XLS-47d-PriceOracles/README.md

e81739e

Co-authored-by: Mayukha Vadari <mvadari@gmail.com>

Allow matching AssetClass and Provider on Oracle update

9194fe5

Allow token pair deletion on update

762966a

Minor re-wording

02e5f82

Address @mvadari comments

88d1d44

* Store LastUpdateTime as Unix Time * Add comment for decoded hex value * Remove TBD for tx int value * Update ledger_entry JSON request

Address reviewer's feedback

eaef984

Fix OracleSet tx fields table, update LastUpdateTime check to {close-…

7bb38ae

…300s, close+300s}

Merge remote-tracking branch 'upstream/master'

d45ea1b

Merge remote-tracking branch 'upstream/master'

d8bf088

Change Scale range to {0-20}; omit Scale for 0 value

4274f69

Clarify Scale valid range

05caf27

Clarify missing token pair update on OracleSet

790e78d

Merge remote-tracking branch 'upstream/master'

8f87c37

Add XLS-0082-mpt-dex

e007dac

kennyzlei requested a review from shawnxie999 February 5, 2026 16:33

Fix formatting

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improve XLS validator #457

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gregtatcam and others added 5 commits February 11, 2026 10:45

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Co-authored-by: Mayukha Vadari <mvadari@gmail.com>

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Co-authored-by: Mayukha Vadari <mvadari@gmail.com>

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Co-authored-by: Mayukha Vadari <mvadari@gmail.com>

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XLS-0082-mpt-dex/README.md

# Appendix

## A: `STIssue` serialization

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mvadari Feb 17, 2026

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This should be an SType section

	description: Adds Multi-purpose token support for XRPL DEX
	description: Adds Multi-Purpose Token (MPT) support for XRPL DEX


		### 2.3. State Changes

		On success `AMMCreate` creates and authorizes `MPToken` object for each MPT token for AMM pseudo-account.

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gregtatcam commented Feb 5, 2026 •

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