archon.audit.report
100.0
Mantle Mainnet
risk:63
verified
Feedback #19
For agent 97 on Mantle Mainnet · 2026-06-18
From
via
https://archonaudit.xyz/app/proofs
Block
tx ↗
#96834178
Off-chain feedback document
raw JSON
{
"chain": {
"name": "Mantle Mainnet",
"chainId": 5000
},
"report": {
"id": "bf960047-28af-408d-a755-c753c9333c47",
"scope": {
"pragma": "^0.8.24",
"network": "mantle-mainnet",
"lineCount": 70,
"protocols": [
"mETH",
"cmETH",
"USDY",
"Aave V3",
"Merchant Moe",
"Agni"
],
"sourceKind": "paste",
"aiReasoning": {
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"total": 18,
"misses": 18,
"batches": 9,
"reasons": {},
"skipped": 0,
"enriched": 18,
"provider": "tokenhub",
"timeoutMs": 75000,
"fallbackCount": 0,
"providersUsed": [
"OpenAI (gpt-4o-mini)"
]
},
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"gasOptimizer": {
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"mode": "calibrated-receipts",
"pricedAt": "2026-06-18T16:00:47.580Z",
"l2GasPriceWei": "50000100000",
"deployDataFeeMnt": "0.009433145709077192",
"deployDataFeeWei": "9433145709077192",
"calldataZeroBytes": 34,
"calibrationErrorPct": 0,
"calldataGasEstimate": 42280,
"calldataNonZeroBytes": 2634,
"creationBytecodeBytes": 2668
},
"daPricing": {
"model": {
"mode": "calibrated-receipts",
"samples": [
{
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"l1FeeWei": "699231354481640",
"l1GasUsed": "2530",
"zeroBytes": 135,
"l1GasPrice": "538782662",
"totalBytes": 228,
"blobGasUsed": "63200",
"blockNumber": "96205628",
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"l1BlobBaseFee": "330004069609410902",
"l1BaseFeeScalar": "169019",
"operatorFeeScalar": "100000000",
"calldataGasEstimate": 2028,
"l1BlobBaseFeeScalar": "0",
"operatorFeeConstant": "0",
"daFootprintGasScalar": "400"
},
{
"txHash": "0xb9ce87de86b212b91eb64012bbdab91014373da1f6d960470b340e1991a1a7c5",
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"l1GasPrice": "603039864",
"totalBytes": 1945,
"blobGasUsed": "556400",
"blockNumber": "96205472",
"nonZeroBytes": 1917,
"l1BlobBaseFee": "321479049246759320",
"l1BaseFeeScalar": "169019",
"operatorFeeScalar": "100000000",
"calldataGasEstimate": 30784,
"l1BlobBaseFeeScalar": "0",
"operatorFeeConstant": "0",
"daFootprintGasScalar": "400"
}
],
"validation": [
{
"txHash": "0x82d99588e5f1bff33d618743025d598445493032637de25844a67aa8e88088ef",
"errorPct": 0,
"actualL1FeeWei": "699231354481640",
"predictedL1FeeWei": "699231354481572"
},
{
"txHash": "0xb9ce87de86b212b91eb64012bbdab91014373da1f6d960470b340e1991a1a7c5",
"errorPct": 0,
"actualL1FeeWei": "6874261528561290",
"predictedL1FeeWei": "6874261528560500"
}
],
"sampleCount": 2,
"zeroByteFeeWei": "2736708878864",
"nonZeroByteFeeWei": "3545974793924",
"maxValidationErrorPct": 0,
"meanValidationErrorPct": 0
},
"source": "receipt-calibrated",
"groundTruthField": "l1Fee"
},
"sourceHash": "0x16b64e03063cbe1e40ad60fa348cdbd579842155c7549396118ef6364a007a7e",
"measurement": {
"forge": {
"ok": false,
"error": "Error (7576): Undeclared identifier.",
"command": "forge test --gas-report",
"attempted": true,
"gasReport": null
},
"source": "deterministic-estimate",
"status": "degraded",
"patches": [
{
"note": "Review-only patch is not auto-applied for measurement.",
"after": "Group adjacent bool/address/small uint fields together and place full-slot fields after them.",
"before": "uint8 public decimals = 18; … address public owner;",
"ruleId": "storage-packing",
"safety": "review",
"status": "skipped",
"l2GasDelta": 20000,
"l1DaDeltaWei": null
},
{
"note": "Review-only patch is not auto-applied for measurement.",
"after": "Use the smallest ABI-safe integer width only when the domain is bounded and documented.",
