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The tassyir plugin gives Claude Code what it needs to build a Tassyir app:
  • the developer MCP server, @tassyir/dev-mcp: it searches and reads these guides, looks up any Admin API operation and webhook body, validates tassyir.app.toml with the API’s own validator, starts a new app from the starter, and sends test webhooks and creates dev stores with your tassyir login;
  • the tassyir-app skill: the app contract (manifest, scopes, tokens, webhooks, Admin API, App Bridge, dev stores), the same file create-tassyir-app writes into every new project.

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Install

In Claude Code, add Tassyir’s plugin marketplace, then install the plugin:
From a terminal, the same is:
The marketplace is the tassyir/apps-sdk repository. The plugin runs the @tassyir/dev-mcp release it names, with npx, so you need Node 22.18 or later.

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Update

For a newer release later:

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Without the plugin

The server alone works in any MCP client. In Claude Code:
The tools that act on your Tassyir account use the sign-in of the tassyir CLI. Sign in once, in a terminal:
Every tool, its input and its answers: @tassyir/dev-mcp.