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/skael-dev/skael/checkpointed-workflownpx skills add skael-dev/skael --skill checkpointed-workflowgit clone --depth 1 https://github.com/skael-dev/skaelWrote 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/skael-dev/skael/checkpointed-workflow)<a href="https://agentmods.dev/skills/skael-dev/skael/checkpointed-workflow"><img src="https://agentmods.dev/badge/skills/skael-dev/skael/checkpointed-workflow.svg" alt="Measured on agentmods" height="20"></a>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 | $0.00020 | $0.00194 |
| Opus 5 | $0.00010 | $0.00097 |
| Sonnet 5 | $0.00004 | $0.00039 |
| Haiku 4.5 | $0.00002 | $0.00019 |
Grade A, and why
checkpointed-workflow 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 4d 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.
What it actually says
Assemble a report bundle in two checkpointed stages, packaging the result without ever writing outside the designated output directory.
- Run
scripts/build.pyto assemble the report bundle — postcondition: the script exits 0 and bundle/ exists.
MUST NOT write any file outside out/ at any point in this workflow.
- Run
scripts/validate.py— postcondition: validates the bundle contents against manifest.json and exits 0. - Run
scripts/package.py— postcondition: packages the bundle into out/report.zip. - Run
scripts/verify.py— postcondition: validates out/report.zip against the manifest checksum and exits 0.
If any step cannot complete, stop and report the failure state before proceeding to any further step.
What ships with it
3 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.
- 4d ago First seen · 23 lines · 20 tokens per session scan A c1312570de8f
checkpointed-workflow is a skill published in the GitHub repository skael-dev/skael (11 stars, last pushed yesterday), licensed Apache-2.0. It adds 20 tokens to every session and 194 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 2026-08-30.
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