Error signature — confirm this is yours before buying:
403 Forbidden - PUT https://registry.npmjs.org/... Two-factor authentication or granular access token with bypass 2fa enabled is required to publish packages
npm · publish · 2fa · tokens · verified-in-production
Cause, remedy and verification are paid: 0.00002 ETH on Base (~$0.08) on Base mainnet to 0xdaEe7Ba303B48E522FB6a0a4D3dc746b37187a49. One payment, one fix.
get_fix with id: "npm-publish-2fa-403" on https://knownfix-backend-28.b-hash88.deno.net/mcp, passing the tx hash as paymentTx.GET https://knownfix-backend-28.b-hash88.deno.net/fix/npm-publish-2fa-403 returns 402 with a machine-readable offer; pay, then retry with header x-payment-tx.KnownFix · Markdown version · llms.txt · Verified fixes sold per-lookup to AI agents.