noaa-climate-mcp-server: Instructions file for Codex

AGENTS.md

noaa-climate-mcp-server AGENTS.md is an instructions file for Codex, OpenCode from cyanheads/noaa-climate-mcp-server. It costs 6,967 tokens per session, scanned A, a copy of obsidian-mcp-server AGENTS.md, Apache-2.0.

A project instruction guide for an MCP server that accesses NOAA historical weather and climate data. It documents the server’s tools, data sources, development rules, and required software versions.

In plain words
What is it for?
Use it when changing or reviewing the NOAA Climate Data Online integration, Storm Events data, disaster records, or the server’s TypeScript and MCP code.
Why use it?
It gives a coding agent the project-specific rules and domain background needed to work on this server without guessing. NOAA is the US weather agency, and MCP is a standard way for an agent to call external tools and data.

Instructions file for CodexOpenCode

Written for Codex and OpenCode: the file is AGENTS.md. Also seen: reads .claude/ paths; mentions .claude-plugin; mentions CLAUDE.md.

This is cyanheads/noaa-climate-mcp-server's own configuration. It tells Codex and OpenCode how to work on noaa-climate-mcp-server 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 noaa-climate-mcp-server configures →

Reuse

Borrowing it

Nothing to install: this file belongs to cyanheads/noaa-climate-mcp-server. 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/cyanheads/noaa-climate-mcp-server/main/AGENTS.md
Clone the repo
git clone --depth 1 https://github.com/cyanheads/noaa-climate-mcp-server

Made for: Codex, OpenCode.

Wrote this? Show the measurements

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README.md
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Per session 6,967 This file is loaded in full into every session.
When invoked 6,967 The same file — it is already loaded in full.
Security scan A 0 findings. A grade says what 26 rules found in the file — not that it is safe.
Origin 78% copy Near-identical to another mod 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 $0.06967 $0.06967
Opus 5.5 $0.02787 $0.02787
Sonnet 5.5 $0.01393 $0.01393
Haiku 4.5 $0.00697 $0.00697

Measured yesterday against content hash 7b691bb69870, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

noaa-climate-mcp-server AGENTS.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 yesterday.

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.

Origin

This is a copy

78% identical to obsidian-mcp-server AGENTS.md — 350 lines differ, which has more behind it and is treated as the original. This page carries a canonical link to it rather than competing with it.

AGENTS.md · 347 lines

How it starts

The opening of the file, as written. The whole thing — 347 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Developer Protocol

Server: noaa-climate-mcp-server Version: 0.7.1 Framework: @cyanheads/mcp-ts-core ^0.13.15 Engines: Bun ≥1.4.0, Node ≥24.0.0 MCP SDK: @modelcontextprotocol/server ^2.3.1 Zod: ^4.6.7

Read the framework docs first: node_modules/@cyanheads/mcp-ts-core/CLAUDE.md contains the full API reference — builders, Context, error codes, exports, patterns. This file covers server-specific conventions only.


Domain

NOAA Climate Data Online (CDO) API v2 — historical weather data — plus two separate NCEI bulk-CSV corpora: the Storm Events Database and Billion-Dollar Weather and Climate Disasters. 10 tools, 2 resources:

  • noaa_climate_list_datasets — list available CDO datasets
  • noaa_climate_list_data_categories — list measurement category groups
  • noaa_climate_list_data_types — list measurement labels by dataset or category
  • noaa_climate_list_location_categories — list the location categories that scope location search
  • noaa_climate_find_locations — search geographic locations by category, with an optional client-side name filter
  • noaa_climate_find_stations — search weather stations by location, bounding box, dataset
  • noaa_climate_get_station — fetch full metadata for a single station
  • noaa_climate_fetch_data — fetch historical observations with date range validation and unit selection
  • noaa_climate_search_storm_events — search NCEI Storm Events for one year (severe-weather events, damage, casualties, narratives)
  • noaa_climate_get_billion_dollar_disasters — query NCEI’s retired 1980–2024 Billion-Dollar Weather and Climate Disasters archive, per disaster or per year. Every successful response carries a retirement notice composed with paging guidance. CPI adjustments stay as archived, without current-price rebasing or an inferred base year; coveredYears stays row-derived. State shape is advertised as ^\s*[A-Za-z]{2}\s*$; well-formed unavailable codes remain unknown_state.
  • noaa://datasets resource — all CDO datasets as injectable context
  • noaa://stations/{stationId} resource — station metadata by ID

Read the full file on GitHub · 347 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.

  1. yesterday Changed · +74 tokens per session 7b691bb69870
  2. 5d ago Changed · +70 tokens per session 1592ccd6b310
  3. 15d ago Changed · +1 lines · +379 tokens per session 2a08040f7081
  4. 1mo ago Changed · +2 lines · +147 tokens per session 0929929a6f4f
  5. 1mo ago First seen · 344 lines · 6,297 tokens per session scan A 65c57b5a2eae

Subscribe to this mod's changes

noaa-climate-mcp-server AGENTS.md is an instructions file published in the GitHub repository cyanheads/noaa-climate-mcp-server (4 stars, last pushed yesterday), licensed Apache-2.0. It adds 6,967 tokens to every session, about $0.0279 per session on Opus 5.5. A static security scan graded it A with 0 findings. It is 78% identical to obsidian-mcp-server AGENTS.md, differing in 350 lines, and is treated as a copy.

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