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 borski/travel-hacking-toolkit --skill hotel-chainsgit clone --depth 1 https://github.com/borski/travel-hacking-toolkitWrote 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/borski/travel-hacking-toolkit/hotel-chains)<a href="https://agentmods.dev/skills/borski/travel-hacking-toolkit/hotel-chains"><img src="https://agentmods.dev/badge/skills/borski/travel-hacking-toolkit/hotel-chains.svg" alt="Measured on agentmods" height="20"></a>- NVIDIA SkillSpector warn
SkillSpector: 1 finding, up to medium
These are SkillSpector’s own severities. On a checked sample its high-severity flags on skills were ~96% false positives — a documented command, a public API, a “never do X” rule — so we show them as a caution to read, not a verdict. Why →
- medium Excessive Agency · line 16 Skill enables autonomous high-impact decisions without human-in-the-loop verification. Critical operations (destructive commands, financial transactions, data deletion) should require explicit user confirmation.Fix: Add human-in-the-loop confirmation for destructive, irreversible, or high-impact operations. Never auto-execute commands that modify files, send data, or alter system state.
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 | $0.00042 | $0.00609 |
| Opus 5 | $0.00021 | $0.00304 |
| Sonnet 5 | $0.00008 | $0.00122 |
| Haiku 4.5 | $0.00004 | $0.00061 |
Grade A, and why
hotel-chains 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 8d 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 — 41 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Hotel Chain Recognition
Reference data: data/hotel-chains.json
Use the quick_lookup section in the data file to instantly identify which loyalty program a hotel belongs to when it appears in search results. When you see "Westin" you need to know that's Marriott Bonvoy. When you see "The Standard" you need to know that's Hyatt.
The Trigger Table
When results contain properties from ANY of these chains, IMMEDIATELY pull AwardWallet balances and check award rates. No judgment call. No asking. Just do it.
| Chain Family | Properties Include | Loyalty Program |
|---|---|---|
| IHG | Holiday Inn, InterContinental, Crowne Plaza, Kimpton, Staybridge, Candlewood | IHG One Rewards |
| Marriott | Marriott, Sheraton, Westin, W, Ritz-Carlton, St. Regis, Courtyard, Aloft | Marriott Bonvoy |
| Hilton | Hilton, DoubleTree, Hampton, Embassy Suites, Waldorf Astoria, Conrad, Curio | Hilton Honors |
| Hyatt | Hyatt, Grand Hyatt, Park Hyatt, Andaz, Thompson, Alila, Hyatt Place | World of Hyatt |
| Accor | Sofitel, Novotel, Pullman, Fairmont, Raffles, Swissôtel, ibis, Mercure | Accor Live Limitless |
| Radisson | Radisson, Radisson Blu, Park Inn, Country Inn | Radisson Rewards |
| Wyndham | Wyndham, Ramada, Days Inn, Super 8, La Quinta, Tryp | Wyndham Rewards |
| Best Western | Best Western, Best Western Plus, Best Western Premier, SureStay | Best Western Rewards |
Always Compare Points vs Cash for Hotels
- Hyatt points: 1.4cpp VFTW floor / 1.5cpp UP/OMAAT median / 1.7cpp TPG ceiling. Often a great redemption.
- Hilton at 0.4cpp floor (almost always better to pay cash).
- Marriott at 0.6-0.7cpp.
- IHG at 0.5cpp across all sources. Almost always better to pay cash.
Mention transfer opportunities. "Your Chase UR transfers 1:1 to Hyatt. That 25K/night Category 5 hotel is worth $375 in cash. That's 1.5cpp, between the 1.4 conservative floor and 1.7 ceiling. Decent but not exceptional."
Booking Windows for Hotels
Reference data/sweet-spots.json booking_windows section if a user wants to know how far in advance to book.
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.
- 8d ago First seen · 41 lines · 42 tokens per session scan A fbb50727336f
hotel-chains is a skill published in the GitHub repository borski/travel-hacking-toolkit (653 stars, last pushed 7d ago), licensed MIT. It adds 42 tokens to every session and 609 once invoked, about $0.0002 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 2026-08-30.
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Use when any test fails, bug appears, or behaviour surprises you, before proposing a fix - find the cause and prove it, by reading real evidence, tracing bad values back to their origin, comparing against a working case, and testing one hypothesis at a time.