Open Settings → Developer → Edit Config and add:

{
  "mcpServers": {
    "basecamp": {
      "command": "uvx",
      "args": ["basecamp-mcp-server"]
    }
  }
}

Quit Claude Desktop completely and reopen it. If it says it can't find uvx, use the full path that uvx basecamp-mcp-server config claude-desktop prints.

claude mcp add basecamp -- uvx basecamp-mcp-server

Add the same JSON as Claude Desktop to ~/.cursor/mcp.json (or .cursor/mcp.json in a project), then restart Cursor and check Settings → MCP.

Add to ~/.codex/config.toml:

[mcp_servers.basecamp]
command = "uvx"
args = ["basecamp-mcp-server"]

Run uvx basecamp-mcp-server as a local (stdio) MCP server. The JSON above works for most clients.

• create_project — Create a Basecamp project
• create_project_from_template — Start constructing a project from a Basecamp template
• create_template — Create a Basecamp project template
• get_assignable_people — Get all people who can have to-dos assigned to them
• get_people — Get people available in the authenticated Basecamp account
• get_person — Get one Basecamp person's profile
• get_pingable_people — Get Basecamp people who can be pinged
• get_project — Get one project's details, including its dock IDs
• get_project_construction — Get the status of a project being constructed from a template
• get_project_people — Get active people on a Basecamp project
• get_projects — List Basecamp projects. Returns a compact summary by default
• get_template — Get a Basecamp project template
• get_templates — List visible Basecamp project templates
• trash_project — Move a Basecamp project to the trash
• trash_template — Move a Basecamp project template to the trash
• update_project — Update a project's name, description, access policy, or date range
• update_project_people — Grant, revoke, or invite people on a Basecamp project
• update_template — Update a Basecamp project template

• archive_todo — Archive a todo item
• complete_todo — Mark a todo item as complete
• create_todo — Create a new todo item in a todo list
• create_todolist — Create a new todo list in a project
• create_todolist_group — Create a new group inside a todo list
• delete_todo — Move a todo item to the trash
• deprioritize_assignment — Remove an assignment from the authenticated user's Up Next list
• get_completed_assignments — Get the authenticated user's completed assignments
• get_due_assignments — Get the authenticated user's assignments by due-date scope
• get_my_assignments — Get the authenticated user's active assignments grouped by priority
• get_overdue_todos — Get overdue to-dos for the WHOLE ACCOUNT, grouped by how late they are
• get_person_assignments — Get all active, pending to-dos assigned to a specific person
• get_todo — Get a single todo item by its ID
• get_todolist — Get a specific todo list by ID
• get_todolist_groups — Get all groups in a todo list
• get_todolists — Get todo lists for a project
• get_todos — Get todos from a todo list
• prioritize_assignment — Add an assignment to the authenticated user's Up Next list
• reorder_priority — Move an assignment to a position in the authenticated user's Up Next list
• reposition_todo — Reposition a todo within its list, or move it to another list or group
• reposition_todolist_group — Reposition a todo list group to a new location within its list
• trash_todolist — Move a todo list to the trash
• uncomplete_todo — Mark a todo item as incomplete
• update_todo — Update an existing todo item
• update_todolist — Update an existing todo list

• create_comment — Create a comment on a Basecamp item
• create_draft_message — Create a draft message on a project's message board without publishing it
• create_message — Create a new message on a project's message board
• create_message_category — Create a message type/category
• delete_comment — Delete a comment by moving it to the project's trash (Basecamp has no hard delete)
• delete_message_category — Delete a message type/category
• get_comment — Get a specific comment by ID
• get_comments — Get comments for a Basecamp item
• get_forward — Get a specific forwarded email by ID
• get_forwards — Get all forwarded emails from a project's inbox
• get_inbox — Get the inbox for a project (for email forwards)
• get_inbox_replies — Get all replies to a forwarded email
• get_inbox_reply — Get a specific reply to a forwarded email
• get_message — Get a specific message by ID
• get_message_board — Get the message board for a project
• get_message_categories — Get message categories (types) for a project
• get_message_category — Get one message type/category
• get_messages — Get all messages from a project's message board
• pin_message — Pin a message to the top of its message board
• trash_forward — Move a forwarded email to trash
• unpin_message — Remove a message from the top of its message board
• update_comment — Update a comment's content
• update_message — Update one or more fields on a message
• update_message_category — Update a message type/category

