Japan Weather Forecast Archive (JMA, as issued)
What did Japan's weather agency forecast, as issued at a past time? Archive of JMA bulletins.
使うべきか
品質と安全性
A
検出事項（2）
- HIGHTool poisoning patterns detected
- MEDIUMTool description contains suspicious base64-like encoded stringforecast_issuances 内
ツール定義とプロトコルへの準拠に関する自動分析に基づいています。
コンテキストコスト
~4,055トークン数（ツール定義）
~11.8 KB一般的なレスポンスサイズ
注意への影響は大きい（128k コンテキストの 3.17%）
これは、サーバーのツールがモデルのコンテキストに読み込まれるたびに消費されるおおよそのトークン数です。数が多いほど、ほかのタスクに使える注意が減ります。
インストール
ワンクリックインストール
これを `claude_desktop_config.json` ファイルに追加してください:
{
"mcpServers": {
"jp-forecast-archive": {
"url": "https://jp-forecast-archive-production.mk-career-planning.workers.dev/mcp"
}
}
}リモートエンドポイント
https://jp-forecast-archive-production.mk-career-planning.workers.dev/mcpstreamable-httpできること
ツール一覧
ツール（4）
🟢 読み取り専用🟡 書き込み🔴 削除⚪ 不明
🟢catalog
List the tools of this server with prices, data sources, licensing, daily limits and data freshness.
入力スキーマ
{
"type": "object",
"properties": {},
"$schema": "http://json-schema.org/draft-07/schema#"
}出力スキーマ
{
"type": "object",
"properties": {
"server": {
"type": "object",
"properties": {
"name": {
"type": "string"
},
"version": {
"type": "string"
},
"stage": {
"type": "string"
}
},
"required": [
"name",
"version",
"stage"
],
"additionalProperties": {}
},
"payment": {
"type": "object",
"properties": {
"protocol": {
"type": "string"
},
"network": {
"type": "string"
},
"asset": {
"type": "string"
},
"enabled": {
"type": "boolean"
}
},
"required": [
"protocol",
"network",
"asset",
"enabled"
],
"additionalProperties": {}
},
"daily_limits": {
"type": "object",
"properties": {},
"additionalProperties": {},
"description": "Daily limits of paid calls (calls, usd, timezone) or a misconfiguration notice."
},
"paused": {
"type": "object",
"propertyNames": {
"type": "string"
},
"additionalProperties": {
"type": "boolean"
},
"description": "Operator pause flags (true = paused)."
},
"tools": {
"type": "array",
"items": {
"type": "object",
"properties": {
"name": {
"type": "string"
},
"price_usd": {
"type": "number",
"description": "Price per call in USD (0 = free)."
},
"description": {
"type": "string"
}
},
"required": [
"name",
"price_usd",
"description"
],
"additionalProperties": {}
},
"description": "Every tool of this server with its price."
},
"legal": {
"type": "object",
"properties": {},
"additionalProperties": {}
},
"fetch_status_values": {
"type": "object",
"propertyNames": {
"type": "string"
},
"additionalProperties": {
"type": "string"
}
},
"provenance": {
"type": "array",
"items": {
"type": "object",
"properties": {
"source": {
"type": "object",
"properties": {
"publisher": {
"type": "string"
},
"url": {
"type": "string"
}
},
"required": [
"publisher",
"url"
],
"additionalProperties": {},
"description": "Publisher and URL of the upstream document or dataset."
},
"upstream_updated_at": {
"description": "Update time stated by the upstream, or null when it states none.",
"type": [
"string",
"null"
]
},
"retrieved_at": {
"description": "When this service retrieved the upstream data (null if unknown).",
"type": [
"string",
"null"
]
},
"content_sha256": {
"type": [
"string",
"null"
]
},
"parser_version": {
"type": "string"
},
"fetch_status": {
"type": "string",
"enum": [
"found",
"empty",
"stale",
"unavailable",
"unsupported"
],
"description": "found / empty / stale / unavailable / unsupported (see catalog fetch_status_values)."
