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Shippo's official plugin: compare rates from dozens of carriers (USPS, UPS, FedEx, DHL), validate addresses, buy labels incl. customs, track packages, ship in bulk and analyze costs. Needs a Shippo account (OAuth); rates and validation are free, labels cost. Mainly for North American sellers.

Atlassian's official plugin: run /twg-setup to install and sign in to the Teamwork Graph CLI, then Claude Code can query and act on issues, pages and pull requests across Jira, Confluence, Bitbucket, Trello and more. Needs an Atlassian Cloud account; terminal or desktop only.

Customer.io's official plugin (hosted MCP included): build automated messaging journeys and audience segments from plain-language descriptions, draft emails in Design Studio, report on campaign performance and diagnose deliverability. Needs a Customer.io account with MCP enabled (trial available).

Windsor.ai's official plugin: connects ad accounts on Google, Meta, TikTok and more plus 350+ data sources such as GA4 and CRMs for quick cross-channel performance reports and wasted-spend detection; asks before changing budgets or pausing ads. Needs a Windsor.ai account with data sources connected.

Locize's official plugin: agents translate and review strings using your project's glossary, style guide and translation memory, and check new copy for banned terms; also bundles the Locize MCP and an i18next skill for developers. Needs a Locize account (free tier); browser auth or a personal token.

Pendo's official plugin: two short rounds of questions capture your goals and brand style, then it generates ready-to-launch in-app guides such as walkthroughs, announcements, reminders, polls and promotions as HTML/CSS/JS. Needs a Pendo account authorized in Claude Code.

StackOne's official plugin connects its hosted MCP so agents can search and act across hundreds of connected business systems, from HR platforms like Workday and SAP to CRMs and Jira, for example looking up leave requests. Needs a StackOne account (free plan available) with your systems connected.

Synthflow's official plugin: connects its AI voice agent platform to create and publish voice agents, place test calls and review call logs, with built-in call QA and pre-launch prompt review skills. Needs a Synthflow account (free trial available) with OAuth sign-in on first use.

Greptile's official AI code review plugin: view and address review comments on GitHub or GitLab PRs, review the current branch before opening a PR, and search your team's knowledge base and coding standards. Needs a Greptile account (OAuth, free tier available) and Node locally.