Search the Opportunities Circle catalog (scholarships, fellowships, internships, grants, jobs, competitions, online courses, training, conferences, exchange programs). This is the main discovery tool. Free-text query plus optional filters by opportunity type, country, funding, and free-form tags. By default EXPIRED opportunities are excluded and results are newest-first. Returns a formatted list; use the returned id (or URL) with oppcircle_get for full details. Tip: to discover valid type slugs use oppcircle_list_categories, and for country/funding/other tag slugs use oppcircle_list_tags.

Fetch the full details of a single opportunity by numeric id, slug, or its public url. Returns the complete description (eligibility, benefits, how to apply, deadlines, official links) converted to readable text, plus its type, tags, country/funding tags, dates and featured image. Provide exactly one of id / slug / url.

Return the most recently posted (non-expired) opportunities, newest first. Optionally restrict to one type. A convenience shortcut over oppcircle_search for 'what's new'.

List the opportunity type categories with their slugs and how many opportunities each holds. Use these slugs as the type filter in oppcircle_search / oppcircle_latest. Optionally filter the list by a search term.

Search the tag taxonomy (13k+ tags) to discover valid slugs for the country, funding, and tags filters of oppcircle_search. Tags encode countries (usa, europe, uk), funding (fully-funded, paid), study level (phd-scholarship, masters-scholarship), host organizations (un-program, fao) and deadline months. Provide a search term for best results; results are ordered by popularity.

High-level snapshot of the Opportunities Circle catalog: site info, total active opportunities, and the breakdown of opportunity types by count. Good first call to understand what's available and which type slugs to use.