MCP servers for Codex CLI

Transactional email and agent mailboxes: send, broadcasts, domains, Correio inboxes.

Brian Booms x402 product catalog as agent tools. Read-only.

Search self-contained .pikelet knowledge artifacts over MCP — no vector DB, no embedding API.

Cryptographic truth infrastructure for AI agents: seal, verify, anchor, cite, audit.

Design HTML email templates with AI: render to HTML and open them in a visual editor

Keyless MCP server for Duolingo profiles: languages, XP, streaks, achievements.

Fantasy football analytics: stats, dynasty, projections, prospects, Sleeper leagues, Excel I/O

UNESCO UIS statistics (education, science, culture) with full provenance and fixed releases.

Route x402 payments, Pyrimid affiliate splits, and referral links. Vendor-neutral, adapter-based.

Cloud DevOps analysis with guarded Git, infrastructure, cloud and observability operations.

Search questions and read answers across Stack Exchange sites. No key required.

MCP server for Node-RED: flows, nodes. Works with any instance.

Score password strength locally with the zxcvbn algorithm. No network and no key.

A Model Context Protocol (MCP) server for integrating AI assistants with Printify's print-on-demand platform

Lets AI coding assistants search the icon packages actually installed in your project.

Transactional email API for AI agents: verified domains, a per-sender budget, and a kill switch.

Secure access to DBHawk datasources: browse schemas, run governed queries, DBHawk AI text-to-SQL.

ElevenLabs Conversational AI: agents, calls, conversations, and knowledge base for MCP hosts

Student-loan math: RAP, IBR, ICR, PSLF. npx: no key. Remote: free login, no card, 5 questions total

Let your AI send invoices and take payment — card or ACH. Free.

KNMI open data: datasets, versions, files, downloads.