Borrowing it
Nothing to install: this file belongs to merlinhu1/truthmark. Take a copy, put it at the same path in your own repository, and replace the rules that are about this project with yours.
curl -O https://raw.githubusercontent.com/merlinhu1/truthmark/main/.agents/skills/truthmark-document/SKILL.mdgit clone --depth 1 https://github.com/merlinhu1/truthmarkWrote 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/merlinhu1/truthmark/truthmark-document)<a href="https://agentmods.dev/skills/merlinhu1/truthmark/truthmark-document"><img src="https://agentmods.dev/badge/skills/merlinhu1/truthmark/truthmark-document/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/merlinhu1/truthmark/truthmark-document"><img src="https://agentmods.dev/badge/skills/merlinhu1/truthmark/truthmark-document.svg" alt="Reviewed on agentmods" width="80" 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 | $0.00059 | $0.00292 |
| Opus 5.5 | $0.00024 | $0.00117 |
| Sonnet 5.5 | $0.00012 | $0.00058 |
| Haiku 4.5 | $0.00006 | $0.00029 |
Grade A, and why
truthmark-document 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 1mo 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
Truthmark Document
Use this skill to document existing implemented behavior when no functional-code changes are required for the task.
Quick procedure:
- Inspect .truthmark/config.yml and configured route files (docs/truthmark/routes/areas.md; docs/truthmark/routes/areas/) only when they exist; then inspect existing canonical docs, implementation code, and tests directly.
- Document current implemented behavior; do not invent future behavior.
- May write canonical truth docs and truth routing files only; must not write functional code.
Reference files:
- Procedure: core review questions; read before edits or detailed auditing. See procedure.md.
- Report template: read before writing the final report. See report-template.md.
- Subagents and leases: read only when using subagents, leases, or accepting worker output. See subagents-and-leases.md.
What ships with it
4 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.
- 1mo ago Changed · -1 lines · +13 tokens per session 2e46d3852647
- 2mo ago First seen · 22 lines · 46 tokens per session scan A dfdecfed746f
truthmark-document is a skill published in the GitHub repository merlinhu1/truthmark (91 stars, last pushed 1mo ago), licensed MIT. It adds 59 tokens to every session and 292 once invoked, about $0.0002 per session on Opus 5.5. 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
amby-converge
Check the codebase against spec, plan, and tasks after implementing; append gap tasks, never edit code.
crit-story
Author a crit story and continue the interactive review loop only when the user explicitly invokes crit-story or directly asks you to generate a crit story. Do not infer this skill from generic review, PR, or diff-review requests.
ring:creating-handoffs
Creating a handoff document that captures session state (completed work, decisions, open items, next steps) and delivering it via Plan Mode so the user gets the native 'clear context and continue implementing' resume option. Use when ending a session, when context grows large, or the user says 'handoff', 'save…
audit-agents-skills
Audit Claude Code agents, skills, and commands for quality and production readiness. Use when evaluating skill quality, checking production readiness scores, or comparing agents against best-practice templates.
eval-rules
Audit Claude Code instruction rules in .claude/rules/ and /.claude/rules/: frontmatter, paths glob validity against real files, symlink load status, and day-to-day usefulness, then update rules with the user. Use for first-time rules setup, rules that apply too often or never, or periodic rules hygiene. Not for Codex…
review-pr
Perform a comprehensive code review of a pull request.