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-structure/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-structure)<a href="https://agentmods.dev/skills/merlinhu1/truthmark/truthmark-structure"><img src="https://agentmods.dev/badge/skills/merlinhu1/truthmark/truthmark-structure/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-structure"><img src="https://agentmods.dev/badge/skills/merlinhu1/truthmark/truthmark-structure.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 | $0.00069 | $0.00272 |
| Opus 5.5 | $0.00028 | $0.00109 |
| Sonnet 5.5 | $0.00014 | $0.00054 |
| Haiku 4.5 | $0.00007 | $0.00027 |
Grade A, and why
truthmark-structure 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 Structure
Use this skill to design or repair Truthmark area structure.
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 current docs and relevant code directly.
- Define areas by product or behavior ownership, not by mechanical directory mirroring.
- Do not edit 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 · +11 tokens per session c8d6718afe3d
- 2mo ago First seen · 22 lines · 58 tokens per session scan A aa3ad9e597c2
truthmark-structure is a skill published in the GitHub repository merlinhu1/truthmark (91 stars, last pushed 1mo ago), licensed MIT. It adds 69 tokens to every session and 272 once invoked, about $0.0003 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
Review code changes, a plan, a live page (running dev server), or a local HTML file with Crit inline comments and structured human feedback. Use only when the user explicitly invokes /crit or directly asks to use Crit; a generic review request does not count.
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.
design-patterns
Detect, suggest, and evaluate GoF design patterns in TypeScript/JavaScript codebases. Use when refactoring code, applying singleton/factory/observer/strategy patterns, reviewing pattern quality, or finding stack-native alternatives for React, Angular, NestJS, and Vue.
eval-skills
Audit a project or library of skills for metadata, trigger boundaries, workflow completion criteria, local resource closure, instruction economy, tool scope, effort, and routing evidence. Use before shipping skills, after importing a skill collection, or when a skill triggers too often or not at all.
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.