implement

A command that turns an approved design for a use case—a specific user interaction or goal—into working, tested code.

In plain words
What is it for?
Planning, coding, and testing one use case after running the matching /design command.
Why use it?
It prevents coding from starting without a documented design and keeps the implementation tied to requirements and acceptance criteria.

Command for Claude Code

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 commands/washingtonwei/project-pulse/implement
Clone the repo
git clone --depth 1 https://github.com/Washingtonwei/project-pulse

Made for: Claude Code.

Per session 27 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.
When invoked 2,563 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 $0.00027 $0.02563
Opus 5 $0.00014 $0.01282
Sonnet 5 $0.00005 $0.00513
Haiku 4.5 $0.00003 $0.00256

Measured yesterday against content hash a59e2dd31624, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, 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 yesterday.

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/commands/implement.md · 68 lines

How it starts

The opening of the file, as written. The whole thing — 68 lines — stays where its author put it; the contents beside it link to each section on GitHub.

/implement — Implement a use case from its design

Take the use case named in $ARGUMENTS (e.g. UC-DOC-create-use-case) and drive it from its design-of-record to working, tested code. This is the second of the two build stages: /design <UC-ID> produces the Level-2 design doc under docs/design/; /implement implements it. The use case is the contract; the linked FRs are the acceptance criteria; the glossary fixes the vocabulary; the design doc is the how you implement.

Precondition — the design must exist. This command builds from an approved design; it does not invent one. Before planning, confirm the area's design doc (docs/design/<area>.md) exists and covers this use case (the 📐 Designed Build state in docs/traceability.md, or a Realizes: header listing this UC-). If there is no design for this use case, stop and tell the developer to run /design <UC-ID> first (or offer to switch to designing it) — don't design-on-the-fly inside the code stage.

The spec and the design are authoritative but not infallible — challenge them. As you drive the design into code, you will hit ambiguous or underspecified steps, assumptions that don't survive contact with the existing code, requirements or design choices that contradict each other or reality, and — because the docs are written by humans and age — unnecessary or incorrect constraints, out-of-date information, wrong assumptions, or an approach that simply isn't best practice or the most efficient one. When that happens, ask the developer a clarifying question or push back — do not silently comply, do not silently invent the missing detail, and do not inherit a constraint just because it's written down. Name the gap or the better way, say what you'd do and why; when it's a genuine spec defect propose the doc edit (per docs/CLAUDE.md, then /spec-build), and when it's a design defect update design/<area>.md (per docs/design/README.md). A step with no backing FR, or a cited FR that doesn't exist, is a question to raise — not something to paper over. When in doubt, or when you see a better way, shout — this holds in every phase.

If no UC-ID is given, ask which use case to implement (or list candidate use cases whose Build state is 📐 Designed in docs/traceability.md — designed and ready to build).

Work in phases. The design was already reviewed and approved in /design, so /implement runs straight through to code — there is no second approval gate. The one thing that still stops you is trouble: if the design contradicts the spec or the existing code, or a decision neither settles, pause and raise it (see the "challenge them" principle above) rather than guessing.

Read the full file on GitHub · 68 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. yesterday First seen · 68 lines · 27 tokens per session scan A a59e2dd31624

Subscribe to this mod's changes

implement is a command published in the GitHub repository Washingtonwei/project-pulse (2 stars, last pushed 1mo ago), licensed Apache-2.0. It adds 27 tokens to every session and 2,563 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.