{"uid":"cap_hCatbhHvNBaG-oHeYbsLp","slug":"halowerk-multi-at-sign-email-review-adf98658","name":"HALOWERK Multi-At-Sign Email Review","description":"Import repair: identify multiple at signs requiring source inspection. Reuses the existing email-list-clean motor. No SMTP probes or mailbox existence/catch-all proof. Local part case, plus and dots are never folded. Up to500 source rows;65s engine bound,70s article bound; one inflight native mail process. Price0.001 USDC plus existing motor quote, minimum0.004; supplied rows including rejected/duplicates billed.","url":"https://buero.halowerk.com/v1/baumarkt/mail/multi-at-sign-review?utm_source=zero.xyz","method":"POST","headers":{},"bodySchema":{"type":"object","properties":{"emails":{"type":"array","items":{"type":"string","maxLength":320,"minLength":1},"maxItems":500,"minItems":1}}},"responseSchema":{"type":"json"},"example":null,"exampleRequest":null,"tags":["x402"],"displayCostAmount":"0.004","displayCostAsset":"USDC","priceDynamic":false,"priceHint":null,"priceStatus":"priced","priceSource":"probe","requiresHandshake":false,"reviewCount":0,"rating":{"score":"0.00","successRate":"0.00","reviews":0,"stars":null,"state":"unrated"},"availabilityStatus":"unknown","priceObserved":null,"sessionDeposit":null,"pricing":{"kind":"static","summary":"$0.004/call","primary":{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.004","per":"call","confidence":"exact"},"accepted":[{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.004","per":"call","confidence":"exact"}]},"paymentMethods":[{"uid":"pm_6DLOyYVLX5ku-7yLWzIdR","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.004","costPer":"request","priority":0,"asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","unit":"request","depositMicros":null,"planRef":null}],"brandName":null,"brandSlug":null,"brandBaseUrl":null,"brandDocsUrl":null,"whatItDoes":"Validates a batch of email addresses for multiple at-sign (@) issues, flagging malformed emails that contain more than one @ character.","exampleAgentPrompt":"Can you check this list of email addresses for any that have more than one @ sign in them? Here are 50 emails from our import: user@domain.com, bad@@example.com, another@bad@email.net, ...","exampleUseCases":[{"title":"Pre-campaign email list cleanup","prompt":"I have a CSV of 300 subscriber emails I'm about to use for a newsletter blast — can you run them through the multi-at-sign checker to catch any malformed ones before I send?"},{"title":"CRM import quality gate","prompt":"We're importing a batch of 150 leads into our CRM and I need to flag any email addresses that have more than one @ symbol before they get saved — can you validate them?"},{"title":"User registration data audit","prompt":"Can you review these 80 email addresses collected from our sign-up form last week and tell me which ones have multiple @ signs so we can follow up with those users?"}],"resultDescription":"A JSON response indicating which email addresses in the submitted batch have multiple at-sign (@) characters, including validation status and any flagged malformed entries.","failureModes":["Empty emails array returns a 400 validation error","Emails array exceeding 500 items triggers a payload too large error","Non-string items in the emails array cause schema validation failure","Payment not included or insufficient USDC triggers a 402 Payment Required response","Individual email strings exceeding 320 characters are rejected"],"whenToPreferThis":"Use this endpoint when you need to batch-validate up to 500 email addresses specifically for the multi-at-sign defect (e.g. user@@domain.com or user@bad@domain.net) as part of a data hygiene pipeline, CRM import, or pre-send email list cleanup. It is purpose-built for this specific malformation check rather than general email syntax validation.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-10-26T00:31:17.278Z","isFirstParty":false,"canonicalSlug":"halowerk-multi-at-sign-email-review-adf98658"}