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Best Stdio AI Skills & MCP Servers

156 curated Stdio skills and MCP servers — install any of them into Claude, Cursor, ChatGPT, n8n, or any AI stack with one command.

Cyclesite

MCP Registry

Stdio MCP relay for Cyclesite — UK's used bicycle marketplace. Forwards every request to the hosted MCP transport so tools and resources stay in sync with the platform.

MCP Registry · ★ 5.0free

Design

MCP Registry

MCP stdio server for design.justevery.com (Design App API)

MCP Registry · ★ 5.0free

Skills

MCP Registry

The official Barker stablecoin yield skill suite — real-time data from 500+ DeFi protocols and 20+ CEX. Skill installer for Claude Code / OKX Plugin Store + a stdio MCP server wrapping the Barker public API.

MCP Registry · ★ 5.0free

L402 Gate

MCP Registry

L402 Lightning paywall + Depth-of-Identity score gate for MCP. Two integration shapes: (a) stdio MCP server exposing l402_gate_challenge / l402_gate_verify / l402_gate_score for agent clients; (b) drop-in Express middleware + MCP tool factory that combine

MCP Registry · ★ 5.0free

Biorxiv

MCP Registry

Search and retrieve bioRxiv and medRxiv preprints — by DOI, date interval, or keyword — via MCP. STDIO or Streamable HTTP.

MCP Registry · ★ 5.0free

Crossref

MCP Registry

Resolve DOIs, search ~155M scholarly works, and fetch references via the Crossref REST API. STDIO or Streamable HTTP.

MCP Registry · ★ 5.0free

Reliefweb

MCP Registry

Search ReliefWeb humanitarian reports, disasters, jobs, training, and country profiles via MCP. STDIO or Streamable HTTP.

MCP Registry · ★ 5.0free

Openlibrary

MCP Registry

Search books and authors, fetch editions, browse subjects, and resolve cover images from Open Library via MCP. STDIO or Streamable HTTP.

MCP Registry · ★ 5.0free

Nist Nvd

MCP Registry

Search and audit CVEs by keyword, severity, CWE, CISA KEV status, and CPE via the NIST National Vulnerability Database. STDIO or Streamable HTTP.

MCP Registry · ★ 5.0free

Dokploy

MCP Registry

Dokploy MCP server for Codex, Cursor, and Claude with compact stdio and hosted HTTP modes

MCP Registry · ★ 5.0free

Wsdot

MCP Registry

Query WA highway conditions, ferry schedules, vessel locations, toll rates, border waits, and alerts via MCP. STDIO or Streamable HTTP.

MCP Registry · ★ 5.0free

Orcid

MCP Registry

Search and retrieve researcher profiles, works, affiliations, funding, and peer review records from the ORCID registry via MCP. STDIO or Streamable HTTP.

MCP Registry · ★ 5.0free

Keymask

MCP Registry

Local MCP credential broker for coding agents (Claude Code, Codex, Gemini, and any other MCP-stdio client). Values never enter the AI transcript — the agent requests secrets through a schema, a localhost form lets you type them, and they land in Vault, .e

MCP Registry · ★ 5.0free

Gdelt

MCP Registry

Search and analyze global news coverage and US television transcripts via the GDELT Project's real-time APIs via MCP. STDIO or Streamable HTTP.

MCP Registry · ★ 5.0free

Mcp

MCP Registry

MCP server for csvtocsv.com — deterministic CSV transforms (Amazon→Shopify, Any-CSV→Amplitude cohort, CSV cleanup) usable from any agent runtime over stdio.

MCP Registry · ★ 5.0free

Libofcongress

MCP Registry

Search LOC digital collections, browse Chronicling America newspapers with full OCR text, and look up LC Subject Headings via MCP. STDIO or Streamable HTTP.

MCP Registry · ★ 5.0free

Server

MCP Registry

MCP stdio + webhook server for point-grab

MCP Registry · ★ 5.0free

Boilerplate

MCP Registry

TypeScript MCP server boilerplate with STDIO and HTTP transport support, CLI tools, and extensible architecture

MCP Registry · ★ 5.0free

Courtlistener

MCP Registry

Search and retrieve US court opinions, federal dockets, judge records, citation networks, and oral arguments from CourtListener's 9M+ opinion corpus via MCP. STDIO or Streamable HTTP.

MCP Registry · ★ 5.0free

Cursor Cloud Agent

MCP Registry

Model Context Protocol server for Cursor Cloud Agents API - programmatically create, manage, and interact with AI-powered coding agents through MCP stdio transport. Integrate automated code generation, repository management, and agent workflows into your

MCP Registry · ★ 5.0free

Openstates

MCP Registry

Search bills, legislators, committees, and events across all 50 US states, DC, and Puerto Rico via MCP. STDIO or Streamable HTTP.

MCP Registry · ★ 5.0free

Census

MCP Registry

Query U.S. Census Bureau data, variables, and geography via MCP. STDIO or Streamable HTTP.

MCP Registry · ★ 5.0free

Reference Data

MCP Registry

Look up countries, timezones, periodic table elements, physical constants, units, HTTP status codes, and MIME types via MCP. STDIO or Streamable HTTP.

MCP Registry · ★ 5.0free

Mcp

MCP Registry

OpenCodeHub — stdio MCP server exposing code-graph + group tools

MCP Registry · ★ 5.0free

About Stdio skills on iClaude

iClaude is the universal install layer for AI skills. Every Stdio skill on this page can be installed into Claude Code, Claude Desktop, Cursor, ChatGPT, n8n, Codex, and more — using a single copy-paste command. No config drift, no per-stack adapters, no manual MCP wiring.