"before": "function approve(address spender, uint256 amount) external returns (bool) {",
"ruleId": "calldata-smaller-types",
"safety": "review",
"status": "skipped",
"l2GasDelta": null,
"l1DaDeltaWei": null
},
{
"note": "Review-only patch is not auto-applied for measurement.",
"after": "Use the smallest ABI-safe integer width only when the domain is bounded and documented.",
"before": "function transfer(address to, uint256 amount) external returns (bool) {",
"ruleId": "calldata-smaller-types",
"safety": "review",
"status": "skipped",
"l2GasDelta": null,
"l1DaDeltaWei": null
},
{
"note": "Review-only patch is not auto-applied for measurement.",
"after": "Use the smallest ABI-safe integer width only when the domain is bounded and documented.",
"before": "function transferFrom(address from, address to, uint256 amount) external returns (bool) {",
"ruleId": "calldata-smaller-types",
"safety": "review",
"status": "skipped",
"l2GasDelta": null,
"l1DaDeltaWei": null
},
{
"note": "Foundry measurement unavailable; deterministic rule estimate retained and clearly labeled.",
"after": "error INSUFFICIENTBALANCE(); … if (!(condition)) revert INSUFFICIENTBALANCE();",
"before": "require(balanceOf[msg.sender] >= amount, \"INSUFFICIENT_BALANCE\");",
"ruleId": "custom-errors",
"safety": "safe",
"status": "estimated",
"l2GasDelta": 120,
"l1DaDeltaWei": null
},
{
"note": "Foundry measurement unavailable; deterministic rule estimate retained and clearly labeled.",
"after": "error INSUFFICIENTBALANCE(); … if (!(condition)) revert INSUFFICIENTBALANCE();",
"before": "require(balanceOf[from] >= amount, \"INSUFFICIENT_BALANCE\");",
"ruleId": "custom-errors",
"safety": "safe",
"status": "estimated",
"l2GasDelta": 120,
"l1DaDeltaWei": null
},
{
"note": "Foundry measurement unavailable; deterministic rule estimate retained and clearly labeled.",
"after": "error INSUFFICIENTALLOWANCE(); … if (!(condition)) revert INSUFFICIENTALLOWANCE();",
"before": "require(allowance[from][msg.sender] >= amount, \"INSUFFICIENT_ALLOWANCE\");",
"ruleId": "custom-errors",
"safety": "safe",
"status": "estimated",
"l2GasDelta": 120,
"l1DaDeltaWei": null
},
{
"note": "Review-only patch is not auto-applied for measurement.",
"after": "address immutable public owner;",
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"safety": "review",
"status": "skipped",
"l2GasDelta": 2100,
"l1DaDeltaWei": null
},
{
"note": "Review-only patch is not auto-applied for measurement.",
"after": "uint256 cached = balanceOf[msg.sender]; // reuse cached value",
"before": "balanceOf[msg.sender] read 2 times",
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"safety": "review",
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"l2GasDelta": 100,
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},
{
"note": "Review-only patch is not auto-applied for measurement.",
"after": "uint256 cached = balanceOf[to]; // reuse cached value",
"before": "balanceOf[to] read 2 times",
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"safety": "review",
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"l2GasDelta": 100,
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},
{
"note": "Review-only patch is not auto-applied for measurement.",
"after": "uint256 cached = balanceOf[from]; // reuse cached value",
"before": "balanceOf[from] read 2 times",
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"safety": "review",
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"l2GasDelta": 100,
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},
{
"note": "Review-only patch is not auto-applied for measurement.",
"after": "uint256 cached = allowance[from]; // reuse cached value",
"before": "allowance[from] read 2 times",
"ruleId": "cache-repeated-sload",
