Documentation version: 2026-09-18.3
Canonical: https://docs.creator.gg/tools/contacts_tags_add.md

# contacts_tags_add

Add existing or new tags to a contact without replacing their other tags. Reuse the same requestId when retrying an uncertain operation.

## Execution

Interface: Creators MCP tool at https://mcp.creator.gg/mcp. Do not construct a REST route from the tool name. The connection selects the workspace.

Effect: changes workspace data. requestId is required by the service (8–128 characters); reuse it only for the same action and arguments.

## Behavior and limits

Use returned IDs, inspect the result, and preserve unrelated records/preferences.

## Example arguments

Illustrative placeholders only. Replace IDs with values from this workspace, resolve sender/content/recipients, recalculate dates, and generate a new requestId for a new action.

```json
{
  "contactId": "contact_example",
  "tags": [
    "newsletter"
  ],
  "requestId": "example-contacts_tags_add-001"
}
```

## Input schema

Generated from the current executable Creators contract. Runtime rules in Behavior and limits and the linked guide also apply; JSON Schema alone cannot express all cross-field constraints.

```json
{
  "$schema": "https://json-schema.org/draft/2020-12/schema",
  "type": "object",
  "properties": {
    "contactId": {
      "type": "string",
      "minLength": 1,
      "maxLength": 300,
      "pattern": "^[A-Za-z0-9_-]+$"
    },
    "tags": {
      "minItems": 1,
      "maxItems": 100,
      "type": "array",
      "items": {
        "type": "string",
        "minLength": 1,
        "maxLength": 100
      }
    },
    "requestId": {
      "description": "Required by the Creators service for mutations: a stable 8–128 character identifier. Reuse on retries; change for a new action.",
      "type": "string",
      "pattern": "^[A-Za-z0-9_.:-]{8,128}$"
    }
  },
  "required": [
    "contactId",
    "tags"
  ],
  "additionalProperties": false
}
```

## Result interpretation

Results use status and message, with operation-specific data and optional link, code, nextAction, and operationId. Data may retain different list/record envelopes. A completed read or accepted send is not proof of delivery/publication. An unknown result must be reconciled. HUMAN_ACTION_REQUIRED returns instructions without performing the action.

## Related guides

- [contacts](https://docs.creator.gg/guides/contacts.md)
- [Recovery](https://docs.creator.gg/guides/recovery.md)