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 bearded-illirian/trailmark --skill go-guidegit clone --depth 1 https://github.com/bearded-illirian/trailmarkWrote 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/bearded-illirian/trailmark/go-guide)<a href="https://agentmods.dev/skills/bearded-illirian/trailmark/go-guide"><img src="https://agentmods.dev/badge/skills/bearded-illirian/trailmark/go-guide/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/bearded-illirian/trailmark/go-guide"><img src="https://agentmods.dev/badge/skills/bearded-illirian/trailmark/go-guide.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 | $0.00163 | $0.01791 |
| Opus 5.5 | $0.00065 | $0.00716 |
| Sonnet 5.5 | $0.00033 | $0.00358 |
| Haiku 4.5 | $0.00016 | $0.00179 |
Grade A, and why
go-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 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.
How it starts
The opening of the file, as written. The whole thing — 250 lines — stays where its author put it; the contents beside it link to each section on GitHub.
/go-guide — Add a Conceptual Guide
Captures a durable concept — architectural decision, workflow rule, domain vocabulary — into the project's knowledge folder so future readers (including the same person in three months) can rediscover it without digging through commits.
Step 0 — Choose invocation mode
Three modes cover three lifecycles:
| Mode | Trigger | Behavior |
|---|---|---|
| interactive | User types /go-guide |
Full flow, asks project + topic + title + text |
| from-task | $go-guide with (mode='from-task', task_slug=…) |
ship-first hook after fast-track close; suggests title/text from task context, user edits |
| from-epic | $go-guide with (mode='from-epic', epic_slug=…) |
Epic closure hook; same as from-task but scoped to whole epic |
Step 1 — Select project
Read aihub/projects.yml. Show numbered menu of projects. Wait for user
choice or partial-name match.
Save to session context:
{project_id}= chosen project id (slug){project_path}= project's local path{knowledge_root}={project_path}/project-knowledge/guides/
If {project_path} doesn't have project-knowledge/ folder — create it:
mkdir -p "{project_path}/project-knowledge/guides/"
Step 2 — Select topic
A topic is a stable folder grouping guides by subject (e.g.
architecture, workflows, terminology, decisions). Ask the user
which topic; offer existing topics first:
ls "{knowledge_root}" 2>/dev/null
Show numbered menu + 0. New topic. If user picks new — ask for slug
(lowercase, hyphens). Create the folder:
mkdir -p "{knowledge_root}/{topic_slug}/"
Step 3 — Compose title
For interactive mode — ask user for one-line title.
For from-task / from-epic mode — propose a title derived from task/epic slug + brief. Show proposal, wait for user edit or approval.
Convert to filename slug:
"Why we chose SQLite over Postgres" → "why-sqlite-over-postgres.md"
What ships with it
2 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 86d12b230c25
- 1mo ago First seen · 250 lines · 163 tokens per session scan A 854d49834709
go-guide is a skill published in the GitHub repository bearded-illirian/trailmark (19 stars, last pushed 1mo ago), licensed MIT. It adds 163 tokens to every session and 1,791 once invoked, about $0.0007 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.
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