"Resources to Become an Expert in LangChain" matching MCP connectors:

Paste-your-data analytics over MCP, computed in code: csv_profile profiles columns and data quality, ab_test runs two-proportion z-tests, correlation and growth_rates cover the basics, with funnel_report, cohort_retention, and forecast_trend in the premium tier. No uploads, no external calls, no data retention.

Convert PDF bank statements to checked Excel, CSV or JSON with balance validation.

Converts customer-supplied PDF bank statements into checked Excel, CSV, or JSON with balance validation. Hosted Streamable HTTP endpoint; each user brings their own MainBook API key, and the server never connects to bank accounts.

Messy spreadsheets in, clean checkable tables out. Every result carries its arithmetic proof.

Find novel, statistically validated patterns in tabular data — hypothesis-free.

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

Find duplicate records in 30 seconds. Zero-config entity resolution, 97.2% F1 out of the box.

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

Read and write patients, facilities, medical documents, and consolidated FHIR records in Metriport.

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

CoreModels schema editor: nodes, mixins, relations, JSON Schema import/export. Sign-in required.

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

Schema modeling in JSON, JSON-LD, and other formats with CoreModels platform.

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

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

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.