feature-implement

feature-implement is a skill for Claude Code, Codex from omnigent-ai/omnigent. It costs 17 tokens per session (334 once invoked), scanned A, original, Apache-2.0.

A workflow for implementing a feature and adding focused tests for each covered user task. It follows the repository's existing instructions and checks the parts of the code directly affected by the change.

In plain words
What is it for?
Use it to implement ticket requirements, reuse or extend nearby test cases, map tests to user tasks, and assess how the final change may affect other code.
Why use it?
It helps prevent changes that work only in one environment or tests that pass without proving the new behavior. It also avoids running the entire repository test suite locally when focused checks are enough.

Skill for Claude CodeCodex

Written for no agent in particular: nothing here depends on one. Also seen: mentions CLAUDE.md.

Good fit Use it to implement ticket requirements, reuse or extend nearby test cases, map tests to user tasks, and assess how the final change may affect other code.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/omnigent-ai/omnigent/feature-implement
About the project

Omnigent is an open-source orchestration layer for running and coordinating different AI coding agents through one system. It is for developers who want to combine agents, apply policies and sandboxing, and continue sessions across devices. The catalogue add-ons extend its agent workflows.

omnigent-ai/omnigent · 10,994 stars · on GitHub · omnigent.ai

Install

Getting it into your agent

One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.

Any agent
npx skills add omnigent-ai/omnigent --skill feature-implement
Clone the repo
git clone --depth 1 https://github.com/omnigent-ai/omnigent

Made for: Claude Code, Codex.

Wrote this? Show the measurements

A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.

agentmods badge for feature-implement

README.md
[![agentmods](https://agentmods.dev/badge/skills/omnigent-ai/omnigent/feature-implement/github.svg)](https://agentmods.dev/skills/omnigent-ai/omnigent/feature-implement)
Your own site
<a href="https://agentmods.dev/skills/omnigent-ai/omnigent/feature-implement"><img src="https://agentmods.dev/badge/skills/omnigent-ai/omnigent/feature-implement/github.svg" alt="Measured on agentmods" height="20"></a>

Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.

agentmods 80×15 button for feature-implement

Your own site · 80×15
<a href="https://agentmods.dev/skills/omnigent-ai/omnigent/feature-implement"><img src="https://agentmods.dev/badge/skills/omnigent-ai/omnigent/feature-implement.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 17 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 334 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. A grade says what 26 rules found in the file — not that it is safe.
Origin original No closer match found in the catalogue.
Token cost

What it costs to keep this loaded

Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.

ModelPer sessionOnce invoked
Fable 5.1 $0.00017 $0.00334
Opus 5.5 $0.00007 $0.00134
Sonnet 5.5 $0.00003 $0.00067
Haiku 4.5 $0.00002 $0.00033

Measured 6d ago against content hash 3d71a8c61260, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

feature-implement scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 6d ago.

A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.

Nothing flagged

None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.

dev/feature-agent/skills/feature-implement/SKILL.md · 28 lines

What it actually says

Implement and test

  1. Implement the design. Keep the change focused on the requirements. Follow the repository's conventions in CLAUDE.md, including framework-owned instructions, database query names, deprecation notes, and comment style.
  2. Test it. Read tests/README.md and tests/_helpers/README.md, then the nearest existing scenario. Reuse or extend existing coverage before adding setup. Put input matrices at the lowest reliable layer; add E2E only for a distinct process, transport, or browser boundary.
    • Map every covered CUJ to at least one test that exercises the new behavior. There is no fail-before proof for new behavior, but each test must fail if the feature were removed; a test that only passes is not coverage.
    • Run the directly affected test modules and focused checks. Do not run the full repository suite locally; CI owns that.
    • Check environment-derived defaults with ambient variables populated, so a test does not pass only because of the local environment.
  3. Assess the impact. Load otto-impact-assessment and apply it to the full diff. Record the results in the handoff's impact_assessment and test_audit.

If a requirement turns out to be infeasible, stop building it, mark its CUJs not covered with the reason, and continue with the rest. Then load feature-demo.

Changes

What this file has done since we first saw it

Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.

  1. 6d ago First seen · 28 lines · 17 tokens per session scan A 3d71a8c61260

Subscribe to this mod's changes

feature-implement is a skill published in the GitHub repository omnigent-ai/omnigent (10,994 stars, last pushed today), licensed Apache-2.0. It adds 17 tokens to every session and 334 once invoked, about $0.0001 per session on Opus 5.5. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-10-17.

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