# Add To Project

> Add capabilities, addons, deployment targets, generated CI, services, or stack updates to an existing Better Fullstack project. Use when the current repo has bts.jsonc or the user asks to extend a generated project. Prefer bfs_plan_stack_update and bfs_apply_stack_update; use legacy addon tools only for addon/deploy-only flows.

- Skill: `marve10s/add-to-project` (Agent Skill)
- Install (CLI): `npx skillmds@latest add marve10s/add-to-project`
- Raw SKILL.md: https://api.skillmd.com/api/skills/marve10s/add-to-project/raw
- Safety review: pending
- Works with: Claude Code, Claude.ai, OpenAI Codex
- Category: DevOps & Infra
- Author: marve10s (https://skillmd.com/u/marve10s)
- Updated: 2026-09-17
- Page: https://skillmd.com/skills/marve10s/add-to-project

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# Add to an Existing Better Fullstack Project

Use the Better Fullstack MCP server for existing-project updates. Do not hand-edit generated stack
metadata or guess which template files belong to a capability.

## Workflow

1. Confirm the project directory and ensure it contains `bts.jsonc`.
2. Call `bfs_get_guidance` and `bfs_get_schema`.
3. For capability changes, call `bfs_plan_stack_update` with the target `projectDir` and requested
   stack fields.
4. Review the preview, including blockers, file changes, dependency changes, env changes, and
   compatibility adjustments.
5. Call `bfs_apply_stack_update` only when the plan is acceptable.
6. For legacy addon/deploy-only changes, call `bfs_plan_addition` before `bfs_add_feature`.
7. Report changed files and the exact install/test commands.

## Rules

- Keep update semantics preview-first.
- Prefer additive updates first: generated CI, docs, observability, email, search, vector DB, file
  storage, rate limiting, and mobile capabilities.
- Treat database, ORM, auth, API, and payment-provider swaps as risky and make compatibility changes
  explicit.
- Set installs disabled unless the user asks for dependency installation.
- Do not start a dev server.

## CLI-only fallback

If the Better Fullstack MCP tools are unavailable, inspect the current flags with
`npx -y create-better-fullstack@latest add --help`, then run the explicit add command with
`--project-dir <path> --dry-run --no-install`. Review that preview before rerunning without
`--dry-run`. Do not guess option names or hand-edit generated stack metadata.