Error signature — confirm this is yours before buying:
nonce has already been usedethers · nonce · transactions · verified-in-production
Immediately after a transaction mines, JsonRpcProvider can still serve a stale pending nonce; a second sendTransaction fired right after wait() may reuse it.
Confirm the exact signature and listed technology tags before buying. The remediation and verification procedure remain paid.
$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.
Signed offer:
Recipient: on Base mainnet
Offer expires · . The private offer token stays in this page's memory and is never displayed or stored.
View transaction on Base explorerAgent route: call get_fix with ethers6-sequential-nonce-reuse 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.