speckit.implement

speckit.implement is a command for Cursor from fstandhartinger/ralph-wiggum. It costs 11 tokens per session (630 once invoked), scanned A, original, MIT.

An implementation command that repeatedly works through software specifications until their acceptance checks and completion requirements pass. A specification is a written description of what should be built.

In plain words
What is it for?
Use it to implement a selected specification from a specs directory while consulting project principles, development guidelines, and available tests.
Why use it?
It provides a structured way to implement all requirements and verify the result instead of stopping after partial progress.

Command for Cursor

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/fstandhartinger/ralph-wiggum/speckit.implement
Clone the repo
git clone --depth 1 https://github.com/fstandhartinger/ralph-wiggum

Made for: Cursor.

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 speckit.implement

README.md
[![agentmods](https://agentmods.dev/badge/commands/fstandhartinger/ralph-wiggum/speckit.implement.svg)](https://agentmods.dev/commands/fstandhartinger/ralph-wiggum/speckit.implement)
Your own site
<a href="https://agentmods.dev/commands/fstandhartinger/ralph-wiggum/speckit.implement"><img src="https://agentmods.dev/badge/commands/fstandhartinger/ralph-wiggum/speckit.implement.svg" alt="Measured on agentmods" height="20"></a>
Per session 11 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.
When invoked 630 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 $0.00011 $0.00630
Opus 5 $0.00005 $0.00315
Sonnet 5 $0.00002 $0.00126
Haiku 4.5 $0.00001 $0.00063

Measured 5d ago against content hash c357b3f26ed9, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

speckit.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 5d 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.

.cursor/commands/speckit.implement.md · 88 lines

How it starts

The opening of the file, as written. The whole thing — 88 lines — stays where its author put it; the contents beside it link to each section on GitHub.

User Input

$ARGUMENTS

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

Overview

This command launches the Ralph Wiggum implementation loop to process specifications autonomously. The agent iterates until acceptance criteria and Completion Signal requirements pass.

Prerequisites

  1. Ralph Wiggum Plugin: Must be installed in Claude Code

    /plugin install ralph-loop@claude-plugins-official
    
  2. At least one spec: Specs must exist in specs/ with Completion Signal sections

  3. Context files:

    • .specify/memory/constitution.md — Project principles
    • AGENTS.md — Development guidelines
    • RALPH_PROMPT.md — Master prompt (optional, can use inline)

Execution

Option A: Single Spec

If $ARGUMENTS specifies a single spec (e.g., "001-user-auth"):

/ralph-loop:ralph-loop "Implement the spec $ARGUMENTS from specs/$ARGUMENTS/spec.md.

Context:
- Read .specify/memory/constitution.md for project principles
- Read AGENTS.md for development guidelines

Process:
1. Read and understand the full spec
2. Implement all requirements
3. Complete ALL items in the Completion Signal section
4. Run all tests (unit, integration, browser, visual)
5. Verify no console/network errors
6. Commit and push changes
7. Deploy if required and verify
8. Iterate until all checks pass

Output <promise>DONE</promise> when ALL checks pass." --completion-promise "DONE" --max-iterations 30

Option B: All Specs (Master Loop)

If no specific spec provided, run the master loop:

/ralph-loop:ralph-loop "Work through all specifications in specs/ folder, implementing each one until its acceptance criteria pass, then move to the next.

Context:
- Read .specify/memory/constitution.md for project principles
- Read AGENTS.md for development guidelines

For each spec in numerical order:
1. Read the spec from specs/{spec-name}/spec.md
2. Implement all requirements
3. Complete ALL items in the Completion Signal section
4. Commit, push, and verify deployment
5. Update history if required
6. Move to next spec

Output <promise>ALL_DONE</promise> when all specs complete." --completion-promise "ALL_DONE" --max-iterations 100

Read the full file on GitHub · 88 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. 5d ago First seen · 88 lines · 11 tokens per session scan A c357b3f26ed9

Subscribe to this mod's changes

speckit.implement is a command published in the GitHub repository fstandhartinger/ralph-wiggum (292 stars, last pushed 3mo ago), licensed MIT. It adds 11 tokens to every session and 630 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 2026-08-30.