DF-24352 Reduce LimitDefault to 500_000 on Mantle#22252
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DF-24352 Reduce LimitDefault to 500_000 on Mantle#22252
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Pull request overview
Risk Rating: MEDIUM
This PR updates the Mantle EVM CCIP chain TOML configs to reflect Mantle’s post-Arsia fee model (L2-only execution gas) by lowering the configured default gas limit and removing a misleading LimitMax setting.
Changes:
- Updates Mantle Mainnet/Sepolia
GasEstimator.LimitDefaultand removesLimitMax. - Adjusts accompanying inline documentation/comments (including a typo fix).
- Adds a changeset describing the Mantle gas limit default change.
Scrupulous human review recommended (operational correctness):
- Confirm the intended
LimitDefaultvalue (PR metadata says 200_000, configs currently set 500_000) and validate it against observed gas usage on Mantle post-Arsia to avoid underestimating and causing TX failures.
Reviewed changes
Copilot reviewed 3 out of 3 changed files in this pull request and generated 4 comments.
| File | Description |
|---|---|
| ccip/config/evm/Mantle_Sepolia.toml | Updates Mantle Sepolia gas estimator limits/comments (and removes LimitMax). |
| ccip/config/evm/Mantle_Mainnet.toml | Updates Mantle Mainnet gas estimator limits/comments (and removes LimitMax). |
| .changeset/clean-horses-hear.md | Adds a release note describing the Mantle LimitDefault change. |
vlfig
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mchain0
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May 6, 2026
mainnet and sepolia gas_used for transmissions is ~117600 500k is more than enough and in line w/ others BumpPercent dominates BumpMin - stays the same
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Following the Mantle Arsia upgrade,
eth_estimateGasnow returns pure L2 execution gas (no amortised L1 data costs anymore). Our transactions use about ~117,600. After INCIDENT-2427 NOPs overrodeLimitDefaultto500_000.Still a ~4× overestimate but nothing that would cause issues, and is in line with other EVMs so for consistency that's what we're picking here.
BumpPercent(20) dominates overBumpMin- no point in changing it. Removed pointless chain-override for testnet.LimitMaxisn't used inBlockHistoryEstimator- its presence is misleading, so removed.Requires
smartcontractkit/chainlink-evm#460
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