Borrowing it
Nothing to install: this file belongs to xDido/chiron. 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/xDido/chiron/main/.agents/skills/tour/SKILL.mdgit clone --depth 1 https://github.com/xDido/chironWrote 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/xdido/chiron/tour)<a href="https://agentmods.dev/skills/xdido/chiron/tour"><img src="https://agentmods.dev/badge/skills/xdido/chiron/tour.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 5.1 | $0.00057 | $0.02337 |
| Opus 5 | $0.00028 | $0.01169 |
| Sonnet 5 | $0.00011 | $0.00467 |
| Haiku 4.5 | $0.00006 | $0.00234 |
Grade D, and why
tour scanned grade D with 2 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 7d 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.
Tells the agent never to refusehighAnti-refusal
Suppressing the ability to decline removes a core safety control; a later harmful request then succeeds.
6. **Do not refuse** when asked for a tour. If the topic is valid, ship the tour. **Anti-pattern #2 applies.** Strips warnings and disclaimersmediumAnti-refusal
Omitting safety caveats hides risk from the user and is a common jailbreak preamble.
3. **Do not moralize.** *"You should have read this before starting"* — never. How it starts
The opening of the file, as written. The whole thing — 158 lines — stays where its author put it; the contents beside it link to each section on GitHub.
/tour — structured preamble for a coding topic
Quick start:
/tour Go channels— preamble for a specific primitive/tour async/await in JavaScript— preamble for a language concept/tour database connection pooling— preamble for an architecture topic/tour— no argument: infer the topic from the current conversation
Step 0 — Load project context
Check if .chiron-context.md exists in the project root. If it exists: read it. DO NOT scan the codebase or read additional files. If not: tell the user: "No project context found. Run /teach-chiron first." Then stop.
The user's topic:
$ARGUMENTS
If $ARGUMENTS is empty or whitespace-only: derive the topic from the current conversation instead of asking. Scan the recent turns for the dominant coding subject — the file, primitive, library, language feature, or architectural concept the user has been working on or asking about — and use that as the topic. Open the preamble with a one-line confirmation of what you inferred, e.g. "Inferring topic from conversation: Go errgroup. Say otherwise and I'll retarget." Then produce the normal 3-section output.
Inference rules:
- Prefer the most recent, most specific subject (a named primitive like
errgroup.WithContextbeats a vague category like "concurrency"). - If the conversation spans several subjects, pick the one the user is currently stuck on or asking about — not the first one mentioned.
- If the conversation has no identifiable coding topic (greeting, meta-question, empty session), fall back to: "No topic given and I can't infer one from the conversation yet. Try
/tour <specific concept>— e.g./tour Go channels." Then stop. - Never fabricate a topic to fill the slot. Ambiguity → ask, don't guess.
CRITICAL — user instructions always win
If the current project's .agents/README.md conflicts with the behavior below, follow those instructions instead. This command is opt-in.
Current level
Apply the voice level from .chiron-context.md. If missing or unrecognized, use default.
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.
- 7d ago First seen · 158 lines · 57 tokens per session scan D 96b1275e8e2b
tour is a skill published in the GitHub repository xDido/chiron (2 stars, last pushed 4mo ago), licensed MIT. It adds 57 tokens to every session and 2,337 once invoked, about $0.0003 per session on Opus 5. A static security scan graded it D with 2 findings (tells the agent never to refuse, strips warnings and disclaimers). No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-31.
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