Best Oss AI Skills & MCP Servers

MCP server for paper-search-agent: academic paper discovery, access planning, and full-text retrieval via campus network

Engram — Persistent Memory Cortex for AI coding agents. Gives agents session continuity, change tracking, decision logging, and project intelligence across sessions.

An intelligent Model Context Protocol (MCP) Server that acts as an AI model advisor. Compare LLM and media pricing, features, and quality across 1,000+ models from OpenRouter, fal.ai, Together AI, Replicate, and Fireworks AI. Deeply compatible with Claude

Live AI compute pricing oracle MCP server — real-time LLM model prices across providers. Includes Claude Code skills for session cost analysis.

Persistent sequential thinking MCP — chain-of-thought reasoning that survives sessions, resumes across agents, and saves conclusions as plan artifacts. Powered by ZeroDB. Zero-config: agents self-provision a ZeroDB account on first run, no signup required

dwic — the design auditor for Claude Code. MCP server that audits your design tokens + markup for WCAG contrast failures, mandated-accent drift, and structural gaps, then remembers findings across sessions.

MCP server for LanceDB-backed long-term memory with hybrid retrieval (Vector + BM25), cross-encoder rerank, multi-scope isolation, and memory lifecycle management

Human-like memory for self-improving AI agents. Automatic capturing, nightly reflection, and cross-agent learning. Works with Claude Code and OpenClaw.

MCP server for Full Queso CRM/POS — Reporte 239 daily sales reconciliation by payment method with IGTF/IVA, counter closings, and cross-reference auditing

Model Context Protocol server enabling AI assistants to generate code in 11 languages (TypeScript, Python, Go, C#, Java, Kotlin, Groovy, Scala, Swift, PHP, Rust) with automatic imports — regenerated and compiled on every merge across the validation corpus

MCP server that gives Claude, Cursor, and Gemini long-term memory across sessions. Your AI remembers your codebase, decisions, and preferences — across tools and machines.

MCP server for markdown files — search, extract sections, list headings, find code blocks across your docs directory

AINative ZeroDB Memory MCP Server - 18 tools for agent memory: 9 memory + 5 write-back (Slack, Gmail, Calendar, GitHub, Notion) + 4 plan artifacts (persistent plans/PRDs across sessions with diff history). Auto-context middleware. Production-ready for Cla

Search and explore 19.4 million Smithsonian Open Access museum objects, retrieve CC0 media, and discover cross-collection connections via MCP.

Cinderwright Discovery Hub MCP Server - cross-protocol agent payments search engine. 1,551 services across x402, MPP, and Lightning.

MCP server for the AI Patent Search Generator — patent dossiers, prosecution history, office-action analysis, citation/family/CPC lookups, and Google Patents search from Claude Code, Claude Desktop, Cursor.

MCP Server for Vinted marketplace — search items, compare prices, analyze sellers across 19 countries. Works with Claude Desktop, Cursor, and any MCP client.

Drop-in trust boundary for MCP servers: trust-score gating, per-tool rate limits, prompt-injection prefilter, audit forwarding. Free OSS shield. ESM-only.

SharpEdge MCP Server - Sports betting edge detection for AI assistants. Find +EV bets, arbitrage, and optimal bet sizing across US sportsbooks.

Scan, export, and import your AI ecosystem across tools. Discover MCP servers, context files, skills, memories. Export/import between Claude, Cursor, Windsurf, Copilot, Gemini, Codex, OpenCode. CLI + MCP server.

Japanese food nutrition for AI assistants. Bilingual JP/EN lookups across konbini, restaurant chains, and grocery brands. Macros, allergens, sodium. 460 cited items.

Turn Claude research output into designed PDFs. Cover page, table of contents, code blocks that hold across pages. MCP server and Claude Code skill for markdown to PDF.

AI skills manager — install, publish, and deploy reusable prompts, personas, and MCP tools across 15 AI clients

MCP server for AgentAEO — run AEO audits across ChatGPT, Perplexity, Claude, and Google AI