Best Stdio AI Skills & MCP Servers

Query stops, routes, real-time arrivals, vehicle positions, and schedules from OneBusAway transit APIs via MCP. STDIO or Streamable HTTP.

MCP server that turns PowForge pow-captcha into agent auth. Charge AI agents per-call without accounts: PoW solve = free tier, Lightning payment = paid tier. Three tools: challenge, verify, status. Stdio + HTTP Streamable transports, stdlib only — no MCP

Lightweight MCP server (Responses API core). OpenAI integration + web_search.

Server implementation for integrating with Carbon Voice's API, providing tools and endpoints for voice messaging, conversations, and workspace management through MCP (Model Context Protocol)

Search and query government open-data portals (Socrata SODA API) via MCP. STDIO or Streamable HTTP.

Send, manage, and replay ntfy push notifications via MCP. STDIO or Streamable HTTP.

MCP server for Jenkins (jobs, builds, folders, nodes, views, plugins, credentials)

Access FCC broadband availability, coverage analysis, and digital divide data for US geographies and census blocks via MCP. STDIO or Streamable HTTP.

MySQL MCP Server - stdio protocol for MySQL database operations with Windows support

Access US federal award, recipient, agency, and spending analytics data from USAspending.gov via MCP. STDIO or Streamable HTTP.

Search GBIF species taxonomy, occurrence records, datasets, and publishers via MCP. STDIO or Streamable HTTP.

Open-source MCP server to publish to Dev.to, Ghost, Hashnode, WordPress, Medium, Substack, LinkedIn, X, Bluesky, and Mastodon from Claude Code. Local stdio, no cloud relay. Includes SEO scoring, JSON-LD schema, canonical-URL wiring, social-post generation

Local stdio Model Context Protocol (MCP) server exposing 13 read-only Hyper Human Club tools to Claude Desktop, Cursor, and any MCP-compliant client.

Browse and query the U.S. Energy Information Administration API v2 — electricity, petroleum, natural gas, coal, forecasts, and more via MCP. STDIO or Streamable HTTP.

MCP server for querying Polymarket data via The Graph subgraphs — supports stdio and SSE transports

MCP server for Chamade — voice gateway for AI agents. v3 is a thin stdio shim around the hosted HTTP MCP at mcp.chamade.io, so every MCP client (stdio and HTTP) talks to the same hosted surface. Supports Claude Code channel mode for push events.

Discovery wedge for the Tracklution MCP server at https://mcp.tracklution.com/mcp. Today this is an alias of the `tracklution` package and prints the agent install protocol. Future versions will offer a local stdio<->Streamable-HTTP MCP proxy for clients

Stdio MCP server that wraps the ImageTalk backend REST API for use with Claude Desktop and other MCP clients.

A stdio MCP server for Google address validation and nearby business lookup

Search Wikipedia articles, read summaries and full text, target sections, find nearby pages, and list language editions via MCP. STDIO or Streamable HTTP.

Local-first AI-powered codebase analysis tool for stdio or HTTP transports using environment-supplied provider credentials.

First HTTP-native MCP server for Obsidian - Works with Claude Code CLI, Codex, Gemini without stdio bugs

Fetch US Bureau of Labor Statistics data — CPI, unemployment, wages, JOLTS, and more via MCP. STDIO or Streamable HTTP.

Domain Memory MCP server (stdio). Local-first MCP server that serves the business-domain knowledge of a project to any MCP-compatible agent.