Borrowing it
Nothing to install: this file belongs to numa08/noaa-space-weather-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/numa08/noaa-space-weather-mcp/main/CLAUDE.mdgit clone --depth 1 https://github.com/numa08/noaa-space-weather-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/numa08/noaa-space-weather-mcp/claude-md)<a href="https://agentmods.dev/instructions/numa08/noaa-space-weather-mcp/claude-md"><img src="https://agentmods.dev/badge/instructions/numa08/noaa-space-weather-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/numa08/noaa-space-weather-mcp/claude-md"><img src="https://agentmods.dev/badge/instructions/numa08/noaa-space-weather-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 | $0.01259 | $0.01259 |
| Opus 5 | $0.00629 | $0.00629 |
| Sonnet 5 | $0.00252 | $0.00252 |
| Haiku 4.5 | $0.00126 | $0.00126 |
Grade A, and why
noaa-space-weather-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 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.
Makes network callslowCapability
Not a fault in itself. Listed so you know the mod talks to something, and to what.
curl http://localhost:3000/health How it starts
The opening of the file, as written. The whole thing — 151 lines — stays where its author put it; the contents beside it link to each section on GitHub.
NOAA Space Weather MCP Server
Project Overview
This is an MCP (Model Context Protocol) server that provides NOAA space weather data for amateur radio operators. The primary use case is analyzing solar activity to predict HF radio propagation conditions for DX (long-distance) communication.
Tech Stack
- Runtime: Bun 1.1+
- Language: TypeScript (strict mode)
- MCP SDK: @modelcontextprotocol/sdk
- Linting/Formatting: Biome
- Testing: Bun test
- Containerization: Docker
Project Structure
noaa-space-weather-mcp/
├── src/
│ ├── index.ts # Entry point (CLI parsing)
│ ├── server.ts # MCP server implementation
│ ├── noaa/
│ │ ├── client.ts # NOAA API client
│ │ └── types.ts # TypeScript types
│ ├── cache/
│ │ └── manager.ts # Cache management
│ ├── tools/
│ │ └── index.ts # MCP tool definitions
│ └── utils/
│ └── query.ts # Query utilities
├── tests/ # Unit tests
├── Dockerfile
├── docker-compose.yml
└── package.json
Key Commands
# Development
bun install # Install dependencies
bun run dev # Run with hot reload (STDIO)
bun run dev:http # Run HTTP server with hot reload
# Testing & Quality
bun run test # Run tests
bun run lint # Run Biome linter
bun run lint:fix # Auto-fix lint issues
bun run typecheck # TypeScript type checking
bun run check # All checks (typecheck + lint + test)
# Production
bun run start # Run STDIO server
bun run start:http # Run HTTP server
# Docker
bun run docker:build # Build Docker image
bun run docker:run # Run HTTP server in container
MCP Tools Available
- get_space_weather_summary - Quick overview of current conditions
- get_xray_flux - Solar flare (X-ray) data from GOES
- get_kp_index - Geomagnetic activity index
- get_solar_wind - Real-time solar wind parameters
- analyze_propagation - HF propagation analysis for ham radio
- get_cache_stats - Cache statistics
- clear_cache - Clear cached data
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.
- 10d ago First seen · 151 lines · 1,259 tokens per session scan A 665ab50163b7
noaa-space-weather-mcp CLAUDE.md is an instructions file published in the GitHub repository numa08/noaa-space-weather-mcp (0 stars, last pushed 8mo ago), licensed MIT. It adds 1,259 tokens to every session, about $0.0063 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 2026-08-31.
Other instructions, from other repositories
next.js AGENTS.md
AGENTS.md instructions for vercel/next.js, covering next.js development guide, codebase structure, monorepo overview, core package: packages/next and other important packages.
codex AGENTS.md
AGENTS.md instructions for openai/codex, covering rust/codex-rs, the codex-core crate, code review rules, crate api surface and model visible context.
vscode buildNext.instructions.md
Working notes and architecture documentation for the new esbuild-based build system in build/next. Use when making changes to the new build pipeline (transpile/bundle commands, NLS plugin, source-map handling, resource copying, or self-hosting watch tasks).
spec-kit AGENTS.md
AGENTS.md instructions for github/spec-kit, covering agents.md, about spec kit and specify, quickstart — add a new integration in 5 steps, integration architecture and integrationmanifest — file tracking.
langchain AGENTS.md
AGENTS.md instructions for langchain-ai/langchain, covering global development guidelines for the langchain monorepo, corridor security analysis, project architecture and context, monorepo structure and development tools & commands.
vscode oss-third-party-notices.instructions.md
Instructions for microsoft/vscode, covering vs code oss third-party-notices pipeline, architecture, pipeline flow in ci, applying the notice (cutover) and fallback chain (never fail the build).