},
"processed_by": {
"type": "string"
}
},
"required": [
"source",
"upstream_updated_at",
"retrieved_at",
"content_sha256",
"parser_version",
"fetch_status",
"processed_by"
],
"additionalProperties": {},
"description": "Freshness receipt for one upstream source."
},
"description": "Freshness receipts for every upstream source used."
},
"terms": {
"type": "string",
"description": "URL of the terms of service."
}
},
"required": [
"server",
"payment",
"daily_limits",
"paused",
"tools",
"legal",
"terms"
],
"$schema": "http://json-schema.org/draft-07/schema#",
"additionalProperties": {}
}🟢forecast_as_issued(area, at, issued_at)
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.
入力スキーマ
{
"type": "object",
"properties": {
"area": {
"type": "string",
"maxLength": 40,
"description": "JMA forecast office code (130000), sub-area code (130010), prefecture (Tokyo, 東京都, 13) or JMA area name (Kushiro Nemuro). Prefectures with several offices (Hokkaido, Kagoshima, Okinawa) need the office or sub-area"
},
"at": {
"description": "ISO 8601 date-time with time zone: return the issuance in effect at this time, e.g. 2026-10-12T09:00:00+09:00",
"type": "string",
"maxLength": 40
},
"issued_at": {
"description": "ISO 8601 date-time with time zone: return the issuance with exactly this JMA issue time, e.g. 2026-10-12T05:00:00+09:00",
"type": "string",
"maxLength": 40
}
},
"required": [
"area"
],
"$schema": "http://json-schema.org/draft-07/schema#"
}出力スキーマ
{
"type": "object",
"properties": {
"official_check": {
"type": "object",
"properties": {
"message": {
"type": "string"
},
"urls": {
"type": "array",
"items": {
"type": "string"
}
}
},
"required": [
"message",
"urls"
],
"additionalProperties": {},
"description": "Read first: this is an archive of what JMA issued; for current forecasts check the JMA pages listed here."
},
"archive_notice": {
"type": "string",
"description": "Every answer is an archived issuance, not the current forecast and not a forecast made by this service."
},
"query": {
"type": "object",
"properties": {
"office": {
"type": "string"
}
},
"required": [
"office"
],
"additionalProperties": {}
},
"status": {
"type": "string",
"enum": [
"found",
"not_archived",
"unknown",
"no_issuance_at_that_time"
],
"description": "found = the archived issuance; not_archived = before this archive's start (JMA does not publish past forecasts); unknown = the feed was not read for part of the period or the bulletin could not be read; no_issuance_at_that_time = feed read, no issuance with exactly that issue time."
},
"status_note": {
"type": "string"
},
"issuance": {
"anyOf": [
{
"type": "object",
"properties": {
"office": {
"type": "object",
"properties": {
"code": {
"type": "string"
},
"name_ja": {
"type": "string"
},
"name_en": {
"type": "string"
}
},
"required": [
"code",
"name_ja",
"name_en"
],
"additionalProperties": {}
},
"report_datetime": {
"type": "string",
"description": "JMA's issue time as published (Head/ReportDateTime, +09:00)."
},
"report_datetime_utc": {
"type": "string"
},
"published_at": {
"type": "string",
"description": "When JMA transmitted the bulletin (Control/DateTime)."
},
"fetched_at": {
"type": "string",
"description": "When this service retrieved the bulletin. Not JMA's time."
