List the claude.ai / Claude Cowork projects on this account, each tagged with the organization that owns it. Use this to find a project uuid.

Read one project: its name, description, and instructions. Only this tool returns the instructions — list_projects does not carry them.

Create a project. organization_id is needed only when the account belongs to several organizations, and the error will name them if so. A private project is visible to you alone; a normal one is visible to the whole organization.

Change a project's name, description, or instructions. Only the fields you pass are touched; the rest keep their current values. Pass an empty string to clear one.

Delete a project and everything in it. There is no server-side undo, so confirm_name must be set to the project's exact current name. Every text document and every file uploaded through the web UI is copied to the local backup directory first; if any of that fails, nothing is deleted. An upload with no downloadable original, such as an image, or one the listing gives no size for, blocks the deletion until it is removed in the web UI.

List the text documents in a project, and under uploaded_files the files uploaded through the web UI, such as PDFs, which count toward knowledge but are not documents: pull_documents copies them, push_documents sends a PDF, PNG, JPEG, GIF, or WebP file up as one, and delete_project backs them up, but nothing here can compact one. knowledge reports the project's size against its search threshold and its maximum. duplicate_file_names flags names held by more than one document, which happens when a save is interrupted; the next write_document with overwrite=true cleans them up. Relay any warning in the result to the user verbatim.

Read one document, by file name or uuid. If several documents share the name, the newest is returned and warning names the others; relay any warning to the user verbatim.

Create a document, or replace one with overwrite=true. The previous content is backed up locally before any replacement. Pass expected_uuid (from read_document) to refuse the write if a teammate has saved since you read it. Refused when the write would grow the project past its search threshold or its maximum, naming the documents most worth compacting and the largest uploaded files, which only the web UI can remove; allow_search_mode=true accepts the threshold, never the maximum. Relay any warning in the result to the user verbatim — it flags a leftover copy or a file name with no extension.

Rename a document, by uuid or by an unambiguous file name. The content is re-created under the new name before the original is deleted, with local backups first, so nothing is lost midway. A new name already in use is refused unless overwrite=true, which replaces its holder (backed up first). Relay any warning in the result to the user verbatim.

Delete a document, by uuid or by an unambiguous file name. The content is backed up locally first. A name shared by several documents is refused: pass the uuid to say which one.

Copy the project's documents and uploaded files into a local folder. Uploads such as PDFs come down as bytes, and each result row says which kind it was. Local files that differ are kept, not overwritten, unless overwrite_local=true.

Send a local folder's files into the project: a PDF, PNG, JPEG, GIF, or WebP file goes up as an uploaded file, the way the web UI adds one, and every other file, other image formats included, becomes a text document and must be UTF-8. The default pattern *.md matches no upload, so pass pattern='*' to send everything in the folder. Unchanged files are skipped, differing ones need overwrite=true (the replaced version is backed up locally first), and nothing remote that is missing locally is ever deleted. An uploaded image already in the project is left alone, since it offers no original to compare against or back up. Use dry_run=true to preview, including where the push would stop; that stop is an estimate, since a preview writes nothing to measure, and it cannot count uploads at all. Stops at the first file that would grow the project past its search threshold or its maximum (allow_search_mode=true accepts the threshold); files already pushed stay. Relay any warning in the result to the user verbatim.

List Cowork scheduled tasks. Pass project_id for one project's tasks, or nothing for every task on the account. Schedules are cron expressions in UTC; a task with none runs only when started by hand. If the tasks cannot be matched to the project, every task in the organization is listed and warning says so; relay any warning to the user verbatim.

Read one scheduled task by its id, including the prompt it will send.

Create a scheduled task in a project. Omit cron_expression for a task that only runs when started by hand. cron_expression is five fields in UTC, not local time — '0 0 * * 1' is Monday 00:00 UTC. The answer carries next_run_at so the schedule can be checked before it matters. Relay any warning in the result to the user verbatim — it flags a model id claude.ai accepted without checking.

Change a scheduled task. Only the fields you pass are touched. Pass enabled=false to pause a task without losing its prompt or schedule, which is almost always better than deleting it. A schedule cannot be removed here — pause it instead. Relay any warning in the result to the user verbatim.

Delete a scheduled task. Unlike documents, nothing is backed up first — a task is a prompt and a schedule, not content — so prefer update_scheduled_task with enabled=false if you only want it to stop running. Relay any warning in the result to the user verbatim — it reports a task that was already gone.