"Adding functionality to large language models" matching MCP connectors:

Document-to-Markdown MCP server — convert PDF, Office and HTML into LLM-ready Markdown.

Turn PDFs and images into typed fields — invoices, receipts, IDs and custom models — via Mindee OCR.

List reverse-ETL sources, destinations, models, syncs and runs; trigger syncs into SaaS tools.

Auto-discover validation rules from data — scan, profile, health-score. No rules to write.

Excel analytics: inspect, query (JSON rows), charts, and JSON-to-xlsx workbook writing.

AI access to Quadratic spreadsheets: open files, run Python/SQL, query connected databases.

Self-hosted, open-source MCP gateway: turn any API, database or MCP server into custom connectors for Claude, ChatGPT, Gemini, Copilot & Cursor — no code. Converts REST, SOAP, WSDL, GraphQL & SQL to MCP, with OAuth2, RBAC & audit log. 175+ pre-built adapters. This is the public read-only demo endpoint — run your own at https://github.com/HelpCode-ai/anythingmcp

Connect your Nubank account to AI via Brazil's Open Finance: balances, statements, cards, investment

Interact with your Google Cloud Datastream resources using natural language commands.

Chrysai provides a hosted MCP server for AI-driven data operations. After connecting an MCP client to the endpoint, you can use MCP tools such as create_app, list_apps, read_data, write_data, update_data, delete_data, and update_app, plus schema resources, to manage persistent structured data through natural language.

AI data intelligence platform that brings your data warehouse, dashboards, monitoring, and accumulated business knowledge into any MCP client. Connects to BigQuery, Snowflake, PostgreSQL, MySQL, ClickHouse, Redshift, Databricks, SQL Server, and Azure Synapse.

Connect your AI to all your data - 200+ sources, intelligently filtered, compliance-ready.

Connect your AI assistants to Keboola and expose your data, transformations, SQL queries, ...

Map messy columns to a known schema — 7 scorers, domain dictionaries, F1 0.84. Zero config.

Move a database between providers, or convert MySQL to PostgreSQL, with integrity verified.

One command to validate, transform, and deduplicate — chain GoldenCheck + Flow + Match.

Deterministic bank-statement parsing: messy CSV/OFX to clean categorized rows. In-memory only.

Provides access to live sports data and analytics from BALLDONTLIE: The Sports API

Deterministic bank-statement parsing for AI agents: messy CSV/OFX exports to clean, categorized ledger rows. In-memory only, no storage, no external calls. Free tier: 50 requests/month.

Baselight’s MCP server lets you seamlessly integrate your favourite applications with the Baselight platform. By connecting to the MCP server, you can browse, discover, and query 70,000+ datasets and 450+ billion rows directly from your preferred environment—whether you’re building, analysing, or exploring.