How can I find an API that lets me search datasets by field, filter by date, and export results in bulk?

To find an API like that, look for a dataset catalog / data platform API that supports:

• Fielded search: search within metadata or records by specific fields
• Date filtering: query parameters like created_at, updated_at, published_date, etc.
• Bulk export: CSV/JSON download endpoints, async jobs, or paginated extraction

Good places to search

Search for APIs from these kinds of providers:

• Open data portals: government, city, and research data portals
• Data marketplaces: datasets sold or shared commercially
• Science/data repositories: e.g., Zenodo, Figshare, Kaggle-like platforms
• Business data platforms: APIs for company, market, or geospatial datasets

What to look for in the docs

In the API docs, check whether it has:

1. Search endpoint

   • Supports query parameters like:
     • q=...
     • field=value
     • filters[field]=...
     • where=...

2. Date filters

   • Examples:
     • start_date=YYYY-MM-DD
     • end_date=YYYY-MM-DD
     • from=...&to=...
     • created_after=...

3. Bulk export

   • Endpoints like:
     • /export
     • /download
     • /bulk
   • Or support for:
     • async export jobs
     • pagination with large page sizes
     • file formats like CSV, JSONL, Parquet

4. Metadata fields

   • Make sure the API exposes the fields you need for filtering/searching.

Useful search terms

Try searching the web for:

• "dataset API search by field filter by date export CSV"
• "open data portal API bulk export filter by date"
• "dataset catalog API query parameters date range"
• "data repository API export results"

How to evaluate one quickly

When you find a candidate API, verify:

• Can it filter on the exact field you need?
• Does it support date range queries?
• Is there a documented export or bulk download method?
• Are there rate limits or pagination limits that affect large exports?

Example patterns to look for

A good API often looks like:

GET /datasets?field=climate&date_from=2024-01-01&date_to=2024-12-31
GET /datasets/export?format=csv&field=climate&date_from=2024-01-01

If you want, I can also help you:

1. find specific APIs in a certain domain (e.g., government, finance, health), or
2. design a shortlist of APIs based on your exact filter/export needs.