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TimescaleDB MCP server — free cloud TimescaleDB hypertables for Claude, ChatGPT and time-series AI agents

An MCP server that gates content and tools behind x402 stablecoin micropayments with pluggable content and payment network adapters.

A weather query MCP server based on FastMCP, supporting Chinese city names and fetching real-time weather data from wttr.in.

An MCP server that validates Japanese corporate numbers and invoice registration numbers, and normalizes/matches company names across notation variants.

Checks whether a beneficiary received Bolsa Família benefits using their NIS and reference month/year. Provides read-only, credential-free access to benefit status for use with any MCP client.

Enables to manage Toggl time entries, projects, tasks, and timers through natural language commands.

Exposes the Greeks options-analytics API as MCP tools, enabling live queries for GEX, Greeks, Max Pain, unusual flow, and full dashboard on any ticker.

Provides comprehensive access to the W3C WAI-ARIA specification for querying roles, states, properties, and accessibility requirements. It enables developers and AI agents to validate ARIA attributes and receive smart role suggestions based on UI component descriptions.

QuickGO (EBI) MCP — Gene Ontology browser.

Enable your AI assistants to perform real-time web searches and retrieve the latest information on any topic. Integrate seamlessly with the WebSearch Crawler API for efficient and accurate search results. Enhance your applications with up-to-date knowledge and insights from the web. This is self-hosted service, free You will need to selfhost web api on local or vps. follow [guide here](https://github.com/mnhlt/WebSearch-MCP/blob/main/README.md)

This MCP server provides Google Custom Search functionality, allowing AI assistants to perform web searches and retrieve formatted results. It integrates with Google's Custom Search API using environment variables for authentication (API key and Custom Search Engine ID), and exposes a single tool that returns search results with titles, links, and snippets. The implementation handles errors gracefully and is designed for easy integration with Claude Desktop and other MCP-compatible clients, making it useful for research tasks, fact-checking, and retrieving up-to-date information from the web.

Enables AI agents to control MoviePilot through the MCP protocol for managing subscriptions, downloads, media searches, and system status.

Expose the Teller delta-neutral + lending Model Context Protocol server.

Enables AI agents to search for speakers and talks by date using the Sessionize API.

A simple Bash JSON-RPC MCP server for sending desktop notifications via notify-send or MacOs native notification center . Supports listing tools and showing notifications with customizable title and message.

MCP server that enables AI assistants to query official SEFAZ Alagoas negative debt certificates (Certidão Negativa de Débitos) via a single read-only tool, using prepaid credits and hosted MCP over HTTP.

Verifies whether a Brazilian citizen receives the Benefício de Prestação Continuada (BPC) using CPF and NIS, with read-only access via a hosted MCP endpoint.

Enables AI assistants to manage Fivetran users and connections, including inviting users, listing connections, and triggering syncs.

Extract, create, convert & validate invoices (UBL, CII, XRechnung, ZUGFeRD, PDF, Excel)

An MCP server for making divination chart including six-line and Bazi. 六爻八字排盘MCP