[Illustration of the 1997 ETS-VII autonomous docking mission. Credit: JAXA]
With its SpaDex mission, India has demonstrated the ability to couple two satellites together in space without astronauts. You can read a brief discussion here:
https://www.cnn.com/2025/01/15/india/india-space-docking-attempt-intl-hnk/index.html
NOTE: that article is wrong about how many countries have demonstrated autonomous docking. It lists only the US, Russia and China as having accomplished this feat. However, Japan demonstrated it in 1997 with its highly successful Experimental Test Satellite VII (ETS-VII) demonstration, known as Kiku-7:
https://global.jaxa.jp/projects/sat/ets7/
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