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Add or remove a reaction

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Connect to Cursor / VS Code / ClaudeSearch and read these docs from your AI tool (MCP server)

MCP server URL

https://docs.evohub.io/mcp

Add to CursorAdd to VS Code

Claude Code

claude mcp add --transport http evohub-docs https://docs.evohub.io/mcp

Claude (claude.ai and Claude Desktop): Settings → Connectors → Add custom connector, and paste the URL above.

Claude Desktop — claude_desktop_config.json

{
  "mcpServers": {
    "evohub-docs": {
      "command": "npx",
      "args": [
        "-y",
        "mcp-remote",
        "https://docs.evohub.io/mcp"
      ]
    }
  }
}

Cursor — ~/.cursor/mcp.json

{
  "mcpServers": {
    "evohub-docs": {
      "url": "https://docs.evohub.io/mcp"
    }
  }
}

VS Code — .vscode/mcp.json

{
  "servers": {
    "evohub-docs": {
      "type": "http",
      "url": "https://docs.evohub.io/mcp"
    }
  }
}

llms.txtllms-full.txt

POST/api/v1/retro/boards/{boardID}/cards/{cardID}/reactions

Toggles the caller's reaction with one emoji on a card: adds it if the caller has not reacted with that emoji, removes it if they have. added says which happened. reactions is the card's reactions afterwards, most used first (reacted is not filled in here), or null when none are left. The board must be active.

Requires the retro:card:write scope.

Authorization

Any one of:

Parameters

Path parameters

  • boardID string required
    The board's ID.
    Example: brd_3f9a1c7e2b8d4a60
  • cardID string required
    The card's ID.
    Example: crd_8d0c4b6e1a9f2357

Request body required

Content type: application/json

Type: object

  • emoji string required
    The emoji.

Responses

200

The reaction was toggled.

Content type: application/json

Type: object

  • success boolean
  • data object
    • added boolean
      true if the reaction was added, false if it was removed.
    • reactions array of Reaction | null
      Show Reaction properties
      • emoji string
      • count integer
      • reacted boolean
        Whether the caller reacted with this emoji.

400

The body is not JSON (INVALID_BODY), or emoji is missing or blank (MISSING_EMOJI).

Content type: application/json

Type: Error

  • success boolean
    Sent by Retro itself; refusals before the request reaches Retro (401, 429) carry only error.
    Value: false
  • error object required
    • code string required
      Example: NOT_FOUND
    • message string required
      Example: board not found
    • request_id string

401

No API key was sent, or it is unknown, revoked or expired (UNAUTHORIZED).

Content type: application/json

Type: Error

  • success boolean
    Sent by Retro itself; refusals before the request reaches Retro (401, 429) carry only error.
    Value: false
  • error object required
    • code string required
      Example: NOT_FOUND
    • message string required
      Example: board not found
    • request_id string

403

The key lacks the scope this endpoint needs (FORBIDDEN).

Content type: application/json

Type: Error

  • success boolean
    Sent by Retro itself; refusals before the request reaches Retro (401, 429) carry only error.
    Value: false
  • error object required
    • code string required
      Example: NOT_FOUND
    • message string required
      Example: board not found
    • request_id string

404

The board is not one the caller can see (NOT_FOUND), or the card is not on it (CARD_NOT_FOUND).

Content type: application/json

Type: Error

  • success boolean
    Sent by Retro itself; refusals before the request reaches Retro (401, 429) carry only error.
    Value: false
  • error object required
    • code string required
      Example: NOT_FOUND
    • message string required
      Example: board not found
    • request_id string

409

The board is closed and its content cannot change (BOARD_CLOSED). Reopen it first.

Content type: application/json

Type: Error

  • success boolean
    Sent by Retro itself; refusals before the request reaches Retro (401, 429) carry only error.
    Value: false
  • error object required
    • code string required
      Example: NOT_FOUND
    • message string required
      Example: board not found
    • request_id string

429

Too many requests (RATE_LIMITED). Wait for Retry-After seconds.

Headers

  • Retry-After integer
    Seconds to wait before retrying.

Content type: application/json

Type: Error

  • success boolean
    Sent by Retro itself; refusals before the request reaches Retro (401, 429) carry only error.
    Value: false
  • error object required
    • code string required
      Example: NOT_FOUND
    • message string required
      Example: board not found
    • request_id string

500

Something went wrong on EvoHub's side (INTERNAL_ERROR). Retry later.

Content type: application/json

Type: Error

  • success boolean
    Sent by Retro itself; refusals before the request reaches Retro (401, 429) carry only error.
    Value: false
  • error object required
    • code string required
      Example: NOT_FOUND
    • message string required
      Example: board not found
    • request_id string

Example request

curl -X POST 'https://evohub.io/api/v1/retro/boards/brd_3f9a1c7e2b8d4a60/cards/crd_8d0c4b6e1a9f2357/reactions' \
  -H 'Content-Type: application/json' \
  -H 'Authorization: Bearer <TOKEN>' \
  -d '{
  "emoji": "🚀"
}'