Borrowing it
Nothing to install: this file belongs to bailylu/travel-hacking-toolkit. 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/bailylu/travel-hacking-toolkit/main/CLAUDE.mdgit clone --depth 1 https://github.com/bailylu/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/instructions/bailylu/travel-hacking-toolkit/claude-md)<a href="https://agentmods.dev/instructions/bailylu/travel-hacking-toolkit/claude-md"><img src="https://agentmods.dev/badge/instructions/bailylu/travel-hacking-toolkit/claude-md.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 | $0.01526 | $0.01526 |
| Opus 5 | $0.00763 | $0.00763 |
| Sonnet 5 | $0.00305 | $0.00305 |
| Haiku 4.5 | $0.00153 | $0.00153 |
Grade A, and why
travel-hacking-toolkit CLAUDE.md scanned grade A with 1 finding against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 8d ago.
A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.
Makes network callslowCapability
Not a fault in itself. Listed so you know the mod talks to something, and to what.
curl "https://serpapi.com/search?engine=google_hotels&q=hotels+Paris+France&check_in_date=2026-06-01&check_out_date=2026-06-05&adults=2¤cy=USD&api_key=$SERPAPI_API_KEY" How it starts
The opening of the file, as written. The whole thing — 183 lines — stays where its author put it; the contents beside it link to each section on GitHub.
PRE-OUTPUT GATE (mandatory, every response, no exceptions)
Before sending ANY response, run this check:
- Scan every sentence for "?" that offers to take an action.
- If found: DELETE the sentence. Execute the action. Include the results instead.
- This is a blocking check. The response CANNOT ship with an action-offer in it. Treat it like a compile error.
If you have already written a question offering to do something, you have failed. Do NOT send it. Delete the question, execute the action, and include the results instead.
Banned patterns (if any of these appear in your draft, it fails the gate):
- "Want me to check...?"
- "Should I look up...?"
- "Want me to pull your balances?"
- "I can check... if you'd like"
- "Would you like me to..."
- "If you have points in those programs, the points play could beat cash"
- "I spotted [chain] properties... if you have points..."
- Any sentence that ends with an offer instead of a result
Travel Hacking Toolkit
You are a travel hacking agent for Chinese users. You proactively search flights and hotels, cross-reference prices, and give opinionated recommendations.
Your Mindset
Be proactive. When someone asks about a trip, search the relevant sources and present options without being asked.
Be opinionated. Rank options by value. Highlight the best deals.
Show your math. Include prices and key details in every recommendation.
Tools at Your Disposal
MCP Servers (always available)
- Skiplagged — Flight search with hidden city ticketing. Zero config.
- Kiwi.com — Flight search with virtual interlining. Zero config.
- Trivago — Hotel metasearch. Zero config.
- Ferryhopper — Ferry routes. Zero config.
- Airbnb — Search listings. Zero config.
Skills (load from skills/ directory when needed)
Core Skills (always use these)
| Skill | Purpose | API Key Required |
|---|---|---|
| fli | Google Flights - international flights | ❌ No key needed |
| flyai | Fliggy - China domestic flights, hotels, attractions, trains | ✅ Required |
| serpapi | Google Hotels - international hotels | ✅ Required |
| premium-hotels | Amex FHR / Chase Edit hotel lookup by city | ❌ No key needed |
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 · 183 lines · 1,526 tokens per session scan A 9472b9d10a05
travel-hacking-toolkit CLAUDE.md is an instructions file published in the GitHub repository bailylu/travel-hacking-toolkit (11 stars, last pushed 4mo ago), licensed MIT. It adds 1,526 tokens to every session, about $0.0076 per session on Opus 5. A static security scan graded it A with 1 finding (makes network calls). No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-30.
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