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/tomthebearded/guide-forge/modernize-guidenpx skills add tomthebearded/guide-forge --skill modernize-guidegit clone --depth 1 https://github.com/tomthebearded/guide-forgeWhat 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 | $0.00119 | $0.00456 |
| Opus 5 | $0.00060 | $0.00228 |
| Sonnet 5 | $0.00024 | $0.00091 |
| Haiku 4.5 | $0.00012 | $0.00046 |
Grade A, and why
modernize-guide scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 2d ago.
A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.
Nothing flagged
None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.
What it actually says
Skill: modernize-guide
The complete, canonical contract for this skill is the paste-prompt it wraps, inlined here — follow it in full:
!cat "${CLAUDE_SKILL_DIR}/prompt.md"
(If the block above came back empty or errored, read prompt.md in this skill folder — it sits beside this SKILL.md — and follow that.)
As you follow it, adapt for the fact that you're a Claude Code skill, not a pasted prompt:
- You're already invoked — skip its "How to use / paste this" preamble. The source doc to modernize is
$ARGUMENTSbelow (plus any attached source files and real target code). Read the source yourself where you can. - The deliverable is a plan + gap report — produce it inline as your reply and, once settled, write
the plan to
guide/PLAN.md(creating theguide/folder). That single file is the only thing you write now — do not write the finished guide (that's/scaffold-guidethen/draft-milestone). - Where the prompt hands off to another prompt by filename, use the sibling skill of the same name
(
/draft-milestone).
Source to modernize:
$ARGUMENTS
Gate: stop and ask the user to approve the plan before any milestone is drafted.
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.
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.
- 2d ago First seen · 38 lines · 119 tokens per session scan A 7c4c64f1d116
modernize-guide is a skill published in the GitHub repository tomthebearded/guide-forge (3 stars, last pushed 12d ago), licensed MIT. It adds 119 tokens to every session and 456 once invoked, about $0.0006 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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