0n3
MCP servers · 0nTask · connector · GPT action

Connect ChatGPT to 0nTask

One line gives ChatGPT your 0nTask account as tools: 12 endpoints, tasks, webhooks, work queue, called with your own connection. No key in the prompt, a receipt for every call, revoke ChatGPT's access alone any time.

Get the line for ChatGPTConnect 0nTask first

Three steps

  1. Create a free 0n3 account and connect 0nTask. Paste a key or sign in; it lands in your vault, encrypted.
  2. Install 0n3 into ChatGPT. A custom connector in Developer mode, or an Action on a custom GPT from the OpenAPI spec.
  3. Ask ChatGPT: whoami. Then: "List tasks in 0nTask".
Custom connector (needs Developer mode)
  1. Settings → Connectors (or Apps) → Advanced → Developer mode on
  2. Create → name 0n3 · MCP server URL https://0n3.app/mcp · Authentication: OAuth
  3. Finish the sign-in with your 0n account
  4. Enable the connector in a chat and ask: "whoami"

ChatGPT connectors cannot send a static header, so 0n3 signs you in through its OAuth door (dynamic client registration is on).

The line above carries a placeholder; 0n3.app/install mints a real key named for ChatGPT and fills it in.

What ChatGPT can then do in 0nTask

Tasks · Full task CRUD6
List tasksGET /tasks
Create a taskPOST /tasks
Update a taskPATCH /tasks
Delete a taskDELETE /tasks
Claim a next taskPOST /mcp
Complete a taskPOST /mcp
Webhooks · Outbound event webhooks0
Outbound event webhooks
Work queue · Work the tasks assigned to the AI, with leases and honest completion0
Work the tasks assigned to the AI, with leases and honest completion
More · Everything else this app exposes.6
List projectsGET /projects
List clientsGET /clients
Quick addGET /quick
Get a briefingPOST /mcp
Report a progressPOST /mcp
SkillGET /skill

0nTask in other AI clients

Claude Code + 0nTaskMCP server + skillClaude (desktop & claude.ai) + 0nTaskconnectorCodex CLI + 0nTaskMCP serverGemini CLI + 0nTaskMCP serverCursor + 0nTaskMCP serverVS Code (Copilot) + 0nTaskMCP serverWindsurf + 0nTaskMCP server

ChatGPT with other apps

Hostinger363 endpointsTelegram132 endpointsPipedrive95 endpointsResend67 endpointsSquare57 endpointsLinkedIn50 endpointsSlack45 endpointsFigma32 endpointsCloudConvert32 endpointseBay25 endpointsQuickBooks21 endpointsCloudflare21 endpoints