"Resources or services available for free" matching MCP connectors:
GET /v1/connectors – MCP directory API referenceMatching Connector Tools:
AMZScout Skill + MCP gives AI agents live access to real Amazon marketplace data across 14 Amazon marketplaces. Analyze any ASIN, validate product ideas, research niches, compare competitors, discover profitable keywords, and build data-driven PPC strategies using trusted Amazon insights instead of AI assumptions. Works with Claude, ChatGPT, Cursor, and any other MCP-compatible AI client. To connect, you'll need an AMZScout API plan and authorize your account. Get access and view pricing here: https://learn.amzscout.net/amazon-product-api-for-ai-agents
Query your Postgres from ChatGPT or Claude without exposing the database or handing over credentials. Run npx boltschema connect next to your database and it dials out over HTTPS — no inbound firewall rule, no open port, works with localhost and VPC-private databases. Read-only is enforced by a SQL guard, a Postgres READ ONLY transaction, and a scoped role generated for you.
Persistent knowledge graph for AI-augmented teams. Store decisions, findings, and standing rules across agent sessions with semantic search and typed connections. Includes cross-session memory, audit trail, workspace isolation, and secret detection. Built for teams running agents that need to remember. Free until launch with team tier as default, anon trial available.
PDF, image, video, OCR, screenshot, SQL, QR and text tools for agents. No API key, no signup.
Connect LLM tools to your Algolia account with user-scoped access for internal workflows.
Database for your AI agent. Turn its output into data, docs, skills, and apps you can actually use.
x402 pay-per-call infra for agents: $0.03 image generation, Postgres, auth, storage, functions.
It connects with Smart Data models database with more than 1000 open licensed data models and helps you to create applications and systems interoperable with existing standards or real applications
Find novel, statistically validated patterns in tabular data — hypothesis-free.
Every figure re-checked against SQL-computed facts; unsupported questions refused with the reason.
Forklift & aerial-lift compliance records for warehouses — read-only demo tools.
Read-only MCP server for HolyDB: find Catholic parish Mass times by location and time.
Generate realistic, FK-consistent synthetic test data for your databases from your AI assistant.
China's apparel supply chain data for AI: 1,000+ suppliers, 350+ fabrics, 170+ clusters.
Zero-key temporary JSON database for agents: one tool call, no signup, no OAuth, no API keys.
Permission before writes. Gravity→DENYs→Session $0.25. Pilot $100; Gateway $299. Probe free.
EU-native PaaS for AI agents — deploy web apps with one sentence, managed Postgres, GDPR by default.
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.
Read-only analytics for Convex apps, queryable via MCP from Claude, Cursor, and other clients.
Interact with your Google Bigtable resources using natural language commands.
