MCP connectors for ChatGPT

Nplg Catalog

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National Parliamentary Library of Georgia MCP — the union catalogue and the

npm Name Shape

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Check an npm package name shape.

Npm Package Info Mcp

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Dive into the world of npm with our NPM Package Info MCP.

npm-package-ws-has-241560546-weekly-downloads-but-sdk

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Stateful WebSocket session registry with per-connection Shannon entropy delta tracking for schema di

npm

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npm MCP — wraps the npm Registry API (free, no auth)

npm Release Tracker — new Node.js packages & JavaScript dependency updates (npmwatch)

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npm releases: Node package versions, daily.

npm Trends API

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npm package download trends and adoption growth over time.

npm Trends MCP

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npm package trends and weekly downloads over time.

NPMScan

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Detect malicious or vulnerable npm packages: registry search, OSV.dev and GitHub advisory lookups

npmscan

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Security analysis for npm packages, built for AI agents and developer tools.

• Search Packages: Search the npm registry by name or keywords. Returns matching packages with a link to their full npmscan.com risk/analysis page.
• Get Package: Fetch npm registry metadata for a package: latest version, install scripts (preinstall/postinstall are a key risk signal), maintainers, license, and recent version history. Includes a lin
• Get Package Version: Fetch registry metadata for one exact version of a package (dependencies, install scripts, tarball). Use this to check a version pinned in a lockfile rather than the latest releas

Nps

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NPS MCP — US National Park Service (free key, generous limits)

Nrel

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NREL MCP — wraps the US National Renewable Energy Laboratory developer API

Nsf Awards

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NSF Awards MCP — National Science Foundation award database (free, no auth)

Nsi Bg

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Bulgarian National Statistical Institute (НСИ / NSI) — Open Data API.

nslookup

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DNS lookups, health reports, SSL certs, security scans, GEO scoring, uptime checks

NTNU Courses (unofficial)

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Unofficial NTNU course data: search, timetables, grades, course info, and exam logistics.

NuBerea

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AI-powered biblical research tools — lexicons, morphology, manuscripts, and more.

nucleus

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Sovereign Agent OS — Persistent Memory, Governance & Compliance for AI Agents.

NugIt

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Save selected AI-generated answers as private Nugs in your personal NugIt library.

nullary

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Negative results intelligence for drug discovery — query measured failures via MCP.

nullpath Agent Marketplace

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Discover and hire AI agents with micropayments.

NUM

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Real places for your agent.

numberbroom-mcp

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Verify US phone numbers: line type, carrier, and TCPA litigator status via the NumberBroom API.

Numeratica — financial planning calculations

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Deterministic US financial planning: retirement Monte Carlo, Roth conversion, RMD, tax, IRMAA, SS

NumProof

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Deterministic signed verification of numeric & financial claims for AI agents & spreadsheets.

numuersapi

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NumbersAPI MCP — wraps numbersapi.com (free, no auth)

Numverify

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Numverify MCP — wraps the Numverify phone-number validation API (APILayer)

nuria-intelligence

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Nuria Islamic app: source-cited Islamic guidance, in scholarly review; sensitive Qs go to a human.

Nursing Home Database

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MCP server for US nursing facility search and ownership lookup (NursingHomeDatabase).

nutrition

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Nutrition MCP — wraps Open Food Facts API (free, no auth)