GEE Dataset Intelligence

Search and compare GEE datasets / 检索和比较 GEE 数据集

Use the bundled catalog index as the factual source for Earth Engine dataset metadata. Use scripts/query_catalog.py for deterministic retrieval, then explain the result in the user's language with official source URLs and the Earth Engine constructor snippet. Do not invent bands, dates, licenses, or coverage that are absent from the record.

Workflow

1. Load the local index. If it is missing, stale, or the user explicitly asks for current data, run scripts/update_catalog.py or import update_catalog.update_catalog().
2. Translate the user's intent into hard filters before ranking. Use --region china or --bbox for named areas, --max-gsd for the finest acceptable native resolution, --temporal-start/--temporal-end for overlap, and --type, --tag, --band, --provider, or --open-license when explicitly requested. Add --require-full-coverage for wording such as "covers China" or "global", and --require-full-temporal for wording such as "since 2000" or "throughout 2018-2024". Treat bbox as an outer envelope, not proof that every point inside has data. Strict full-coverage searches exclude records whose bbox audit is suspicious, uncertain, or invalid. Use --include-suspect-bbox only when the user explicitly wants raw STAC behavior and disclose the risk.
3. Use --query for remaining subject terms. The query engine expands common remote-sensing terms such as surface reflectance, optical, radar, DEM, precipitation, land cover, and vegetation index.
4. Return a short ranked list. Include ID, type, status, provider, time range, spatial extent, GSD, useful bands, license, code snippet, and source URL.
5. For comparisons, use --compare and present the differences rather than repeating full descriptions. For one asset, use --id.
6. State uncertainty explicitly. Chinese text is marked as Google AI translation; prefer the English STAC description when the translations conflict.

English usage

Convert factual requirements into hard filters first. Use --band for exact band names, and combine --band-text with --max-band-gsd when a requested spectral property must meet a resolution limit. If the exact query returns no results, state that clearly, then run a second relaxed query and label it as an alternative rather than silently weakening the requirement.

powershell

python scripts\query_catalog.py --query "surface reflectance" `
  --region china --type image_collection --max-gsd 10 `
  --temporal-start 2017-01-01 --require-full-coverage `
  --language zh-cn --limit 8

python scripts\query_catalog.py --id COPERNICUS/S2_SR_HARMONIZED --language zh-cn

python scripts\query_catalog.py --compare `
  COPERNICUS/S2_SR_HARMONIZED LANDSAT/LC08/C02/T1_L2 --format markdown

python scripts\query_catalog.py --query optical --region china `
  --type image_collection --band-text "red edge" --max-band-gsd 20 `
  --require-full-coverage --language en

The default JSON output is the stable machine-readable interface. Use --format markdown for a user-facing list. A no-result response means the hard filters were too restrictive; relax one filter at a time and report that change rather than silently dropping constraints.

中文用法

先把用户要求转换为硬过滤条件，再进行自由文本排序。精确波段名使用 --band；需要按波段含义筛选时使用 --band-text；若该波段还必须满足 指定分辨率，同时使用 --max-band-gsd。严格查询无结果时，应明确说明 “没有完全符合项”，然后单独执行放宽条件的备选查询，不能静默删除约束。

powershell

# 查询完整覆盖中国、10 米以内的地表反射率影像集合
python scripts\query_catalog.py --query "地表反射率" `
  --region china --type image_collection --max-gsd 10 `
  --require-full-coverage --language zh-cn --limit 8

# 查询红边波段本身不粗于 20 米的数据集
python scripts\query_catalog.py --query optical --region china `
  --type image_collection --band-text "red edge" --max-band-gsd 20 `
  --require-full-coverage --language zh-cn

# 比较两个土地覆盖产品的时间、分辨率、波段和更新频率
python scripts\query_catalog.py --compare `
  ESA/WorldCover/v200 MODIS/061/MCD12Q1 --language zh-cn

输出结果中的 cadence 表示更新或重访周期，band_gsd_m 表示各波段的 原生分辨率。bbox 只是外包矩形；要求“覆盖中国”时必须使用 --require-full-coverage，并保留默认的可疑范围排除规则。

Update

The updater is an explicit network operation. It traverses the official Earth Engine STAC tree, fetches every item, parses the English and Chinese catalog lists, and optionally fetches all Chinese detail pages. It writes assets/catalog.jsonl.gz and the ClawHub-compatible text transport assets/catalog.jsonl.xz.base64.txt, plus the human-readable bilingual table assets/catalog-summary.tsv, then writes assets/manifest.json. It refuses unexpectedly partial updates and records source-set differences and field completeness.

