{"uid":"cap_n9zZWM4W9ymd4nMXwj54t","slug":"proposalcheck-01a21357","name":"ProposalCheck","description":"Stress-test a product, feature, API, implementation, or business proposal before meaningful investment. ProposalCheck evaluates the core thesis, assumptions, differentiation, feasibility, economics, scope, dependencies, validation strategy, kill criteria, and recommended build sequence, then returns a structured green-light, revise, or rethink decision.","url":"https://launchcheck-x402.fly.dev/v1/proposal-check","method":"POST","headers":{},"bodySchema":{"type":"object","properties":{"proposal":{"type":"string","maxLength":32000,"minLength":40,"description":"Product, feature, API, implementation, or business proposal to stress-test before investing meaningful time or money."},"constraints":{"type":"array","items":{"type":"string","maxLength":300,"minLength":1},"default":[],"maxItems":10,"description":"Optional factual, strategic, technical, legal, or scope constraints the review must preserve."},"proposalType":{"enum":["product","feature","api-service","implementation","business","other"],"type":"string","default":"other","description":"Kind of proposal being reviewed."},"productContext":{"type":"string","maxLength":2000,"description":"Optional product, company, market, or technical context needed to interpret the proposal accurately."},"targetAudience":{"type":"string","maxLength":1000,"description":"Optional intended users, buyers, developers, or stakeholders whose needs matter to the decision."},"desiredDecision":{"type":"string","maxLength":500,"description":"Optional decision the review should inform, such as whether to green-light an MVP, technical spike, feature, or launch investment."}}},"responseSchema":null,"example":null,"exampleRequest":null,"tags":["x402"],"displayCostAmount":"1","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":"$1/call","primary":{"kind":"static","protocol":"x402","network":"base","amountUsd":"1","per":"call","confidence":"exact"},"accepted":[{"kind":"static","protocol":"x402","network":"base","amountUsd":"1","per":"call","confidence":"exact"}]},"paymentMethods":[{"uid":"pm_tonQAey17InA-6_w6jtQB","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"1","costPer":"request","priority":0,"asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","unit":"request","depositMicros":null,"planRef":null}],"brandName":null,"brandSlug":null,"brandBaseUrl":null,"brandDocsUrl":null,"whatItDoes":"Stress-tests a product, feature, API, implementation, or business proposal and returns a structured green-light, revise, or rethink decision with detailed analysis.","exampleAgentPrompt":"Can you stress-test my proposal to build a subscription analytics dashboard as a SaaS product targeting B2B fintech startups — the proposal type is 'product', the audience is finance teams at Series A companies, and I want to know if I should green-light an MVP build given my 3-month runway constraint?","exampleUseCases":[{"title":"Pre-commit feature feasibility check","prompt":"Before I ask my team to spend a sprint on this, can you stress-test my feature proposal: adding AI-powered expense categorization to our accounting app? It's a feature proposal targeting small business owners, and I want to know whether to green-light it or revise the scope given that we have no ML infrastructure today."},{"title":"Startup idea validation before funding pitch","prompt":"I'm about to pitch investors and I want to pressure-test my business proposal first — it's a two-sided marketplace for freelance industrial designers and hardware startups. Can you evaluate the core thesis, assumptions, economics, and differentiation, and tell me whether to go ahead or rethink before I commit more time?"},{"title":"API service viability before engineering sprint","prompt":"We're considering building a paid API service for real-time supply chain risk scoring. Can you stress-test this api-service proposal, with context that we're a 4-person team with 6 months of runway, targeting procurement teams at mid-market manufacturers, and the decision I need is whether to kick off a technical spike next week?"}],"resultDescription":"A structured evaluation covering the proposal's core thesis, key assumptions, differentiation, technical and economic feasibility, scope assessment, dependencies, validation strategy, kill criteria, and recommended build sequence — culminating in a green-light, revise, or rethink decision with supporting rationale.","failureModes":["Proposal text too short (under 40 characters) returns validation error","Proposal text exceeds 32,000 character limit returns payload error","Vague or underspecified proposals may yield low-confidence or generic recommendations","Missing product context for niche domains may reduce accuracy of feasibility and economics analysis","Payment failure via x402 protocol returns 402 status blocking the request"],"whenToPreferThis":"Choose ProposalCheck when you need a structured, multi-dimensional go/no-go decision on a proposal before committing engineering time, budget, or team resources — especially when you want explicit coverage of assumptions, economics, kill criteria, and build sequencing in a single call. Prefer it over generic LLM prompting when you need a repeatable, auditable evaluation format with a clear decision output.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-09-15T06:38:09.925Z","isFirstParty":false}