sddp-reverseengineer

sddp-reverseengineer is a command for Claude Code, GitHub Copilot from attilaszasz/sdd-pilot. It costs 0 tokens per session (162 once invoked), scanned A, original, MIT.

A command for reconstructing documentation about an existing codebase through a resumable, evidence-led process. It asks before important decisions and publication, rather than treating silence as approval.

In plain words
What is it for?
Use it to start, resume, or check the status of an existing-project onboarding process. It reports progress and produces findings through the repository's reverse-engineering workflow.
Why use it?
It reduces the risk of making unsupported assumptions about unfamiliar software. It also keeps repository inspection and network or execution access under explicit approval.

Command for Claude CodeGitHub Copilot

Written for Claude Code and GitHub Copilot: $ARGUMENTS substitution, but also a Copilot chat mode or prompt. Also seen: agent in frontmatter.

Good fit Use it to start, resume, or check the status of an existing-project onboarding process. It reports progress and produces findings through the repository's reverse-engineering workflow.

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Install with agentmods
npx agentmods add commands/attilaszasz/sdd-pilot/sddp-reverseengineer
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.

Clone the repo
git clone --depth 1 https://github.com/attilaszasz/sdd-pilot

Made for: Claude Code, GitHub Copilot.

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 sddp-reverseengineer

README.md
[![agentmods](https://agentmods.dev/badge/commands/attilaszasz/sdd-pilot/sddp-reverseengineer/github.svg)](https://agentmods.dev/commands/attilaszasz/sdd-pilot/sddp-reverseengineer)
Your own site
<a href="https://agentmods.dev/commands/attilaszasz/sdd-pilot/sddp-reverseengineer"><img src="https://agentmods.dev/badge/commands/attilaszasz/sdd-pilot/sddp-reverseengineer/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 sddp-reverseengineer

Your own site · 80×15
<a href="https://agentmods.dev/commands/attilaszasz/sdd-pilot/sddp-reverseengineer"><img src="https://agentmods.dev/badge/commands/attilaszasz/sdd-pilot/sddp-reverseengineer.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 0 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.
When invoked 162 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.
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 $0.00000 $0.00162
Opus 5.5 $0.00000 $0.00065
Sonnet 5.5 $0.00000 $0.00032
Haiku 4.5 $0.00000 $0.00016

Measured today against content hash f339a5d9774a, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

sddp-reverseengineer 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 today.

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.

.github/prompts/sddp-reverseengineer.prompt.md · 14 lines

What it actually says

Command description: Onboard an existing codebase through resumable, evidence-led bootstrap reconstruction. Argument hint: [repository scope or context; --resume or --status] Command category: project-bootstrap Prerequisites: none

Pass $ARGUMENTS unchanged, or empty when omitted. No control starts onboarding; supported controls are --resume and --status.

Load and follow the workflow in .github/sddp/workflows/reverse-engineering/WORKFLOW.md.

Ask explicitly and wait at every consequential decision/publication checkpoint. Recommendations are guidance only; never infer answers from silence or a partial response. Allow free-form answers wherever the workflow permits them. Default to static local inspection; repository execution and network access need explicit bounded approval. Report milestone progress.

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. today First seen · 14 lines · 0 tokens per session scan A f339a5d9774a

Subscribe to this mod's changes

sddp-reverseengineer is a command published in the GitHub repository attilaszasz/sdd-pilot (98 stars, last pushed today), licensed MIT. It costs nothing until one of its globs matches a file; then it loads 162 tokens. 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 2026-10-21.