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Feat: Add support for MeV shield extrinsics #242

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Merged
merged 4 commits into from
Nov 29, 2025
+46 −12
Merged

Feat: Add support for MeV shield extrinsics #242

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11bfdf5
adds mev shield handling
ibraheem-abe Nov 28, 2025
8d81613
Apply to sync, better handle possible success
thewhaleking Nov 28, 2025
199e26c
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thewhaleking Nov 28, 2025
69d1de0
Merge pull request #244 from opentensor/feat/thewhaleking/mev-extrins…
ibraheem-abe Nov 28, 2025
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21 changes: 15 additions & 6 deletions async_substrate_interface/async_substrate.py
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@thewhaleking thewhaleking Nov 28, 2025

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Looks fine, but please apply the same logic to sync-substrate aswell.

Original file line number Diff line number Diff line change
Expand Up @@ -280,8 +280,9 @@ async def process_events(self):
event["event"]["module_id"] == "System"
and event["event"]["event_id"] == "ExtrinsicSuccess"
):
self.__is_success = True
self.__error_message = None
if self.__error_message is None:
self.__is_success = True
self.__error_message = None

if "dispatch_info" in event["event"]["attributes"]:
self.__weight = event["event"]["attributes"]["dispatch_info"][
Expand All @@ -294,13 +295,21 @@ async def process_events(self):
elif (
event["event"]["module_id"] == "System"
and event["event"]["event_id"] == "ExtrinsicFailed"
) or (
event["event"]["module_id"] == "MevShield"
and event["event"]["event_id"] == "DecryptedRejected"
):
self.__is_success = False

dispatch_info = event["event"]["attributes"]["dispatch_info"]
dispatch_error = event["event"]["attributes"]["dispatch_error"]

self.__weight = dispatch_info["weight"]
if event["event"]["module_id"] == "System":
dispatch_info = event["event"]["attributes"]["dispatch_info"]
dispatch_error = event["event"]["attributes"]["dispatch_error"]
self.__weight = dispatch_info["weight"]
else:
# MEV shield extrinsics
dispatch_info = event["event"]["attributes"]["reason"]["post_info"]
dispatch_error = event["event"]["attributes"]["reason"]["error"]
self.__weight = event["event"]["attributes"]["reason"]["post_info"]["actual_weight"]

if "Module" in dispatch_error:
if isinstance(dispatch_error["Module"], tuple):
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