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trvl: Instructions file for Claude Code

CLAUDE.md

trvl CLAUDE.md is an instructions file for Claude Code from MikkoParkkola/trvl. It costs 3,327 tokens per session, scanned A, original, no licence file.

Project instructions for Claude Code describing the trvl travel tool, its product direction, current status, technical plans, and fixed decisions.

In plain words
What is it for?
Use them when developing or maintaining trvl so the agent understands its context and which decisions should not be revisited.
Why use it?
They give the coding agent background and boundaries when working on the trvl project.

Instructions file for Claude Code

Written for Claude Code: the file is CLAUDE.md.

This is MikkoParkkola/trvl's own configuration. It tells Claude Code how to work on trvl itself, so it is not a mod to install elsewhere. Copy it as a starting point and replace the rules that are about this project. Everything trvl configures →

not rated 93repo +1 changed 27d ago A scan 3,327 tokens custom licence
View source ↗ MikkoParkkola/trvl mikkoparkkola.github.io
Reuse

Borrowing it

Nothing to install: this file belongs to MikkoParkkola/trvl. Take a copy, put it at the same path in your own repository, and replace the rules that are about this project with yours.

Copy the file
curl -O https://raw.githubusercontent.com/MikkoParkkola/trvl/main/CLAUDE.md
Clone the repo
git clone --depth 1 https://github.com/MikkoParkkola/trvl

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.

agentmods badge for trvl CLAUDE.md

README.md
[![agentmods](https://agentmods.dev/badge/instructions/mikkoparkkola/trvl/claude-md/github.svg)](https://agentmods.dev/instructions/mikkoparkkola/trvl/claude-md)
Your own site
<a href="https://agentmods.dev/instructions/mikkoparkkola/trvl/claude-md"><img src="https://agentmods.dev/badge/instructions/mikkoparkkola/trvl/claude-md/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.

agentmods 80×15 button for trvl CLAUDE.md

Your own site · 80×15
<a href="https://agentmods.dev/instructions/mikkoparkkola/trvl/claude-md"><img src="https://agentmods.dev/badge/instructions/mikkoparkkola/trvl/claude-md.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 3,327 This file is loaded in full into every session.
When invoked 3,327 The same file — it is already loaded in full.
Security scan A 0 findings. A grade says what 26 rules found in the file — not that it is safe.
Origin unknown 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.

ModelPer sessionOnce invoked
Fable 5.1 $0.03327 $0.03327
Opus 5.5 $0.01331 $0.01331
Sonnet 5.5 $0.00665 $0.00665
Haiku 4.5 $0.00333 $0.00333

Measured 27d ago against content hash 29dc3301739d, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

trvl CLAUDE.md 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 27d 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.

CLAUDE.md · 192 lines

The source is not reproduced here

A licence we could not identify

The repository carries a LICENSE file, but it is custom or dual enough that GitHub cannot name it and neither can this catalogue. Unknown terms are not permission, so the body is not copied here. Read the licence at the source and decide for yourself.

Read it on GitHub

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.

  1. 27d ago Changed · -3 tokens per session 29dc3301739d
  2. 1mo ago Changed · +1 lines · +42 tokens per session 5a52c169d644
  3. 1mo ago Changed · +1 lines · +38 tokens per session 4a5513e03ed5
  4. 1mo ago Changed · +20 tokens per session 4caa943e4152
  5. 1mo ago Changed · +1 lines · +23 tokens per session 94624d06879a
  6. 1mo ago Changed · +95 tokens per session bfe94a3183cf
  7. 1mo ago Changed · +6 tokens per session ffc2039e9d2e
  8. 2mo ago Changed · +14 tokens per session 6725155b9068
  9. 2mo ago Changed be4e7144e9fd
  10. 2mo ago First seen · 189 lines · 3,092 tokens per session scan A 6f47f909caf2

Subscribe to this mod's changes

trvl CLAUDE.md is an instructions file published in the GitHub repository MikkoParkkola/trvl (93 stars, last pushed 4d ago), with no licence file. It adds 3,327 tokens to every session, about $0.0133 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 2026-08-30.

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