},
"issuance_type": {
"type": "string",
"enum": [
"scheduled",
"unscheduled",
"correction",
"cancellation"
]
},
"areas": {
"type": "array",
"items": {
"type": "object",
"properties": {
"code": {
"type": "string"
},
"name_ja": {
"type": "string"
},
"name_en": {
"type": [
"string",
"null"
]
},
"elements": {
"type": "object",
"propertyNames": {
"type": "string"
},
"additionalProperties": {}
}
},
"required": [
"code",
"name_ja",
"name_en",
"elements"
],
"additionalProperties": {}
}
},
"stations": {
"type": "array",
"items": {
"type": "object",
"properties": {
"code": {
"type": "string"
},
"name_ja": {
"type": "string"
},
"elements": {
"type": "object",
"propertyNames": {
"type": "string"
},
"additionalProperties": {}
}
},
"required": [
"code",
"name_ja",
"elements"
],
"additionalProperties": {}
}
},
"source": {
"type": "object",
"properties": {
"url": {
"type": "string"
},
"doc_key": {
"type": "string"
},
"raw_sha256": {
"type": "string"
}
},
"required": [
"url",
"doc_key",
"raw_sha256"
],
"additionalProperties": {}
}
},
"required": [
"office",
"report_datetime",
"report_datetime_utc",
"published_at",
"fetched_at",
"issuance_type",
"areas",
"stations",
"source"
],
"additionalProperties": {}
},
{
"type": "null"
}
]
},
"archive": {
"type": "object",
"properties": {
"office_archive_start": {
"description": "First issuance held for this office (JMA issue time, Japan time).",
"type": [
"string",
"null"
]
},
"tracking_since": {
"description": "Start of the period this service has read JMA's feed (UTC).",
"type": [
"string",
"null"
]
}
},
"required": [
"office_archive_start",
"tracking_since"
],
"additionalProperties": {}
},
"legal_notice": {
"type": "string"
},
"attribution": {
"type": "object",
"properties": {
"source_ja": {
"type": "string"
},
"processed_ja": {
"type": "string"
},
"source_en": {
"type": "string"
},
"license_note": {
"type": "string"
}
},
"required": [
"source_ja",
"processed_ja",
"source_en",
"license_note"
],
"additionalProperties": {}
},
"answered_at": {
"type": "string"
},
"provenance": {
"type": "array",
"items": {
"type": "object",
"properties": {
"source": {
"type": "object",
"properties": {
"publisher": {
"type": "string"
},
"url": {
"type": "string"
}
},
"required": [
"publisher",
"url"
],
"additionalProperties": {},
"description": "Publisher and URL of the upstream document or dataset."
},
"upstream_updated_at": {
"description": "Update time stated by the upstream, or null when it states none.",
"type": [
"string",
"null"
]
},
"retrieved_at": {
"description": "When this service retrieved the upstream data (null if unknown).",
"type": [
"string",
"null"
]
},
"content_sha256": {
"type": [
"string",
"null"
]
},
"parser_version": {
"type": "string"
},
"fetch_status": {
"type": "string",
"enum": [
"found",
"empty",
"stale",
"unavailable",
"unsupported"
],
"description": "found / empty / stale / unavailable / unsupported (see catalog fetch_status_values)."
},
"processed_by": {
"type": "string"
}
},
"required": [
"source",
"upstream_updated_at",
"retrieved_at",
"content_sha256",
"parser_version",
"fetch_status",
"processed_by"
],
"additionalProperties": {},
"description": "Freshness receipt for one upstream source."
},
"description": "Freshness receipts for every upstream source used."
},
"terms": {
"type": "string",
"description": "URL of the terms of service."
}
},
"required": [
"official_check",
"archive_notice",
"query",
"status",
"status_note",
"issuance",
"archive",
"legal_notice",
"attribution",
"answered_at",
"provenance",
"terms"
],
"$schema": "http://json-schema.org/draft-07/schema#",
"additionalProperties": {}
}🟢forecast_issuances(area, since, until, limit)
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.
入力スキーマ
{
"type": "object",
"properties": {
"area": {
"type": "string",
"maxLength": 40,
"description": "JMA forecast office code (130000), sub-area code (130010), prefecture (Tokyo, 東京都, 13) or JMA area name (Kushiro Nemuro). Prefectures with several offices (Hokkaido, Kagoshima, Okinawa) need the office or sub-area"
},
"since": {
"type": "string",
"maxLength": 40,
"description": "Issuances after this: ISO 8601 date (00:00 Japan time) or date-time with time zone, e.g. 2026-10-12 or 2026-10-12T05:00:00+09:00"
},
"until": {
"description": "Optional end: ISO 8601 date (00:00 Japan time) or date-time with time zone (default now)",
"type": "string",
"maxLength": 40
},
"limit": {
"description": "Maximum number of issuances, 1-500 (default 100)",
"type": "integer",
"minimum": 1,
"maximum": 500
}
},
"required": [
"area",
"since"
],
"$schema": "http://json-schema.org/draft-07/schema#"
}出力スキーマ
{
"type": "object",
"properties": {
"official_check": {
"type": "object",
"properties": {
"message": {
"type": "string"
},
"urls": {
"type": "array",
"items": {
"type": "string"
}
}
},
"required": [
"message",
"urls"
],
"additionalProperties": {},
"description": "Read first: this is an archive of what JMA issued; for current forecasts check the JMA pages listed here."
