"Understanding OAuth 2.0 Protocol" matching MCP connectors:
Matching Connector Tools:
Zero-key temporary JSON database for agents: one tool call, no signup, no OAuth, no API keys.
Read-only MCP server for The Quiet Protocol's engines, benchmarks, proof, and business data.
MCP server for the HubSpot Integrations Center HubDB: search and retrieve integration data.
The BigQuery remote MCP server is a fully managed service that uses the Model Context Protocol to connect AI applications and LLMs to BigQuery data sources. It provides secure, standardized tools for AI agents to list datasets and tables, retrieve schemas, generate and execute SQL queries through natural language, and analyze data—enabling direct access to enterprise analytics data without requiring manual SQL coding.
PostgreSQL, MySQL, OpenAPI/Swagger, and shared Agent Memory with scoped access.
Managed MCP gateway for PostgreSQL. Connect Cursor, Claude Desktop, VS Code, and Windsurf to your database with per-table permissions, encrypted credentials, and a full query audit trail. OAuth 2.0 authentication, free tier available.
Session Cert $0.25/10 Ed25519 PASS before mutating SQL. OAuth≠authorize. Instant $0.05. MCP+x402.
Hosted, OAuth-protected MCP server connecting AI clients to your databases with governance and audit
Connect Claude, Cursor, or ChatGPT to your business data. Ask questions, get answers.
Connecting LLMs and AI agents to real-time production data shouldn't mean writing endless boilerplate middleware. BoltSchema automatically converts your PostgreSQL into secure, production-ready, and hosted Model Context Protocol (MCP) servers. Save days of engineering time, handle JSON-RPC schemas automatically, and let your AI securely query the exact data context it needs in under 60 seconds.
The HubSpot MCP Server acts as a bridge that enables AI assistants and Large Language Models to securely interact with HubSpot CRM data through natural conversation, without requiring users to understand complex API structures. It provides read-only access to standard CRM objects (contacts, companies, deals, tickets, products, invoices, and more) and their associations, secured via OAuth 2.0, allowing AI agents to perform tasks like summarizing deals, fetching company updates, and looking up record changes.