"safety": "review",
"status": "skipped",
"l2GasDelta": 100,
"l1DaDeltaWei": null
}
],
"version": "archon.gasMeasurement.v1",
"measuredAt": "2026-06-18T16:00:47.887Z",
"rulesetHash": "3558cb9cc082b7449cc3e720e81800d7d9873e7f9763f298a1caeb0ba4b4fd82",
"contractHash": "16b64e03063cbe1e40ad60fa348cdbd579842155c7549396118ef6364a007a7e"
},
"opportunities": [
{
"id": "storage-packing",
"file": "MantleCmETH_Interface.sol",
"after": "Group adjacent bool/address/small uint fields together and place full-slot fields after them.",
"patch": {
"newText": " uint8 public decimals = 18; // REVIEW: reorder adjacent small storage fields with nearby small fields to reduce SSTORE/SLOAD slots",
"oldText": " uint8 public decimals = 18;"
},
"title": "Pack small storage variables into fewer slots",
"where": "MantleCmETH_Interface.sol:10",
"before": "uint8 public decimals = 18; … address public owner;",
"safety": "review",
"newText": " uint8 public decimals = 18; // REVIEW: reorder adjacent small storage fields with nearby small fields to reduce SSTORE/SLOAD slots",
"oldText": " uint8 public decimals = 18;",
"category": "storage",
"severity": "medium",
"lineStart": 10,
"rationale": "Storage slot packing can remove entire SSTORE/SLOAD slots but changes layout, so upgradeable contracts need manual review.",
"confidence": 0.64,
"estL1Delta": null,
"estL2Delta": 20000,
"annualizedBasis": "Static deterministic estimate. Exact runtime deltas require queued Foundry snapshots with representative inputs.",
"estimatedGasSaved": 20000,
"estimatedDataBytesSaved": null
},
{
"id": "calldata-smaller-types",
"file": "MantleCmETH_Interface.sol",
"after": "Use the smallest ABI-safe integer width only when the domain is bounded and documented.",
"patch": {
"newText": " function approve(address spender, uint256 amount) external returns (bool) { // REVIEW: bounded calldata params may be packable/smaller in structs or encoded batches",
"oldText": " function approve(address spender, uint256 amount) external returns (bool) {"
},
"title": "Review calldata parameter width",
"where": "MantleCmETH_Interface.sol:32",
"before": "function approve(address spender, uint256 amount) external returns (bool) {",
"safety": "review",
"newText": " function approve(address spender, uint256 amount) external returns (bool) { // REVIEW: bounded calldata params may be packable/smaller in structs or encoded batches",
"oldText": " function approve(address spender, uint256 amount) external returns (bool) {",
"category": "calldata",
"severity": "low",
"lineStart": 32,
"rationale": "For individual ABI params uint256 still occupies a full word, but bounded types help packed structs/batches and prevent redundant calldata.",
"confidence": 0.55,
"estL1Delta": 16,
"estL2Delta": null,
"annualizedBasis": "Receipt-calibrated DA estimate for calldata/data bytes; exact deltas require V2.1.2 harness measurement.",
"estimatedGasSaved": null,
"estimatedDataBytesSaved": 16
},
{
"id": "calldata-smaller-types",
"file": "MantleCmETH_Interface.sol",
"after": "Use the smallest ABI-safe integer width only when the domain is bounded and documented.",
"patch": {
"newText": " function transfer(address to, uint256 amount) external returns (bool) { // REVIEW: bounded calldata params may be packable/smaller in structs or encoded batches",
"oldText": " function transfer(address to, uint256 amount) external returns (bool) {"
},
"title": "Review calldata parameter width",
"where": "MantleCmETH_Interface.sol:39",
"before": "function transfer(address to, uint256 amount) external returns (bool) {",
"safety": "review",
"newText": " function transfer(address to, uint256 amount) external returns (bool) { // REVIEW: bounded calldata params may be packable/smaller in structs or encoded batches",
