RDW-MCP: Instructions file for GitHub Copilot

.github/copilot-instructions.md

RDW-MCP copilot-instructions.md is an instructions file for GitHub Copilot from jodur/RDW-MCP. It costs 312 tokens per session, scanned C, original, MIT.

Project guidance for building an MCP server that reads Dutch vehicle-registration data from the RDW open-data API. It covers TypeScript, input validation, error handling, code structure, and documentation.

In plain words
What is it for?
Use it when adding or maintaining features such as licence-plate lookups, vehicle details, technical specifications, emissions data, or MOT inspection data.
Why use it?
It gives contributors shared rules and reference information, reducing inconsistent code and repeated decisions while working on the server.

Instructions file for GitHub Copilot

Written for GitHub Copilot: a Copilot instructions file.

This is jodur/RDW-MCP's own configuration. It tells GitHub Copilot how to work on RDW-MCP 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 RDW-MCP configures →

Reuse

Borrowing it

Nothing to install: this file belongs to jodur/RDW-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/jodur/RDW-MCP/main/.github/copilot-instructions.md
Clone the repo
git clone --depth 1 https://github.com/jodur/RDW-MCP

Made for: GitHub Copilot.

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.

agentmods badge for RDW-MCP copilot-instructions.md

README.md
[![agentmods](https://agentmods.dev/badge/instructions/jodur/rdw-mcp/copilot-instructions/github.svg)](https://agentmods.dev/instructions/jodur/rdw-mcp/copilot-instructions)
Your own site
<a href="https://agentmods.dev/instructions/jodur/rdw-mcp/copilot-instructions"><img src="https://agentmods.dev/badge/instructions/jodur/rdw-mcp/copilot-instructions/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.

agentmods 80×15 button for RDW-MCP copilot-instructions.md

Your own site · 80×15
<a href="https://agentmods.dev/instructions/jodur/rdw-mcp/copilot-instructions"><img src="https://agentmods.dev/badge/instructions/jodur/rdw-mcp/copilot-instructions.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 312 This file is loaded in full into every session.
When invoked 312 The same file — it is already loaded in full.
Security scan C 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.

ModelPer sessionOnce invoked
Fable 5.1 $0.00312 $0.00312
Opus 5.5 $0.00125 $0.00125
Sonnet 5.5 $0.00062 $0.00062
Haiku 4.5 $0.00031 $0.00031

Measured 2mo ago against content hash a7ebe4b0fae8, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade C, and why

RDW-MCP copilot-instructions.md scanned grade C 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 2mo 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.

Hidden instructionshighPrompt injection

Directives inside HTML comments, invisible characters or bidirectional overrides are read by the model and not by the person reviewing the file.

<!-- Use this file to provide workspace-specific custom instructions to Copilot. For more details, visit https://code.visualstudio.com/docs/copilot/copilot-customization#_use-a-githubcopilotinstructionsmd-file -->
.github/copilot-instructions.md · 38 lines

What it actually says

Copilot Instructions

This is an MCP (Model Context Protocol) server project for Dutch RDW vehicle registration data.

Project Guidelines

  • This server provides tools to query Dutch vehicle registration database using RDW open data API
  • Use TypeScript with strict typing throughout the project
  • Follow MCP SDK patterns and best practices
  • Implement proper error handling for API calls
  • Use Zod for input validation and schema definitions
  • Structure the code with proper separation of concerns
  • Add comprehensive JSDoc comments for all functions and types

Key Features

  • License plate lookup functionality
  • Vehicle information retrieval (brand, model, fuel type, etc.)
  • Technical specifications access
  • Emissions and environmental data
  • APK (MOT) inspection data
  • Filtering and search capabilities

API Information

The server integrates with RDW (Rijksdienst voor het Wegverkeer) open data APIs:

References

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. 2mo ago First seen · 38 lines · 312 tokens per session scan C a7ebe4b0fae8

Subscribe to this mod's changes

RDW-MCP copilot-instructions.md is an instructions file published in the GitHub repository jodur/RDW-MCP (1 stars, last pushed 2mo ago), licensed MIT. It adds 312 tokens to every session, about $0.0012 per session on Opus 5.5. A static security scan graded it C with 1 finding (hidden instructions). No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-31.

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