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Agent skill

Implement Feature

by Log2n-io in Log2n-io/Typhon

Implement a GitHub issue end-to-end — scope it (whole issue or specific phases), build an acceptance-criteria plan from its design doc, get the plan approved, then develop autonomously with tests…

Custom licenceAuto-check passedDevelopment

Install Implement Feature

skills CLI
$ npx skills add Log2n-io/Typhon --skill implement-feature -a claude-code

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

GitHub CLI
$ gh skill install Log2n-io/Typhon implement-feature --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/Log2n-io/Typhon.git skills-src && mkdir -p .claude/skills && cp -r skills-src/.claude/skills/implement-feature .claude/skills/implement-feature && 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
implement-feature
GitHub stars
250
Token cost
~2k tokens
SKILL.md length
1,046 words
Files
1
Skills in repo
17
Repo updated
First seen
Licence
Custom licence

At a glance

Implement a GitHub issue end-to-end — scope it (whole issue or specific phases), build an acceptance-criteria plan from its design doc, get the plan approved, then develop autonomously with tests…

  • Works in 8 steps: Fetch the issue & locate the design doc → Propose the scope → Build the implementation plan → …
  • Tasks that involve Architecture decision records
  • SKILL.md covers Input, Help, Workflow and Impediments — when to stop
  • Calls python3 and dotnet

What it does

Implement Feature is an agent skill from Log2n-io/Typhon. Implement a GitHub issue end-to-end — scope it (whole issue or specific phases), build an acceptance-criteria plan from its design doc, get the plan approved, then develop autonomously with tests and a mandatory code review.

Its SKILL.md is about 2k tokens, which your agent loads only when the skill is triggered. It is a single SKILL.md file with no bundled scripts.

It sits in Development, covering Architecture decision records, User stories and Code review. It works with GitHub. The repository describes itself as: A microsecond-latency ACID database engine with a native Entity-Component-System data model, built for real-time systems.

When your agent uses it

  • Tasks that involve Architecture decision records
  • Tasks that involve User stories
  • Tasks that involve Code review

Example prompts

  • “/implement-feature”

Requirements

  • Python 3

Workflow steps

8 steps, taken from the step headings in SKILL.md.

  1. Fetch the issue & locate the design doc
  2. Propose the scope
  3. Build the implementation plan
  4. Prepare the workspace
  5. Develop autonomously
  6. Verify
  7. Code review — mandatory gate
  8. Complete

What it can do on your machine

Read from SKILL.md and the folder at commit fec10f5. 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

    Shell commands in SKILL.md call:

    • python3
    • dotnet

    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

Implement Feature loads about 2k tokens when it runs. Until then it costs about 61 tokens; SKILL.md has 1,046 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
~2k

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

Its licence (Custom licence) doesn't allow us to republish the file, so here is its outline and opening line. It has 1,046 words (~2,044 tokens).

“Take a GitHub issue as the entry point and carry it through to a reviewed, tested implementation: scope it, plan it against its design doc, get the plan approved, then develop it autonomously.”

— opening of SKILL.md by Log2n-io, Custom licence
name
implement-feature
argument-hint
[issue number]

Read the full SKILL.md on GitHub

Files

Just SKILL.md in .claude/skills/implement-feature of Log2n-io/Typhon.

Open the folder on GitHubat commit fec10f5

Compare with similar skills

Implement Feature 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.

Implement Feature compared with similar skills
SkillStarsUsed inTokensAuto-checkLicenceRepo updated
Implement Feature this skillLog2n-io/Typhon250—~2kAutomated safety check: PassCustom licence
Vibe CodingOfficeDev/microsoft-365-agents-toolkit781—~5.5kAutomated safety check: PassCustom licence
Ad ReviewCorridorTech/PoseCap220—~2.4kAutomated safety check: NotesApache-2.0
Reviewgenkovich/sdd171—~1.9kAutomated safety check: PassMIT
Code ReviewOpenHands/extensions157—~2.1kAutomated safety check: PassMIT
Solo ReviewLeoYeAI/openclaw-master-skills2.2k—~5.6kAutomated safety check: NotesMIT

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    genkovich/sdd

    A skill your agent uses to run an independent, clean-context code review of an implemented feature against its spec and acceptance criteria before shipping.

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  • Code Review

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More from Log2n-io/Typhon

All 17 skills in this repo

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  • Complete Subtask

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  • Complete Task

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    250 GitHub stars~2.1k tokensUpdated yesterday
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  • Coverage

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    Run code coverage analysis, track class-level results, and generate trend reports

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  • Create Issue

    Log2n-io/Typhon

    Create a GitHub issue and add it to the Typhon org project. An agent skill from Log2n-io/Typhon.

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  • Dev Status

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    Show current development status from GitHub Project. An agent skill from Log2n-io/Typhon.

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Works with

Categories

Questions about Implement Feature

What does Implement Feature do?

Implement a GitHub issue end-to-end — scope it (whole issue or specific phases), build an acceptance-criteria plan from its design doc, get the plan approved, then develop autonomously with tests…. Implement Feature is an agent skill from Log2n-io/Typhon. Implement a GitHub issue end-to-end — scope it (whole issue or specific phases), build an acceptance-criteria plan from its design doc, get the plan approved, then develop autonomously with tests and a mandatory code review.

When should I use Implement Feature?

Implement Feature fits situations like: tasks that involve Architecture decision records; tasks that involve User stories; tasks that involve Code review.

How do I install Implement Feature in Claude Code?

Run `npx skills add Log2n-io/Typhon --skill implement-feature -a claude-code`. Or copy the skill folder (.claude/skills/implement-feature in Log2n-io/Typhon) into .claude/skills/implement-feature in your project. Claude Code loads it when a task matches its description.

How do I install Implement Feature in Codex?

Run `npx skills add Log2n-io/Typhon --skill implement-feature -a codex`. Or copy the skill folder (.claude/skills/implement-feature in Log2n-io/Typhon) into .agents/skills/implement-feature in your project. Codex loads it when a task matches its description.

Can I use Implement Feature 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 Log2n-io/Typhon --skill implement-feature -a cursor` (or -a gemini-cli, github-copilot or opencode for the others). To copy it by hand, put the folder in .cursor/skills/implement-feature, .gemini/skills/implement-feature, .github/skills/implement-feature and .opencode/skills/implement-feature in your project.

What does Implement Feature need to run?

Going by SKILL.md and its folder, Implement Feature needs the command-line tools its instructions call (python3 and dotnet). Our summary lists: Python 3.

Does Implement Feature 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 Implement Feature 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 Implement Feature use?

Implement Feature has a licence file (the repository's licence) that doesn't match a standard licence. Read it on GitHub before reusing the skill.

How many tokens does Implement Feature use?

About 2k tokens (SKILL.md is roughly 8.2k 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 Implement Feature?

Skills that share tags, products or a category with Implement Feature: Vibe Coding (OfficeDev/microsoft-365-agents-toolkit, 781 stars), Ad Review (CorridorTech/PoseCap, 220 stars), Review (genkovich/sdd, 171 stars) and Code Review (OpenHands/extensions, 157 stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.

Who maintains Implement Feature?

Log2n-io (a GitHub organization) maintains it in Log2n-io/Typhon, which has 250 GitHub stars. The repository holds 17 skills in this directory. The repository was last updated on October 6, 2026.

Source: Log2n-io/Typhon on GitHub. Facts on this page come from the repository at the commit we read; the author's words are quoted as theirs.