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POST/v1/groupsbeta

Create a contact group

Needs
Create and edit contacts, tags, contact groups and custom fields (crm:write)
Plan
Any plan with API access
Limits
60 a minute per key
Dry run
Yes — every check runs with ?dry_run=true, nothing changes
Undo
Delete the group with Delete a contact group (its contacts are kept).

Creates a contact group. If a group with the same name exists (case does not matter), that one is returned with created: false, so calling twice is safe.

Add contacts to it with Add contacts to a group.

Try it

Body

Group name (any language).

One emoji shown next to the name, e.g. `⭐`.

Protects against doing it twice if you retry: a retry with the same key gets the first answer back instead of running again.

Test mode (dry run): nothing will change
Turns test mode off for this page only. It switches back when you leave the page.

Code and response

curl -X POST 'https://mcp.wa-api.cloud/v1/groups?dry_run=true' \
  -H "Authorization: Bearer $API_KEY" \
  -H 'Content-Type: application/json' \
  -H "Idempotency-Key: $(uuidgen)" \
  -d '{
  "name": "VIP customers",
  "emoji": "⭐"
}'

The code reads your key from $API_KEY.

Body

Body fields
FieldTypeWhat it is
namerequiredstringGroup name (any language).1–100 characters
emojistringOne emoji shown next to the name, e.g. ⭐.1–10 characters

Headers

Headers
FieldTypeWhat it is
AuthorizationrequiredheaderBearer $API_KEY — your API key.
Api-VersionheaderThe API version to use, e.g. 2026-10-01. Default: the version your key is pinned to.one of: 2026-10-01 · pattern ^\d{4}-\d{2}-\d{2}$
Idempotency-KeyheaderAny unique string (8–128 characters). A retry with the same key returns the first answer instead of running twice. Kept 24 hours.pattern ^[A-Za-z0-9._:-]+$ · 8–128 characters

Response 200

The group, and whether it was created.

Response fields
FieldTypeWhat it is
grouprequiredobject
idrequiredstring
namerequiredstring or null
emojirequiredstring or null
createdrequiredboolean
dry_runbooleantrue when this was a dry run: every check ran and nothing changed.

Errors

Errors are application/problem+json. Branch on code.

StatusCodeWhen
400invalid_input

A field is missing or has the wrong format. errors[] points at each field.

401unauthenticated

The Authorization header is missing, the key is unknown, expired or revoked.

403entitlement_required

The workspace's plan does not include API access (api_access).

403insufficient_scope

The key does not have the permission this operation needs.

409conflict

Also returned while a request with the same Idempotency-Key is still running.

429rate_limited

The key or workspace went over its rate limit. Wait for Retry-After seconds.

503upstream_unavailable

A service behind the API is briefly unavailable. Safe to retry with backoff.

504timeout

The change did not finish in time. Retry with the same Idempotency-Key: it never runs twice.

Examples

Create a VIP group

Request body

{
  "name": "VIP customers",
  "emoji": "⭐"
}

Response 200

{
  "group": {
    "id": "6",
    "name": "VIP customers",
    "emoji": "⭐"
  },
  "created": true
}

Operation path

The same operation is also at POST /v1/ops/crm_create_group, with every field in the JSON body.