},
"archive_notice": {
"type": "string",
"description": "Every answer is an archived issuance, not the current forecast and not a forecast made by this service."
},
"query": {
"type": "object",
"properties": {
"office": {
"type": "string"
},
"since": {
"type": "string"
},
"until": {
"type": "string"
}
},
"required": [
"office",
"since",
"until"
],
"additionalProperties": {}
},
"history_window": {
"type": "object",
"properties": {
"free_days": {
"type": "number",
"description": "Days of recorded history served free of charge."
},
"requested_since": {
"type": "string",
"description": "The since you asked for (normalized to ISO 8601)."
},
"served_since": {
"type": "string",
"description": "The since actually applied: requested_since, or the start of the free window if requested_since was earlier."
},
"clamped": {
"type": "boolean",
"description": "true when requested_since was earlier than the free window and the answer covers only the window."
},
"older_history": {
"type": "string",
"description": "Status of recorded history older than the free window."
}
},
"required": [
"free_days",
"requested_since",
"served_since",
"clamped",
"older_history"
],
"additionalProperties": {},
"description": "Free history window applied to this answer."
},
"archive": {
"type": "object",
"properties": {
"office_archive_start": {
"description": "First issuance held for this office (JMA issue time, Japan time).",
"type": [
"string",
"null"
]
},
"tracking_since": {
"description": "Start of the period this service has read JMA's feed (UTC).",
"type": [
"string",
"null"
]
}
},
"required": [
"office_archive_start",
"tracking_since"
],
"additionalProperties": {}
},
"coverage": {
"type": "object",
"properties": {
"complete": {
"type": "boolean"
},
"since_before_tracking": {
"type": "boolean"
},
"gaps": {
"type": "array",
"items": {
"type": "object",
"properties": {
"from": {
"type": "string"
},
"to": {
"type": "string"
}
},
"required": [
"from",
"to"
],
"additionalProperties": {}
}
},
"note": {
"type": "string"
}
},
"required": [
"complete",
"since_before_tracking",
"gaps",
"note"
],
"additionalProperties": {}
},
"issuances": {
"type": "array",
"items": {
"type": "object",
"properties": {
"report_datetime": {
"type": "string"
},
"published_at": {
"type": "string"
},
"fetched_at": {
"type": "string"
},
"issuance_type": {
"type": "string",
"enum": [
"scheduled",
"unscheduled",
"correction",
"cancellation",
"unknown"
]
},
"record_status": {
"type": "string",
"enum": [
"readable",
"unreadable"
]
},
"source": {
"type": "object",
"properties": {
"url": {
"type": "string"
},
"raw_sha256": {
"type": "string"
}
},
"required": [
"url",
"raw_sha256"
],
"additionalProperties": {}
}
},
"required": [
"report_datetime",
"published_at",
"fetched_at",
"issuance_type",
"record_status",
"source"
],
"additionalProperties": {}
},
"description": "JMA issuances held for this office, oldest first."
},
"truncated": {
"type": "boolean"
},
"legal_notice": {
"type": "string"
},
"attribution": {
"type": "object",
"properties": {
"source_ja": {
"type": "string"
},
"processed_ja": {
"type": "string"
},
"source_en": {
"type": "string"
},
"license_note": {
"type": "string"
}
},
"required": [
"source_ja",
"processed_ja",
"source_en",
"license_note"
],
"additionalProperties": {}
},
"answered_at": {
"type": "string"
},
"provenance": {
"type": "array",
"items": {
"type": "object",
"properties": {
"source": {
"type": "object",
"properties": {
"publisher": {
"type": "string"
},
"url": {
"type": "string"
}
},
"required": [
"publisher",
"url"
],
"additionalProperties": {},
"description": "Publisher and URL of the upstream document or dataset."