"oldText": " function transfer(address to, uint256 amount) external returns (bool) {",
"category": "calldata",
"severity": "low",
"lineStart": 39,
"rationale": "For individual ABI params uint256 still occupies a full word, but bounded types help packed structs/batches and prevent redundant calldata.",
"confidence": 0.55,
"estL1Delta": 16,
"estL2Delta": null,
"annualizedBasis": "Receipt-calibrated DA estimate for calldata/data bytes; exact deltas require V2.1.2 harness measurement.",
"estimatedGasSaved": null,
"estimatedDataBytesSaved": 16
},
{
"id": "calldata-smaller-types",
"file": "MantleCmETH_Interface.sol",
"after": "Use the smallest ABI-safe integer width only when the domain is bounded and documented.",
"patch": {
"newText": " function transferFrom(address from, address to, uint256 amount) external returns (bool) { // REVIEW: bounded calldata params may be packable/smaller in structs or encoded batches",
"oldText": " function transferFrom(address from, address to, uint256 amount) external returns (bool) {"
},
"title": "Review calldata parameter width",
"where": "MantleCmETH_Interface.sol:50",
"before": "function transferFrom(address from, address to, uint256 amount) external returns (bool) {",
"safety": "review",
"newText": " function transferFrom(address from, address to, uint256 amount) external returns (bool) { // REVIEW: bounded calldata params may be packable/smaller in structs or encoded batches",
"oldText": " function transferFrom(address from, address to, uint256 amount) external returns (bool) {",
"category": "calldata",
"severity": "low",
"lineStart": 50,
"rationale": "For individual ABI params uint256 still occupies a full word, but bounded types help packed structs/batches and prevent redundant calldata.",
"confidence": 0.55,
"estL1Delta": 16,
"estL2Delta": null,
"annualizedBasis": "Receipt-calibrated DA estimate for calldata/data bytes; exact deltas require V2.1.2 harness measurement.",
"estimatedGasSaved": null,
"estimatedDataBytesSaved": 16
},
{
"id": "custom-errors",
"file": "MantleCmETH_Interface.sol",
"after": "error INSUFFICIENTBALANCE(); … if (!(condition)) revert INSUFFICIENTBALANCE();",
"patch": {
"newText": " if (!(balanceOf[msg.sender] >= amount)) revert INSUFFICIENTBALANCE();",
"oldText": " require(balanceOf[msg.sender] >= amount, \"INSUFFICIENT_BALANCE\");"
},
"title": "Replace long revert string with custom error",
"where": "MantleCmETH_Interface.sol:41",
"before": "require(balanceOf[msg.sender] >= amount, \"INSUFFICIENT_BALANCE\");",
"safety": "safe",
"newText": " if (!(balanceOf[msg.sender] >= amount)) revert INSUFFICIENTBALANCE();",
"oldText": " require(balanceOf[msg.sender] >= amount, \"INSUFFICIENT_BALANCE\");",
"category": "deployment",
"severity": "info",
"lineStart": 41,
"rationale": "Custom errors reduce deployment bytecode and revert-path gas while preserving typed failure semantics.",
"confidence": 0.9,
"estL1Delta": 20,
"estL2Delta": 120,
"annualizedBasis": "Static deterministic estimate. Exact runtime deltas require queued Foundry snapshots with representative inputs.",
"estimatedGasSaved": 120,
"estimatedDataBytesSaved": 20
},
{
"id": "custom-errors",
"file": "MantleCmETH_Interface.sol",
"after": "error INSUFFICIENTBALANCE(); … if (!(condition)) revert INSUFFICIENTBALANCE();",
"patch": {
"newText": " if (!(balanceOf[from] >= amount)) revert INSUFFICIENTBALANCE();",
"oldText": " require(balanceOf[from] >= amount, \"INSUFFICIENT_BALANCE\");"
},
"title": "Replace long revert string with custom error",
"where": "MantleCmETH_Interface.sol:52",
"before": "require(balanceOf[from] >= amount, \"INSUFFICIENT_BALANCE\");",
"safety": "safe",
