implement

implement is a skill for Claude Code, Codex from akka/ai-marketplace. It costs 16 tokens per session (2,503 once invoked), scanned A, original, Apache-2.0.

An implementation workflow that carries out the tasks listed in a feature's tasks.md file and works on the feature's designated branch.

In plain words
What is it for?
Use it to find a feature, verify its plan, create or switch to the correct Git branch, review checklist progress, and execute the planned development tasks.
Why use it?
It reduces the chance of implementing the wrong feature, skipping planned tasks, or changing the main branch. It also checks whether required planning files and checklists are available.

Skill for Claude CodeCodex

Written for no agent in particular: nothing here depends on one.

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.

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

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 implement

README.md
[![agentmods](https://agentmods.dev/badge/skills/akka/ai-marketplace/implement.svg)](https://agentmods.dev/skills/akka/ai-marketplace/implement)
Your own site
<a href="https://agentmods.dev/skills/akka/ai-marketplace/implement"><img src="https://agentmods.dev/badge/skills/akka/ai-marketplace/implement.svg" alt="Measured on agentmods" height="20"></a>
Per session 16 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 2,503 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. Scan, not verified.
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 $0.00016 $0.02503
Opus 5 $0.00008 $0.01252
Sonnet 5 $0.00003 $0.00501
Haiku 4.5 $0.00002 $0.00250

Measured 6d ago against content hash 9974ccb2fb39, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-06, 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 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.

skills/implement/SKILL.md · 155 lines

How it starts

The opening of the file, as written. The whole thing — 155 lines — stays where its author put it; the contents beside it link to each section on GitHub.

User Input

You MUST consider the user input before proceeding (if not empty).

Outline

  1. Call the akka_sdd_list_specs MCP tool to find features. Verify that tasks.md exists for the target feature (has_tasks must be true). If tasks.md is missing, instruct the user to run /akka:tasks first. Read the tasks.md content from FEATURE_DIR. Also note which other artifacts are available (AVAILABLE_DOCS).

  2. Create or check out the feature branch:

    • Read the spec.md from FEATURE_DIR and find the Feature Branch field (e.g. 001-counter-service)
    • Call akka_git_status to check the current branch
    • If not already on the feature branch, call akka_git_create_branch with the branch name from the spec
    • All implementation work must happen on the feature branch, not on main
  3. Check checklists status (if FEATURE_DIR/checklists/ exists):

    • Scan all checklist files in the checklists/ directory

    • For each checklist, count:

      • Total items: All lines matching - [ ] or - [X] or - [x]
      • Completed items: Lines matching - [X] or - [x]
      • Incomplete items: Lines matching - [ ]
    • Create a status table:

      | Checklist | Total | Completed | Incomplete | Status |
      |-----------|-------|-----------|------------|--------|
      | ux.md     | 12    | 12        | 0          | ✓ PASS |
      | test.md   | 8     | 5         | 3          | ✗ FAIL |
      | security.md | 6   | 6         | 0          | ✓ PASS |
      
    • Calculate overall status:

      • PASS: All checklists have 0 incomplete items
      • FAIL: One or more checklists have incomplete items
    • If any checklist is incomplete:

      • Display the table with incomplete item counts
      • STOP and ask: "Some checklists are incomplete. Do you want to proceed with implementation anyway? (yes/no)"
      • Wait for user response before continuing
      • If user says "no" or "wait" or "stop", halt execution
      • If user says "yes" or "proceed" or "continue", proceed to step 3

Read the full file on GitHub · 155 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. 6d ago First seen · 155 lines · 16 tokens per session scan A 9974ccb2fb39

Subscribe to this mod's changes

implement is a skill published in the GitHub repository akka/ai-marketplace (6 stars, last pushed 6d ago), licensed Apache-2.0. It adds 16 tokens to every session and 2,503 once invoked, about $0.0001 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.