Borrowing it
Nothing to install: this file belongs to miguel-escribano/openair-3-mcp-server-oss. 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/miguel-escribano/openair-3-mcp-server-oss/main/CLAUDE.mdgit clone --depth 1 https://github.com/miguel-escribano/openair-3-mcp-server-ossWrote 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/miguel-escribano/openair-3-mcp-server-oss/claude-md)<a href="https://agentmods.dev/instructions/miguel-escribano/openair-3-mcp-server-oss/claude-md"><img src="https://agentmods.dev/badge/instructions/miguel-escribano/openair-3-mcp-server-oss/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/miguel-escribano/openair-3-mcp-server-oss/claude-md"><img src="https://agentmods.dev/badge/instructions/miguel-escribano/openair-3-mcp-server-oss/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 | $0.01237 | $0.01237 |
| Opus 5.5 | $0.00495 | $0.00495 |
| Sonnet 5.5 | $0.00247 | $0.00247 |
| Haiku 4.5 | $0.00124 | $0.00124 |
Grade A, and why
openair-3-mcp-server-oss 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 13d 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 — 110 lines — stays where its author put it; the contents beside it link to each section on GitHub.
openair-3-mcp — agent notes
MCP server (FastMCP 3.x) wrapping the R openair package. See README.md for full tool catalogue and setup.
References
- openair R package:
https://github.com/openair-project/openair - openair reference:
https://openair-project.github.io/openair/reference/index.html - openair book:
https://github.com/openair-project/book/ - FastMCP docs:
https://gofastmcp.com/llms.txt
Architecture
Tools are auto-discovered at startup from r/scripts/. Each .R file with a valid # MANIFEST: header becomes one MCP tool. No Python change needed to add a tool.
server.py → scans r/scripts/ → parses manifests → mcp.add_tool() per script.
Boundaries
- Generic openair MCP — CSV, public imports, SeriesV1 JSON. No vendor-specific integrations.
- Any MCP client connects via HTTP/SSE endpoint (+ optional token).
Input/output types
input_type in manifest |
Pydantic class | Use for |
|---|---|---|
series |
SeriesV1 |
All non-wind tools |
wind_series |
WindSeriesV1 |
Polar/directional tools |
traj_series |
TrajSeriesV1 |
Trajectory tools |
import_params |
ImportParamsV1 |
Import tools |
output_type |
Return value | Use for |
|---|---|---|
image |
ToolResult([summary text, Image]) → MCP [text, image] |
All plot tools |
stats |
dict (JSON) |
Stats/utility tools |
series |
dict (SeriesV1-shaped JSON) |
Import tools |
Built-in documentation tools
openair_docs()returns official documentation entry points:- package repo
- reference index
- openair book (repo + published site)
openair_function_help(function_name)returns canonical URLs for one function.prepare_series_for_openair(data, ...)prepares aligned deterministic timestamps/values before plotting. Data must come from load/upload/import tools orjson_exportsfrom another MCP — never client-built arrays.load_series_from_upload(content_base64, file_type, ...)parses CSV/xlsx uploaded as base64 (max 1 MB raw; seeINGEST_MAX_BYTESinopenair_mcp/utils.py).
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.
- 13d ago Changed · +7 lines · +214 tokens per session 5e3d1e3d01b5
- 1mo ago First seen · 103 lines · 1,023 tokens per session scan A 2705f4feb38c
openair-3-mcp-server-oss CLAUDE.md is an instructions file published in the GitHub repository miguel-escribano/openair-3-mcp-server-oss (0 stars, last pushed 15d ago), licensed MIT. It adds 1,237 tokens to every session, about $0.0049 per session on Opus 5.5. 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.
Other instructions, from other repositories
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).
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.
vscode oss-third-party-notices.instructions.md
Instructions for microsoft/vscode, covering vs code oss third-party-notices pipeline, architecture, pipeline flow in ci, cache eligibility and rollout and applying the notice (cutover).
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 copilot-instructions.md
Copilot instructions for microsoft/vscode, covering vs code copilot instructions, project overview, root folders, core architecture (src/ folder) and built-in extensions (extensions/ folder).
vscode model-prompts.instructions.md
Model-specific prompt authoring and registry guidelines.