"newText": " if (!(balanceOf[from] >= amount)) revert INSUFFICIENTBALANCE();",
"oldText": " require(balanceOf[from] >= amount, \"INSUFFICIENT_BALANCE\");",
"category": "deployment",
"severity": "info",
"lineStart": 52,
"rationale": "Custom errors reduce deployment bytecode and revert-path gas while preserving typed failure semantics.",
"confidence": 0.9,
"estL1Delta": 20,
"estL2Delta": 120,
"annualizedBasis": "Static deterministic estimate. Exact runtime deltas require queued Foundry snapshots with representative inputs.",
"estimatedGasSaved": 120,
"estimatedDataBytesSaved": 20
},
{
"id": "custom-errors",
"file": "MantleCmETH_Interface.sol",
"after": "error INSUFFICIENTALLOWANCE(); … if (!(condition)) revert INSUFFICIENTALLOWANCE();",
"patch": {
"newText": " if (!(allowance[from][msg.sender] >= amount)) revert INSUFFICIENTALLOWANCE();",
"oldText": " require(allowance[from][msg.sender] >= amount, \"INSUFFICIENT_ALLOWANCE\");"
},
"title": "Replace long revert string with custom error",
"where": "MantleCmETH_Interface.sol:53",
"before": "require(allowance[from][msg.sender] >= amount, \"INSUFFICIENT_ALLOWANCE\");",
"safety": "safe",
"newText": " if (!(allowance[from][msg.sender] >= amount)) revert INSUFFICIENTALLOWANCE();",
"oldText": " require(allowance[from][msg.sender] >= amount, \"INSUFFICIENT_ALLOWANCE\");",
"category": "deployment",
"severity": "info",
"lineStart": 53,
"rationale": "Custom errors reduce deployment bytecode and revert-path gas while preserving typed failure semantics.",
"confidence": 0.9,
"estL1Delta": 22,
"estL2Delta": 120,
"annualizedBasis": "Static deterministic estimate. Exact runtime deltas require queued Foundry snapshots with representative inputs.",
"estimatedGasSaved": 120,
"estimatedDataBytesSaved": 22
},
{
"id": "immutable-constant",
"file": "MantleCmETH_Interface.sol",
"after": "address immutable public owner;",
"patch": {
"newText": " address immutable public owner;",
"oldText": " address public owner;"
},
"title": "Mark never-changing value constant or immutable",
"where": "MantleCmETH_Interface.sol:13",
"before": "address public owner;",
"safety": "review",
"newText": " address immutable public owner;",
"oldText": " address public owner;",
"category": "storage",
"severity": "info",
"lineStart": 13,
"rationale": "Constants/immutables avoid storage reads for values that do not change after deployment.",
"confidence": 0.62,
"estL1Delta": null,
"estL2Delta": 2100,
"annualizedBasis": "Static deterministic estimate. Exact runtime deltas require queued Foundry snapshots with representative inputs.",
"estimatedGasSaved": 2100,
"estimatedDataBytesSaved": null
},
{
"id": "cache-repeated-sload",
"file": "MantleCmETH_Interface.sol",
"after": "uint256 cached = balanceOf[msg.sender]; // reuse cached value",
"patch": {
"newText": "balanceOf[msg.sender]",
"oldText": "balanceOf[msg.sender]"
},
"title": "Cache repeated storage read",
"where": "MantleCmETH_Interface.sol:41",
"before": "balanceOf[msg.sender] read 2 times",
"safety": "review",
"newText": "balanceOf[msg.sender]",
"oldText": "balanceOf[msg.sender]",
"category": "storage",
"severity": "info",
"lineStart": 41,
"rationale": "Repeated SLOADs should be cached in stack/memory when state cannot change between reads.",
"confidence": 0.7,
"estL1Delta": null,
"estL2Delta": 100,
"annualizedBasis": "Static deterministic estimate. Exact runtime deltas require queued Foundry snapshots with representative inputs.",
"estimatedGasSaved": 100,
"estimatedDataBytesSaved": null
},
{
"id": "cache-repeated-sload",
"file": "MantleCmETH_Interface.sol",
"after": "uint256 cached = balanceOf[to]; // reuse cached value",
"patch": {
"newText": "balanceOf[to]",
"oldText": "balanceOf[to]"
},
"title": "Cache repeated storage read",
