The One Thing for AI assistants
The One Thing includes a secure remote MCP server. Connect it once, choose the permissions you are comfortable with, and let your assistant capture and complete tasks alongside you.
https://mcp.theonethingapp.com Connect in three steps
Any remote MCP client with OAuth support can connect. The exact button names vary by client, but the flow is the same.
Open your assistant’s MCP or connector settings and add https://mcp.theonethingapp.com as a remote server.
Your browser opens a secure authorisation page. Sign in with the same account you use in the app.
Approve read access, write access or both. You can revoke the connection later.
Two agent-friendly surfaces
Remote MCP connects an assistant to your account from anywhere. WebMCP gives an agent structured tools while this website is open in a supporting browser.
Claude, Codex and other OAuth-compatible clients can work with your personal task list without keeping this website open.
https://mcp.theonethingapp.comOn supporting agentic browsers, this website registers seven route-specific tools as a progressive enhancement: five structured reads and two explicit navigation actions.
get_product_overview get_download_links open_task_app list_journal_articles get_journal_article open_journal_article get_mcp_connection_details Marketing-site tools never access or change task data. Account-scoped task actions stay in the authenticated web app and remote OAuth MCP. Unsupported browsers ignore WebMCP cleanly. Learn more in the WebMCP specification or the Chrome implementation guide.
Less task admin
Ask your assistant to capture something before you forget it, tell you the current priority, review recent momentum or complete a task. Every action stays tied to your signed-in account and the permissions you approved.
Available tools
list_tasksReadSee active or completed tasks and their priority order.
get_taskReadRetrieve one task using its secure task ID.
get_completion_trendsReadSummarise recent completions, averages and streaks.
add_taskWriteCapture a new task without leaving the conversation.
update_taskWriteRename or reprioritise a task with Pro access.
complete_taskWriteMark an active task complete and move forward.
delete_taskDestructivePermanently delete one of your tasks.
What stays protected
The connection uses OAuth 2.1 with PKCE. Sign-in happens on The One Thing’s own secure authorisation page, and the client receives a revocable token—not your password.
User-scoped dataEvery read and action is restricted to the signed-in user.
Explicit permissionsRead and write scopes are shown before you approve access.
Destructive actions labelledTask deletion is explicitly marked destructive for supporting clients.
Same product rulesFree-plan limits and Pro-only editing still apply through MCP.
Ready to connect?
Add the endpoint in your MCP client, sign in and ask: “What is my one thing?”
https://mcp.theonethingapp.com Open The One Thing