Which trials are open for you, close to home?

How to connect

In Claude, open Customize, then Connectors, find Mēdota in the directory and connect it. There is no account and no sign-in.

Mēdota works wherever Claude offers connectors: on the web, on the desktop and in the Claude apps for iPhone and Android, on every Claude plan, the free one included.

Other assistants that support MCP connectors can use the same address: mcp.medota.eu/mcp

What it covers

• Trials from ClinicalTrials.gov, the EU Clinical Trials Information System (CTIS) and the German Clinical Trials Register (DRKS, run by BfArM), refreshed every night.
• A trial is listed for a country only when it is recruiting and at least one of its sites in that country is recruiting.
• ClinicalTrials.gov gives a recruiting status for each site. The EU and German registers give it for each country only, so their sites are shown as places where the trial runs, without a status of their own. Where ClinicalTrials.gov lists sites in a country, its statuses are used.
• A trial listed in more than one register appears once when Mēdota can confirm it is the same trial, with links to each register. If that cannot be confirmed, both entries stay.
• Every trial carries a link to its official record, the date its sponsor last updated that record and the date Mēdota last checked it.
• German register records from before 2025 show the title and a link only, as the register's terms require.
• Ask what is new since a date to see trials that opened, changed status or added a site.

The three tools

Find recruiting trials. Lists trials that are recruiting for a condition and have at least one recruiting site in the country you name. Each trial comes with its register number, official title, phase, sponsor, the recruiting sites in that country, a short plain-language explanation, links to every register that lists it, the date the sponsor last updated the record and the date Mēdota last checked it.

“Which trials for Parkinson's disease are recruiting in Sweden?”

Explain one trial. Takes a register number and returns the facts copied from the register (status, phase, sponsor, dates, countries and each site with its recruiting status), a plain-language explanation of what the trial tests and, in general terms, which patients it studies, and links to every register that lists it.

“Explain this trial in plain words: NCT06312176”

What's new for a condition. Shows what has changed since a date for trials studying a condition: trials that started recruiting, trials whose recruiting status changed and trials that added a recruiting site, each with the date and a link to the register record.

“What is new in breast cancer trials in Germany since 1 October?”

How conditions are named

You can ask in your own words and in your own language. Claude passes the condition to Mēdota as its standard English medical term from MeSH, the list of medical terms kept by the U.S. National Library of Medicine, for example "Parkinson Disease" or "Breast Neoplasms". Most rare diseases have their own MeSH name too.

If a term is not recognised, Mēdota sends back the closest standard terms, and Claude asks again with the right one.

When a register words a condition in its own way, AI reads that record's title and condition field each night and names the MeSH term. Mēdota uses it only when it is a valid MeSH term.

When a status may be out of date

Registers rely on sponsors to keep their records current. When a trial still says it is recruiting but a date in its record has passed, Mēdota says so, for example: "Data collection for this trial was planned to finish on 1 March 2026. Its recruiting status may be out of date. Check with the trial team before you rely on it."

The same note appears when the sponsor has not updated the record for more than two years; for ClinicalTrials.gov already when the sponsor has not confirmed the status for a year.

Trials with such a note are listed after the others. None are left out.

Sources and credit

• ClinicalTrials.gov, U.S. National Library of Medicine.
• EU Clinical Trials Information System (CTIS), European Medicines Agency.
• German Clinical Trials Register (DRKS), run by BfArM, Germany's federal medicines agency. Records registered or updated from 2025 are published under the Creative Commons Attribution 4.0 licence; older records are shown as title and link only.
• Condition terms: Medical Subject Headings (MeSH) 2026, U.S. National Library of Medicine.

Every result carries this credit line: "Sources: ClinicalTrials.gov; EU CTIS; German Clinical Trials Register (DRKS), BfArM. Data obtained [date]. Condition terms: MeSH 2026, U.S. National Library of Medicine."

The plain-language explanations are written with the help of AI, from the register's own text only: each night for trials recruiting in Europe, and for any other trial the first time someone asks about it, and then kept. Each is checked against the record in a second, separate step. If that check finds anything the record does not support, the explanation is held back and the trial shows its title and register link.

Mēdota is independent. It is not endorsed by any of these registers or by the U.S. National Library of Medicine.

Questions and errors

If you find an error or have a question, please write to contact@medota.eu.