Borrowing it
Nothing to install: this file belongs to nestordemeure/impresso-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/nestordemeure/impresso-mcp/main/CLAUDE.mdgit clone --depth 1 https://github.com/nestordemeure/impresso-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/nestordemeure/impresso-mcp/claude-md)<a href="https://agentmods.dev/instructions/nestordemeure/impresso-mcp/claude-md"><img src="https://agentmods.dev/badge/instructions/nestordemeure/impresso-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/nestordemeure/impresso-mcp/claude-md"><img src="https://agentmods.dev/badge/instructions/nestordemeure/impresso-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 | $0.02811 | $0.02811 |
| Opus 5 | $0.01406 | $0.01406 |
| Sonnet 5 | $0.00562 | $0.00562 |
| Haiku 4.5 | $0.00281 | $0.00281 |
Grade A, and why
impresso-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.
How it starts
The opening of the file, as written. The whole thing — 138 lines — stays where its author put it; the contents beside it link to each section on GitHub.
impresso MCP Server
A CLI and an MCP server for impresso, the research corpus of the digitised press of Switzerland and Luxembourg. It needs a free account, it resolves to an article, and the search response holds the keyword in context.
Stack
- Python ≥3.12, uv, fastMCP ≥2.0.0, httpx ≥0.27.0, python-dotenv ≥1.0.0
Functions
- A full-text search at article level, with the extracts in the search response
- A structured boolean query, through
--or,--andand--not - A control of the precision:
exact,fuzzy,soft,partial - Filters for the year range, the publication, the language, the country, the item type, the front page, the headline, the named-entity mentions, the entities, the topics and the partners
- A regular expression filter against the terms in the index
- A facet listing over 16 fields, so that you can give a full-string filter value exactly
- A source listing with the dates that impresso holds for each publication
- A transcript download for each article
- Pagination at up to 1000 results for each request, with no limit on the depth
Structure
impresso-mcp/
├── .claude/skills/impresso-search/ # Skill documenting the CLI
├── src/impresso_mcp/
│ ├── __init__.py
│ ├── auth.py # Token minting, caching and renewal
│ ├── client.py # API client + caching
│ ├── cli.py # `impresso` command-line interface
│ ├── paths.py # Cache and credential locations
│ ├── ratelimit.py # Cross-process request pacing
│ ├── server.py # FastMCP tools
│ └── install.py # MCP server installer
├── pyproject.toml
└── CLAUDE.md # This file
client.py holds all the behaviour. server.py and cli.py are thin presentation layers over it, so the search semantics and the cache stay identical for each method of access. The CLI shows each filter without a condition. The MCP server hides them behind --enable-advanced-search.
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 · 138 lines · 2,811 tokens per session scan A b82ba716c15b
impresso-mcp CLAUDE.md is an instructions file published in the GitHub repository nestordemeure/impresso-mcp (0 stars, last pushed 1mo ago), licensed Apache-2.0. It adds 2,811 tokens to every session, about $0.0141 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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