powershell

$env:HTTP_PROXY = 'http://127.0.0.1:7897'
$env:HTTPS_PROXY = 'http://127.0.0.1:7897'
python scripts\update_catalog.py --workers 8

For a quick daily refresh, skip translated detail pages:

powershell

python scripts\update_catalog.py --skip-localized-details

The importable API is:

python

from update_catalog import update_catalog

manifest = update_catalog(
    proxy="http://127.0.0.1:7897",
    include_localized_details=True,
)

PowerShell users can call Update-GEECatalog from the repository root Update-GEECatalog.ps1 wrapper. Set GEE_AUDIT_API_KEY and use Update-GEECatalog -Audit to refresh the catalog and spatial audit in one function call.

Spatial audit

Run the audit after a catalog refresh or when a regional product appears in an unrelated regional search. The default command is offline and applies only heuristics plus existing manual curation. --enable-llm explicitly sends public candidate metadata (ID, title, description, bbox, provider, and source URL) to the configured LLM endpoint. --enable-source-review explicitly fetches official developers.google.com pages. Never promote an LLM-only verdict to confirmed_suspicious.

powershell

# Offline audit: no web requests and no API key use
python scripts\audit_catalog.py

# Optional network audit: set GEE_AUDIT_API_KEY in this shell first
$env:GEE_AUDIT_BASE_URL = 'https://api.minimaxi.com/v1'
$env:GEE_AUDIT_MODEL = 'MiniMax-M3'
$env:GEE_AUDIT_API_STYLE = 'openai'
python scripts\audit_catalog.py `
  --enable-llm --enable-source-review --write-overrides

Without --write-overrides, audit commands write reports but preserve the bundled corrections. Replacing assets/audit-overrides.json requires both network review flags and one valid classification for every candidate. Interrupted runs resume from reports/catalog-audit-progress.json. Review reports/catalog-audit.md, then record durable human decisions in assets/audit-curation.json and rerun.

Local query commands read catalog assets only. Refresh writes the catalog and manifest under assets/; audit writes reports and changes bundled overrides only with --write-overrides after both network reviews. Do not put API keys in skill files, command examples, reports, or version control.

本地查询只读取目录文件，不联网。目录更新会访问 Google 官方数据源并写入 assets/；只有显式添加 --enable-llm 或 --enable-source-review 时，审计 才会调用第三方模型或抓取 Google 页面；只有再显式添加 --write-overrides 才会替换纠错文件。不要把 API Key 写入 Skill、报告或版本 控制。

Data and provenance

The normalized records preserve asset ID, catalog slug, title, description, GEE type, status, dates, bounding box, provider, keywords, categories, license, terms, citation, DOI, cadence, bands, GSD, schema, visualizations, STAC URL, HTML source URL, and bilingual localizations. The repository stores extracted metadata and provenance URLs, not mirrored Google HTML pages.

Open assets/catalog-summary.tsv in a text editor or spreadsheet application when a person needs to browse the catalog without decoding JSONL.

Read schema.md when interpreting fields and query-guide.md when converting a natural language request into filters.

Failure handling

• If catalog files are absent, tell the user to run the updater.
• If a source request fails, retry with backoff and preserve the previous localized record when available.
• Refuse to replace a complete catalog when STAC failures exceed the safety threshold unless --allow-partial is explicit.
• Run scripts/validate_catalog.py after updates. Treat duplicate IDs, hash mismatches, low record counts, and missing required fields as errors.
• Treat proprietary, custom, or missing licenses as not verified open access; do not promise commercial usability.
• Do not infer continuous coverage from an image-collection bbox. For a high-stakes area, inspect image footprints or test the collection in Earth Engine after catalog filtering.

Credentials

The offline audit / query workflow does not require any credentials. Only the optional LLM translation of dataset descriptions (Chinese ↔ English) needs an OpenAI-compatible API key.

Resolution order for LLM key:

1. OPENAI_API_KEY env var
2. Default (geoskill-core credentials.py): empty — set the env var to enable

LLM translation is opt-in; the skill works fine without it (translations just fall back to the local bilingual catalog). The key is never written to skill source, sidecars, or logs.