"Tools or methods for learning and visualizing concepts with diagrams" matching MCP connectors:

Search public open-source code, documentation, metadata, vulnerabilities, changelogs, and examples.

MCP-native open-source Notion alternative: read & write pages, databases and kanban boards.

Smarter Weather MCP: forecasts, alerts, outlooks, observations, AQI, grids, and map imagery.

Read, search, send, organize, draft and schedule email across your inboxes from any MCP client.

DMARC analytics and domain onboarding for AI assistants — health, SPF/DKIM, compliance, anomalies.

Generate images, video & speech with Nano Banana, Veo, Omni and Gemini TTS. Pay as you go.

Project portfolio management for PMOs. Alternative to Microsoft Project Online. OAuth + PAT.

SSRF-safe web intelligence: 4 outcomes, 43 paid x402 tools, 3 free tools and a URL preview.

Operate smplkit from your agent: feature flags, config, logging, audit, and scheduled jobs.

Build and edit landing pages and websites from your AI assistant, and pull how they are performing.

63 tools for Apple Health, Fitbit, Oura & Health Connect data in Claude, ChatGPT, Grok & Mistral.

Millions of dated buying and momentum signals: who raised, who's hiring, what changed and when

DocForge turns documents into structured data. Upload a PDF, image, or Office file and get fielded JSON back with per-field confidence scores. 95 templates (invoices, receipts, bank statements, ID docs), custom JSON Schema mode, auto-detect, natural-language instructions. Keyless demo tool included. Free 7-day trial.

128 REST operations. 120 MCP routes; 119 JSON/text ops. OAuth 2.1. Not affiliated with X Corp.

Multi-carrier shipping for AI agents: compare rates, buy labels, track packages, validate addresses

Official MCP: continuous supply-chain risk monitoring and early warning, not a one-off report. Register and create a key at https://supplygraph.ai/zk_chat_os/dashboard/dashboard.html — if you are not signed in you will be redirected to login; new users can register there. After login, open A2A / MCP and click Create Production Key or Create Sandbox Key. Send the header as Bearer <api_key> (one Bearer prefix, then the raw key). Optional for initialize and tools/list; required for tools/call.

Official hosted MCP server for Flicker (flicker.finance). Crypto, stock and FX market data (prices, screeners, funding rates, exchange stats, news), Flicker's published analysis zones and per-position assessments, plus the authenticated user's multi-exchange portfolio: positions, trades, balances and exchange connections, watchlist, alerts and notification preferences (watchlist/alerts/preferences are editable, everything else read-only). Does not place or manage trades. Streamable HTTP, OAuth r

Deterministic decision layer for autonomous agents. Reproducible PROCEED, REVIEW, SKIP verdicts.

The trust harness for AI agents. Set what an agent can do before it acts.

Build personal interactive apps with real URLs and persistent storage, using any AI.