noddde: Skill for Claude Code

.claude/skills/implement-spec/SKILL.md

implement-spec is a skill for Claude Code from dogganidhal/noddde. It costs 39 tokens per session (967 once invoked), scanned A, original, MIT.

A procedure for turning a written software specification into working code when the tests are already prepared and failing. It is one step in a six-step development process and does not create tests.

In plain words
What is it for?
It is for implementing a specification in an existing project, after running `/generate-tests` and before later validation steps.
Why use it?
It prevents implementation from starting before the specification and required tests are ready, and keeps test creation separate from code writing.

Skill for Claude Code

Written for Claude Code: allowed-tools in frontmatter. Also seen: model in frontmatter; mentions CLAUDE.md.

This is dogganidhal/noddde's own configuration. It tells Claude Code how to work on noddde itself, so it is not a mod to install elsewhere. Copy it as a starting point and replace the rules that are about this project. Everything noddde configures →

Reuse

Borrowing it

Nothing to install: this file belongs to dogganidhal/noddde. Take a copy, put it at the same path in your own repository, and replace the rules that are about this project with yours.

Copy the file
curl -O https://raw.githubusercontent.com/dogganidhal/noddde/main/.claude/skills/implement-spec/SKILL.md
Clone the repo
git clone --depth 1 https://github.com/dogganidhal/noddde

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-spec

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

Your own site · 80×15
<a href="https://agentmods.dev/skills/dogganidhal/noddde/implement-spec"><img src="https://agentmods.dev/badge/skills/dogganidhal/noddde/implement-spec.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 39 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 967 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 warn 7 Sept 2026
SkillSpector: 2 findings, up to medium

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 →

  • medium Excessive Agency · line 5
    Skill selects an external model or provider that may use a different account or billing plan than the operator expects. Undisclosed model switches can cause unexpected cost or quota consumption.
    Fix: Remove the model/provider override or disclose it prominently and require explicit operator approval before invoking an external coding CLI or billed model.
  • medium MCP Rug Pull · line 78
    npx commands without a version suffix (e.g. @1.0.0) create a rug-pull risk if the upstream server is compromised and publishes a malicious update.
    Fix: Pin the version: npx @scope/[email protected]
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 $0.00039 $0.00967
Opus 5.5 $0.00016 $0.00387
Sonnet 5.5 $0.00008 $0.00193
Haiku 4.5 $0.00004 $0.00097

Measured 2mo ago against content hash d5855bf1ee7c, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

implement-spec 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 2mo 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-spec/SKILL.md · 97 lines

How it starts

The opening of the file, as written. The whole thing — 97 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Step 3: Implement the Spec (Code Only)

Turn a behavioral specification into working code. Tests already exist and are RED — your job is to make them GREEN.

Pipeline step 3 of 6. Called by the /spec orchestrator after step 2 (test generation).

Key principle: This step writes ONLY implementation code. It does NOT generate tests — that was step 2. If tests don't exist yet, stop and tell the developer to run /generate-tests first.

Step 1: Verify Prerequisites

  1. Read the spec at the provided path
  2. Check status is ready or implementing — if draft, ask the developer to promote it first
  3. Check that tests exist: Look for the test file at the expected path:
    • specs/core/<path>/<name>.spec.md → packages/core/src/__tests__/<path>/<name>.test.ts
    • specs/integration/<name>.spec.md → packages/core/src/__tests__/integration/<name>.test.ts
  4. If tests don't exist: STOP. Tell the developer:
    ⚠️  No test file found at <expected-path>.
    Tests must be generated before implementation (RED-GREEN workflow).
    Run `/generate-tests <spec-path>` first.
    

Step 2: Read Everything

  1. Read the spec completely — all sections
  2. Read the source file at source_file from frontmatter
  3. Read the existing test file — understand what the tests expect
  4. Read dependency specs listed in depends_on — understand input types and contracts
  5. Read dependency source files — understand what's already implemented
  6. Read sample usage if relevant — search packages/samples/src/ for usage of the module

Step 3: Set Status

Update the spec frontmatter: status: implementing

Step 4: Implement

Replace throw new Error("Not implemented") stubs with working code.

Order: Implement behavioral requirements in their numbered order. Each requirement should be satisfiable independently.

Follow these conventions (from CLAUDE.md):

  • Functional style: no classes for domain concepts
  • Strict TypeScript: strict: true, noUncheckedIndexedAccess: true
  • JSDoc on all public exports
  • No decorators, no DI containers, no base classes for domain concepts
  • Handler signatures must match exactly:
    • Decide handlers: (command, state, infrastructure) => Event | Event[] | Promise<Event | Event[]>
    • Evolve handlers: (event.payload, state) => newState — pure, sync
    • Event handlers: (event.payload, infrastructure) => void | Promise<void>
    • Saga handlers: (event, state, infrastructure & CQRSInfrastructure) => SagaReaction | Promise<SagaReaction>
    • Query handlers: (query.payload, infrastructure) => Result | Promise<Result>
    • Projection reducers: (event, view) => view | Promise<view>

Read the full file on GitHub · 97 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. 2mo ago First seen · 97 lines · 39 tokens per session scan A d5855bf1ee7c

Subscribe to this mod's changes

implement-spec is a skill published in the GitHub repository dogganidhal/noddde (52 stars, last pushed 1mo ago), licensed MIT. It adds 39 tokens to every session and 967 once invoked, about $0.0002 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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