Show HN: Promptware – Bidirectional Code Translator (Python/Go/Rust/Node/.NET) (github.com)

Promptware is a new framework that claims to be the first bidirectional universal code translator and production-ready MCP (Model Context Protocol) framework: it parses service code in five languages (Python, Node.js, Go, Rust, C#/.NET) into a universal PW DSL and can regenerate equivalent, deployment-ready servers in any of those languages. That lets teams migrate microservices, share specs, or let AI agents reason about code without manual rewrites. The project emphasizes production hardening out of the box—JSON-RPC 2.0 (MCP) support, standard error codes, health (/health, /ready), rate limiting (default 100 req/min), CORS/security headers, graceful shutdown, observability (structured logs, metrics, OpenTelemetry for Python), and auto-generated tests and client SDKs with retries and circuit breakers. Technically, Promptware includes reverse parsers that auto-detect file extensions and turn ASTs into a PW intermediate representation, plus forward generators that render FastAPI/Express/net/http/Actix/ASP.NET patterns. The repo reports 20 cross-language translation paths (5×5 minus diagonals) with 100% pass on its 44/44 bidirectional tests, 190 tool adapters (38 tool categories), MCP-native middleware, and CI/CLI tooling for validation, generation, and load testing. Practical caveats noted: it’s optimized for microservices and JSON‑RPC/MCP workflows (not for custom protocols or deeply hand-tuned, language-specific optimizations). The code and CLI are available on GitHub for evaluation.