• create_campfire_line — Create a plain-text line in a Basecamp campfire
• create_question — Create a question in a Basecamp automatic check-ins questionnaire
• delete_campfire_line — Permanently delete a line from a Basecamp campfire
• get_campfire_line — Get one line from a Basecamp campfire
• get_campfire_lines — Get recent messages from a Basecamp campfire (chat room)
• get_campfires — List campfire/chat rooms enabled in a project
• get_daily_check_ins — Get project's daily checking questionnaire
• get_question — Get one automatic check-in question
• get_question_answer — Get one automatic check-in answer
• get_question_answerers — List people who have answered a Basecamp automatic check-in question
• get_question_answers — Get answers on daily check-in question
• get_question_reminders — Get pending automatic check-in reminders for the authenticated user
• get_questionnaire — Get the automatic check-ins questionnaire for a project
• get_questions — Get questions from an automatic check-ins questionnaire
• pause_question — Pause a Basecamp automatic check-in question
• resume_question — Resume a paused Basecamp automatic check-in question
• update_question — Update selected fields on a Basecamp automatic check-in question

• create_lineup_marker — Create an account-wide Basecamp Lineup marker
• create_schedule_entry — Create a schedule entry in a Basecamp project's schedule
• delete_lineup_marker — Delete an account-wide Basecamp Lineup marker
• get_calendar — Get a Basecamp calendar by ID
• get_lineup_markers — List account-wide Basecamp Lineup markers
• get_schedule — Get the schedule for a Basecamp project
• get_schedule_entries — Get schedule entries for a Basecamp project
• get_schedule_entry — Get one schedule entry from a Basecamp project
• get_schedule_entry_occurrence — Get one occurrence of a recurring schedule entry
• get_upcoming_schedule — Get upcoming events and due work across all accessible projects
• update_calendar — Update a Basecamp calendar's display color
• update_lineup_marker — Update an account-wide Basecamp Lineup marker
• update_schedule_entry — Update one or more fields on a Basecamp schedule entry

• complete_card — Mark a card as complete
• complete_card_step — Mark a card step as complete
• create_card — Create a new card in a column
• create_card_step — Create a new step (sub-task) for a card
• create_card_table_wormhole — Create a cross-project card-table wormhole
• create_column — Create a new column in a card table
• delete_card_step — Delete a card step
• delete_card_table_wormhole — Delete a card-table wormhole
• get_card — Get details for a specific card
• get_card_step — Get details for a specific card step
• get_card_steps — Get all steps (sub-tasks) for a card
• get_card_table — Get the card table details for a project, including its columns
• get_card_tables — Get all card tables for a project
• get_cards — Get all cards in a column
• get_column — Get details for a specific column
• get_columns — Get all columns in a card table
• move_card — Move a card to a column or linked cross-project wormhole
• move_column — Move a column to a new position
• put_column_on_hold — Put a column on hold (freeze work)
• remove_column_hold — Remove hold from a column (unfreeze work)
• uncomplete_card — Mark a card as incomplete
• uncomplete_card_step — Mark a card step as incomplete
• unwatch_column — Unsubscribe from notifications for a column
• update_card — Update a card
• update_card_step — Update a card step
• update_card_table_wormhole — Change a card-table wormhole's destination column
• update_column — Update a column title
• update_column_color — Update a column color
• watch_column — Subscribe to notifications for changes in a column

• archive_recording — Archive any Basecamp recording
• create_attachment — Upload a file as an attachment
• create_document — Create a document in a vault
• create_draft_document — Create a draft document in a vault without publishing it
• create_upload_version — Replace an upload's file while preserving its recording URL
• download_attachment — Download an inline comment/message attachment as MCP content
• download_upload — Download the binary content of an upload (PDF, image, document, ...)
• get_document — Get a single document
• get_documents — List documents in a vault
• get_recordings — List every recording of one supported type in a project or account
• get_upload — Get details for a specific upload
• get_upload_versions — Get raw version events for an upload, optionally filtered by action
• get_uploads — List uploads in a project or vault
• get_vaults — List child vaults in a vault
• restore_recording — Restore an archived Basecamp recording to active status
• trash_document — Move a document to trash
• trash_recording — Move any Basecamp recording to the trash
• update_document — Update a document
• update_recording_visibility — Toggle client visibility for a Basecamp recording
• update_upload — Update an upload's metadata without replacing its file

