What is overview-geomagnetic-indices?

A guide for choosing datasets and parameters for standard spacecraft overview plots and geomagnetic indices. These indices, including Dst, AE, Kp, and SYM-H, summarize disturbances in Earth’s magnetic environment.

Use it to plan overview plots for THEMIS, MMS, or RBSP data, or to retrieve Dst, AE/AL/AU, Kp, and SYM-H values for a selected time interval.

It helps translate a broad request for space-weather context into specific data sources and measurements.

overview-geomagnetic-indices — Skill for Claude Code and Codex by sped

Install

Getting it into your agent

One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.

Any agent

npx skills add spedas/spedas_agent_kit --skill overview-geomagnetic-indices

Clone the repo

git clone --depth 1 https://github.com/spedas/spedas_agent_kit

Made for: Claude Code, Codex.

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/skills/spedas/spedas_agent_kit/overview-geomagnetic-indices/github.svg)](https://agentmods.dev/skills/spedas/spedas_agent_kit/overview-geomagnetic-indices)

Your own site

<a href="https://agentmods.dev/skills/spedas/spedas_agent_kit/overview-geomagnetic-indices"><img src="https://agentmods.dev/badge/skills/spedas/spedas_agent_kit/overview-geomagnetic-indices/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.

Your own site · 80×15

<a href="https://agentmods.dev/skills/spedas/spedas_agent_kit/overview-geomagnetic-indices"><img src="https://agentmods.dev/badge/skills/spedas/spedas_agent_kit/overview-geomagnetic-indices.svg" alt="Reviewed on agentmods" width="80" height="20"></a>

Per session 62 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.

When invoked 3,149 The whole file, excluding the scripts and references it only reads on demand.

Security scan A 0 findings. 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	$0.00062	$0.03149
Opus 5	$0.00031	$0.01574
Sonnet 5	$0.00012	$0.00630
Haiku 4.5	$0.00006	$0.00315

Measured 9d ago against content hash 421570f2e0f7, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-09, from the pricing page.

Security

Grade A, and why

overview-geomagnetic-indices 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 9d 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.

.agents/plugins/spedas-codex/skills/overview-geomagnetic-indices/SKILL.md · 176 lines

How it starts

The opening of the file, as written. The whole thing — 176 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Overview recipes + geomagnetic indices

Use this skill when the user asks for a standard summary/overview plot (IDL-SPEDAS style thm_gen_overplot / mms_overview_plot) or for common geomagnetic indices (Dst, AE/AL/AU, Kp, SYM-H) to contextualize a near-Earth interval.

This is intentionally an intent-to-dataset/parameter recipe, not a new backend. Plan first, then use the existing unified data layer and HAPI tools.

MCP/default-surface boundary

Treat pyspedas... loader names in this skill as external runtime routes, not Agent Kit MCP tool names (external_runtime_route.not_an_mcp_tool: true). MCP-only clients should call spedas_overview() and follow each guided_recipes.geomagnetic_indices[*].mcp_first_route before trying local Python. Those MCP-first routes use browse_data_sources, load_data_source, browse_data_parameters, and fetch_data_product against CDAWeb candidates:

Dst: OMNI2_H0_MRG1HR, browse Dst.
AE/AL/AU: OMNI_HRO_1MIN, OMNI_HRO2_1MIN, or OMNI2_H0_MRG1HR, browse AE_INDEX, AL_INDEX, and AU_INDEX.
Kp/ap: OMNI2_H0_MRG1HR, browse Kp and ap.
SYM-H/SYM-D/ASY-H/ASY-D: OMNI_HRO_1MIN or OMNI_HRO2_1MIN, browse the named parameters.

Use direct Kyoto/NOAA/GOES PySPEDAS loaders only when the surrounding runtime can import PySPEDAS and run local scripts; otherwise report the external-runtime requirement instead of inventing MCP tool names.

First calls

spedas_overview() — confirms the current recipe catalog.
plan_spedas_observation(science_goal=..., start=..., stop=...) — infer target, time range, and recommended source types.
For mission data: use browse_data_sources(source_type="cdaweb", query=<mission>), load_data_source(source_type="cdaweb", source_id=<observatory>), then browse_data_parameters(source_type="cdaweb", dataset_id=<dataset_id>) before fetching.
For HAPI OMNI context: start with browse_data_sources(source_type="hapi") and follow its next_tools to browse_hapi_catalog(server_url="https://cdaweb.gsfc.nasa.gov/hapi", query="OMNI_HRO"), then fetch_hapi_data(...) with the dataset/parameters below. The direct HAPI tools are demoted out of the default list_tools surface (issue #87); reach them via that discovery route or set SPEDAS_AGENT_KIT_DATASOURCE_TOOLS=1. HAPI support requires the optional spedas-agent-kit[hapi] extra; if unavailable, fall back to CDAWeb discovery for the same OMNI dataset IDs.

Read the full file on GitHub · 176 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.

9d ago First seen · 176 lines · 62 tokens per session scan A 421570f2e0f7

Subscribe to this mod's changes

overview-geomagnetic-indices is a skill published in the GitHub repository spedas/spedas_agent_kit (3 stars, last pushed 1mo ago), licensed MIT. It adds 62 tokens to every session and 3,149 once invoked, about $0.0003 per session on Opus 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.

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