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 jazzyalex/agent-sessions --skill sc-skillgit clone --depth 1 https://github.com/jazzyalex/agent-sessionsWrote 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/jazzyalex/agent-sessions/sc-skill)<a href="https://agentmods.dev/skills/jazzyalex/agent-sessions/sc-skill"><img src="https://agentmods.dev/badge/skills/jazzyalex/agent-sessions/sc-skill.svg" alt="Measured on agentmods" height="20"></a>- NVIDIA SkillSpector pass
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 | $0.00055 | $0.00769 |
| Opus 5 | $0.00028 | $0.00385 |
| Sonnet 5 | $0.00011 | $0.00154 |
| Haiku 4.5 | $0.00006 | $0.00077 |
Grade A, and why
sc-skill 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 8d 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 — 80 lines — stays where its author put it; the contents beside it link to each section on GitHub.
SC Skill
Overview
Use this skill to produce repeatable screenshots for two modes:
testing: stable evidence screenshots for QA/regression workflows.marketing: polished, consistently framed screenshots for docs/site/release assets.
This skill is macOS-first and uses Peekaboo as primary automation with native screencapture fallback.
Quick Start
- Normalize window size and position:
skills/sc-skill/scripts/sc_window_preset.sh --app "AgentSessions" --preset marketing
- Capture one screenshot (auto-select tool):
skills/sc-skill/scripts/sc_capture.sh \
--app "AgentSessions" \
--mode marketing \
--delay 0.25 \
--max-edge auto \
--window-preset auto \
--output artifacts/screenshots/agent-sessions-main.png
- Run a manifest batch:
skills/sc-skill/scripts/sc_capture_suite.sh \
--manifest skills/sc-skill/references/examples/agent-sessions.tsv \
--outdir artifacts/screenshots
Workflow
- Choose mode:
testing: prioritize determinism and speed.marketing: prioritize composition consistency.
- Choose tool:
- Start with
--tool auto(defaults to Peekaboo when available and permitted). - Use
--tool nativewhen you need zero external dependency and simple window-region capture.
- Enforce layout before capture:
- Always run
sc_window_preset.shfirst. - Use consistent presets across runs to reduce visual drift.
- Capture and archive:
- Save to
artifacts/screenshots/.... - Sidecar metadata (
.json) is opt-in via--metadata; default runs keep artifacts cleaner. - Default output uses mode-based max edge (
--max-edge auto):testing=1800,marketing=2560, optimized/compressed for sharing/upload. - AgentSessions windows are normalized to a realistic working preset before capture (mode-based
testing/marketing) to avoid distorted/compressed UI composition. - Single capture closes the target app window by default (
--no-close-windowto keep it open). - Suite runs close captured app windows after all requested screenshots by default (
--no-close-after-suiteto keep them open). - For
AgentSessions, transcript readiness retry includes a built-in selection nudge (key down +0.5spause) to force transcript loading before capture. - Default transcript readiness remains fast-fail if loading still does not occur after nudge attempts.
- If transcript readiness times out, capture fails fast by default; pass
--allow-blank-transcriptonly when blank transcript output is acceptable.
What ships with it
7 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.
- 8d ago First seen · 80 lines · 55 tokens per session scan A 158a890ed7dc
sc-skill is a skill published in the GitHub repository jazzyalex/agent-sessions (846 stars, last pushed 3d ago), licensed MIT. It adds 55 tokens to every session and 769 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.
Other skills, from other repositories
do-it-verify
Use when selecting evidence for a delivery claim, regression fix, installation, or branch closeout.
hipson-hyperframes-video
Use for optional HyperFrames video composition workflows, website-to-video planning, product videos, launch videos, animated case studies, social shorts, and deterministic timeline QA.
vision-verifier
Use when verifying Computer Vision imports, fixtures, models, schemas, cameras, artifacts, cleanup, latency, and stated limitations with reproducible evidence.
algorithmic-art
Creating algorithmic art using p5.js with seeded randomness and interactive parameter exploration. Use this when users request creating art using code, generative art, algorithmic art, flow fields, or particle systems. Create original algorithmic art rather than copying existing artists' work to avoid copyright…
webapp-testing
Toolkit for interacting with and testing local web applications using Playwright. Supports verifying frontend functionality, debugging UI behavior, capturing browser screenshots, and viewing browser logs.
canvas-design
Create beautiful visual art in .png and .pdf documents using design philosophy. You should use this skill when the user asks to create a poster, piece of art, design, or other static piece. Create original visual designs, never copying existing artists' work to avoid copyright violations.