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.
npx skills add tomzx/agents --skill initialize-sdlc-directorygit clone --depth 1 https://github.com/tomzx/agentsWrote 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.
[](https://agentmods.dev/skills/tomzx/agents/initialize-sdlc-directory)<a href="https://agentmods.dev/skills/tomzx/agents/initialize-sdlc-directory"><img src="https://agentmods.dev/badge/skills/tomzx/agents/initialize-sdlc-directory/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.
<a href="https://agentmods.dev/skills/tomzx/agents/initialize-sdlc-directory"><img src="https://agentmods.dev/badge/skills/tomzx/agents/initialize-sdlc-directory.svg" alt="Reviewed on agentmods" width="80" height="20"></a>- NVIDIA SkillSpector warn
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 Rogue Agent · line 15 Skill establishes unauthorized persistence across sessions via cron jobs, startup scripts, or state files. Session persistence allows an attacker to maintain access beyond the current interaction.Fix: Remove any persistence mechanisms (cron jobs, startup scripts, state files). Skills should not maintain state across sessions without explicit user consent.
- medium Rogue Agent · line 88 Skill establishes unauthorized persistence across sessions via cron jobs, startup scripts, or state files. Session persistence allows an attacker to maintain access beyond the current interaction.Fix: Remove any persistence mechanisms (cron jobs, startup scripts, state files). Skills should not maintain state across sessions without explicit user consent.
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.
| Model | Per session | Once invoked |
|---|---|---|
| Fable 5.1 | $0.00027 | $0.02302 |
| Opus 5 | $0.00014 | $0.01151 |
| Sonnet 5 | $0.00005 | $0.00460 |
| Haiku 4.5 | $0.00003 | $0.00230 |
Grade A, and why
initialize-sdlc-directory 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.
How it starts
The opening of the file, as written. The whole thing — 144 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Initialize SDLC Directory
Creates the .sdlc/ directory structure in the project root (or $1 if provided) and populates it with default templates.
Already-existing files are never overwritten — this is safe to run on a project that has partially adopted the structure.
Prerequisites
- Apply the shared SDLC conventions in
skills/sdlc/references/shared.md. - Write access to the project root
- The canonical templates at
../sdlc/templates/relative to this skill file (i.e.skills/sdlc/templates/)
Steps
-
Determine the project root: use
$1if provided, otherwise use the current working directory. -
Resolve the SDLC write location per
sdlc/references/shared.md: default<project-root>/.sdlc/; if it cannot be created andSDLC_DIRis set, use$SDLC_DIR/{owner}/{repository}/.sdlc/; mirror created files to the external store when set. Record which location was used in the report. -
Pre-approve the external SDLC stores in the agent CLI. Most harnesses prompt before reading or writing outside the workspace; grant read/write for
~/.sdlc/**and/tmp/sdlc/**up front. Detect which config(s) exist and add only missing entries, preserving all other fields:- opencode (
~/.config/opencode/opencode.json): setpermission.external_directoryentries"~/.sdlc/**": "allow"and"/tmp/sdlc/**": "allow". - Claude Code: add
Read(~/.sdlc/**),Edit(~/.sdlc/**),Read(/tmp/sdlc/**),Edit(/tmp/sdlc/**)topermissions.allowin its user settings file.
For any other harness, add the equivalent entry following its own schema. Record what was created, updated, or skipped (already present), and remind the user to restart their CLI.
- opencode (
-
For each directory below, create it (under the resolved write location) if it does not already exist:
.sdlc/ .sdlc/context/ .sdlc/features/ .sdlc/templates/ .sdlc/templates/features/ .sdlc/templates/knowledge/ .sdlc/knowledge/ .sdlc/knowledge/assumptions/ .sdlc/knowledge/decisions/ .sdlc/knowledge/learnings/ .sdlc/knowledge/questions/
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.
- 5d ago Changed scan B → A 2b0702db1b70
- 5d ago First seen · 144 lines · 27 tokens per session scan B 244cd0e63bfb
initialize-sdlc-directory is a skill published in the GitHub repository tomzx/agents (6 stars, last pushed today), licensed MIT. It adds 27 tokens to every session and 2,302 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 2026-09-03.
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