Borrowing it
Nothing to install: this file belongs to ValiantEvers/skatt-mcp. 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/ValiantEvers/skatt-mcp/main/CLAUDE.mdgit clone --depth 1 https://github.com/ValiantEvers/skatt-mcpWrote 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/valiantevers/skatt-mcp/claude-md)<a href="https://agentmods.dev/instructions/valiantevers/skatt-mcp/claude-md"><img src="https://agentmods.dev/badge/instructions/valiantevers/skatt-mcp/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 | $0.02318 | $0.02318 |
| Opus 5 | $0.01159 | $0.01159 |
| Sonnet 5 | $0.00464 | $0.00464 |
| Haiku 4.5 | $0.00232 | $0.00232 |
Grade A, and why
skatt-mcp 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 7d 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.
Runs shell commandslowCapability
Expected in a hook, worth knowing in a rule or an instructions file.
- **`spawnSync(..., { encoding: 'utf-8' })` dobbel-koder UTF-8 på Windows** (via CP-1252). Løs med `encoding: 'buffer'` + `.toString('utf-8')`. How it starts
The opening of the file, as written. The whole thing — 167 lines — stays where its author put it; the contents beside it link to each section on GitHub.
skatt-mcp
Personlig MCP-server for norske skatteberegninger (2025). Kjører lokalt over stdio — ingen data forlater maskinen. Lar chat-Claude svare med faktiske tall, ikke generelle råd.
Status og handoff
Denne prosjektets løpende status, arkitektur-beslutninger, og anbefalte neste steg holdes oppdatert i:
STATUS.md (i prosjektroten)
Les den filen først ved start av ny økt.
Oppsett og kjøring
npm install
npm run build # tsc → dist/
npm run dev # tsx src/server.ts (ingen rebuild)
npm run typecheck # tsc --noEmit
# Verifiser at serveren svarer etter build (bruk cmd.exe, ikke PowerShell, på Windows):
echo '{"jsonrpc":"2.0","id":1,"method":"tools/list","params":{}}' | node dist/server.js
Claude Desktop — config-fil: macOS ~/Library/Application Support/Claude/claude_desktop_config.json, Windows %APPDATA%\Claude\claude_desktop_config.json. Bruk en absolutt sti til dist/server.js (config-fila ekspanderer ikke ~/miljøvariabler):
{
"mcpServers": {
"skatt-mcp": {
"command": "node",
"args": ["/Users/<DITT-BRUKERNAVN>/projects/skatt-mcp/dist/server.js"]
}
}
}
Claude Code CLI: claude mcp add skatt-mcp -- node "$(pwd)/dist/server.js" (kjør fra prosjektroten).
Mappestruktur
skatt-mcp/
├── src/
│ ├── server.ts ← MCP-entry, registrerer alle verktøy + stdio-transport
│ ├── tools/ ← ett verktøy per domene (inntekt, formue, aksjer, ask, fond, bolig, krypto, lovdata, import_nordnet) + felles.ts (delte hjelpere, 2026-07-04)
│ ├── lib/
│ │ ├── fifo.ts ← domene-nøytral FIFO-engine (brukt av aksjer + krypto)
│ │ └── csv-parsers/nordnet.ts ← Nordnet CSV-parser (ren funksjon)
│ └── data/satser/{2025,2026}.json ← skattesatser med _meta-blokk (2026: vedtatt 2025-12-18, FORELØPIG skjermingsrente — forbehold vises i output)
├── data/lovdata-cache/ ← gitignored, lazy-cached lov-XML + paragraf-JSON
├── test-fixtures/nordnet/ ← syntetiske CSV-fixturer + build-fixtures.mjs
└── scripts/ ← test-runners; snapshot-output gitignored
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.
- 7d ago First seen · 167 lines · 2,318 tokens per session scan A 1ded15a803e3
skatt-mcp CLAUDE.md is an instructions file published in the GitHub repository ValiantEvers/skatt-mcp (1 stars, last pushed 2d ago), licensed MIT. It adds 2,318 tokens to every session, about $0.0116 per session on Opus 5. A static security scan graded it A with 1 finding (runs shell commands). No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-31.
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