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CaffeineLabs Extension Skills — Setup Guide

Source: caffeinelabs/skills GitHub: caffeinelabs/skills Skills: 39 skills · 259.4K total installs Category: Agent Platform Extensions & Connectors First Seen: August 15, 2026 sweep Quality Tier: 🟢 Production (largest extension-skill suite catalogued this week)

CaffeineLabs publishes a large suite of extension-* capabilities for an agent platform, plus connector and Motoko (Internet Computer language) series. The email surface is the standout for business operators: calendar events, marketing, verification, and raw SMTP-level access all ship as separate skills around 13K installs each. Stripe, object storage, authorization, HTTP outcalls, and X posting round out the platform-integration surface, with Google Mail and Google Calendar connectors in the 7-10K range.

Installation

npx skills add caffeinelabs/skills

Install individual skills by name, for example:

npx skills add caffeinelabs/skills --skill extension-email-marketing
npx skills add caffeinelabs/skills --skill connector-googlemail

Prerequisites

Requirement Details
Node.js + npx For the skills add installer
Platform account The extension skills target the platform runtime the suite is built for (the Motoko series places it in the Internet Computer ecosystem)
Service credentials Per-skill: Gmail OAuth, Stripe API key, X API keys as needed

What It Provides

Skill Installs Notes
extension-email-calendar-events 13.4K Calendar event handling
extension-stripe 13.1K Payment processing
extension-email-marketing 13.1K Campaign and marketing email flows
extension-email-verification 13.1K Address verification
extension-email / extension-email-raw 13.1K each Standard and raw SMTP-level email
extension-posting-to-x 13.1K X/Twitter publishing
extension-openai 13.1K Model calls from the platform
extension-http-outcalls 13.1K External HTTP requests
extension-authorization 13.1K Auth and permission flows
extension-oql / extension-querying-oql 12.6K / 9.9K OQL data querying
connector-googlemail 10.0K Gmail connector
connector-googlecalendar 7.1K Google Calendar connector
writing-motoko, migrating-motoko, migrating-motoko-actors ~1 each Motoko (Internet Computer) development series

Quick Start

  1. npx skills add caffeinelabs/skills
  2. Pick the extension matching the capability you need (email-marketing for outreach, stripe for billing)
  3. Configure service credentials in the platform environment
  4. Ask the agent to exercise the capability: "send a verification email to x@y.com and log the result"

CorpusIQ Use Cases

Use Case How
Email verification extension-email-verification for list hygiene before outreach sends
Marketing sends extension-email-marketing patterns for campaign automation design
Calendar operations extension-email-calendar-events for scheduling workflows
Reference patterns Authorization and HTTP-outcall extension designs as templates for MCP connector architecture

Limitations / Verification

  • The extension series targets a specific platform runtime, not raw Claude Code or Hermes sessions — treat it as a pattern reference plus capability set for that platform
  • Motoko skills are for Internet Computer canister development, niche outside ICP work
npx skills add caffeinelabs/skills --skill extension-email-verification   # verify install works

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