"Simple HTTP server or client implementation" matching MCP connectors:

Upwork MCP ServerAOAuth via extension

com.upwork.mcp

Connect your AI agent to Upwork. Search talent, post jobs, manage contracts, and get answers from your account.

MCP server for your apps' tools and custom tools, plus hosted AI agents and approval-gated workflows

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

TradeOS MCP: ticker search, My Agent, chart TA, macro news. npm stdio or HTTP.

Read-only MCP server for Glimps invoice processing. Connect ChatGPT and Claude to ask about invoices, suppliers, coding, approvals, and processing status in Exact Online.

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

Nimble MCPOAuth via extension

com.nimbleway.mcp

The Nimble MCP Server gives AI agents the ability to search, extract, map, crawl, and structure data from any website in real time. It exposes Nimble’s full web data platform as MCP tools that any compatible AI client can use.

Windframe MCPOAuth via extension

dev.windframe.mcp

Provides style context & tokens to design or restyle web UIs in any framework

AIclicks brings AI-search visibility data into any MCP client: see where your brand gets mentioned across ChatGPT, Perplexity, Gemini, and Google AI Overviews, who the competing citations are, and which sources the models pull from.

Provides style context & tokens to design or restyle web UIs in any framework

Qase Test ManagementOAuth via extension

io.qase

Official MCP server for Qase — manage test cases, runs, suites, defects via AI tools.

Your prompt library in any MCP client: list, fetch, save and version prompt templates.

BrowserStack's Official MCP Server

AI video upscaler: enhance videos to 1080p, 2K or 4K and track upscaling tasks.

Connect ChatGPT, Claude & AI agents to Chatway live chat to reply to customers and manage tickets

PostHero MCP server — schedule and publish social media posts from any MCP-compatible AI tool

Didit MCP ServerOAuth via extension

me.didit

KYC, KYB, AML, wallet screening, transaction monitoring, and fraud workflows for AI agents.

Qualified and simple e-signatures: request signing, track ceremonies and download signed documents.