MCP servers for ChatGPT

Local MCP server that puts a safety gateway between your AI agent and PostgreSQL: read-only queries, row limits, tenant isolation, tamper-evident audit log. No API key needed.

Pine Script v6 documentation lookup, function validation, and linting for AI code generation

UI Visual Comparison Testing tool - visual regression testing tool based on Playwright

Quipu API integration with 18 MCP tools for invoices, expenses, contacts and Spanish VAT reporting

Advanced MCP server for RAG-enabled memory through a knowledge graph with vector search

RAG retrieval IR metrics: recall@k, hit@k, MRR, NDCG@k, evaluate_batch.

MCP server for sending emails through the Resend API.

MCP server for Sartorius laboratory balances (SBI protocol).

Klaviyo MCP: campaigns, flows, segments, metrics, reports, profiles across many accounts. 24 tools.

Content-addressed semantics: fail-closed handshakes over 617 cognitive patterns.

AI & chip stocks for agents: who owns, buys, sells, lends — pre-IPOs too, straight from SEC filings.

Full website health audit — SSL, DNS, DMARC/SPF/DKIM, performance, uptime, links

smart-data-extractor MCP server on Cloudflare Workers · REST + MCP JSON-RPC · free tier

Standup notes from merge request state, with the failed job's error lines.

Parse partial / truncated / messy JSON for LLM tool calls and structured outputs.

Suunto API: workout history, summaries. Needs OAuth token.

USGS Water Services streamflow, flood stages, and peak events via waterservices.usgs.gov

MCP server for Venmo - check balance, send/request money, view history

AI-agent outreach: cold email, warmup, LinkedIn, Instagram, WhatsApp, verification, 200M leads

MCP-based web scraping server with built-in Puppeteer headless browser support

Save how to read a public web page once, then fetch fresh items as JSON without a browser.