Add a contact to a client

POST/v1/clients/{clientId}/contacts/{contactId}

Path parameters

clientId string required

An opaque client resource identifier.

Example01JQ2T5Y5Q3R8W9N6M4K2H7P1C

contactId string required

An opaque contact resource identifier.

Example01JQ2T5Y5Q3R8W9N6M4K2H7P1E

Body parameters

application/json · required

This object has no fields.

Headers

authorization string required

Bearer workspace API key.

ExampleBearer $NQD_API_KEY

workspace-id string required

Workspace scope for the request. Required for workspace operations and must belong to the authenticated identity.

Minimum length: 1 character. · Maximum length: 128 characters.

Example01JQ2T5Y5Q3R8W9N6M4K2H7P1A

Response

200Success

Response headers

x-request-id string

Correlation identifier returned with every response for support and request tracing.

Example550e8400-e29b-41d4-a716-446655440000

data object

Returned records. Collections and batches use an array; single records use an object.

ShowHide 15 properties

data.id string

Opaque identifier for this resource or reference.

Example01JQ2T5Y5Q3R8W9N6M4K2H7P1C

data.clientId string

Optional client relationship for this contact. A contact may also reference a vendor; when both are provided they must resolve to the same party. A null clientId alone does not mean workspace ownership when vendorId is set.

Examplenull

data.vendorId string

Optional vendor relationship for this contact. A contact may also reference a client; when both are provided they must resolve to the same party. Both relationship IDs null means the current workspace owns the contact.

Examplenull

data.name string

Display name of the record.

ExampleNQD record

data.description string

Optional human-readable description of the record.

ExampleConsulting services for January 2026

data.email string[]

Email address associated with the identity.

Example1 item

data.phone string[]

phone for this client.

Example1 item

data.website string[]

website for this client.

Example1 item

data.position string[]

position for this client.

Example1 item

data.bankName string

bank name for this client.

ExampleNQD Bank

data.iban string

iban for this client.

ExampleSA0380000000608010167519

data.notes string

Notes attached to the record.

ExampleConsulting services

data.tags string[] nullable

Tags assigned to the record.

Example1 item

data.createdAt string

ISO 8601 timestamp for the authored or payment event. Recurring records preserve their scheduled occurrence.

Example2026-01-15T12:00:00.000Z

data.updatedAt string

Timestamp used for stale-edit protection. Preserve the server value when updating.

Example2026-01-15T12:00:00.000Z

Possible errors

400 Invalid request

Response headers

x-request-id string

Correlation identifier returned with every response for support and request tracing.

Example550e8400-e29b-41d4-a716-446655440000

error object

Error details returned for a failed request.

ShowHide 4 properties

error.code string

Stable machine-readable error or resource code.

Exampleinvalid_input

error.message string

Human-readable explanation of the result or error.

ExampleThe request could not be validated.

error.requestId string

Correlation identifier for support and request tracing.

Example550e8400-e29b-41d4-a716-446655440000

error.details object nullable

Additional structured details about the result or error.

ShowHide 1 property

error.details.issues object[]

Structured field issues returned when request validation fails.

ShowHide 3 properties

error.details.issues[].path string | number[]

Field path where the validation issue occurred.

One of: string alternative 1, number alternative 2

Example0 items

error.details.issues[].reason string

Machine-readable reason for the validation issue.

Allowed values: "expected_type", "required", "unexpected_property", "invalid_value", "invalid_json", "invalid_query", "unsupported_media_type", "body_too_large", "body_timeout", "conflicting_scope", "missing_header", "concurrency_required", "invalid_resource_id", "invalid_request"

Exampleinvalid_request

error.details.issues[].code string nullable

Stable machine-readable error or resource code.

Exampleinvalid_input

{
  "error": {
    "code": "invalid_input",
    "message": "The request could not be validated.",
    "requestId": "550e8400-e29b-41d4-a716-446655440000",
    "details": {
      "issues": [
        {
          "path": [],
          "reason": "invalid_request"
        }
      ]
    }
  }
}

View raw OpenAPI operation

Use the machine-readable contract for client generation and payload validation.

Open OpenAPI contract ↗