},
"upstream_updated_at": {
"description": "Update time stated by the upstream, or null when it states none.",
"type": [
"string",
"null"
]
},
"retrieved_at": {
"description": "When this service retrieved the upstream data (null if unknown).",
"type": [
"string",
"null"
]
},
"content_sha256": {
"type": [
"string",
"null"
]
},
"parser_version": {
"type": "string"
},
"fetch_status": {
"type": "string",
"enum": [
"found",
"empty",
"stale",
"unavailable",
"unsupported"
],
"description": "found / empty / stale / unavailable / unsupported (see catalog fetch_status_values)."
},
"processed_by": {
"type": "string"
}
},
"required": [
"source",
"upstream_updated_at",
"retrieved_at",
"content_sha256",
"parser_version",
"fetch_status",
"processed_by"
],
"additionalProperties": {},
"description": "Freshness receipt for one upstream source."
},
"description": "Freshness receipts for every upstream source used."
},
"terms": {
"type": "string",
"description": "URL of the terms of service."
}
},
"required": [
"official_check",
"archive_notice",
"query",
"history_window",
"archive",
"coverage",
"issuances",
"truncated",
"legal_notice",
"attribution",
"answered_at",
"provenance",
"terms"
],
"$schema": "http://json-schema.org/draft-07/schema#",
"additionalProperties": {}
}🟢get_receipt(receipt_id)
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.
入力スキーマ
{
"type": "object",
"properties": {
"receipt_id": {
"type": "string",
"minLength": 1,
"maxLength": 80,
"description": "The receipt_id returned with a paid result (\"rcpt_\" + 64 hex characters)."
}
},
"required": [
"receipt_id"
],
"$schema": "http://json-schema.org/draft-07/schema#"
}出力スキーマ
{
"type": "object",
"properties": {
"receipt_id": {
"type": "string",
"description": "Receipt id of the settled paid call (\"rcpt_\" + 64 hex). Use with get_receipt."
},
"tool": {
"type": "string",
"description": "Name of the paid tool that produced the result."
},
"settled_at": {
"type": [
"string",
"null"
]
},
"payment": {
"type": "object",
"properties": {
"network": {
"type": [
"string",
"null"
]
},
"transaction": {
"type": [
"string",
"null"
]
}
},
"required": [
"network",
"transaction"
],
"additionalProperties": {}
},
"result": {
"description": "The stored result, exactly as returned by the paid call."
},
"provenance": {
"type": "array",
"items": {
"type": "object",
"properties": {
"source": {
"type": "object",
"properties": {
"publisher": {
"type": "string"
},
"url": {
"type": "string"
}
},
"required": [
"publisher",
"url"
],
"additionalProperties": {},
"description": "Publisher and URL of the upstream document or dataset."
},
"upstream_updated_at": {
"description": "Update time stated by the upstream, or null when it states none.",
"type": [
"string",
"null"
]
},
"retrieved_at": {
"description": "When this service retrieved the upstream data (null if unknown).",
"type": [
"string",
"null"
]
},
"content_sha256": {
"type": [
"string",
"null"
]
},
"parser_version": {
"type": "string"
},
"fetch_status": {
"type": "string",
"enum": [
"found",
"empty",
"stale",
"unavailable",
"unsupported"
],
"description": "found / empty / stale / unavailable / unsupported (see catalog fetch_status_values)."
},
"processed_by": {
"type": "string"
}
},
"required": [
"source",
"upstream_updated_at",
"retrieved_at",
"content_sha256",
"parser_version",
"fetch_status",
"processed_by"
],
"additionalProperties": {},
"description": "Freshness receipt for one upstream source."
},
"description": "Freshness receipts for every upstream source used."
},
"terms": {
"type": "string",
"description": "URL of the terms of service."
}
},
"required": [
"receipt_id",
"tool",
"settled_at",
"payment",
"result",
"provenance",
"terms"
],
"$schema": "http://json-schema.org/draft-07/schema#",
"additionalProperties": {}
}コミュニティ
エビデンス
最近の観測
検証済みバージョンは記録されていませんツール 4 件