"MCP servers that work without API keys" matching MCP connectors:
GET /v1/connectors – MCP directory API referenceMatching Connector Tools:
Human-agent interface for projects: you prioritize and decide, your AI agents execute. Over MCP.
Turn calls and notes into process flow diagrams in Claude, ChatGPT, VS Code, Cursor, and Teams.
Patterns for designing and reviewing AI skills, agents, and multi-agent workflows. Find guidance on context economy, delegation, verification, and tool design; inspect claims, worked examples, maturity labels, and source references. Five read-only tools let agents discover relevant patterns, compare concise cards, read specific sections, and explore relationships. Hosted Streamable HTTP at https://agentic-atlas.dev/mcp/ — no installation, account, or API key required. Browse the atlas at https://agentic-atlas.dev/.
Spec-driven development MCP server: 8 phases, bi-directional traceability, 7 quality gates.
Immutable agent diagrams: create, edit, validate and render versioned diagrams over MCP.
40+ production-ready SwiftUI recipes for building full-stack iOS apps via MCP.
Project management methodology graph: route planning, stage-gate decisions and plan checks.
Draw Hola Cloud gives AI agents a visual canvas for creating and sharing diagrams. Through a simple MCP interface, agents can draw architecture diagrams, system designs, workflows, sequence diagrams, flowcharts, infrastructure layouts, and other visual explanations using shapes, connectors, text, icons, and images. The server lets an AI build a complete diagram programmatically and return a shareable Draw Hola Cloud URL that can be opened in the browser, edited, presented, or shared with others.
Idea to buildable dApp spec
Commission a multi-model AI spec committee from your agent; get rubric-scored, build-ready specs.
AI agent draws editable hand-drawn diagrams (flowchart, ER, architecture) via MCP, not static images
Create and edit architecture diagrams from your AI agent; get an SVG and a live editable canvas.
A comprehensive Model Context Protocol (MCP) server that enables AI assistants to control Unreal E…
Turn a typed idea into a PRD, research, brand kit, tech design, roadmap and a Jira board.
AI data-center design engine: size, validate & lay out Rubin-era data centers. Korea live.
Create, edit, save and export native flowcharts through OAuth with your FlowchartAI account.
Create and update saved Excalidraw diagrams through MCP. In MCP Apps hosts, view an interactive canvas, edit fullscreen, and save your work. OAuth with Google sign-in; English and Simplified Chinese. Website: https://draw.404040.net/
Your coding agent reads your team's architectural decisions and what happened when they shipped.
Flowcharts that people and agents edit together on one live canvas, exported as Mermaid.
EN Diagram — structural verification for concurrent systems. Pure math, no AI.
