sdlc

sdlc is a skill for Claude Code, Codex from BaseInfinity/claude-sdlc-harness. It costs 56 tokens per session (10,364 once invoked), scanned A, original, no licence file.

A software-development workflow for adding features, fixing bugs, changing code, testing it, and releasing or deploying it.

In plain words
What is it for?
Use it when building or changing software, running tests, fixing defects, refactoring code, or preparing a release, publication, or deployment.
Why use it?
It gives the coding agent a defined process for taking code changes from implementation through delivery.

Skill for Claude CodeCodex

Part of the sdlc-wizard-cowork plugin — 2 skills shipped together

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 skills/baseinfinity/claude-sdlc-harness/sdlc
Any agent
npx skills add BaseInfinity/claude-sdlc-harness --skill sdlc
Clone the repo
git clone --depth 1 https://github.com/BaseInfinity/claude-sdlc-harness

Made for: Claude Code, Codex.

Or install sdlc-wizard-cowork, the plugin that ships this one along with the rest of its 2 skills.

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 sdlc

README.md
[![agentmods](https://agentmods.dev/badge/skills/baseinfinity/claude-sdlc-harness/sdlc.svg)](https://agentmods.dev/skills/baseinfinity/claude-sdlc-harness/sdlc)
Your own site
<a href="https://agentmods.dev/skills/baseinfinity/claude-sdlc-harness/sdlc"><img src="https://agentmods.dev/badge/skills/baseinfinity/claude-sdlc-harness/sdlc.svg" alt="Measured on agentmods" height="20"></a>
Per session 56 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 10,364 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. Scan, not verified.
Origin unknown 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 $0.00056 $0.10364
Opus 5 $0.00028 $0.05182
Sonnet 5 $0.00011 $0.02073
Haiku 4.5 $0.00006 $0.01036

Measured 5d ago against content hash 49331c93f386, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

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 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.

cowork/skills/sdlc/SKILL.md · 337 lines

The source is not reproduced here

No licence file

A repository with no LICENSE is all rights reserved by default, so the body is not copied here. The metadata, the measurements and the link are.

Read it on GitHub

Files

What ships with it

1 file beside SKILL.md in the same directory: the scripts, references and assets a skill reads on demand. Not counted in the per-session cost; read them before you install if any of them is executable.

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 · 337 lines · 56 tokens per session scan A 49331c93f386

Subscribe to this mod's changes

sdlc is a skill published in the GitHub repository BaseInfinity/claude-sdlc-harness (47 stars, last pushed 8d ago), with no licence file. It adds 56 tokens to every session and 10,364 once invoked, about $0.0003 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.

Related

Other skills, from other repositories

cli-forge-github

Audit and fix GitHub repository health: rulesets vs CI alignment, branch hygiene, PR lifecycle, release automation flow, permission issues, and transient CI failures. Detects misconfigurations that cause PRs to hang, CI to fail silently, branches to accumulate, and releases to stall. Use when the user says 'PR stuck'…

Destynova2/cli-code-skills · 165 tokens

cli-audit-tangle

Detect spaghetti code and dependency cycles using graph theory, spectral analysis, and biomimetic patterns. Finds god functions, circular dependencies, dead code, suboptimal module boundaries, CI/CD pipeline deadlocks, and inefficient call patterns. Uses call graph topology (not just line-level metrics) to identify…

Destynova2/cli-code-skills · 220 tokens

cli-watermark

Steganographic code watermarking for IP defense. Generates multi-layered fingerprints that survive AI rewrites, language changes, renaming, and clean-code passes. Produces timestamped cryptographic commitments for legal proof of authorship. Use when the user wants to watermark a codebase, protect IP, prove code…

Destynova2/cli-code-skills · 140 tokens

cli-audit-data

Audit PostgreSQL database safety in Rust/SQLx applications. Use for schemas, migrations, constraints, indexes, transactions, repositories, state transitions, idempotency, concurrency, queues, multi-tenancy, soft deletion, ledgers, auditability, repair, database incidents, or whenever SQLx and PostgreSQL changes could…

Destynova2/cli-code-skills · 85 tokens

cli-forge-doc

Generate and audit comprehensive project documentation from a Git repository. Produces standard documentation (CONTRIBUTING.md, architecture, troubleshooting) in Diataxis structure with zero AI markers by default. Use this skill whenever someone asks to document a project, generate docs, create a README, write API…

Destynova2/cli-code-skills · 104 tokens

cli-forge-resilience

Generate a production-parity resilience blueprint: test battery, troubleshooting runbook, agent-ready operations pack, failure-injection plan, and incident blackbox templates. Uses biological and physical reasoning — genome/contracts, membranes/boundary conditions, homeostasis/health checks, immune system/negative…

Destynova2/cli-code-skills · 152 tokens