implement-feature

implement-feature is a skill for Claude Code from ArtemioPadilla/agent-triforce. It costs 35 tokens per session (475 once invoked), scanned A, original, MIT.

A workflow for building a software feature from an approved written specification. It covers design, coding, tests, and documentation.

In plain words
What is it for?
Use it to plan architecture, write code with test-driven development (writing tests before implementation), add integration tests, document decisions, and remove dead code.
Why use it?
It gives feature work a consistent path from requirements to verified code, reducing missed acceptance criteria and untested business rules.

Skill for Claude Code

Written for Claude Code: context: fork in frontmatter. Also seen: agent in frontmatter.

Good fit Use it to plan architecture, write code with test-driven development (writing tests before implementation), add integration tests, document decisions, and remove dead code.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/artemiopadilla/agent-triforce/implement-feature
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 ArtemioPadilla/agent-triforce --skill implement-feature
Clone the repo
git clone --depth 1 https://github.com/ArtemioPadilla/agent-triforce

Made for: Claude Code.

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 implement-feature

README.md
[![agentmods](https://agentmods.dev/badge/skills/artemiopadilla/agent-triforce/implement-feature/github.svg)](https://agentmods.dev/skills/artemiopadilla/agent-triforce/implement-feature)
Your own site
<a href="https://agentmods.dev/skills/artemiopadilla/agent-triforce/implement-feature"><img src="https://agentmods.dev/badge/skills/artemiopadilla/agent-triforce/implement-feature/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 implement-feature

Your own site · 80×15
<a href="https://agentmods.dev/skills/artemiopadilla/agent-triforce/implement-feature"><img src="https://agentmods.dev/badge/skills/artemiopadilla/agent-triforce/implement-feature.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 35 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 475 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 $0.00035 $0.00475
Opus 5 $0.00017 $0.00237
Sonnet 5 $0.00007 $0.00095
Haiku 4.5 $0.00003 $0.00047

Measured 9d ago against content hash 5144b57c6f82, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-09, from the pricing page.

Security

Grade A, and why

implement-feature 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 9d 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.

.claude/skills/implement-feature/SKILL.md · 48 lines

What it actually says

Implement the feature: $ARGUMENTS

Follow these steps:

SIGN IN:

  • Run the SIGN IN checklist from your agent file
  • Run the Receiving-from-Prometeo checklist to verify the spec handoff
  • If significant architecture decisions are needed, create an ADR in docs/adr/

DESIGN:

  1. Define interfaces/contracts first — program to interfaces, not implementations
  2. Plan the layer structure: entities → use cases → adapters → frameworks (Clean Architecture)
  3. Identify which business logic needs TDD (test-first) vs infrastructure glue (test-after acceptable)

BUILD (TDD Cycle): 4. For each piece of business logic: a. Red: Write a failing test that describes the expected behavior (Arrange-Act-Assert) b. Green: Write minimal code to make the test pass c. Refactor: Clean up — extract methods, improve names, remove duplication d. Verify each acceptance criterion from the spec has at least one test — if not, write one before proceeding 5. Implement infrastructure/adapters and write integration tests for critical paths 6. Scan for and remove any dead code you introduced or found

⏸️ TIME OUT — Run Implementation Complete Checklist (DO-CONFIRM): 7. Run through every item in the Implementation Complete checklist from your agent file 8. Fix any failures BEFORE proceeding

REFACTORING PASS: 9. Review all new code for code smells: long methods, feature envy, data clumps, primitive obsession 10. Apply Extract Method, Rename, Move as needed — leave code better than you found it

⏸️ TIME OUT — Run Pre-Delivery Checklist (DO-CONFIRM): 11. Run through every item in the Pre-Delivery checklist from your agent file 12. Fix any failures BEFORE proceeding

SIGN OUT: 13. Write the Handoff-to-Centinela using the communication checklist 14. Run the SIGN OUT checklist from your agent file

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. 9d ago First seen · 48 lines · 35 tokens per session scan A 5144b57c6f82

Subscribe to this mod's changes

implement-feature is a skill published in the GitHub repository ArtemioPadilla/agent-triforce (3 stars, last pushed 4mo ago), licensed MIT. It adds 35 tokens to every session and 475 once invoked, about $0.0002 per session on Opus 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 2026-08-31.

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