{"uid":"cap_eXsYppEkA2yiApLYj2wbw","slug":"power-pack-email-scorer-e2e8e1d8","name":"Power Pack Email Scorer","description":"Score an outreach email on subject quality, body quality, predicted open rate, spam risk, tone, length, personalization, and CTA clarity. Returns top 3 specific improvement suggestions and a stronger rewritten subject line. Useful for sales/marketing/recruiting AI agents that need QA before sending. Powered by Claude Haiku 4.5 with senior-copywriter system prompt.","url":"https://power-pack-x402.fly.dev/api/score-email","method":"POST","headers":{},"bodySchema":{"type":"object","properties":{"properties":{"type":"string"}}},"responseSchema":{"type":"json","example":{"ok":true,"score":{"tone":"salesy","verdict":"revise_then_send","spam_risk":3,"body_score":71,"cta_clarity":6,"subject_score":62,"top_improvements":[{"fix":"Reference their specific company milestone","area":"subject","issue":"Generic 'Quick question'"},{"fix":"Open with the prospect-specific hook","area":"opening","issue":"Starts with 'I hope this finds you well'"},{"fix":"Propose a specific 15-min slot","area":"cta","issue":"Vague 'let me know'"}],"length_assessment":"too_long","rewritten_subject":"Saw your Q3 launch — one idea on the onboarding flow","personalization_score":4,"predicted_open_rate_pct":28}}},"example":null,"exampleRequest":null,"tags":["x402"],"displayCostAmount":"0.01","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":"$0.01/call","primary":{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.01","per":"call","confidence":"exact"},"accepted":[{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.01","per":"call","confidence":"exact"}]},"paymentMethods":[{"uid":"pm_uKdxaN5HmuS3e1_4AC8zJ","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.01","costPer":"request","priority":0,"asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","unit":"request","depositMicros":null,"planRef":null}],"brandName":null,"brandSlug":null,"brandBaseUrl":null,"brandDocsUrl":null,"whatItDoes":"Scores an outreach email on multiple quality dimensions and returns improvement suggestions plus a rewritten subject line","exampleAgentPrompt":"Before I send this cold sales email, can you score it for me? Subject: 'Quick question about your Q4 pipeline' — Body: 'Hi Sarah, I noticed Acme Corp just expanded into EMEA. We help revenue teams like yours hit quota 30% faster. Worth a 15-min call this week?' I want scores on spam risk, open rate, CTA clarity, and your top 3 suggestions to make it better, plus a stronger subject line.","exampleUseCases":null,"resultDescription":"Returns an ok boolean plus a score object containing numeric/letter ratings for subject quality, body quality, predicted open rate, spam risk, tone, length, personalization, and CTA clarity, along with the top 3 specific actionable improvement suggestions and a rewritten stronger subject line.","failureModes":["Missing or empty email content returns an error field with ok: false","Extremely long email bodies may be truncated or rejected","Payment not included or insufficient USDC triggers 402 payment required","Malformed JSON input returns a validation error","Claude API timeout on the backend returns a 500 error with ok: false"],"whenToPreferThis":"Choose this endpoint when you need a fast, affordable ($0.01 per call) pre-send QA check on individual outreach emails — especially in sales, marketing, or recruiting workflows where email quality directly affects response rates. Prefer this over generic LLM prompting because it uses a specialized senior-copywriter system prompt and returns structured scores with concrete improvement suggestions, making it easy to programmatically gate or improve emails before delivery.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-09-15T00:37:19.475Z","isFirstParty":false}