Search ClinicalTrials.gov for trials matching a condition. Returns a ranked list with status, phase, sponsor, site count, and a brief summary. WITHDRAWN and TERMINATED trials are excluded by default — pass status= to override. Results are ordered with RECRUITING trials first.

Get a full structured summary of one clinical trial by NCT ID. Returns: overview, what's being studied, verbatim eligibility criteria, site locations, and whether results have been posted. NCT ID hyperlink appears at the top and bottom for easy verification.

Compare 2 to 5 clinical trials side by side. Produces structured tables for design, timeline, locations, endpoints, and eligibility criteria. Use compare_on to focus on one category.

Fetch posted results for a clinical trial: participant flow, baseline characteristics, primary and secondary outcomes, and adverse events. Handles 4 cases: results posted, trial ongoing, completed but no results posted, and NCT ID not found. Adverse events default to serious events (Grade 3+) only.

Find actively recruiting trials for a condition near a location. Results are grouped by location ring: trials in the queried city first, then elsewhere in the country. Location is city/country level — CT.gov has no GPS radius data. IMPORTANT: filtered by overall trial status, not individual site status. A site in your city may still show 'Not yet recruiting' even if the trial is recruiting globally. Always verify the specific site status at clinicaltrials.gov.