Add limit group member

PUT
/providers/{providerID}/limit-groups/{groupID}/members/{participantID}

Add a participant to a limit group. Returns 201 with the membership when the membership is created. Idempotent: adding a current member returns 200 with the existing membership.

A malformed providerID returns 400.

Auth: API key or bearer token. Scoped to the calling provider.

Request
cURL
curl -X PUT https://api.moov.money/providers/{providerID}/limit-groups/{groupID}/members/{participantID} \
  -u "$MOOV_API_KEY_ID:$MOOV_API_KEY_SECRET" \
  -H "X-Moov-Version: v2026.10.00"
Responses
200 201 400 401 403 404
The request completed successfully.
{
  "member": {
    "addedOn": "2026-08-31T12:00:00Z",
    "externalID": "customer-abc-123"
  }
}
The resource was successfully created.
{
  "member": {
    "addedOn": "2026-08-31T12:00:00Z",
    "externalID": "customer-abc-123"
  }
}
Malformed request: the body or headers failed validation.
Response body application/problem+json
RFC 9457 Problem Details error body, served as application/problem+json. From v2026.10.00, every error response that has a body uses this schema.

type

string required
URI that tells you which problem occurred. Branch on this value; it never changes. Moov problem types look like https://api.moov.money/errors#<code> (for example invalid-request, idempotency-key-reused, or idempotency-request-in-progress). Treat the value as an opaque constant and do not fetch it. about:blank means the HTTP status code says everything there is to know.

title

string required
Short human-readable name of the problem type. Fixed per type; defaults to the HTTP status text.

status

integer<int32> required
The HTTP status code of this response.

detail

string
Human-readable explanation of this specific occurrence.

instance

string
URI reference that identifies this specific occurrence.

errors

array<object>
The request-body fields that failed validation. Present on validation errors only.
Show child attributes

errors[]

pointer

string required
RFC 6901 JSON Pointer to the field, using the public JSON field names. If the field is missing, the pointer shows where it belongs.

detail

string required
What is wrong with the field.
Authentication missing, invalid, or insufficient.
Authentication present but the action is forbidden for this principal/claim.
The requested resource was not found.

Headers

X-Moov-Version

string
Set this header to the API version being targeted (e.g. v2026.10.00). When omitted, the server applies its default version.

Path parameters

providerID

string required
Your provider account ID.

groupID

string required
Identifier of the limit group.

participantID

string required
The participant’s participantID, or your externalID for them. Both resolve to the same participant.

Response

Response envelope for add limit group member; the membership is nested under member.

member

object required
The group membership.
Show child attributes

member

externalID

string required
Your identifier for the participant.

addedOn

string<date-time> required
When the participant was added to the group.