DELETE /external_accounts/{id}

Soft-delete: sets active: false. The underlying account is retained so existing transfers referencing it still resolve. Reverse via POST /external_accounts/{id}/reactivate.

Returns 204 No Content on success.

curl -X DELETE "$BASE_URL/external_accounts/ea_01HZ…" \
  -H "Api-Key: $SEISMIC_ORCHESTRATION_API_KEY"