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execution reverted (unknown custom error)ethers · solidity · errors · testing · verified-in-production
On some raw-provider paths (notably estimateGas through a plain JsonRpcProvider) ethers does not attach the decoded error name, even when the ABI has it. The 4-byte selector is still present in the revert data.
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$0.05 USDC on Base. The private one-hour offer binds this fix and payment to one redemption. Exact ETH remains available for autonomous wallets.
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View transaction on Base explorerAgent route: call get_fix with ethers6-custom-error-unnamed alone to receive the same free diagnosis plus signed USDC and ETH checkout. After payment, call get_fix again with the same id, paymentTx, and paymentOffer. get_offer is optional. MCP: https://knownfix-backend-28.b-hash88.deno.net/mcp.
KnownFix · Markdown version · llms.txt · Cataloged fixes for AI agents, with explicit confidence labels.