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Complete guide for Mastra development — agents, tools, workflows, vertical organization, and type safety
Codex または Claude でインストール この Prompt をコピーして Codex、Claude、または他のアシスタントに貼り付けると、Skill ページを確認してインストールできます。
SOC 職業分類に基づく
Always use Turborepo commands for building, testing, and serving projects in this monorepo
Always use Turborepo commands for building, testing, and serving projects in this monorepo
Always fix issues you encounter, even if unrelated to your current task
Essential clean code practices including naming, comments, and structure
Commit message format standards using Conventional Commits specification
Use GitHub MCP tools for all repository operations instead of CLI or API calls
| name | mastra-development |
| description | Complete guide for Mastra development — agents, tools, workflows, vertical organization, and type safety |
This skill covers all conventions for building with Mastra in the Hey Jarvis project. Always use the factory patterns — never import from Mastra's core packages directly.
createAgent() factory, file structure, naming conventions, registration stepscreateTool() factory, critical naming rules, export pattern, input/output schemascreateWorkflow(), agent-as-step, tool-as-step, state managementsatisfies| What | Factory | Import from |
|---|---|---|
| Agent | createAgent() | ../../utils/agent-factory |
| Tool | createTool() | ../../utils/tool-factory |
| Workflow | createWorkflow() | ../../utils/workflow-factory |
| Step | createStep() | ../../utils/workflow-factory |
| Agent step | createAgentStep() | ../../utils/workflow-factory |
| Tool step | createToolStep() | ../../utils/workflow-factory |
mastra/verticals/[vertical-name]/
├── agent.ts # or agents.ts for multiple
├── tools.ts
├── workflows.ts
└── index.ts
as) to fix type errors after version bumps@mastra/core/* directly — always use factories