fedlex-connector: Instructions file for Claude Code

CLAUDE.md

fedlex-connector CLAUDE.md is an instructions file for Claude Code from JayTheSkier/fedlex-connector. It costs 362 tokens per session, scanned A, original, MIT.

Repository guidance for a server that lets Claude search Swiss federal laws from Fedlex, the Swiss government’s legislation website. It explains how the server finds law information and retrieves the full text and amendment history.

In plain words
What is it for?
Use it when working on law-title searches, article or law-text retrieval, amendment lists, Fedlex data access, or the server’s local and HTTP startup modes.
Why use it?
It gives the coding agent the project’s build commands, data sources, code rules, and server modes before it changes the code.

Instructions file for Claude Code

Written for Claude Code: the file is CLAUDE.md. Also seen: mentions Claude Code.

This is JayTheSkier/fedlex-connector's own configuration. It tells Claude Code how to work on fedlex-connector 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 fedlex-connector configures →

Reuse

Borrowing it

Nothing to install: this file belongs to JayTheSkier/fedlex-connector. 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/JayTheSkier/fedlex-connector/main/CLAUDE.md
Clone the repo
git clone --depth 1 https://github.com/JayTheSkier/fedlex-connector

Made for: Claude Code.

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Per session 362 This file is loaded in full into every session.
When invoked 362 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 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.

ModelPer sessionOnce invoked
Fable 5.1 $0.00362 $0.00362
Opus 5 $0.00181 $0.00181
Sonnet 5 $0.00072 $0.00072
Haiku 4.5 $0.00036 $0.00036

Measured 10d ago against content hash 450d39f023ae, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-10, from the pricing page.

Security

Grade A, and why

fedlex-connector 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 10d 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 · 34 lines

What it actually says

Fedlex Connector

MCP server that gives Claude access to Swiss federal legislation from fedlex.admin.ch.

Build & Run

  • npm run build — compile TypeScript (always run after editing src/)
  • npm start — run in stdio mode (local Claude Code / Claude Desktop)
  • npm run start:http — run in HTTP mode on port 3000 (remote deployment)
  • npm run dev — TypeScript watch mode

Architecture

Four tools (search_by_title, get_article, get_law_text, list_amendments) backed by two data sources:

  • SPARQL (src/sparql.ts) — queries Fedlex's SPARQL endpoint for metadata (RS numbers, consolidation URIs, amendment history)
  • Filestore (src/filestore.ts) — fetches and parses static HTML from Fedlex's filestore for actual law text

Entry point (src/index.ts) detects PORT env var: if set, runs Express HTTP server; otherwise stdio.

Code Conventions

  • ES modules ("type": "module" in package.json) — use .js extensions in imports
  • TypeScript strict mode — no any unless unavoidable
  • Shared types live in src/types.ts
  • SPARQL string literals must be escaped via escapeSparqlString() in sparql.ts
  • SPARQL has rate limiting (10 req/s), filestore has rate limiting (20 req/s) — don't bypass it

External Services

This server queries Swiss government infrastructure. Be respectful:

  • Don't increase rate limits
  • Don't add retry loops without backoff
  • Don't make requests in parallel that could spike load
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. 10d ago First seen · 34 lines · 362 tokens per session scan A 450d39f023ae

Subscribe to this mod's changes

fedlex-connector CLAUDE.md is an instructions file published in the GitHub repository JayTheSkier/fedlex-connector (6 stars, last pushed 11d ago), licensed MIT. It adds 362 tokens to every session, about $0.0018 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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