# Feature Marker

> >

- **Type:** Skill
- **Install:** `agentstack add skill-viniciuscarvalho-feature-marker-gemini`
- **Verified:** Yes — security-reviewed for prompt injection and unsafe behavior
- **Seller:** [Viniciuscarvalho](https://agentstack.voostack.com/s/viniciuscarvalho)
- **Installs:** 0
- **Category:** [Agent Skills](https://agentstack.voostack.com/c/agent-skills)
- **Latest version:** 0.1.0
- **License:** MIT
- **Upstream author:** [Viniciuscarvalho](https://github.com/Viniciuscarvalho)
- **Source:** https://github.com/Viniciuscarvalho/Feature-marker/tree/main/feature-marker-dist/adapters/gemini

## Install

```sh
agentstack add skill-viniciuscarvalho-feature-marker-gemini
```

Requires the [AgentStack CLI](https://agentstack.voostack.com/docs/cli). Works with Claude Code, Cursor, and any MCP-compatible agent.

## About

# feature-marker for Gemini

Use this skill from inside Gemini prompts:

```text
Use feature-marker to implement billing-observability.
```

Run the complete flow by default:

- Create or reuse `tasks/{slug}/prd.md`, `tasks/{slug}/techspec.md`, and
  `tasks/{slug}/tasks.md`.
- Use the bundled templates in `templates/` for PRD, TechSpec, and Tasks; fill
  `{slug}` and `{feature_title}` and leave no unresolved placeholders.
- Create or require a feature branch before implementation.
- Use a git worktree only when the checkout is dirty or the user asks.
- Run an implementation grill pass before coding to find artifact, task, test,
  risk, and handoff gaps.
- Resolve grill findings in the artifacts, asking the user only when a finding
  changes scope or requires a product decision.
- Stop only for true ambiguity, unrelated dirty work, or blocked verification.
- Run verification, commit locally, and print exact push/PR handoff commands.
- Do not push, open a PR, create checkpoint JSON, or use an interactive menu.

`spec-driven` and `ralph-loop` are out of scope for this skill-first v1 unless
they are rebuilt as explicit skill instructions.

## Source & license

This open-source skill is cataloged on AgentStack and links to its original source — we do not rehost the code.

- **Author:** [Viniciuscarvalho](https://github.com/Viniciuscarvalho)
- **Source:** [Viniciuscarvalho/Feature-marker](https://github.com/Viniciuscarvalho/Feature-marker)
- **License:** MIT

Install and usage instructions live in the source repository linked above.

## Pricing

- **Free** — Free

## Security capabilities

Automated source analysis of v0.1.0 — what this tool can access:

- **Network access:** no
- **Filesystem access:** no
- **Shell / process execution:** no
- **Environment & secrets:** no
- **Dynamic code execution:** no

*"Yes" means the capability is present in the source — more access means more to trust, not that it is unsafe.*


## Versions

- **0.1.0** — security scan: passed — Imported from the upstream source.

## Links

- Listing page: https://agentstack.voostack.com/l/skill-viniciuscarvalho-feature-marker-gemini
- Seller: https://agentstack.voostack.com/s/viniciuscarvalho
- Browse the marketplace: https://agentstack.voostack.com/browse

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Listed on AgentStack — the marketplace for AI agent skills and MCP servers. Every listing is security-reviewed. Creators keep 70%.