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Agent skill

Spectre Feature Root

by joenandez in joenandez/spectre

Internal initializer for a missing Spectre feature root. An agent skill from joenandez/spectre.

MITAuto-check passed

Install Spectre Feature Root

skills CLI
$ npx skills add joenandez/spectre --skill spectre-feature-root -a claude-code

Project install by default; add -g for ~/.claude/skills/.

GitHub CLI
$ gh skill install joenandez/spectre spectre-feature-root --agent claude-code

Project scope by default; add --scope user for a personal install. Needs GitHub CLI 2.90.0 or later (public preview).

Manual copy
$ git clone --depth 1 https://github.com/joenandez/spectre.git skills-src && mkdir -p .claude/skills && cp -r skills-src/plugins/spectre/skills/spectre-feature-root .claude/skills/spectre-feature-root && rm -rf skills-src

Use ~/.claude/skills/ instead of .claude/skills for a personal install. The folder must contain SKILL.md.

Claude Code skills documentation · loads skills from .claude/skills/

Facts

Skill name
spectre-feature-root
GitHub stars
164
Token cost
~500 tokens
SKILL.md length
182 words
Files
1
Skills in repo
26
Repo updated
First seen
Licence
MIT

At a glance

Internal initializer for a missing Spectre feature root. An agent skill from joenandez/spectre.

  • Works in 5 steps: Use an explicit caller… → Otherwise derive a concise kebab name… → Create feature.json containing only… → …
  • SKILL.md covers Purpose, Inputs, Working Set and Outputs + DONE, plus 3 more sections
  • Instructions only: no scripts, shell commands, URLs or credentials in SKILL.md

What it does

Spectre Feature Root is an agent skill from joenandez/spectre. Internal initializer for a missing Spectre feature root. Invoke only from a standalone workflow with no confirmed managed root. Do NOT invoke for existing roots, orchestrated calls missing a root, or direct user requests.

Its SKILL.md is about 500 tokens, which your agent loads only when the skill is triggered. It is a single SKILL.md file with no bundled scripts.

The repository describes itself as: Spectre is a battle-tested 6 stage agentic engineering workflow for building complex, production-ready features. You stay in the loop for the decisions that matter. Your agents…. The licence is MIT.

Example prompts

  • “/spectre-feature-root”

Workflow steps

5 steps, taken from the first numbered list in SKILL.md.

  1. Use an explicit caller candidate/descendant. Reject absolute, traversal, symlink-escaping, or unmanaged paths.
  2. Otherwise derive a concise kebab name and choose the first free .spectre/{features|bugs}/[-N]/ per KIND. Never inspect or offer existing…
  3. Create feature.json containing only schema_version, created_at, feature, and repo-relative feature_root; no lifecycle, alias, branch, or…
  4. Unless .spectre/ is ignored, preserve .spectre/.gitignore; require literal manifest.json, bin/, handoffs/, !features/, !bugs/, plus…
  5. Write only root initialization.

What it can do on your machine

Read from SKILL.md and the folder at commit 931c9e8. It shows what the files ask for, not the result of running them.

  • Tool permissions

    Pre-approves nothing: there is no allowed-tools line, so your agent's usual permission prompts apply.

    From allowed-tools in the SKILL.md frontmatter.

  • Runs code

    No scripts in the folder and no shell commands in SKILL.md.

    From the folder's file list and the shell code blocks in SKILL.md.

  • Network

    No URLs in SKILL.md.

    From URLs in SKILL.md, links to its own repository left out.

  • Credentials

    Names no API keys, tokens, secrets or passwords.

    From names ending in _API_KEY, _TOKEN, _SECRET, _KEY or _PASSWORD in SKILL.md.

Context cost

Spectre Feature Root loads about 500 tokens when it runs. Until then it costs about 61 tokens; SKILL.md has 182 words of instructions outside code blocks.

Always · name and description, kept in context so the agent knows when to use it
~61
When it runs · the whole SKILL.md, loaded when a task matches
~500

Estimates: characters ÷ 4, the usual rule of thumb; real counts depend on the model's tokenizer. Scripts and assets cost tokens only if the agent reads them.

Safety

Auto-check passed

The automated check found no risky patterns in SKILL.md.

Automated static check — not a guarantee. Review scripts before installing. It scans the text of SKILL.md for risky patterns (piping downloads into a shell, reading credential files, hidden Unicode, destructive commands); files beside SKILL.md are not scanned.

SKILL.md

The full file from joenandez/spectre at commit 931c9e8, republished under its MIT licence (© joenandez). 182 words, ~500 tokens.

Download SKILL.mdSave it as .claude/skills/spectre-feature-root/SKILL.md (or your agent's skills folder).
name
spectre-feature-root
description
Internal initializer for a missing Spectre feature root. Invoke only from a standalone workflow with no confirmed managed root. Do NOT invoke for existing roots, orchestrated calls missing a root, or direct user requests.
user-invocable
false

feature-root

Purpose

Create a canonical root with no naming/reuse gate.

Inputs

Work/name hint; KIND=feature|bug (default feature); repo-relative candidate; write authority.

Working Set

Read exact candidates/ignore state only; never select existing work.

Outputs + DONE

Return FEATURE, repo-relative FEATURE_ROOT, warnings. DONE: valid root, neutral marker, tenancy, no phase artifact.

