What is marktplaats-mcp CLAUDE.md?

A project instruction file for Claude Code for marktplaats-mcp, an MCP server that lets AI assistants search and view Marktplaats.nl listings. MCP is a standard way for AI tools to connect to external services.

Use it when updating the README, adding affiliate disclosures, preparing configuration files, or working on the Marktplaats search server.

It keeps development aligned with the repository’s structure and current preparation for affiliate links, including required documentation and environment files.

How PonClick/marktplaats-mcp configures Claude Code

Reuse

Borrowing it

Nothing to install: this file belongs to PonClick/marktplaats-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.

Copy the file

curl -O https://raw.githubusercontent.com/PonClick/marktplaats-mcp/master/CLAUDE.md

Clone the repo

git clone --depth 1 https://github.com/PonClick/marktplaats-mcp

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/ponclick/marktplaats-mcp/claude-md.svg)](https://agentmods.dev/instructions/ponclick/marktplaats-mcp/claude-md)

Your own site

<a href="https://agentmods.dev/instructions/ponclick/marktplaats-mcp/claude-md"><img src="https://agentmods.dev/badge/instructions/ponclick/marktplaats-mcp/claude-md.svg" alt="Measured on agentmods" height="20"></a>

Per session 1,634 This file is loaded in full into every session.

When invoked 1,634 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	$0.01634	$0.01634
Opus 5	$0.00817	$0.00817
Sonnet 5	$0.00327	$0.00327
Haiku 4.5	$0.00163	$0.00163

Measured 8d ago against content hash bac09d920c0f, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-08, from the pricing page.

Security

Grade A, and why

marktplaats-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 8d 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.

from urllib.parse import quote

CLAUDE.md · 204 lines

How it starts

The opening of the file, as written. The whole thing — 204 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Claude Code Instructions - Marktplaats MCP Server

Project Overview

Dit is een gratis open-source MCP (Model Context Protocol) server voor Marktplaats.nl. De server stelt AI-assistenten in staat om advertenties te zoeken en bekijken op Marktplaats.

Repository: https://github.com/PonClick/marktplaats-mcp Eigenaar: lessClick AI (PonClick) Status: Open source - geen affiliate/monetisatie

Project Structure

marktplaats_mcp/
├── src/marktplaats_mcp/
│   ├── __init__.py
│   └── server.py          # Main MCP server code
├── pyproject.toml          # Package configuration
├── README.md               # User documentation
├── LICENSE                 # MIT License
├── DISCLAIMER.md           # Legal disclaimer (TO CREATE)
├── AFFILIATE_PLAN.md       # Monetization strategy
└── .env.example            # Environment template (TO CREATE)

Current Task: Affiliate Integration Preparation

We zijn bezig met het voorbereiden van affiliate marketing integratie via Awin. De Awin account is aangevraagd en we wachten op goedkeuring.

Wat nu gedaan moet worden:

README.md updaten
- Vervang jouw-username door PonClick
- Voeg affiliate disclosure toe onder "## Affiliate Disclosure"
- Voeg toe: "Links may contain affiliate tracking to support development"

DISCLAIMER.md aanmaken met inhoud:

# Disclaimer

## Unofficial Status
This tool is provided for educational and personal use purposes. This is an unofficial tool and is not affiliated with or endorsed by Marktplaats.nl or Adevinta.

## Affiliate Links
Links generated by this tool may contain affiliate tracking parameters. When you click on a Marktplaats link through this tool and make a purchase, the developer may earn a small commission at no extra cost to you.

You can disable affiliate tracking or use your own affiliate ID by setting the `AWIN_PUBLISHER_ID` environment variable.

## Liability
- Users are responsible for complying with Marktplaats terms of service
- The developer is not responsible for any misuse of this tool
- No guarantees are made about the accuracy or availability of listing data
- Use at your own risk

## Terms of Service Compliance
Users should:
- Respect rate limits and not overload Marktplaats servers
- Not use this tool for scraping or data harvesting at scale
- Comply with all applicable laws and regulations

---
*lessClick AI - 2026*

Read the full file on GitHub · 204 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.

8d ago First seen · 204 lines · 1,634 tokens per session scan A bac09d920c0f

Subscribe to this mod's changes

marktplaats-mcp CLAUDE.md is an instructions file published in the GitHub repository PonClick/marktplaats-mcp (16 stars, last pushed 6mo ago), licensed MIT. It adds 1,634 tokens to every session, about $0.0082 per session on Opus 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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marktplaats-mcp: Instructions file for Claude Code