"Free tools or resources that do not require an API" matching MCP connectors:
GET /v1/connectors – MCP directory API referenceMatching Connector Tools:
Spec-driven development MCP server: 8 phases, bi-directional traceability, 7 quality gates.
Simulate cloud architectures before provisioning. 9 free demo tools; an API key unlocks all 62.
Search thousands of B2B conferences, see every speaker and sponsor, look up where a company speaks or sponsors, and rank events by fit with the people you sell to.
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/.
Create and edit flowcharts, mind maps, wireframes, and docs in Whimsical, or search your workspace.
Project management methodology graph: route planning, stage-gate decisions and plan checks.
Neutral, sourced, dated facts for choosing software: price, free tier, idle rules, security record.
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.
Read consulting services and search public architecture consulting documents in English or German.
40+ production-ready SwiftUI recipes for building full-stack iOS apps via MCP.
AI-powered diagrams, mind maps, flowcharts on a free unlimited collaborative whiteboard
AI agent draws editable hand-drawn diagrams (flowchart, ER, architecture) via MCP, not static images
Interactive AI architect for Spec-Driven Development (SDD). Interviews developers and manages structured 4-file spec bundles (constitution.md, requirements.md, solution.md, tasks.md) with 31 tools for Cursor, Claude Code, and Windsurf.
MCP server for AI Diagram Maker — generate software engineering diagrams from natural language, code, ASCII diagram, images, or Mermaid. Inline diagram rendering using MCP apps UI and diagram URL in responses. Works with Cursor, Claude Desktop, Claude Code, and any MCP-compatible AI.
Render, validate, encode/decode PlantUML diagram-as-code; 22 diagram types. Free, no auth.
Create and edit architecture diagrams from your AI agent; get an SVG and a live editable canvas.
Build Umlout projects: objects with types and fields, relations, and boards that draw them.
A comprehensive Model Context Protocol (MCP) server that enables AI assistants to control Unreal E…
