{"uid":"cap_6phOccC_DJingnS2Y48pz","slug":"halowerk-buerowerk-email-plus-tag-disclosure-5f7bd63e","name":"HALOWERK buerowerk — Email Plus-Tag Disclosure","description":"HALOWERK buerowerk — bezahlte Endpunkte nach x402. Preise in USDC auf Base Mainnet.","url":"https://buero.halowerk.com/v1/baumarkt/mail/plus-tag-disclosure?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_9FdzgjWlyCiQMFFOJevKT","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":"Analyzes a list of email addresses and discloses whether they contain plus-tag (subaddress) components (e.g. user+tag@domain.com)","exampleAgentPrompt":"Check this list of email addresses for plus-tag subaddressing — I want to know which ones contain a plus sign in the local part: user+promo@example.com, jane@example.com, bob+test@domain.org.","exampleUseCases":[{"title":"Marketing list email hygiene check","prompt":"I have a mailing list of 200 email addresses and I want to know which ones are using plus-tag tricks like user+newsletter@gmail.com — can you scan them and flag the ones with subaddresses?"},{"title":"Detecting duplicate signups via plus-tagging","prompt":"We're seeing suspicious sign-ups on our platform and think people are abusing plus-tag emails to create multiple accounts — can you check these emails and tell me which ones have a plus tag in them?"},{"title":"Pre-send email validation for clean list","prompt":"Before I send out this campaign, can you check these email addresses and identify any that use plus-tag subaddressing so I can decide whether to include or exclude them?"}],"resultDescription":"Returns a JSON response indicating, for each submitted email address, whether a plus-tag (subaddress) was detected in the local part of the address. Likely includes fields such as the original email, a boolean flag for plus-tag presence, and possibly the extracted tag value.","failureModes":["Empty or missing emails array returns a validation error","Emails exceeding 320 characters or shorter than 1 character are rejected","Array exceeding 500 items may be rejected","Malformed JSON body returns a 400 error","Payment not provided or insufficient USDC balance triggers a 402 response"],"whenToPreferThis":"Use this endpoint when you need to programmatically detect plus-tag subaddressing (the user+tag@domain pattern) across a batch of up to 500 email addresses. Prefer this over manual regex parsing when you need a reliable, hosted service for email subaddress disclosure at scale, especially within an x402 micropayment workflow on Base Mainnet.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-10-18T00:51:54.440Z","isFirstParty":false,"canonicalSlug":"halowerk-buerowerk-email-plus-tag-disclosure-5f7bd63e"}