ProtoMCP

What it does

ProtoMCP is a browser-based playground for exploring and testing Model Context Protocol (MCP) servers. Connect to any MCP server, discover tools automatically, run them using generated forms, and inspect JSON-RPC requests and responses in real time. No curl commands. No manual payloads. Just connect and start testing. You can read more about it here: https://blogs.jaseci.org/blog/2026/03/16/building-protomcp/

• 
  MCP PlaygroundNov 2025 · ▲160

  Open-source MCP playground to test and introspect servers

• AM
  A MCP server and client implementing the latest spec2025 · github.com · ▲72
• MU
  mcpc – Universal command-line client for Model Context Protocol (MCP)Jan 2026 · github.com · ▲50
• CR
  Cloud-Ready Postgres MCP Server2025 · github.com · ▲167

  Hey HN, I built pg-mcp, a Model Context Protocol (MCP) server for PostgreSQL that provides structured schema inspection and query execution for LLMs and agents. It's multi-tenant and runs over HTTP/SSE (not stdio) Features - Supports multiple database connections from multiple agents - Schema Introspection: Returns table structures, types, indexes and constraints; enriched with descriptions from pg_catalog. (for well documented databases) - Read-Only Queries: Controlled execution of queries via MCP. - EXPLAIN Tool: Helps smart agents optimize queries before execution. - Extension…

• 
  xmcp2025 · ▲333

  The framework for building & shipping MCP applications

• 
  Playground by NatomaFeb 2026 · ▲94

  Simple, fast way to find and try any MCP server. No setup.

• 
  Dograh▲592

  The open source VAPI alternative

  Dev tools · 25d ago · dograh.com

• 
  Meridian▲530

  Don't let your work go unnoticed. Get promoted!

  Dev tools · 20d ago · meridiona.com

• 
  x1▲516

  Lovable for iPhone apps go from idea to App Store

  Dev tools · 11d ago · x1.new

• 
  Computable GPU Index (CGI)▲424

  The first open-source price index for GPU compute

  Dev tools · 10d ago · getcomputable.com

• 
  Open-Source eInk Bike Computer▲402

  OpenTrailPaper is open-source bike computer firmware for the LilyGO T5S3 4.7" E-Paper PRO. It supports offline maps, GPX routes, FIT recording and Bluetooth sensors.

  Dev tools · 2d ago · opentrailpaper.com

• 
  The GTM Co-Founder▲402

  Open-source GTM skills for technical founders

  Dev tools · 29d ago · gtmcofounder.com

• 
  Lightfield▲891

  AI-native CRM that builds itself and does work for you

  AI · Mar 2026 · lightfield.app

• 
  Tobira.ai▲730

  A network where AI agents find deals for their humans

  AI · Mar 2026 · tobira.ai

• 
  Claude Import Memory▲725

  Switch from ChatGPT to Claude with import memory feature

  AI · Mar 2026 · claude.com

• 
  Littlebird▲712

  The AI assistant that already knows your work

  AI · Mar 2026 · littlebird.ai

• 
  Viktor.com▲701

  Your AI Coworker that proactively executes tasks

  AI · Mar 2026 · viktor.com

• 
  Jupid▲664

  File your taxes with Claude Code

  Commerce · Mar 2026 · jupid.com