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[v10] Avoid negative balance to add_stake #3202

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Merged
basfroman merged 1 commit into from
Dec 9, 2025
Merged

[v10] Avoid negative balance to add_stake #3202

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7 changes: 7 additions & 0 deletions bittensor/core/extrinsics/asyncex/staking.py
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Original file line number Diff line number Diff line change
Expand Up @@ -89,6 +89,13 @@ async def add_stake_extrinsic(
subtensor.get_existential_deposit(block_hash=block_hash),
)

# Leave existential balance to keep key alive.
if old_balance <= existential_deposit:
return ExtrinsicResponse(
False,
f"Balance ({old_balance}) is not enough to cover existential deposit `{existential_deposit}`.",
).with_log()

# Leave existential balance to keep key alive.
if amount > old_balance - existential_deposit:
# If we are staking all, we need to leave at least the existential deposit.
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7 changes: 7 additions & 0 deletions bittensor/core/extrinsics/staking.py
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Original file line number Diff line number Diff line change
Expand Up @@ -86,6 +86,13 @@ def add_stake_extrinsic(
)
existential_deposit = subtensor.get_existential_deposit(block=block)

# Leave existential balance to keep key alive.
if old_balance <= existential_deposit:
return ExtrinsicResponse(
False,
f"Balance ({old_balance}) is not enough to cover existential deposit `{existential_deposit}`.",
).with_log()

# Leave existential balance to keep key alive.
if amount > old_balance - existential_deposit:
# If we are staking all, we need to leave at least the existential deposit.
Expand Down
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