API Reference

Create a guardrail assignment

Attach one guardrail to a Standard API key or an account member.

View Markdown

Attach one guardrail to a Standard API key or an account member.

POST /api/v1/guardrail_assignments

Base URL: https://runapi.ai
API version: v1
Authentication: Authorization: Bearer YOUR_MANAGEMENT_API_KEY
Authorization: Account admins can assign any eligible target. Non-admin users can assign only their own Standard API keys.

Request

JSON body

Send values only in the listed request location.

JSON body3 fields

account_user_idstring

Optional

Account-member prefix ID. This target requires an account admin.

api_token_idstring

Optional

Standard API key prefix ID. Provide exactly one target ID.

guardrail_idstring

Required

Guardrail prefix ID.

Success response

HTTP 201

POST /api/v1/guardrail_assignments

JSON

{
  "account_user_id": null,
  "api_token_id": "token_123",
  "created_at": "2026-07-27T10:00:00.000Z",
  "guardrail_id": "guardrail_123",
  "id": "guardrail_assignment_123"
}

Error response (401)

HTTP 401

JSON

{
  "error": "Authentication required"
}

Error response (403)

HTTP 403

JSON

{
  "error": "Management API key required"
}

Error response (400)

HTTP 400

JSON

{
  "error": "page must be an integer"
}

Error response (403)

HTTP 403

JSON

{
  "error": "Forbidden"
}

Error response (404)

HTTP 404

JSON

{
  "error": "Resource not found"
}

Error response (422)

HTTP 422

JSON

{
  "errors": {
    "base": [
      "Validation failed"
    ]
  }
}

cURL example

CURL

curl -X POST https://runapi.ai/api/v1/guardrail_assignments \
  -H 'Authorization: Bearer YOUR_MANAGEMENT_API_KEY' \
  -H 'Content-Type: application/json' \
  -d '{"guardrail_id":"guardrail_123","api_token_id":"token_123"}'

Create a guardrail assignment

Endpoint

Request

Success response

Error response (401)

Error response (403)

Error response (400)

Error response (403)

Error response (404)

Error response (422)

cURL example

Related reference