implement

implement is a skill for Claude Code from pe-menezes/vibeflow. It costs 79 tokens per session (2,089 once invoked), scanned A, original, MIT.

A spec-driven coding workflow that turns a written feature specification into code, tests, and a completion check. A spec describes what to build and the limits the work must follow.

In plain words
What is it for?
Use it to implement a feature from a file or feature name, following the project's existing code patterns and conventions. It also handles multi-part specifications and runs tests.
Why use it?
It reduces guesswork and scope creep by making the written specification the source of decisions. It also checks the requested completion conditions before finishing.

Skill for Claude Code

Written for Claude Code: allowed-tools in frontmatter.

Part of the vibeflow plugin — 10 skills, 1 agent shipped together

Good fit Use it to implement a feature from a file or feature name, following the project's existing code patterns and conventions. It also handles multi-part specifications and runs tests.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/pe-menezes/vibeflow/implement
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 pe-menezes/vibeflow --skill implement
Clone the repo
git clone --depth 1 https://github.com/pe-menezes/vibeflow

Made for: Claude Code.

Or install vibeflow, the plugin that ships this one along with the rest of its 10 skills, 1 agent.

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

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

Your own site · 80×15
<a href="https://agentmods.dev/skills/pe-menezes/vibeflow/implement"><img src="https://agentmods.dev/badge/skills/pe-menezes/vibeflow/implement.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 79 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 2,089 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. Third-party audits
  • NVIDIA SkillSpector pass 7 Sept 2026
SkillSpector: 1 finding, up to low

These are SkillSpector’s own severities. On a checked sample its high-severity flags on skills were ~96% false positives — a documented command, a public API, a “never do X” rule — so we show them as a caution to read, not a verdict. Why →

  • low Excessive Agency · line 133
    Skill's behavior or capabilities extend beyond its stated purpose. Scope creep allows an agent to perform actions unrelated to its documented functionality, increasing the attack surface.
    Fix: Limit the skill's scope to its documented purpose. Remove instructions that enable the agent to perform actions outside its stated functionality.
How audits are shown
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 $0.00079 $0.02089
Opus 5.5 $0.00032 $0.00836
Sonnet 5.5 $0.00016 $0.00418
Haiku 4.5 $0.00008 $0.00209

Measured 1mo ago against content hash 23740c2dac8d, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

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 1mo 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.

Origin

Copies of this mod

2 near-identical copies found in the catalogue:

plugins/vibeflow/skills/implement/SKILL.md · 223 lines

How it starts

The opening of the file, as written. The whole thing — 223 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Description and examples

What it does: Reads a spec from .vibeflow/specs/ (or by path), loads applicable patterns and conventions from .vibeflow/, identifies target files, and implements the feature following all spec guardrails (DoD, budget, anti-scope, pattern compliance). Runs tests and self-verifies each DoD check before finishing. This command puts the agent in Coding Agent mode — it follows the spec, it does NOT make architectural decisions.

Examples:

  • implement .vibeflow/specs/auto-install.md — Implement from spec file path.
  • implement auto-install — Same; agent finds the spec by feature name in .vibeflow/specs/.
  • implement .vibeflow/specs/auth-part-2.md — Implement part 2 of a multi-part spec (checks that part 1 dependencies are satisfied first).

Language

Detect the language of the user's current request or conversation. Write ALL output in that same language. Technical terms in English are acceptable regardless of the detected language.

Implement from the spec identified in the user's current request.


Role: Coding Agent

You are a coding agent: the spec decides, you execute. Deliver what the spec asks, at the scope it defines. Make routine judgment calls yourself; check in only when different readings would lead to materially different work. If the spec seems mistaken, say so in a sentence and continue as specified. Finish the whole task, and stop short of changes clearly beyond it.

Architectural decisions belong to the architect. When the spec doesn't cover a design choice, or is ambiguous on a point that matters, stop and ask instead of deciding.

Phase 0: Find and validate the spec

  1. Locate it. A file path (contains / or ends in .md) is read directly. A feature name is matched in .vibeflow/specs/ — exact (<requested-name>.md), then partial; several matches → list them and ask the user to choose; none → list the available specs and suggest gen-spec.
  2. Validate required sections: Definition of Done (at least 1 check), Scope ("Escopo"), Anti-scope ("Anti-escopo"). If any is missing, stop, list what's absent, and point to gen-spec.
  3. Dependencies: each spec listed under Dependencies needs an audit report in .vibeflow/audits/ with verdict PASS. If one lacks it, stop and list what must be implemented and audited first, in order. If no audits directory exists at all, warn ("Dependencies listed but no audit reports found — verify they are already implemented") and proceed.

Read the full file on GitHub · 223 lines

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. 1mo ago Changed · -1 lines 23740c2dac8d
  2. 1mo ago First seen · 224 lines · 79 tokens per session scan A 79ca15794d99

Subscribe to this mod's changes

implement is a skill published in the GitHub repository pe-menezes/vibeflow (31 stars, last pushed 1mo ago), licensed MIT. It adds 79 tokens to every session and 2,089 once invoked, about $0.0003 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 2026-08-30.

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