---
title: "Create a card on a board"
method: POST
path: "/boards/{board_id}/cards"
tags: ["Boards"]
---

# Create a card on a board

`POST /boards/{board_id}/cards`

## Request

- Base URL: `https://api-docs.jackhamr.ai` (the document declares no server; this is the origin it was published from)
- URL: `https://api-docs.jackhamr.ai/boards/{board_id}/cards`
- Auth: none declared

Create a new card on the board. The card starts in ``backlog``.

A virtual board is materialized into a real board on its first card.

## Path parameters

- `board_id` string, required

## Request body

- CardCreate: Request body for ``POST /api/v1/boards/{id}/cards``.
  - `title` string, required
  - `description` string, nullable
  - `owner` string
  - `assignee_agent_id` string, nullable
  - `priority` integer
  - `stages` string[], nullable
  - `execution_mode` string, nullable
  - `model_id` string, nullable
  - `clone_idle_stop_minutes` integer, nullable
  - `clone_stop_on_done` boolean, nullable

## Response `201`

Successful Response

- CardOut: A board card.
  - `id` string, required
  - `board_id` string, required
  - `org_task_number` integer, nullable
  - `title` string, required
  - `description` string, nullable
  - `column_key` string
  - `state` string
  - `owner` string
  - `skipped_count` integer
  - `priority` integer
  - `stages` string[], nullable
  - `assignee` AgentRef: Compact agent reference for team rosters / assignee chips.
    - `id` string, required
    - `name` string, required
    - `status` string, nullable
    - `clone_of_agent_id` string, nullable
  - `execution_mode` string, nullable
  - `model_id` string, nullable
  - `clone_idle_stop_minutes` integer, nullable
  - `clone_stop_on_done` boolean, nullable
  - `pipeline_run_id` string, nullable
  - `chat_session_id` string, nullable
  - `created_by` string, nullable
  - `comment_count` integer
  - `attachment_count` integer
  - `ready_at` string, date-time, nullable
  - `completed_at` string, date-time, nullable
  - `archived_at` string, date-time, nullable
  - `created_at` string, date-time, nullable
  - `updated_at` string, date-time, nullable
  - `is_projected` boolean

## Other responses

- `422`: Validation Error

---

[API](https://skmtc.dev/jackhamr/apis/jackhamr-api.md) · [All operations](https://skmtc.dev/jackhamr/apis/jackhamr-api/llms.txt) · [OpenAPI document](https://skmtc.dev/jackhamr/apis/jackhamr-api/revisions/f75d221481d8?raw)