"where": "MantleCmETH_Interface.sol:44",
"before": "balanceOf[to] read 2 times",
"safety": "review",
"newText": "balanceOf[to]",
"oldText": "balanceOf[to]",
"category": "storage",
"severity": "info",
"lineStart": 44,
"rationale": "Repeated SLOADs should be cached in stack/memory when state cannot change between reads.",
"confidence": 0.7,
"estL1Delta": null,
"estL2Delta": 100,
"annualizedBasis": "Static deterministic estimate. Exact runtime deltas require queued Foundry snapshots with representative inputs.",
"estimatedGasSaved": 100,
"estimatedDataBytesSaved": null
},
{
"id": "cache-repeated-sload",
"file": "MantleCmETH_Interface.sol",
"after": "uint256 cached = balanceOf[from]; // reuse cached value",
"patch": {
"newText": "balanceOf[from]",
"oldText": "balanceOf[from]"
},
"title": "Cache repeated storage read",
"where": "MantleCmETH_Interface.sol:52",
"before": "balanceOf[from] read 2 times",
"safety": "review",
"newText": "balanceOf[from]",
"oldText": "balanceOf[from]",
"category": "storage",
"severity": "info",
"lineStart": 52,
"rationale": "Repeated SLOADs should be cached in stack/memory when state cannot change between reads.",
"confidence": 0.7,
"estL1Delta": null,
"estL2Delta": 100,
"annualizedBasis": "Static deterministic estimate. Exact runtime deltas require queued Foundry snapshots with representative inputs.",
"estimatedGasSaved": 100,
"estimatedDataBytesSaved": null
},
{
"id": "cache-repeated-sload",
"file": "MantleCmETH_Interface.sol",
"after": "uint256 cached = allowance[from]; // reuse cached value",
"patch": {
"newText": "allowance[from]",
"oldText": "allowance[from]"
},
"title": "Cache repeated storage read",
"where": "MantleCmETH_Interface.sol:53",
"before": "allowance[from] read 2 times",
"safety": "review",
"newText": "allowance[from]",
"oldText": "allowance[from]",
"category": "storage",
"severity": "info",
"lineStart": 53,
"rationale": "Repeated SLOADs should be cached in stack/memory when state cannot change between reads.",
"confidence": 0.7,
"estL1Delta": null,
"estL2Delta": 100,
"annualizedBasis": "Static deterministic estimate. Exact runtime deltas require queued Foundry snapshots with representative inputs.",
"estimatedGasSaved": 100,
"estimatedDataBytesSaved": null
}
]
}
},
"scanId": "1b975099-f44c-4be9-a072-9252867431ff",
"createdAt": "2026-06-18T16:03:44.490Z",
"riskScore": 63,
"contractName": "MantleCmETH_Interface",
"severityCounts": {
"low": 8,
"high": 0,
"info": 9,
"medium": 1,
"critical": 0
},
"executiveSummary": "Archon completed a read-only Mantle Mainnet audit of MantleCmETH_Interface and found 18 deterministic findings. The highest-priority issue is Naming Convention, with risk score 63/100 based on severity-weighted findings. The contract naming conventions are not fully aligned with common Solidity practices. Review the recommended fixes and run regression tests before deployment."
},
"schema": "archon.proof.metadata.v1",
"erc8004": {
"verifiedConfig": true,
"agentIdentityRef": "eip155:5000:0x8004A169FB4a3325136EB29fA0ceB6D2e539a432:97",
"identityRegistry": "0x8004A169FB4a3325136EB29fA0ceB6D2e539a432",
"reputationRegistry": "0x8004BAa17C55a88189AE136b182e5fdA19dE9b63",
"validationRegistry": null
},
"product": "Archon",
"findings": [
{
"id": "d9fe89f1-ce35-47ce-8772-04d222b8b153",
"title": "Naming Convention",
"category": "naming-convention",
"location": {
"file": "MantleCmETH_Interface.sol",
"lineEnd": 71,
"lineStart": 7
},
"severity": "info"
},
{
"id": "6f9f5a46-2300-4fc9-a645-cee7859186c9",
"title": "Constable States",
"category": "constable-states",
"location": {
"file": "MantleCmETH_Interface.sol",
"lineEnd": 9,
"lineStart": 9
},
"severity": "low"
},
{
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