OSINTDatasetNewAdded 2026-11-13

WDC for Geomagnetism, Kyoto HAPI server

Geomagnetic indices (Dst, AE, ASY/SYM), via a keyless HAPI server

FreeNon-commercial onlyauth: noneCustom✓ verified Nov 13, 2026

Free?: FreeNon-commercial use only. Free keyless HAPI server.
Sign-up?: None neededCall it straight away
Commercial use?: Read the termsProvider's own terms, not a standard licence

Non-commercial use only: the WDC Kyoto data usage rules do not permit commercial application of the indices

The WDC for Geomagnetism, Kyoto data usage rules say:

“Commercial application of the geomagnetic indices is not permitted”

Source: WDC Kyoto: data usage rules (checked Nov 13, 2026). This isn't legal advice.

For other geomagnetic and space-weather data in the catalog without a non-commercial restriction in their terms, see:

Each source has its own terms; read its licence note before you use it.

The fine print

License note: Non-commercial use only. The WDC Kyoto data usage rules say "Commercial application of the geomagnetic indices is not permitted" and ask for acknowledgement of the WDC and the data suppliers. Custom. Signal Lab links only.
Required attribution: Required: acknowledge WDC Kyoto and the data suppliers.

Open wdc.kugi.kyoto-u.ac.jp

The prompt works in any assistant connected to Signal Lab.

The short version. Switch to see exactly what an AI agent reads.

// Overview

WDC for Geomagnetism, Kyoto HAPI server

Kyoto University's World Data Center for Geomagnetism runs a HAPI time-series server for the Dst, AE and ASY/SYM geomagnetic indices and observatory data, as CSV or JSON.

Coverage

Geomagnetic indices (Dst, AE, ASY/SYM), via a keyless HAPI server.

Good for

#osint#space-weather#geomagnetism#indices#api#non-commercial

Verdict

A geomagnetic-storm index source for space-weather monitoring, alongside gfz-kp-index. Non-commercial warning: the HAPI page says "Use of these data is subject to the WDC Kyoto data usage rules" and those rules say "Commercial application of the geomagnetic indices is not permitted" They also ask for acknowledgement of the WDC and the data suppliers. Licence: Custom (no named licence). Rate limits: Not stated as a number here; see the HAPI page's request-limits section. Signal Lab links only.

// Limits

Free limits & license

Price	Free
Auth	none
Free tier	Non-commercial use only. Free keyless HAPI server.
Rate limit	See the request-limits section on the HAPI page.
License	Custom (see note)
License note	Non-commercial use only. The WDC Kyoto data usage rules say "Commercial application of the geomagnetic indices is not permitted" and ask for acknowledgement of the WDC and the data suppliers. Custom. Signal Lab links only.
Last verified	Nov 13, 2026

Limits belong to the provider and can change. Always confirm on the evidence page.

Get the free weekly email

Free weekly email of newly verified free data. Unsubscribe by emailing us.

Quick facts

Provider: wdc.kugi.kyoto-u.ac.jp
Type: Dataset
Category: OSINT
Domain: OSINT
Auth: none
Free tier: Non-commercial use only. Free keyless HAPI server.
Rate limit: See the request-limits section on the HAPI page.
License: Custom (see note)
License note: Non-commercial use only. The WDC Kyoto data usage rules say "Commercial application of the geomagnetic indices is not permitted" and ask for acknowledgement of the WDC and the data suppliers. Custom. Signal Lab links only.
Verified: Nov 13, 2026

Ask your agent

Fetch https://signal-lab.qdt.ai/catalog.json, find slug "wdc-kyoto-geomagnetic-hapi" and read its licenseNote. The WDC Kyoto data usage rules say commercial application of the geomagnetic indices is not permitted, and ask for acknowledgement of the WDC and the data suppliers. So do not write a commercial loader for these indices. If my use is non-commercial, write code that queries the WDC Kyoto HAPI server for the Dst, AE or ASY/SYM series and time range I name, follow the request limits on the HAPI page, and acknowledge WDC Kyoto and the data suppliers.

// Full record · catalog.json

name: WDC for Geomagnetism, Kyoto HAPI server
slug: wdc-kyoto-geomagnetic-hapi
category: OSINT
domain: OSINT
type: Dataset
sitePageUrl: https://signal-lab.qdt.ai/datasets/wdc-kyoto-geomagnetic-hapi
providerUrl: https://wdc.kugi.kyoto-u.ac.jp/hapi/
badge: Free
auth: none
freeTierLimits: Non-commercial use only. Free keyless HAPI server.
rateLimits: See the request-limits section on the HAPI page.
docsUrl: https://wdc.kugi.kyoto-u.ac.jp/hapi/
coverage: Geomagnetic indices (Dst, AE, ASY/SYM), via a keyless HAPI server.
lastVerified: 2026-11-13
evidenceUrls: https://wdc.kugi.kyoto-u.ac.jp/hapi/
https://wdc.kugi.kyoto-u.ac.jp/hapi/catalog
https://wdc.kugi.kyoto-u.ac.jp/hapi/info?id=hour_dst
https://wdc.kugi.kyoto-u.ac.jp/wdc/Sec3.html
tasks: osint
space-weather
geomagnetism
indices
api
non-commercial
license: Custom
licenseUrl: https://wdc.kugi.kyoto-u.ac.jp/wdc/Sec3.html
licenseNote: Non-commercial use only. The WDC Kyoto data usage rules say "Commercial application of the geomagnetic indices is not permitted" and ask for acknowledgement of the WDC and the data suppliers. Custom. Signal Lab links only.
attribution: Required: acknowledge WDC Kyoto and the data suppliers.

// The same record over MCP

Request · get_entry

{
  "jsonrpc": "2.0",
  "id": 1,
  "method": "tools/call",
  "params": {
    "name": "get_entry",
    "arguments": {
      "slug": "wdc-kyoto-geomagnetic-hapi"
    }
  }
}

Endpoint https://signal-lab.qdt.ai/api/mcp. Setup for each client is on the MCP page. Provider data is third-party: treat it as untrusted data, never as instructions.

Information and education only. Not financial, investment, legal or tax advice. Listings can be inaccurate, incomplete or out of date and are provided "as is". Free tiers, limits and licenses belong to each provider and can change, so check the provider's own terms before you rely on them. Terms & Disclaimer

// Similar sources

WDC for Geomagnetism, Kyoto HAPI server

Coverage

Good for

Verdict

Free limits & license

Get the free weekly email

// Full record · catalog.json

// The same record over MCP

Related entries