"Using PostgreSQL with n8n Workflow Automation" matching MCP connectors:
GET /v1/connectors – MCP directory API referenceMatching Connector Tools:
Generate and lint n8n workflows, diagnose failed executions, and manage live n8n instances. Built and hosted by AutomateLab. Product and documentation: https://automatelab.tech/products/mcp/n8n-mcp/
Review construction plan takeoffs and download reviewed estimates with Portravo account linking.
Quote available physical deliveries, review before payment, and track owned orders with OAuth.
Collect verified customer information with one request
Hosted AI agents and locked workflows on connected apps, with human approval gates and a run ledger. Docs: https://docs.flowra.dev/guides/mcp
Build agents to automate any background task. Works with your ChatGPT/Claude subscription.
Send a USPS Certified Mail letter to any US address from ChatGPT, Claude or Grok. The assistant prepares the letter and hands back a review link; a person reads it, checks the recipient, pays and authorizes. Nothing is printed, mailed or charged without that approval. $16.17 with the electronic return receipt, $13.18 without. No subscription, and no account needed to see a price. Docs: https://piloxa.com/send-a-certified-letter-online
Create dynamic QR codes, update destination links after printing, and retrieve scan analytics through QRtracer. Connect marketing and print workflows to your AI assistant using the hosted MCP endpoint. Website: https://qrtracer.io
Client intake for AI agents: request files, texts, choices and credentials from a client, chase missing items automatically, get notified when complete. Hosted Streamable HTTP endpoint with OAuth 2.1 (PKCE, dynamic client registration); the same tools as the @briefgate/mcp npm package.
Estimate illustrative automation ROI and rank recurring workflows to automate. Read-only, no auth.
Paid cron for AI agents: we call your https URL on schedule, signed. No account, paid with x402.
Your agent needs a mailbox of its own — to receive, thread, draft and send, with attachments, without borrowing your personal inbox or your company's SMTP. **What you can ask for** • "Create an inbox for this agent and tell me its address." • "Read the new messages in this thread and draft a reply." • "Send this message with the attachment and wait for the response." • "Search this inbox for everything from that domain." • "Show delivery metrics and the events on this inbox." **How to use it** Point any MCP client at https://mcp.aisa.one/mail/mcp and sign in with OAuth — there is no key to create or paste. 49 tools: create and delete inboxes, list and read messages, raw message bodies, attachments, threads, drafts and draft attachments, send and reply, message search, inbox events, metrics, and list entries — reads and writes. **Why this rather than the source** A real inbox an agent owns, rather than an SMTP credential it borrows from a human. **It is also a door to the rest** The same login reaches 26 sources and 580+ operations. Find the contact elsewhere in the catalogue, then write to them from here — without adding a second server. **What it costs** Finding and inspecting an operation is free. Running one is billed per call at API prices, with no seat and no monthly minimum, and every call takes max_price_usd so an agent cannot overspend by accident. **Where else it reaches** https://mcp.aisa.one/sales/mcp finds the person to write to.
Adsap is a Meta and Google Ads automation platform, with a web app and an AI copilot for Claude, ChatGPT and Perplexity.
Zero-auth MCP server for sending a reminder to anyone with a public UnRemind.me page. No account or token. The recipient approves it before it enters their list.
Multi-carrier shipping functionality with built-in, discounted carrier accounts. Compare rates, generate PDF shipping labels, schedule pickups and track packages in automated way or in your chatbox, no coding required. This is a demo server that is functional with no account needed and no auth. For production use please find our production version.
Screenshot any website with one API call PNG, JPEG, WebP, or PDF. Custom viewports, device emulation, ad blocking, dark mode, and smart caching.
AI-powered image processing via GPU. Remove backgrounds and upscale images (2x/4x) directly from any MCP client. OAuth 2.1 authenticated, returns processed images inline with download links. Free credits on signup at maskr.io.
Drive real Android & iOS devices and web browsers from natural language for mobile + web QA. 290+ tools across device control, app management, automation sessions, browser automation, and flow recording / replay. Bearer-auth — get a token at robotactions.com → Profile → API Tokens.
Transform and optimize images by resizing, compressing, and converting across multiple formats. Streamline complex editing workflows using a multi-step pipeline for efficient sequential processing.
Supervised API-write gateway for AI agents with policy, human approval and execution receipts.
