Borrowing it
Nothing to install: this file belongs to orjahren/nettskjema-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/orjahren/nettskjema-mcp/main/CLAUDE.mdgit clone --depth 1 https://github.com/orjahren/nettskjema-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/orjahren/nettskjema-mcp/claude-md)<a href="https://agentmods.dev/instructions/orjahren/nettskjema-mcp/claude-md"><img src="https://agentmods.dev/badge/instructions/orjahren/nettskjema-mcp/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.
<a href="https://agentmods.dev/instructions/orjahren/nettskjema-mcp/claude-md"><img src="https://agentmods.dev/badge/instructions/orjahren/nettskjema-mcp/claude-md.svg" alt="Reviewed on agentmods" width="80" 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 | $0.00338 | $0.00338 |
| Opus 5 | $0.00169 | $0.00169 |
| Sonnet 5 | $0.00068 | $0.00068 |
| Haiku 4.5 | $0.00034 | $0.00034 |
Grade A, and why
nettskjema-mcp 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 11d 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.
What it actually says
Project Instructions for Claude
Project Overview
This is a Model Context Protocol (MCP) server for the Nettskjema API, built using FastMCP.
Development Guidelines
Code Style
- Use type hints for all function parameters and return values
- Use async/await for all API calls
- Keep tool functions focused and single-purpose
- Document all tools with clear docstrings
API Integration
- Base URL:
https://nettskjema.no/api/v3 - Auth URL:
https://authorization.nettskjema.no/oauth2/token - Authentication: OAuth 2.1 client credentials flow
- Requires
NETTSKJEMA_CLIENT_IDandNETTSKJEMA_CLIENT_SECRET - Tokens are JWTs valid for 24 hours (86,400 seconds)
- Tokens are cached in memory and auto-refreshed
- Requires
- All endpoints require authentication
- Use httpx for async HTTP requests
- Client username format:
<clientId>@apiclient
Adding New Tools
When adding new tools:
- Use the
@mcp.tool()decorator - Add clear docstring with Args description
- Use the
api_request()helper function - Handle errors appropriately
- Return string representations of results
Testing
- Ensure NETTSKJEMA_API_TOKEN is set before testing
- Use
example_usage.pyto test individual tools - Test with real Nettskjema forms when possible
Dependencies
- fastmcp: MCP server framework
- httpx: Async HTTP client
- Standard library: os, typing
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.
- 11d ago First seen · 42 lines · 338 tokens per session scan A 6c625cb0f41e
nettskjema-mcp CLAUDE.md is an instructions file published in the GitHub repository orjahren/nettskjema-mcp (0 stars, last pushed 6mo ago), licensed MIT. It adds 338 tokens to every session, about $0.0017 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 2026-08-31.
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