• get_events — Get events for a recording
• get_everything_cards — Get filtered cards grouped by project across the whole account
• get_everything_checkins — Get automatic check-in answers across every accessible project
• get_everything_comments — Get recent comments across every accessible Basecamp project
• get_everything_files — Get files across every accessible project, optionally filtered by kind or creator
• get_everything_forwards — Get inbox forwards across every accessible Basecamp project
• get_everything_messages — Get recent messages across every accessible Basecamp project
• get_everything_todos — Get filtered to-dos grouped by project across the whole account
• get_person_timeline — Get timeline activity created by one Basecamp person
• get_project_timeline — Get recent activity within one Basecamp project
• get_search_metadata — Get the valid filters and content types for native Basecamp search
• get_timeline — Get recent activity across every accessible Basecamp project
• global_search — Search projects, todos and campfire messages across all projects
• search_basecamp — Search across Basecamp projects, todos, and messages
• search_recordings — Search Basecamp content, returning one page or at most limit results

• create_gauge_needle — Record a new progress update for a Basecamp project gauge
• create_timesheet_entry — Log time against a Basecamp timesheetable recording
• delete_gauge_needle — Permanently delete a Basecamp gauge needle
• delete_timesheet_entry — Permanently delete a Basecamp timesheet entry
• get_gauge_needle — Get one Basecamp gauge needle
• get_gauge_needles — Get a project's gauge history, newest first
• get_gauges — List project gauges across the authenticated Basecamp account
• get_hill_chart — Get the Basecamp Hill Chart for a to-do set
• get_project_hill_chart — Resolve and get a project's Basecamp Hill Chart
• get_project_timesheet — Get paginated timesheet entries for a Basecamp project
• get_recording_timesheet — Get paginated timesheet entries for a Basecamp recording
• get_timesheet_entry — Get one Basecamp timesheet entry
• get_timesheet_report — Get the account-wide, non-paginated Basecamp timesheet report
• toggle_gauge — Enable or disable a Basecamp project's gauge
• update_gauge_needle — Update the description of a Basecamp gauge needle
• update_hill_chart_settings — Track or untrack to-do lists on a Basecamp Hill Chart
• update_timesheet_entry — Update selected fields on a Basecamp timesheet entry

• create_bookmark — Bookmark a Basecamp recording for the authenticated user
• delete_bookmark — Remove a recording from the authenticated user's bookmarks
• get_bookmark_status — Get the authenticated user's bookmark status for a recording
• get_bubble_ups — Get the authenticated user's current and scheduled bubble-ups
• get_my_bookmarks — Get recordings bookmarked by the authenticated user
• get_my_drafts — Get unpublished drafts owned by the authenticated user
• get_my_note — Get the authenticated user's personal Basecamp note
• get_my_profile — Get the authenticated person's Basecamp profile
• get_notifications — Get the authenticated user's grouped Basecamp notification inbox
• get_subscription — Get subscription state and subscribers for a Basecamp recording
• mark_notifications_read — Mark notification readable SGIDs as read
• subscribe_to_recording — Subscribe the authenticated user to a Basecamp recording
• unsubscribe_from_recording — Unsubscribe the authenticated user from a Basecamp recording
• update_my_note — Replace the authenticated user's personal Basecamp note
• update_question_notification_settings — Update the authenticated user's automatic check-in notification settings
• update_subscription — Add or remove people from a recording's subscriber list

• create_dock_tool — Add a tool to a Basecamp project's dock
• create_webhook — Create a webhook
• delete_webhook — Delete a webhook
• disable_dock_tool — Hide a recording from a Basecamp project's dock without deleting it
• enable_dock_tool — Enable a recording in a Basecamp project's dock
• get_account — Get the Basecamp account associated with the current access token
• get_dock_tool — Get one Basecamp project dock tool
• get_webhook — Get one project webhook and its recent deliveries
• get_webhooks — List webhooks for a project
• remove_account_logo — Remove the account logo (administrator/owner only)
• reposition_dock_tool — Move a Basecamp project dock tool to a one-based position
• trash_dock_tool — Permanently delete a Basecamp dock tool and its content
• update_account_logo — Upload or replace the account logo (administrator/owner only)
• update_account_name — Rename the current Basecamp account (owner only)
• update_dock_tool — Rename a Basecamp project dock tool
• update_webhook — Update a project webhook destination, event types, or active state