Check whether a code snippet duplicates code that already exists in the scanned project. Use it before writing or committing a function, class or block, to find the existing copy you should reuse instead. Detection is token-based with the server's --min-tokens / --min-lines thresholds: a snippet shorter than the threshold returns count 0 with a 'note' explaining why. Returns {format, count, returned, duplications[]} where each duplication has 'file', 'fileStartLine', 'fileEndLine', 'snippetStartLine', 'snippetEndLine', 'tokens' and 'kind' (exact, renamed or similar), biggest match first. With 'similarity' below 1, the response also carries 'similar[]' and 'similarCount': project functions whose syntax-tree structure resembles each function in the snippet (JavaScript/TypeScript only), each with 'file', 'name', line ranges and a 'similarity' ratio. Does not modify the project or the scan; the snippet is compared against the last scan, so call check_current_directory first if files changed.

List every clone from the last scan that involves one file, so you know which other files share code with it. Use it before refactoring, splitting or deleting a file, or after editing it (re-scan first with check_current_directory). Returns {file, clones, returned, duplications[]} where each duplication has 'format', 'fileA', 'startA', 'endA', 'fileB', 'startB', 'endB', 'lines', 'tokens' and 'kind', biggest clone first; the requested file may appear as fileA or fileB. A path that was not part of the scan returns clones 0. Read-only.

Report the duplication statistics of the last scan: for the whole project and per format, the number of files, lines and tokens analyzed, the number of clones, and the duplicated lines and tokens with their percentages. Use it to judge overall duplication or to compare before and after a refactoring (call check_current_directory in between). Takes no arguments and is read-only; it reflects the last scan, not the files on disk right now.

Re-scan the paths the server was started with and return the fresh clone list and counts. Use it after creating, editing or deleting files, so that check_duplication, get_file_clones and get_statistics answer from current content. Returns {files, clones, returned, duplications[]} with the same duplication shape as get_file_clones, biggest first. Reads the filesystem only; it never writes. The scan is synchronous and can take a few seconds on large projects; results replace the previous scan entirely.