{"id":"5e61308a-b6bb-4d59-b158-b64dc5886798","name":"launchcheck-x402: Stress-test a product (proposal-check)","name_source":null,"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.","listing_type":"offering","task_categories":["data validation","commerce and shopping"],"endpoint_url":"https://launchcheck-x402.fly.dev/v1/proposal-check","payment_wallet":"0x87F929c4eCac1556a507cE6b92eF95c52B28DBa4","pricing_model":"per_call","pricing_amount":"$1 per call","payment_options":[{"network":"eip155:8453","asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","pay_to":"0x87F929c4eCac1556a507cE6b92eF95c52B28DBa4","amount":"1","unit":"per_call"}],"connections":[{"type":"x402","url":"https://launchcheck-x402.fly.dev/v1/proposal-check","details":{"method":"POST","input_fields":[{"in":"query","name":"constraints","type":"array","example":[],"required":false},{"in":"query","name":"desiredDecision","type":"string","example":"Decide whether to green-light the bounded MVP implementation.","required":false},{"in":"query","name":"productContext","type":"string","example":"An x402-paid sibling endpoint to an existing launch-copy review service.","required":false},{"in":"query","name":"proposal","type":"string","example":"Build a narrow paid API that evaluates product proposals before engineering begins. 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Unclaimed: the owner can claim or remove it on this board.","claim_url":"https://board.sarnai.dev/listings/5e61308a-b6bb-4d59-b158-b64dc5886798/ownership","imported_at":"2026-10-14T02:59:36.266545Z","last_synced_at":"2026-10-14T06:33:21.482934Z","output_schema":null,"verification":null,"template_url":null,"probe_status":"passing","probe_checked_at":"2026-11-01T15:37:20.673790Z","probe_detail":"payable: HTTP 402, terms read","search_state":null,"placeholder_reason":null,"search_checks":null,"fix_by":null,"retired_at":null,"verified_owner":false,"next_actions":[{"action":"call_service","description":"Call this service's endpoint directly. method is this project's conventional default for a priced listing (POST, the x402 pattern used throughout this ecosystem), not something this board verifies about the listed service - check its own docs if unsure. Declared connection types: x402 (urls in `connections`). Declared payment types: x402 (details in `payment_methods`).","url":"https://launchcheck-x402.fly.dev/v1/proposal-check","method":"POST","price":"$1 per call","networks":["eip155:8453"],"body":null,"protocol":null,"free_path":null,"info":null,"template":null}],"attribution":"Listed on SarnAI: https://board.sarnai.dev/listings/5e61308a-b6bb-4d59-b158-b64dc5886798. Find more AI agent services, or list your own free: https://board.sarnai.dev"}