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 majiayu000/spellbook --skill trip-plannergit clone --depth 1 https://github.com/majiayu000/spellbookWrote 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/majiayu000/spellbook/trip-planner)<a href="https://agentmods.dev/skills/majiayu000/spellbook/trip-planner"><img src="https://agentmods.dev/badge/skills/majiayu000/spellbook/trip-planner/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/majiayu000/spellbook/trip-planner"><img src="https://agentmods.dev/badge/skills/majiayu000/spellbook/trip-planner.svg" alt="Reviewed on agentmods" width="80" height="20"></a>- NVIDIA SkillSpector warn
SkillSpector: 1 finding, up to high
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 →
- high System Prompt Leakage · line 124 Skill contains instructions that could directly expose system prompts, internal rules, or hidden instructions to users or external parties.Fix: Remove any instructions that reveal, print, or output system prompts or internal rules. System instructions should never be exposed to end users.
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 | $0.00033 | $0.00741 |
| Opus 5 | $0.00016 | $0.00370 |
| Sonnet 5 | $0.00007 | $0.00148 |
| Haiku 4.5 | $0.00003 | $0.00074 |
Grade A, and why
trip-planner 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 — 144 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Trip Planner Skill
Create comprehensive travel itineraries with day-by-day schedules, activity planning, and practical logistics.
Context
You are helping plan trips with detailed, actionable itineraries that maximize experiences while maintaining realistic scheduling and proper preparation.
Itinerary Structure
Overview Section
# [Destination] Trip - [Dates]
## Overview
**Home Base:** [Location/Accommodation]
**Trip Focus:** [Primary activities/interests]
**Key Amenities:** [Gym, workspace, etc. if relevant]
Day-by-Day Format
## [Day], [Date] - [Theme/Focus]
### Morning
- **Wake:** [Time]
- [Activity with location/details]
- [Activity with timing]
### Afternoon
- [Activities with locations]
- [Timing and logistics]
### Evening
- [Dinner/social plans]
- [Location addresses]
### Prep Tonight
- [Critical tasks for next day]
- [Bookings needed]
- [Items to pack/prepare]
Content Elements
Activity Details
- Full addresses for navigation
- Operating hours when relevant
- Booking links for reservations
- Duration estimates
- Difficulty levels for physical activities
Logistics
- Wake-up times aligned with activities
- Travel times between locations
- Gas/fuel reminders for road trips
- Offline map download reminders
- Weather-appropriate gear notes
Practical Tips
- Local recommendations (coffee, food, bars)
- Critical prep items (reservations, downloads, packing)
- Legal/safety notes (reef-safe sunscreen, wildlife distances)
- Backup plans for weather-dependent activities
Quick Reference Section
## Essential Info
### Booked Activities
- [Activity]: [Date/Time]
- [Link/Confirmation]
- [Location/Notes]
### Must Download (Offline)
- [Maps/Apps needed]
- [Trail information]
- [Backup resources]
### Local Spots
- **Coffee:** [Name]: [Address] ([Hours])
- **Restaurants:** [Options with addresses]
- **Bars/Social:** [Options with addresses]
## Quick Reference
**Schedule Overview:**
- [Day]: [Key activity]
- [Day]: [Key activity]
**Critical Prep:**
- [Key preparation items]
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 · 144 lines · 33 tokens per session scan A 48ae7e4f3e7c
trip-planner is a skill published in the GitHub repository majiayu000/spellbook (278 stars, last pushed yesterday), licensed MIT. It adds 33 tokens to every session and 741 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 2026-09-03.
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