A read-only flight-search skill that turns a natural-language trip request into a ranked comparison of United flights, prices, miles, dates, and routes. It uses Google Flights for market context and United's website for bookable United options.

Use it to search United itineraries, compare money with miles, apply travel preferences, and produce links to shortlisted flights.

It reduces the effort of comparing cash fares, award fares, flexible dates, and routing choices without booking a flight.

flights — Skill for Claude Code by bendrucker/claude

Install

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.

Any agent

npx skills add bendrucker/claude --skill flights

Clone the repo

git clone --depth 1 https://github.com/bendrucker/claude

Made for: Claude Code.

Wrote 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.

README.md

[![agentmods](https://agentmods.dev/badge/skills/bendrucker/claude/flights/github.svg)](https://agentmods.dev/skills/bendrucker/claude/flights)

Your own site

<a href="https://agentmods.dev/skills/bendrucker/claude/flights"><img src="https://agentmods.dev/badge/skills/bendrucker/claude/flights/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.

Your own site · 80×15

<a href="https://agentmods.dev/skills/bendrucker/claude/flights"><img src="https://agentmods.dev/badge/skills/bendrucker/claude/flights.svg" alt="Reviewed on agentmods" width="80" height="20"></a>

Per session 61 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.

When invoked 1,766 The whole file, excluding the scripts and references it only reads on demand.

Security scan A 0 findings. A grade says what 26 rules found in the file — not that it is safe. Third-party audits

NVIDIA SkillSpector warn 7 Sept 2026

SkillSpector: 2 findings, 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 Rogue Agent · line 19
Skill establishes unauthorized persistence across sessions via cron jobs, startup scripts, or state files. Session persistence allows an attacker to maintain access beyond the current interaction.

Fix: Remove any persistence mechanisms (cron jobs, startup scripts, state files). Skills should not maintain state across sessions without explicit user consent.
medium Rogue Agent · line 26
Skill establishes unauthorized persistence across sessions via cron jobs, startup scripts, or state files. Session persistence allows an attacker to maintain access beyond the current interaction.

Fix: Remove any persistence mechanisms (cron jobs, startup scripts, state files). Skills should not maintain state across sessions without explicit user consent.

How audits are shown

Origin original No closer match found in the catalogue.

Token cost

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	$0.00061	$0.01766
Opus 5.5	$0.00024	$0.00706
Sonnet 5.5	$0.00012	$0.00353
Haiku 4.5	$0.00006	$0.00177

Measured 1mo ago against content hash 0f17bd9f5360, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

flights 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.

The scan reads SKILL.md. This mod also ships 8 executable files (scripts/booking.test.ts, scripts/booking.ts, scripts/google-flights.test.ts, …), listed below but not scanned — reading those needs a real analyzer, not pattern matching.

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.

user/skills/flights/SKILL.md · 133 lines

How it starts

The opening of the file, as written. The whole thing — 133 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Flights

Preferences: !cat ~/.config/claude-flights/config.json 2>/dev/null || echo '{}'

If that came back {}, the config is missing. Run the search on what the request states, then offer to write a starter config at the end. Its shape:

{
  "home": { "primary": "LAX", "metro": ["LAX", "BUR", "LGB"] },
  "loyalty": { "carrier": "UA", "program": "MileagePlus", "status": "none" },
  "miles": { "centsPerPointThreshold": 1.5 },
  "filters": {
    "hard": ["no Basic Economy", "no red-eyes", "no 2+ stop itineraries"],
    "soft": ["prefer nonstop", "avoid arrivals after midnight"]
  },
  "cabin": { "default": "economy" },
  "preferences": [
    "Aircraft type matters. Say which one every row is.",
    "Take Economy Plus when the fare gap is under $40.",
    "Show a few real options, not one pick."
  ]
}

preferences is prose, read and applied per search rather than scored. Every key is optional, and any object may carry a note string for context that does not fit the field.

cabin.default names a search cabin, one of economy, premium, business, or first, and passes straight to --cabin. Economy Plus is a United seat product rather than a search cabin, so a preference for it belongs in preferences and gets read off the results.

The parsers live in ~/.claude/skills/flights/scripts/. Invoke them by that path. The session's working directory is wherever the request came from.

Boundaries

These do not bend because a page makes the next step convenient.

Read as far as fare selection and view-only seat maps. Stop there.
Never enter passenger or payment details. Never click Purchase, Confirm, Hold, or FareLock. Never spend miles or money.
On united.com the seat fee sits behind the Traveler Info step. That step is past the boundary. Report the fee as unavailable rather than crossing it.
Never type a password. Open headed and hand over the keyboard.
Report a bot challenge and stop. Do not work around one.
Report the award price shown. Never read or assume an account balance.

Read the full file on GitHub · 133 lines

Files

What ships with it

12 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.

Changes

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 First seen · 133 lines · 61 tokens per session scan A 0f17bd9f5360

Subscribe to this mod's changes

flights is a skill published in the GitHub repository bendrucker/claude (18 stars, last pushed today), licensed MIT. It adds 61 tokens to every session and 1,766 once invoked, about $0.0002 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 2026-09-03.

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