SkillFoxx

Inkbox plugin

A plugin with MCP and skills gives an agent email, phone, an encrypted credential vault and tunnels through Inkbox.

  • 106 ★ on the repository
  • Last commit
  • MIT
Plugin

Broad access

Why this level

  • The agent sends email, messages and calls in its own name.
  • The vault holds passwords, keys and one-time codes the agent reads and creates.
All reasons and checks

inkbox-ai/inkboxAuthor:inkbox-ai

Install

In your terminal, with SkillFoxx CLI

npx skillfoxx add plugins/inkbox

Detects the agents on your machine, shows the access level and pins the version.

Other ways to install

Access and checks

How we review

Broad accessThe tool can change data, run commands or handle secrets.

  • The agent sends email, messages and calls in its own name.
  • The vault holds passwords, keys and one-time codes the agent reads and creates.

This is third-party code. Review the repository files before installing.

What it does

Inkbox is cloud communication infrastructure for AI agents. An agent gets its own identity with a mailbox, a phone number, an encrypted vault for logins, keys and one-time codes, and a tunnel that puts a local server at a public address. Email works on custom domains, and there are SMS, MMS, iMessage, WhatsApp, Slack connections and Voice AI calls. The repository holds Python and TypeScript SDKs, the `@inkbox/cli` command line tool and plugins for Claude Code, Codex and Cursor. The Claude Code plugin loads skills for the SDK, onboarding and tunnels and connects the remote MCP server `https://inkbox.ai/mcp/anthropic`. On first run you sign in and pick an organization and identity. Outside the plugin you take a key from the Inkbox console.

Who it is for. Agent developers who need their own email and phone for signups, verification and talking to people.

Good fit when

  • An agent signs up for a service itself and receives a confirmation email.
  • An agent's passwords and TOTP codes must be kept apart from personal ones.
  • A local server with a webhook has to go online at a public address during debugging.
  • Outbound calls and SMS on behalf of the agent follow a scenario with limited authority.

Not a fit when

  • The task needs no outside communication: connecting a cloud is excessive.
  • The data cannot go to a third-party platform.
  • You need the Cursor Marketplace: the plugin is pre-release and not yet published.

Example request

Create an identity with a mailbox for the agent, send a welcome email to the address from the task and list incoming mail.

Limitations

The service is cloud-based, and the SDK and CLI need a key from the Inkbox console. The Cursor plugin is pre-release and not published to the Marketplace. Outbound SMS works only from local numbers, up to 100 recipient sends per number per day, and a new number waits 10–15 minutes for carrier setup. Voice AI with broad authority needs an admin key. Companion mode works only for senders with explicit allow rules in both directions. Python 3.11 or Node.js 22 is required for the SDK and CLI. All mail, calls and vault data pass through Inkbox infrastructure.

How to disable. In Claude Code disable the plugin through `/plugin` and remove the MCP connection. Revoke keys in the Inkbox console and remove the CLI with `npm uninstall -g @inkbox/cli`.

FAQ

How do I install Inkbox in Claude Code?

Run `/plugin marketplace add inkbox-ai/inkbox`, then `/plugin install inkbox@inkbox` and `/reload-plugins`. After sign-in the plugin connects the remote MCP server.

How do I install only the skills?

`npx skills add inkbox-ai/inkbox/skills` installs the skills for any agent: Python, TypeScript, onboarding and tunnels.

What does the vault do?

It is an encrypted store for logins, API keys, key pairs, SSH keys and one-time codes. The `use-inkbox-vault` example creates credentials with TOTP codes.

Does the plugin need an API key?

No, the Claude Code plugin authorizes through a browser sign-in. The SDK and CLI need a key from the console.

What are tunnels?

A tunnel puts a local server at a public Inkbox URL over an outbound HTTP/2 connection. The `use-inkbox-webhook` example receives an inbound email and replies.

Discussion

No questions or reviews yet.

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README in short

The README covers the SDKs, CLI and plugins together. Most of it is about communication channels, signatures, webhooks and safe message retries.

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