A software-delivery workflow that divides work between specialist agents and uses clear handoffs between stages.

Use it to organise software work, assign tasks to different agent roles, and reuse engineering skills across delivery stages.

It gives coding agents a shared process for moving work from one stage to the next, instead of leaving responsibilities unclear.

sdlc — Plugin by douglance

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.

Claude Code

/plugin marketplace add douglance/sdlc-plugin

agentmods

npx agentmods add plugins/douglance/sdlc-plugin/claude

Clone the repo

git clone --depth 1 https://github.com/douglance/sdlc-plugin

Made for: Claude Code.

Per session not measured What this adds to a session before it is invoked.

When invoked not measured Not applicable: nothing here is loaded into a session.

Security scan A 0 findings. Scan, not verified.

Origin 100% copy Near-identical to another mod in the catalogue.

Security

Grade A, and why

sdlc 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.

Origin

This is a copy

100% identical to sdlc — 0 lines differ, which has more behind it and is treated as the original. This page carries a canonical link to it rather than competing with it.

.claude/.claude-plugin/plugin.json · 11 lines

What it actually says

{
  "name": "sdlc",
  "description": "An adaptable software-delivery lifecycle with explicit handoffs, specialist agent roles, and reusable engineering skills.",
  "version": "0.5.1",
  "author": { "name": "Doug Lance" },
  "homepage": "https://github.com/douglance/sdlc-plugin",
  "repository": "https://github.com/douglance/sdlc-plugin",
  "license": "MIT",
  "keywords": ["sdlc", "agents", "skills", "workflow"]
}

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.

yesterday First seen · 11 lines scan A 714c069a3fc8

Subscribe to this mod's changes

sdlc is a plugin published in the GitHub repository douglance/sdlc-plugin (4 stars, last pushed 1mo ago), licensed MIT. Its token cost is not measured: this kind of file is read by the harness, not the model. A static security scan graded it A with 0 findings. It is 100% identical to sdlc, differing in 0 lines, and is treated as a copy.

Productivity

sdlc

Getting it into your agent

Grade A, and why

Nothing flagged

This is a copy

What it actually says

What this file has done since we first saw it

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