Method / guardrails

  1. Use an explicit caller candidate/descendant. Reject absolute, traversal, symlink-escaping, or unmanaged paths.
  2. Otherwise derive a concise kebab name and choose the first free .spectre/{features|bugs}/<name>[-N]/ per KIND. Never inspect or offer existing roots, ask whether to reuse one, present naming options, or wait for approval; suffixes resolve collisions.
  3. Create feature.json containing only schema_version, created_at, feature, and repo-relative feature_root; no lifecycle, alias, branch, or absolute path.
  4. Unless .spectre/ is ignored, preserve .spectre/.gitignore; require literal manifest.json, bin/, handoffs/, !features/, !bugs/, plus evidence/, checkpoints/, runs/, markers/, working_set.json, cleanup_summary.md, execution_state.md, reviews/task_review_attempt.json, reviews/task_review_safety.json under both features/**/ and bugs/**/. Specs/research/decisions/reviews/proof stay trackable. Never edit root .gitignore; warn on local-only matches.
  5. Write only root initialization.

Handoff

Return values/warnings; caller owns routing.

Escalate-If

Unsafe candidate/escape, marker/root conflict, or insufficient write authority. Naming ambiguity or collision never escalates.

© joenandez, MIT. Rendered from Markdown: HTML in the file is shown as text, images as links, and headings moved down two levels. Raw file

Files

Just SKILL.md in plugins/spectre/skills/spectre-feature-root of joenandez/spectre.

Open the folder on GitHubat commit 931c9e8

Compare with similar skills

Spectre Feature Root next to the 5 skills that share the most tags, products or categories with it. Stars are the repository's; “used in” counts other GitHub owners with a copy.

Spectre Feature Root compared with similar skills
SkillStarsUsed inTokensAuto-checkLicenceRepo updated
Spectre Feature Root this skilljoenandez/spectre164—~500Automated safety check: PassMIT
Internal Commsalirezarezvani/claude-skills28k—~3.4kAutomated safety check: PassMIT
Internal Communicationsickn33/agentic-awesome-skills47k1 repos~3.4kAutomated safety check: PassMIT
Internal Communications Writeranthropics/skills180k38 repos~378Automated safety check: PassApache-2.0
Internal Comms Anthropicsickn33/agentic-awesome-skills47k1 repos~702Automated safety check: PassApache-2.0
Nofollow Internalthedaviddias/Front-End-Checklist74k—~579Automated safety check: PassMIT

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  • Spectre Learn

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  • Spectre Rewrite Skill

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Questions about Spectre Feature Root

What does Spectre Feature Root do?

Internal initializer for a missing Spectre feature root. An agent skill from joenandez/spectre. Spectre Feature Root is an agent skill from joenandez/spectre. Internal initializer for a missing Spectre feature root.

How do I install Spectre Feature Root in Claude Code?

Run `npx skills add joenandez/spectre --skill spectre-feature-root -a claude-code`. Or copy the skill folder (plugins/spectre/skills/spectre-feature-root in joenandez/spectre) into .claude/skills/spectre-feature-root in your project. Claude Code loads it when a task matches its description.

How do I install Spectre Feature Root in Codex?

Run `npx skills add joenandez/spectre --skill spectre-feature-root -a codex`. Or copy the skill folder (plugins/spectre/skills/spectre-feature-root in joenandez/spectre) into .agents/skills/spectre-feature-root in your project. Codex loads it when a task matches its description.

Can I use Spectre Feature Root in Cursor, Gemini CLI or GitHub Copilot?

Cursor, Gemini CLI, GitHub Copilot and OpenCode also load SKILL.md folders. With the skills CLI, run `npx skills add joenandez/spectre --skill spectre-feature-root -a cursor` (or -a gemini-cli, github-copilot or opencode for the others). To copy it by hand, put the folder in .cursor/skills/spectre-feature-root, .gemini/skills/spectre-feature-root, .github/skills/spectre-feature-root and .opencode/skills/spectre-feature-root in your project.

What does Spectre Feature Root need to run?

SKILL.md names no scripts, command-line tools or credentials: Spectre Feature Root is instructions for the agent only.

Does Spectre Feature Root access the network?

SKILL.md contains no URLs. Any network use would come from the scripts or tools the agent runs. This is read from the text; nothing was executed.

Is Spectre Feature Root safe to install?

Our automated static check of SKILL.md found no risky patterns, such as piping downloads into a shell, reading credential files or hidden Unicode. It is not a guarantee. Review the folder before installing.

What licence does Spectre Feature Root use?

Spectre Feature Root is published under the MIT licence (the repository's licence). It allows redistribution, so the full SKILL.md is shown on this page.

How many tokens does Spectre Feature Root use?

About 500 tokens (SKILL.md is roughly 2k characters). Agents keep only the skill's name and description in context until a task matches; then they load SKILL.md in full.

What are the alternatives to Spectre Feature Root?

Skills that share tags, products or a category with Spectre Feature Root: Internal Comms (alirezarezvani/claude-skills, 28k stars), Internal Communication (sickn33/agentic-awesome-skills, 47k stars), Internal Communications Writer (anthropics/skills, 180k stars) and Internal Comms Anthropic (sickn33/agentic-awesome-skills, 47k stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.

Who maintains Spectre Feature Root?

joenandez (a GitHub user) maintains it in joenandez/spectre, which has 164 GitHub stars. The repository holds 26 skills in this directory. The repository was last updated on October 2, 2026.

Source: joenandez/spectre on GitHub. Facts on this page come from the repository at the commit we read; the author's words are quoted as theirs.