What is flight-finder CLAUDE.md?

Project guidance for Flight Finder, a service that tracks how airline prices change and displays the history in searchable, shareable charts. Its monorepo keeps multiple related projects in one repository, including a web app and command-line tool.

Use it when developing or testing the web app, command-line tool, flight scraper, price charts, database access, AI integrations, or desktop release workflow.

It explains the boundaries between the workspaces, desktop launcher, scraper, database, cache, and deployment setup.

How affromero/flight-finder configures Claude Code

Reuse

Borrowing it

Nothing to install: this file belongs to affromero/flight-finder. 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/affromero/flight-finder/main/CLAUDE.md

Clone the repo

git clone --depth 1 https://github.com/affromero/flight-finder

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/instructions/affromero/flight-finder/claude-md/github.svg)](https://agentmods.dev/instructions/affromero/flight-finder/claude-md)

Your own site

<a href="https://agentmods.dev/instructions/affromero/flight-finder/claude-md"><img src="https://agentmods.dev/badge/instructions/affromero/flight-finder/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.

Your own site · 80×15

<a href="https://agentmods.dev/instructions/affromero/flight-finder/claude-md"><img src="https://agentmods.dev/badge/instructions/affromero/flight-finder/claude-md.svg" alt="Reviewed on agentmods" width="80" height="20"></a>

Per session 3,870 This file is loaded in full into every session.

When invoked 3,870 The same file — it is already loaded in full.

Security scan A 1 finding. A grade says what 26 rules found in the file — not that it is safe.

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	$0.03870	$0.03870
Opus 5.5	$0.01548	$0.01548
Sonnet 5.5	$0.00774	$0.00774
Haiku 4.5	$0.00387	$0.00387

Measured 1mo ago against content hash 743617588845, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

flight-finder 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 1mo 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.

shims `docker`/`podman`/`*compose`/`curl` and asserts the recorded

CLAUDE.md · 221 lines

How it starts

The opening of the file, as written. The whole thing — 221 lines — stays where its author put it; the contents beside it link to each section on GitHub.

CLAUDE.md — Flight Finder

Flight Finder — The price trail airlines don't show you. Flight price evolution tracker with natural language search and shareable charts.

Tech Stack

Layer	Technology
Frontend	Next.js 15+ (App Router), TypeScript, CSS Modules
Database	PostgreSQL 16 + Prisma ORM
Cache	Redis 7 (rate limiting + response caching)
AI	Anthropic Claude, OpenAI GPT, Google Gemini, Claude Code CLI, Ollama, llama.cpp, vLLM
Browser	Playwright (headless Chromium for Google Flights scraping)
Charts	Plotly.js (interactive price evolution)
Hosting	Hetzner VPS (Docker Compose + Caddy) — flight-finder.org
CI/CD	GitHub Actions (CI + Deploy on push to main)

Monorepo

npm workspaces: @flight-finder/web (apps/web/), @flight-finder/cli (packages/cli/). Root package.json proxies common scripts to @flight-finder/web. apps/desktop/ is a Tauri (Rust) launcher: deliberately NOT an npm workspace member and excluded from npm run ci. .github/workflows/desktop-ci.yml tests it on macOS, Linux, and Windows; .github/workflows/desktop-release.yml builds the installers after the required checks pass.

The CLI bundles the shared scraper (apps/web/src/lib/scraper/*) via relative imports but maps @/* to its own packages/cli/src/, so any new @/lib/<x> import added to a shared scraper file needs a matching shim in packages/cli/src/lib/ (re-export the real module like secret-crypto.ts/prisma.ts, or a stub like admin-recovery.ts). Web-only checks pass without it; only the full npm run ci (web + cli) catches a missing shim.

Versioning (locked): apps/web, the root package.json, packages/cli, and apps/desktop all carry the SAME version number. apps/web/package.json is the source of truth; git tags vX.Y.Z track the web release and desktop-vX.Y.Z tags the desktop build at the same number (distinct prefixes, no collision). /create-release must bump all of them to the new version — apps/web/package.json, root package.json, packages/cli/package.json, and apps/desktop (its package.json, src-tauri/Cargo.toml, and src-tauri/tauri.conf.json) — and regenerate both lockfiles (package-lock.json and apps/desktop/src-tauri/Cargo.lock).

Read the full file on GitHub · 221 lines

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 Changed · -1 lines · -25 tokens per session 743617588845
1mo ago Changed · -3 lines · -283 tokens per session 55ce464a2572
1mo ago Changed · +25 tokens per session 3b42eb18bda9
1mo ago Changed · -20 tokens per session d77d4ecbf3d1
1mo ago Changed · -3 tokens per session a00202653bb8
2mo ago First seen · 225 lines · 4,176 tokens per session scan A 7a91fe06f4cf

Subscribe to this mod's changes

flight-finder CLAUDE.md is an instructions file published in the GitHub repository affromero/flight-finder (183 stars, last pushed yesterday), licensed MIT. It adds 3,870 tokens to every session, about $0.0155 per session on Opus 5.5. 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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flight-finder CLAUDE.md next to 6 instructions from other repositories
Mod	Type	Stars	Last push	Licence	Scan	Tokens	Works with
flight-finder CLAUDE.mdaffromero/flight-finder	Instructions file	183	yesterday	MIT	A	3,870	Claude Code
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vscode oss-third-party-notices.instructions.mdmicrosoft/vscode	Instructions file	195k	yesterday	MIT	A	5,516	GitHub Copilot
vscode copilot-instructions.mdmicrosoft/vscode	Instructions file	195k	yesterday	MIT	A	3,093	GitHub Copilot
deepseek-harness AGENTS.mddeepseek-ai/deepseek-harness	Instructions file	274k	2d ago	MIT	A	4,313	Codex, OpenCode

flight-finder: Instructions file for Claude Code