"Using PostgreSQL with n8n Workflow Automation" matching MCP connectors:

Lexpad – Vocabulary Notebook & FlashcardsOAuth via extension

app.lexpad

Lexpad is a vocabulary notebook and flashcard app with spaced repetition (Leitner boxes) for learning words in 81 languages, including English, Spanish, French, German, Arabic, Turkish and Persian. Connect it to ChatGPT, Claude or any MCP client, and your assistant works with the words you collected yourself: • Save words and phrases you ask for, with meanings, example sentences and a level (A1–C2). • Find anything: browse and filter your whole notebook by due, new, struggling, starred or mastered words, level, topic or date added. • Practise: get quizzed on today's due words. Every answer counts as real review, moves the word through the Leitner boxes and keeps your streak. • Edit: fix spellings, change or reorder meanings, star or retire words. Deleting needs its own permission, and the assistant asks first. Lexpad never invents vocabulary: it only works with the words you add, by hand, from a text, or imported from Anki or a Kindle. Sign-in is OAuth on a Lexpad page; your password is never shared, and you can disconnect at any time. Works alongside the Lexpad web app and Android app. Guide and example prompts: https://lexpad.app/features/assistants

Hosted AI agents and workflows with app OAuth, human approval gates, and a run ledger.

Verify, quote and track contractor insurance in a 1099Policy account: who has active coverage, why a certificate was flagged, what a job's coverage costs, application links, jobs and assignments. OAuth 2.1 with dynamic client registration.

BrowserlessOAuth via extension

io.browserless.mcp

Browserless MCP - Cloud browser automation for AI agents with bot-detection bypass. Scrape and crawl sites, take screenshots, generate PDFs, run headless Chrome functions or an autonomous browsing agent, all through MCP.

DocsieOAuth via extension

io.docsie.app

Docsie MCP brings your documentation workflow directly into your AI assistant. Create, edit, and publish documentation without switching between tools. Convert videos into structured documentation instantly, run compliance analysis across text, audio, and video content, and use semantic search to find exactly what you need across your knowledge base. Whether you're building product documentation, SOPs, user guides, or technical manuals, Docsie MCP makes documentation faster, smarter, and powered

Schedule and publish posts to 10 social platforms (X, Instagram, TikTok, YouTube, Facebook, LinkedIn, Pinterest, Bluesky, Threads, Google Business) from one account, with scheduling, media upload, per-platform overrides, and post analytics.

Send and receive faxes from any MCP-compatible AI assistant using the Fax.Plus API

crispyOAuth via extension

sh.crispy

Full LinkedIn access for AI agents: leads, messaging, and campaigns with safe limits built in.

Remote MCP server with 187 tools for App Store Connect: bulk price editing across 175 countries, edit/translate metadata, edit/create/publish screenshots, track ASO, and ship releases from Claude Code or any MCP client, every write gated by a preview and confirm token.

Tasks, sprints, releases and docs for engineering teams with AI coding agents.

medusa-mcpAOAuth via extension

com.medusajs

Retrieve information from the Medusa documentation to assist you with your Medusa development.

MachineTranslation.com MCPOAuth via extension

com.machinetranslation

Runs your text through 22 leading AI translation models at once and returns only the translation they agree on, so you get a confidence-backed result instead of a single engine's guess. Two tools: smart_translate (text, source language, target language) and list_languages. Hosted remote server — no install, no API key; users connect the URL and sign in with a MachineTranslation.com account.

TradeOS MCP Server brings your trading intelligence into MCP-compatible AI tools like GPT and Claude. Connect your TradeOS server URL to let your AI assistant access your trading data, indicators, strategy logic, market workflows, and agent-driven analysis directly from TradeOS. Use it to reason over technical setups, monitor assets, automate strategy workflows, and work with your personalized TradeOS trading agents across stocks, commodities, FX, crypto, and more.

Cloudgate WorkflowOAuth via extension

dev.cloudgate

Build and manage Cloudgate workflow-APIs: controllers, actions, workflow graphs, and databases.

KubitOAuth via extension

ai.kubit

Bring Kubit into your AI workflow — query your warehouse with natural language

webhook.coOAuth via extension

co.webhook

Receive, inspect, replay and deliver webhooks — with signature verification and agent triggers.

MakeItRunOAuth via extension

io.github.makeitrunai

Publish HTML from Claude or ChatGPT to a live URL with a QR code — no developer needed.

i18n-agentOAuth via extension

ai.i18nagent

AI-powered translation for 48 languages with context-aware quality

mcp-serverOAuth via extension

in.creo-memories

Memory system for AI agents with semantic search. Store and recall memories with ease.

mcpOAuth via extension

com.appsflyer

Analyze your campaigns any way you want, with AI.