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On-Call API › Overrides

Create an override

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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-dev.evohub.io/mcp

Add to CursorAdd to VS Code

Claude Code

claude mcp add --transport http evohub-docs-docs https://docs-dev.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-docs": {
      "command": "npx",
      "args": [
        "-y",
        "mcp-remote",
        "https://docs-dev.evohub.io/mcp"
      ]
    }
  }
}

Cursor — ~/.cursor/mcp.json

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

VS Code — .vscode/mcp.json

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

llms.txtllms-full.txt

POST/api/v1/schedules/{id}/overrides

Puts override_user_id on call on this schedule between start_time and end_time, in place of whoever the layers would have chosen. user_id optionally records whom they are covering. The covering person must be a member of the organization who can respond to alerts.

Permission (API-key scope): oncall:schedule:write.

Authorization

Any one of:

Parameters

Path parameters

  • id string required
    The schedule's id.
    Example: 5b1c7d2e-8f3a-4b9c-a0d1-e2f3a4b5c6d7

Request body required

Content type: application/json

Type: ScheduleOverrideCreate

  • override_user_id string required
  • start_time string (date-time) required
  • end_time string (date-time) required
  • user_id string
    Whom they cover.
  • reason string

Responses

201

The override.

Content type: application/json

Type: object

  • data ScheduleOverride required
    Show ScheduleOverride properties
    • id string
    • schedule_id string
    • user_id string
      Whom the override covers, when recorded.
    • override_user_id string
      Who is on call instead.
    • start_time string (date-time)
    • end_time string (date-time)
    • reason string
    • created_at string (date-time)
  • success boolean required
    Value: true

400

The body is not JSON (INVALID_BODY), or override_user_id, start_time or end_time is missing or a time is not RFC 3339 (VALIDATION_FAILED).

Content type: application/json

Type: ValidationError

  • error object required
    • code string required
      Value: VALIDATION_FAILED
    • message string required
    • details array of object required
      • field string
      • message string

401

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

Content type: application/json

Type: Error

  • error object required
    • code string required
      Machine-readable code. Branch on this.
    • message string required
      Human-readable explanation.

403

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

Content type: application/json

Type: Error

  • error object required
    • code string required
      Machine-readable code. Branch on this.
    • message string required
      Human-readable explanation.

404

No such schedule (NOT_FOUND), or the person is not a member of the organization (NOT_A_MEMBER).

Content type: application/json

Type: Error

  • error object required
    • code string required
      Machine-readable code. Branch on this.
    • message string required
      Human-readable explanation.

422

The person cannot respond to alerts: they do not hold oncall:alert:respond (CANNOT_RESPOND).

Content type: application/json

Type: Error

  • error object required
    • code string required
      Machine-readable code. Branch on this.
    • message string required
      Human-readable explanation.

429

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

Headers

  • Retry-After integer
    Seconds to wait.

Content type: application/json

Type: Error

  • error object required
    • code string required
      Machine-readable code. Branch on this.
    • message string required
      Human-readable explanation.

500

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

Content type: application/json

Type: Error

  • error object required
    • code string required
      Machine-readable code. Branch on this.
    • message string required
      Human-readable explanation.

503

Whether the person may be paged could not be checked right now; nothing was changed (MEMBER_CHECK_UNAVAILABLE). Retry shortly.

Content type: application/json

Type: Error

  • error object required
    • code string required
      Machine-readable code. Branch on this.
    • message string required
      Human-readable explanation.

Example request

curl -X POST 'https://evohub.io/api/v1/schedules/5b1c7d2e-8f3a-4b9c-a0d1-e2f3a4b5c6d7/overrides' \
  -H 'Content-Type: application/json' \
  -H 'Authorization: Bearer <TOKEN>' \
  -d '{
  "reason": "Covering while Ayşe travels",
  "user_id": "0b8e6c1a-2f4d-4e9b-8a7c-3d5e6f708192",
  "end_time": "2026-10-13T09:00:00Z",
  "start_time": "2026-10-12T18:00:00Z",
  "override_user_id": "4c2a9e7b-1d3f-4a8c-b6e5-9f0a1b2c3d4e"
}'

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