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Japan Weather Forecast Archive (JMA, as issued)
io.github.mk-career-planningPublished by GitHub account mk-career-planningv0.1.0Updated Oct 24, 2026
What did Japan's weather agency forecast, as issued at a past time? Archive of JMA bulletins.
Overview
Japan Weather Forecast Archive (JMA, as issued)'s hosted MCP server (jp-forecast-archive-production.mk-career-planning.workers.dev); no sign-in required; Streamable HTTP; 4 tools.
No AI overview yet: these facts come from the registry entry and the server itself.
- Endpoint
- jp-forecast-archive-production.mk-career-planning.workers.dev
- Last checked
Installation
In SourceWeft
- Open Japan Weather Forecast Archive (JMA, as issued) in the dashboard and add it to a workspace.
- Enable the server for the chats that should use its tools.
Web executable via Streamable HTTP. Remote servers run from the web runtime once configured in a workspace.
Use with an agent
Paste this prompt into Claude Code, Codex, Cursor or another agent — or into SourceWeft chat. The agent reads this server's install guide, shows you its publisher, endpoint and sign-in, and adds it to your client once you agree. Keys never go into a command.
Read https://sourceweft.com/mcp/io.github.mk-career-planning%2Fjp-forecast-archive/install.md and connect the MCP server it describes to my client. Before changing any config, show me its publisher, endpoint and sign-in method and wait for my OK. Never put an API key in a command or in a file I would commit; ask me where it should come from.Other MCP clients
Add this to your client's mcpServers config.
{
"mcpServers": {
"japan-weather-forecast-archive-jma-as-is": {
"type": "http",
"url": "https://jp-forecast-archive-production.mk-career-planning.workers.dev/mcp"
}
}
}Tools
4forecast_as_issued
JMA forecast as issued at a past time
Archived JMA prefectural weather forecast as issued. Give an area and at (forecast in effect then) or issued_at (exact JMA issue time). Returns JMA's bulletin as published (Japanese weather text, wind, waves, 6-hour rain probability, temperatures) with report_datetime (JMA's issue time) apart from fetched_at (ours). Status found, not_archived (before this archive started), unknown or no_issuance_at_that_time. Not the current forecast: check JMA.
Parameters
atarearequiredissued_atforecast_issuances
List of JMA forecast issuances for an area
Which prefectural weather forecasts did JMA issue for an area between two times? Lists each archived issuance (JMA issue time, transmission time, our fetch time, scheduled/unscheduled/correction/cancellation, bulletin URL and SHA-256) with coverage gaps where JMA's feed could not be read. Free window: last 30 days (an earlier since is clamped; see history_window). Use forecast_as_issued for the content. An archive, not a forecast service.
Parameters
arearequiredlimitsincerequireduntilget_receipt
Get receipt of a paid call
Re-fetch the stored result of a settled paid call by its receipt_id, for when the response was lost after payment. Free. Unknown or unsettled receipt ids return RECEIPT_NOT_FOUND. Results are kept for 90 days after settlement.
Parameters
receipt_idrequiredVersion history
1- v0.1.0LatestOct 17, 2026
Score
83% of the applicable checks met
How complete this listing is, computed from the registry entry, the endpoint and public sources. Not a rating of the server and not a statement that it is safe or working today: reachability is a dated check, and no installs or reviews go into the score.
- Reached in the last 30 daysRequired25 pts
- Auth declaredRequired10 pts
- Tools listedRequired15 pts
- DescriptionRequired15 pts
- Logo10 pts
- Documentation15 pts
Declare a GitHub repository with a README, or serve resource_documentation in the OAuth protected-resource metadata.
- LicenseNot applicable
A hosted service is used under its provider's terms, so no license is expected here. This check is left out of the percentage.