Best Http AI Skills & MCP Servers

ThryxProtocol v3.1.1 MCP Server — gasless AI agent launchpad + trading platform on Base. 21 tools wrapping the thryx.fun HTTP API. Server-managed wallets, paymaster gas, free LLM-driven autotrader. No private keys, no signing, no API bills. Auto-registers

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

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.

22 x402 pay-per-call utility tools for AI agents — scrape, validate, embed, store, moderate, notify, convert, prevent loops. No accounts, no API keys. USDC on Base via the x402 protocol.

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

Shared TypeScript types and x402 payment-flow utilities for @xenarch/agent-mcp — Xenarch's non-custodial x402 MCP server.

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

Non-custodial x402 MCP server for AI agents. Lets Claude, Cursor, LangChain and CrewAI pay for HTTP 402–gated APIs with USDC micropayments on Base L2. Unlike Cloudflare Pay-Per-Crawl, works on any host and settles agent-to-publisher direct.

MCP server with 45 developer utilities (16 free + 29 pro). Free: UUID, hash, HMAC, base64, timestamps, JWT decode, random strings, URL encode/decode, JSON format, YAML/JSON convert, regex test, cron explain, color convert, HTTP status, slugify, HTML escap

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.

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.

HAL (HTTP API Layer) - An MCP server that provides HTTP API capabilities to Large Language Models with OpenAPI/Swagger integration

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

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.

MCP server that stops AI agents from overpaying. Drops into Claude Desktop, Cursor, Continue, Windsurf, Zed, ChatGPT desktop, and Gemini CLI to give any agent live fair-market-value lookups, a green/amber/red prepay verdict, and cryptographically-signed (

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.

Sputnik X — AI-agent-native intelligence platform. MCP tools for EU trade (63M+ Eurostat COMEXT records, 27 countries, 2005-2025), LV customs (4.2GB KN8), salary + AI-risk analytics, sanctions screening, EU AI Act Article 12 compliance, SoulLedger identit

Standalone MCP (Model Context Protocol) server - stdio/http/websocket transports, connection pooling, tool registry