An MCP server provided by Pipeworx that offers a tool to generate instant, humorous Y Combinator-style rejections for any startup idea, including insincere encouragement. It is a free, keyless service with a rate limit of 50 calls per day, accessible via JSON-RPC 2.0 over HTTP POST.
- Operator: Pipeworx
- Endpoint: https://gateway.pipeworx.io/yc-rejection/mcp
- Transport: streamable-http
- Sign-in: No sign-in
- Category: AI and machine learning
- Use cases: Generate instant YC-style rejection for a startup idea; Get humorous, insincere encouragement for a concept; Test AI agent responses with fictional rejection scenarios
- Tools: ask_pipeworx, ask_pipeworx_beta, ask_pipeworx_grounded, search_within, deep_research, discover_tools, resolve_entity, compare_entities, subscribe, unsubscribe, list_subscriptions, recent_alerts, entity_profile, recent_changes, validate_claim, company_facts, scan_dependency, bet_research, polymarket_arbitrage, polymarket_edges, polymarket_kalshi_spread, polymarket_fill_risk, polymarket_edge_tracker, kalshi_weather_edge, resolution_audit, resolution_diff, release_calendar_markets, pipeworx_trending, suggest_questions, generate_llms_txt, ai_visibility_check, scan_competitor_ai_presence, pipeworx_feedback, remember, recall, forget, yc_rejection_generate
- Documentation: https://pipeworx.io/packs/yc-rejection
- Directory listing: https://koskamo.com/explore/pipeworx-yc-rejection-mcp
- Also known as: Pipeworx YC Rejection MCP MCP; pipeworx-yc-rejection-mcp