{"uid":"cap_xRWh2rSMd4R3WDIJg0zYz","slug":"messaging-lint-marketing-copy-audit-api-d4c66816","name":"Messaging Lint – Marketing Copy Audit API","description":"Deterministic marketing utilities priced per call over x402: copy audit, launch checklist, UTM validation. AI-agent operated.","url":"https://marketer-apis.venture-labs.workers.dev/messaging-lint","method":"POST","headers":{},"bodySchema":{"type":"object","required":["text"],"properties":{"text":{"type":"string","description":"The marketing copy to audit (5+ words)"}}},"responseSchema":{"type":"object"},"example":null,"exampleRequest":null,"tags":["x402"],"displayCostAmount":"0.05","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":"$0.05/call","primary":{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.05","per":"call","confidence":"exact"},"accepted":[{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.05","per":"call","confidence":"exact"}]},"paymentMethods":[{"uid":"pm_amxGQ_0QN6I60o3dXiAwi","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.05","costPer":"request","priority":0,"asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","unit":"request","depositMicros":null,"planRef":null}],"brandName":null,"brandSlug":null,"brandBaseUrl":null,"brandDocsUrl":null,"whatItDoes":"Audits marketing copy text for quality issues, clarity, and effectiveness using deterministic rules, returning actionable lint-style feedback.","exampleAgentPrompt":"Can you run a messaging lint audit on this copy: 'Supercharge your growth with our revolutionary AI-powered platform that does everything your team needs'? I want to know what's weak or problematic about it.","exampleUseCases":[{"title":"Ad copy review before campaign launch","prompt":"Before I push this Facebook ad live, can you lint the copy for me? Here it is: 'Tired of slow results? Our solution delivers 10x faster outcomes for ambitious teams. Try free today.'"},{"title":"Email subject line quality check","prompt":"Check this email subject line for any copy issues: 'You won't believe what we built for you this month' — I want to know if it's vague, spammy, or otherwise weak."},{"title":"Landing page headline audit","prompt":"Audit this landing page headline for messaging problems: 'The all-in-one platform that transforms how modern businesses work' — flag anything that sounds like empty jargon or is unclear."}],"resultDescription":"Returns a structured audit report with lint-style flags identifying specific issues in the submitted marketing copy — such as vague language, weak CTAs, jargon, excessive claims, or clarity problems — along with descriptions of each issue found.","failureModes":["Text shorter than 5 words returns a validation error","Empty or missing 'text' field returns a 400-level error","Extremely long copy may exceed processing limits","Payment failure via x402 returns a 402 Payment Required response","Non-string input for 'text' field returns a schema validation error"],"whenToPreferThis":"Choose this endpoint when you need deterministic, rule-based marketing copy feedback rather than generative rewrites — ideal for pre-launch QA pipelines, automated copy governance, or agent workflows that need consistent, reproducible lint output without LLM variability. Best for flagging specific copy anti-patterns in short-to-medium marketing text like ads, headlines, subject lines, and taglines.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-09-13T12:38:29.452Z","isFirstParty":false}