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 agentmods add skills/gh33k/session-plugin/initnpx skills add gh33k/session-plugin --skill initgit clone --depth 1 https://github.com/gh33k/session-pluginWhat 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 | $0.00030 | $0.01574 |
| Opus 5 | $0.00015 | $0.00787 |
| Sonnet 5 | $0.00006 | $0.00315 |
| Haiku 4.5 | $0.00003 | $0.00157 |
Grade A, and why
init 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.
How it starts
The opening of the file, as written. The whole thing — 305 lines — stays where its author put it; the contents beside it link to each section on GitHub.
session:init
Initialize session workflow. For existing projects, analyzes codebase and pre-fills templates. For empty projects, asks what you're building and generates starter templates.
Instructions
1. Check Existing Structure
ls -d .project .beads .context 2>/dev/null
If .project/ exists, ask: Skip / Merge / Replace?
2. Detect Project State
ls -A | head -20
If empty or only has .git: → Go to Empty Project Flow If has files: → Go to Existing Project Flow
Empty Project Flow
E1. Ask What They're Building
New project detected. What are you building?
1. Web App (frontend with React/Vue/Next.js)
2. API/Backend (Node/Python/Go/Rust)
3. CLI Tool
4. Library/Package
5. Full-Stack (frontend + backend)
6. Other (describe it)
E2. Ask for Project Name and Description
What should we call this project? (short name)
Brief description? (1-2 sentences)
E3. Generate Starter Templates
Based on selection, create .project/ files with suggested stack:
| Type | Suggested Stack |
|---|---|
| Web App | TypeScript, React/Next.js, Tailwind, Vitest |
| API/Backend | TypeScript/Python, Express/FastAPI, Jest/Pytest |
| CLI Tool | TypeScript/Rust, Commander/Clap |
| Library | TypeScript, Vitest, tsup for bundling |
| Full-Stack | TypeScript, Next.js or separate frontend/backend |
Create directories and templates (see Create Directories and templates below).
E4. Report and Suggest Plan Session
Project initialized: {name}
Created .project/ with starter templates for {type}.
Stack suggestion: {suggested stack}
Next step: /session:start plan
In the plan session, you'll:
- Refine the project scope and architecture
- Define principles and constraints
- Break down into initial tasks
- Set your first focus area
Stop here for empty projects.
Existing Project Flow
3. Analyze Codebase
What ships with it
5 files 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.
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 · 305 lines · 30 tokens per session scan A 5495e732a01d
init is a skill published in the GitHub repository gh33k/session-plugin (2 stars, last pushed 7mo ago), licensed MIT. It adds 30 tokens to every session and 1,574 once invoked, about $0.0002 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 2026-08-31.
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