---
title: "Export tasks as CSV"
method: GET
path: "/api/boards/{boardId}/tasks.csv"
tags: ["Reads"]
---

# Export tasks as CSV

`GET /api/boards/{boardId}/tasks.csv`

## Request

- Base URL: `https://cnvs.app`
- URL: `https://cnvs.app/api/boards/{boardId}/tasks.csv`
- Auth: none declared

Export a `todo`-mode board's columns + tasks as CSV — one row per task, RFC-4180 quoted. Header: `lane,column,name,priority,assignee,due_date,done,description`. `lane` is the title of the swimlane (row) the task's column sits in, falling back to the lane's 1-based row number (`1`, `2`, …) when that lane has no title. Mirrors the MCP `export_tasks` tool with `format: "csv"`. A `draw` board (no columns) still returns 200 with just the header row, so callers don't have to branch on mode first.

## Response `200`

CSV document.

## Other responses

- `400`: Invalid input (missing or malformed board id).
- `401`: Board is access-locked and the request did not carry a valid key. `lockMode` tells the client whether to prompt for a code or just disable write UI.
- `404`: Board does not exist or was deleted within the 30-day tombstone window.
- `429`: Rate limit exceeded. Standard REST/MCP: 60 requests/10s/board; valid X-Import-Token infrastructure tier: 600/10s/board; browser WebSocket always 60/10s/board. REST/MCP enforcement is soft per-isolate; WebSocket enforcement is strong per Durable Object.

---

[API](https://skmtc.dev/cnvs/apis/cnvs-app-http-api.md) · [All operations](https://skmtc.dev/cnvs/apis/cnvs-app-http-api/llms.txt) · [OpenAPI document](https://skmtc.dev/cnvs/apis/cnvs-app-http-api/revisions/c8f2c3b7ff90?raw)